Academic literature on the topic 'Voltage rectifier circuit'
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Journal articles on the topic "Voltage rectifier circuit"
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Shokrani, Mohammad Reza, Mojtaba Khoddam, Mohd Nizar B. Hamidon, Noor Ain Kamsani, Fakhrul Zaman Rokhani, and Suhaidi Bin Shafie. "An RF Energy Harvester System Using UHF Micropower CMOS Rectifier Based on a Diode Connected CMOS Transistor." Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/963709.
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This paper presents a new type diode connected MOS transistor to improve CMOS conventional rectifier's performance in RF energy harvester systems for wireless sensor networks in which the circuits are designed in 0.18 μm TSMC CMOS technology. The proposed diode connected MOS transistor uses a new bulk connection which leads to reduction in the threshold voltage and leakage current; therefore, it contributes to increment of the rectifier’s output voltage, output current, and efficiency when it is well important in the conventional CMOS rectifiers. The design technique for the rectifiers is explained and a matching network has been proposed to increase the sensitivity of the proposed rectifier. Five-stage rectifier with a matching network is proposed based on the optimization. The simulation results shows 18.2% improvement in the efficiency of the rectifier circuit and increase in sensitivity of RF energy harvester circuit. All circuits are designed in 0.18 μm TSMC CMOS technology.
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Safonov, Valery, and Mikhail Dziuba. "Voltage regulation and phase quantity increase of two high-power 12-phase rectifiers." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 3 (2019): 1454. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1454-1460.
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In this article, we present a new method of simultaneously increasing the phase quantity and regulating the rectified voltage for two 12-phase high-power rectifiers operating at a common load. Self-excited voltage inverters separately form the necessary voltages for voltage regulation and for increasing the phase quantity. The formed voltage is input with the help of a common booster transformer. Separating the inverters functions and using the common booster transformer makes it possible to reduce the installed power of the equipment significantly compared to similar circuits when the regulation range of the rectified voltage is up to 5%. Calculations show that the inverter power for increasing the phase quantity is about 3% of the rectifier power. The circuit was modeled in MatLab/Simulink and the electromagnetic processes in the rectifier were studied. The proposed method makes it possible to reduce the total harmonic distortion of the network current and the pulsation coefficient of the rectified voltage to the values typical for 24-phase rectifiers.
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Valery, Safonov, and Dziuba Mikhail. "Voltage regulation and phase quantity increase of two highpower 12-phase rectifiers." International Journal of Power Electronics and Drive System (IJPEDS) 10, no. 3 (2019): 1454–60. https://doi.org/10.11591/ijpeds.v10.i3.pp1454-1460.
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In this article, we present a new method of simultaneously increasing the phase quantity and regulating the rectified voltage for two 12-phase highpower rectifiers operating at a common load. Self-excited voltage inverters separately form the necessary voltages for voltage regulation and for increasing the phase quantity. The formed voltage is input with the help of a common booster transformer. Separating the inverters functions and using the common booster transformer makes it possible to reduce the installed power of the equipment significantly compared to similar circuits when the regulation range of the rectified voltage is up to 5%. Calculations show that the inverter power for increasing the phase quantity is about 3% of the rectifier power. The circuit was modeled in MatLab/Simulink and the electromagnetic processes in the rectifier were studied. The proposed method makes it possible to reduce the total harmonic distortion of the network current and the pulsation coefficient of the rectified voltage to the values typical for 24-phase rectifiers.
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Doan, Chuc Huu, and Duong Gia Bach. "Investigation of Rectifier Circuit Configurations for Microwave Power Transmission System Operating at S Band." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 5 (2015): 967. http://dx.doi.org/10.11591/ijece.v5i5.pp967-974.
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The purpose of this work is to propose rectifier circuit topologies for microwave power transmission system operating at ISM band. This paper particularly presents in detail the proposed rectifier circuit configurations including series diode half wave rectifier and voltage doubler rectifier. The maximum conversion efficiency of rectifier using series diode half wave rectifier is 40.17 % with 220 W load resistance whereas it is 70.06 % with 330 W load resistance for voltage doubler rectifier. Compared to the series rectifier circuit, it is significant to note that the voltage doubler rectifier circuit has higher efficiency. The circuits presented are tuned for a center frequency of 2.45 GHz. The rectifiers were fabricated using microstrip technology. The design, fabrication and measurement results were obtained using a well-known professional design software for microwave engineering, Advanced Design System 2009 (ADS 2009). All design and measurement results will be reported.
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S. Dhayabarasivam, S., K. Jayanthi, and Gouthame Pragatheeswaran. "Design and Analysis of Modified Diode Rectifier Circuit Suitable for Piezoelectric Energy Harvester for Biomedical Applications." International Journal of Engineering & Technology 7, no. 3.16 (2018): 67. http://dx.doi.org/10.14419/ijet.v7i3.16.16185.
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Nowadays renewable energy sources play a significant role in the energy harvesting. For the past decade various energy harvesting methods have been discussed by researchers for capturing the energy from different sources. From the survey, one of the most prominent methods is the use of piezoelectric transducers for harvesting the energy. It is known that piezoelectric energy harvesting is the easiest method of energy harvesting from the various sources available such as human walking, dancing etc. Therefore this method can be implemented in system for wide variety of applications. The piezoelectric transducer AC output is of very low voltage and power and hence insufficient to drive any electrical application. Most of the small scale electrical application generally runs on the DC voltage, therefore the AC voltage obtained from the piezo transducer vibration is rectified using rectifiers to generate DC voltage. Thus in this paper, a modified rectifier AC/DC converter with the combination of an inductor is placed in the rectifier, which enhances the voltage and power from the rectifier output. In order to enhance the voltage rating, a DC/DC converter has been added at the end of a rectifier circuit. From the simulation results the proposed circuit modified rectifier has improved the output voltage as well as output current by 10.19 volts and 0.1019 amps respectively for input voltage of 5V. When compared with conventional rectifier circuit.
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Edla, Mahesh, Yee Yan Lim, Ricardo Vasquez Padilla, and Mikio Deguchi. "An Improved Rectifier Circuit for Piezoelectric Energy Harvesting from Human Motion." Applied Sciences 11, no. 5 (2021): 2008. http://dx.doi.org/10.3390/app11052008.
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Harvesting energy from human motion for powering small scale electronic devices is attracting research interest in recent years. A piezoelectric device (PD) is capable of harvesting energy from mechanical motions, in the form of alternating current (AC) voltage. The AC voltage generated is of low frequency and is often unstable due to the nature of human motion, which renders it unsuitable for charging storage device. Thus, an electronic circuit such as a full bridge rectifier (FBR) is required for direct current (DC) conversion. However, due to forward voltage loss across the diodes, the rectified voltage and output power are low and unstable. In addition, the suitability of existing rectifier circuits in converting AC voltage generated by PD as a result of low frequency human motion induced non-sinusoidal vibration is unknown. In this paper, an improved H-Bridge rectifier circuit is proposed to increase and to stabilise the output voltage. To study the effectiveness of the proposed circuit for human motion application, a series of experimental tests were conducted. Firstly, the performance of the H-Bridge rectifier circuit was studied using a PD attached to a cantilever beam subject to low frequency excitations using a mechanical shaker. Real-life testing was then conducted with the source of excitation changed to a human performing continuous cycling and walking motions at a different speed. Results show that the H-Bridge circuit prominently increases the rectified voltage and output power, while stabilises the voltage when compared to the conventional FBR circuit. This study shows that the proposed circuit is potentially suitable for PEH from human motion.
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Petrović, Predrag, and Mihajlo Tatović. "New full-wave/half-wave rectifier with electronic control." Journal of Electrical Engineering 76, no. 2 (2025): 147–58. https://doi.org/10.2478/jee-2025-0015.
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Abstract This research article introduces an innovative full-wave rectifier design centered around the Voltage Differencing Trans-conductance Amplifier (VDTA) as its foundational core, thereby eradicating the necessity for passive components. The proposed circuit demonstrates high linearity and good zero-crossing performances. The rectified output signal can be adjusted by controlling the bias currents. Its simple and compact design makes it well-suited for integration into IC circuits, especially for low-voltage, high-frequency applications. A detailed analysis of the proposed rectifier includes evaluating non-ideal effects and parasitic influences. By eliminating passive components, the circuit minimizes parasitic effects. Its robustness is evaluated through detailed simulations using 0.18 μm CMOS technology and a ±0.8 V power supply, showing strong agreement with theoretical predictions. Additional reliability insights are obtained via Monte Carlo simulations and corner analysis. To verify the rectifier’s feasibility, practical experiments with off-the-shelf components confirm its functionality and efficiency. The circuit layout is implemented in Cadence Virtuoso, occupying a chip area of 2726 μm2.
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Sadek, Dalia H., Heba A. Shawkey, and Abdelhalim A. Zekry. "Compact and High-Efficiency Rectenna for Wireless Power-Harvesting Applications." International Journal of Antennas and Propagation 2021 (December 15, 2021): 1–8. http://dx.doi.org/10.1155/2021/1109850.
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A compact, single-layer microstrip rectenna for dedicated far-field RF wireless power-harvesting applications is presented. The proposed rectenna circuit configurations including multiband triple L-Arms patch antenna with diamond slot ground are designed to resonate at 10, 13, 17, and 26 GHz with 10 dB impedance bandwidths of 0.67, 0.8, 2.45, and 4.3 GHz, respectively. Two rectifier designs have been fabricated and compared, a half wave rectifier with a shunted Schottky diode and a voltage doubler rectifier. The measured and simulated maximum conversion efficiencies of the rectifier using the shunted diode half-wave rectifier are 41%, and 34%, respectively, for 300 Ω load resistance, whereas they amount to 50% and 43%, respectively, for voltage doubler rectifier with 650 Ω load resistance. Compared to the shunted rectifier circuit, it is significant to note that the voltage doubler rectifier circuit has higher efficiency. Both rectifier’s circuits presented are tuned for a center frequency of 10 GHz and implemented using 0.81 mm thick Rogers (RO4003c) substrate. The overall size of the antenna is 16.5 × 16.5 mm2, and the shunted rectifier is only 13.3 × 8.2 mm2 and 19.7 × 7.4 mm2 for the voltage doubler rectifier. The antenna is designed and simulated using the CST Microwave Studio Suite (Computer Simulation Technology), while the complete rectenna is simulated using Agilent’s ADS tool with good agreement for both simulation and measurements.
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Xu, Shaobo. "Comprehensive Analysis of Vienna Rectifiers for Renewable Resources." Highlights in Science, Engineering and Technology 81 (January 26, 2024): 38–48. http://dx.doi.org/10.54097/k8q5mh81.
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The issue of energy has emerged as a significant subject of concern in contemporary discourse. The significance of the advancement of novel energy sources is progressively growing. Relevant strategies should aid in the advancement of power electronics. The rectifier is a commonly used electronic component that finds application in many circuits involving electronic equipment. Its primary function is to convert alternating current into direct current, which is then supplied to the load. The Vienna rectifier is a widely used rectifier that has garnered significant attention and scrutiny from professionals in the field of power electronics on a global scale. This article begins by illustrating the use of power electronics technology, specifically focusing on the charging pile circuit. It proceeds to discuss the classification and current research status of rectifiers. Subsequently, the article provides an overview of the circuit layout and operational principles of the Vienna rectifier circuit. This section provides an overview of the approaches and features used to optimize the operating performance of Vienna rectifiers in four key areas: current control, voltage control, neutral point voltage balance management, and harmonic stability control. This research will ultimately provide a forecast about the future development trend of Vienna rectifiers, together with a comprehensive overview of all improvement attempts.
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Puspasari, Fitri, Sismanto Sismanto, and Ahmad Ashari. "Fabrication and experimental study of transformer 400 V with a simple rectifier circuit design." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 2 (2023): 1320. http://dx.doi.org/10.11591/ijece.v13i2.pp1320-1328.
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The demand for increased voltage in renewable energy sources is relatively high. This study examines the rapid development of technology considering the use of voltage-increasing transformers. Voltage regulator circuits are generally used to stabilize the output voltage of the rectifier according to the amount of input from the transformer. However, components for high-voltage stabilizer circuits are rare, which becomes an obstacle to the stabilization of the rectifier output. This study aimed to determine the performance of the designed rectifier circuit against a non-center tap step-up direct current (DC) 400 V transformer and compare the measurement results to manual calculations. The research method is a direct comparison between the input and output voltage values of the transformer after going through a rectifier circuit. This experiment was conducted using the repeatability method three to five times for each voltage variation on the transformer. The voltage variations successfully created are 0 to 50, 0 to 100, 0 to 200, and 0 to 400 V. The output test results from the DC transformer and rectifier circuit show linear results and an increase in peak-to-peak voltage data between the transformer and rectifier outputs by 3.8%.
Dissertations / Theses on the topic "Voltage rectifier circuit"
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Eleyele, Abidemi Oluremilekun. "Isolated Single-Stage Interleave Resonant PFC Rectifier with Active and Novel Passive Output Ripple Cancellation Circuit." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-423117.
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With the increasing demand for fast, cheaper, and efficient power converters come the need for a single-stage power factor correction (PFC) converter. Various single-stage PFC converter proposed in the literature has the drawback of high DC bus voltage at the input side and together with the shift to wide bandgap switches like GaN drives the converter cost higher. However, an interleaved topology with high-frequency isolation was proposed in this research work due to the drastic reduction in the DC bus voltage and extremely low input current ripple thereby making the need for an EMI filter circuit optional. Meanwhile, this research work focuses on adapting the proposed topology for a high voltage low current application (EV charger - 400V, 7KW) and low voltage high current application (telecom power supply - 58V, 58A) owing to cost benefits. However, all single-stage PFC are faced with the drawback of second-order (100Hz) output harmonic ripple. Therefore, the design and simulation presented a huge peak to peak ripple of about 50V/3A and 26V/26A for the EV charger and telecom power supply case, respectively. This created the need for the design of a ripple cancellation circuit as the research required a peak to peak ripple of 8V and 200mV for the EV - charger and telecom power supply, respectively. A novel output passive ripple cancellation technique was developed for the EV charger case due to the ease it offers in terms of control, circuit complexity and extremely low THDi when compared with the active cancellation approach. The ripple circuit reduced the 50V ripple to 431mV with the use of a total of 2.2mF capacitance at the output stage. Despite designing the passive technique, an active ripple cancellation circuit was designed using a buck converter circuit for the telecom power supply. The active approach was chosen because the passive has a slow response and incurs more loss at a high current level. Adding the active ripple cancellation circuit led to a quasi-single stage LLC PFC converter topology. A novel duty-ratio feedforward control was added to synchronize the PFC control of the input side with the buck topology ripple cancellation circuit. The addition of the ripple circuit with the feedforward control offered a peak to peak ripple of 6.7mV and a reduced resonant inductor current by half. After analysis, an extremely low THDi of 0.47%, PF of 99.99% and a peak efficiency of 97.1% was obtained for the EV charger case. The telecom power supply offered a THDi of 2.3%, PF of 99.96% with a peak efficiency of 95%.
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Chaour, Issam, Ahmed Fakhfakh, and Olfa Kanoun. "Enhanced Passive RF-DC Converter Circuit Efficiency for Low RF Energy Harvesting." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-224264.
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For radio frequency energy transmission, the conversion efficiency of the receiver is decisive not only for reducing sending power, but also for enabling energy transmission over long and variable distances. In this contribution, we present a passive RF-DC converter for energy harvesting at ultra-low input power at 868 MHz. The novel converter consists of a reactive matching circuit and a combined voltage multiplier and rectifier. The stored energy in the input inductor and capacitance, during the negative wave, is conveyed to the output capacitance during the positive one. Although Dickson and Villard topologies have principally comparable efficiency for multi-stage voltage multipliers, the Dickson topology reaches a better efficiency within the novel ultra-low input power converter concept. At the output stage, a low-pass filter is introduced to reduce ripple at high frequencies in order to realize a stable DC signal. The proposed rectifier enables harvesting energy at even a low input power from −40 dBm for a resistive load of 50 kΩ. It realizes a significant improvement in comparison with state of the art solutions
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Zabihi, Sasan. "Flexible high voltage pulsed power supply for plasma applications." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48137/1/Sasan_Zabihi_Sheykhrajeh_Thesis.pdf.
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Demands for delivering high instantaneous power in a compressed form (pulse shape) have widely increased during recent decades. The flexible shapes with variable pulse specifications offered by pulsed power have made it a practical and effective supply method for an extensive range of applications. In particular, the release of basic subatomic particles (i.e. electron, proton and neutron) in an atom (ionization process) and the synthesizing of molecules to form ions or other molecules are among those reactions that necessitate large amount of instantaneous power. In addition to the decomposition process, there have recently been requests for pulsed power in other areas such as in the combination of molecules (i.e. fusion, material joining), gessoes radiations (i.e. electron beams, laser, and radar), explosions (i.e. concrete recycling), wastewater, exhausted gas, and material surface treatments. These pulses are widely employed in the silent discharge process in all types of materials (including gas, fluid and solid); in some cases, to form the plasma and consequently accelerate the associated process.
Due to this fast growing demand for pulsed power in industrial and environmental applications, the exigency of having more efficient and flexible pulse modulators is now receiving greater consideration. Sensitive applications, such as plasma fusion and laser guns also require more precisely produced repetitive pulses with a higher quality. Many research studies are being conducted in different areas that need a flexible pulse modulator to vary pulse features to investigate the influence of these variations on the application. In addition, there is the need to prevent the waste of a considerable amount of energy caused by the arc phenomena that frequently occur after the plasma process. The control over power flow during the supply process is a critical skill that enables the pulse supply to halt the supply process at any stage.
Different pulse modulators which utilise different accumulation techniques including Marx Generators (MG), Magnetic Pulse Compressors (MPC), Pulse Forming Networks (PFN) and Multistage Blumlein Lines (MBL) are currently employed to supply a wide range of applications. Gas/Magnetic switching technologies (such as spark gap and hydrogen thyratron) have conventionally been used as switching devices in pulse modulator structures because of their high voltage ratings and considerably low rising times. However, they also suffer from serious drawbacks such as, their low efficiency, reliability and repetition rate, and also their short life span. Being bulky, heavy and expensive are the other disadvantages associated with these devices. Recently developed solid-state switching technology is an appropriate substitution for these switching devices due to the benefits they bring to the pulse supplies. Besides being compact, efficient, reasonable and reliable, and having a long life span, their high frequency switching skill allows repetitive operation of pulsed power supply. The main concerns in using solid-state transistors are the voltage rating and the rising time of available switches that, in some cases, cannot satisfy the application’s requirements. However, there are several power electronics configurations and techniques that make solid-state utilisation feasible for high voltage pulse generation. Therefore, the design and development of novel methods and topologies with higher efficiency and flexibility for pulsed power generators have been considered as the main scope of this research work. This aim is pursued through several innovative proposals that can be classified under the following two principal objectives.
• To innovate and develop novel solid-state based topologies for pulsed power generation
• To improve available technologies that have the potential to accommodate solid-state technology by revising, reconfiguring and adjusting their structure and control algorithms.
The quest to distinguish novel topologies for a proper pulsed power production was begun with a deep and through review of conventional pulse generators and useful power electronics topologies. As a result of this study, it appears that efficiency and flexibility are the most significant demands of plasma applications that have not been met by state-of-the-art methods. Many solid-state based configurations were considered and simulated in order to evaluate their potential to be utilised in the pulsed power area. Parts of this literature review are documented in Chapter 1 of this thesis.
Current source topologies demonstrate valuable advantages in supplying the loads with capacitive characteristics such as plasma applications. To investigate the influence of switching transients associated with solid-state devices on rise time of pulses, simulation based studies have been undertaken. A variable current source is considered to pump different current levels to a capacitive load, and it was evident that dissimilar dv/dts are produced at the output. Thereby, transient effects on pulse rising time are denied regarding the evidence acquired from this examination. A detailed report of this study is given in Chapter 6 of this thesis.
This study inspired the design of a solid-state based topology that take advantage of both current and voltage sources. A series of switch-resistor-capacitor units at the output splits the produced voltage to lower levels, so it can be shared by the switches. A smart but complicated switching strategy is also designed to discharge the residual energy after each supply cycle. To prevent reverse power flow and to reduce the complexity of the control algorithm in this system, the resistors in common paths of units are substituted with diode rectifiers (switch-diode-capacitor). This modification not only gives the feasibility of stopping the load supply process to the supplier at any stage (and consequently saving energy), but also enables the converter to operate in a two-stroke mode with asymmetrical capacitors. The components’ determination and exchanging energy calculations are accomplished with respect to application specifications and demands. Both topologies were simply modelled and simulation studies have been carried out with the simplified models. Experimental assessments were also executed on implemented hardware and the approaches verified the initial analysis. Reports on details of both converters are thoroughly discussed in Chapters 2 and 3 of the thesis.
Conventional MGs have been recently modified to use solid-state transistors (i.e. Insulated gate bipolar transistors) instead of magnetic/gas switching devices. Resistive insulators previously used in their structures are substituted by diode rectifiers to adjust MGs for a proper voltage sharing. However, despite utilizing solid-state technology in MGs configurations, further design and control amendments can still be made to achieve an improved performance with fewer components. Considering a number of charging techniques, resonant phenomenon is adopted in a proposal to charge the capacitors. In addition to charging the capacitors at twice the input voltage, triggering switches at the moment at which the conducted current through switches is zero significantly reduces the switching losses. Another configuration is also introduced in this research for Marx topology based on commutation circuits that use a current source to charge the capacitors. According to this design, diode-capacitor units, each including two Marx stages, are connected in cascade through solid-state devices and aggregate the voltages across the capacitors to produce a high voltage pulse. The polarity of voltage across one capacitor in each unit is reversed in an intermediate mode by connecting the commutation circuit to the capacitor. The insulation of input side from load side is provided in this topology by disconnecting the load from the current source during the supply process. Furthermore, the number of required fast switching devices in both designs is reduced to half of the number used in a conventional MG; they are replaced with slower switches (such as Thyristors) that need simpler driving modules. In addition, the contributing switches in discharging paths are decreased to half; this decrease leads to a reduction in conduction losses. Associated models are simulated, and hardware tests are performed to verify the validity of proposed topologies. Chapters 4, 5 and 7 of the thesis present all relevant analysis and approaches according to these topologies.
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Najafi, Syed Ahmed Ali. "Energy Harvesting From Overhead Transmission Line Magnetic Fields." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1548448189459464.
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Kaya, Ibrahim. "A Switch Mode Power Supply For Producing Half Wave Sine Output." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609781/index.pdf.
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In this thesis<br>analysis, design and implementation of a DC-DC converter with active clamp forward topology is presented. The main objective of this thesis is generating a rectified sinusoidal voltage at the output of the converter. This is accomplished by changing the reference signal of the converter. The converter output is applied to an inverter circuit in order to obtain sinusoidal waveform. The zero crossing points of the converter is detected and the inverter drive signals are generated in order to obtain sinusoidal waveform from the output of the converter. Next, the operation of the DC-DC converter and sinusoidal output inverter coupled performance is investigated with resistive and inductive loads to find out how the proposed topology performs. The design is implemented with an experimental set-up and steady state and dynamic performance of the designed power supply is tested. Finally an evaluation of how better performance can be obtained from this kind of arrangement to obtain a sinusoidal output inverted is thoroughly discussed
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Гаврилюк, Ігор Миколайович, та Havryliuk Ihor. "Розробка проекту лінії електропередачі з вставкою постій¬ного струму". Master's thesis, ТНТУ імені Івана Пулюя, 2019. http://elartu.tntu.edu.ua/handle/lib/29562.
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В дипломній роботі виконано дослідження можливих варіантів об’єднання несинхронних електроенергетичних систем та систем з різними стандартами регулювання частоти.
Метою роботи є розробка лінії електропередачі «Ковель – Хелм» з вставкою постійного струму для продажу електроенергії з України у Польщу.
Об’єкти, аналогічні спроектованому у даному проекті, можна впровад¬жувати і в інших елек-тричних мережах, що дозволить значно зменшити розміри синхронних мереж змінного струму, запобігти або обмежити каскадні відключення, підвищити коефіцієнт корисної дії електромереж і надійність електроенергетичних систем.<br>In the diploma paper deals with the possibility of combining non-synchronous power systems and systems with different frequency control standards.
The purpose of the work is to develop a Kovel-Helm transmission line with a DC insert for the sale of electricity from Ukraine to Poland.
Objects similar to those projected in this project can be implemented in other power grids, which will significantly reduce the size of AC synchronous networks, prevent or limit cascade outages, increase the efficiency of grids and the reliability of power systems.<br>ПЕРЕЛІК УМОВНИХ СКОРОЧЕНЬ.................................................................... 7
ВСТУП .................................................................................................................…8
1 АНАЛІТИЧНА ЧАСТИНА ...............................................................................13
1.1 Призначення вставок постійного струму......................................................13
1.2 ВВППС – основні характеристики системи .................................................15
1.3 Варіанти застосування ВВППС .....................................................................16
1.4 Керування потужністю ...................................................................................17
1.5 Поведінка ВВППС в умовах виходу з ладу системи змінного струму......18
1.6 Вплив підключеної мережі змінного струму на ВПС .................................19
1.7 Споживання реактивної потужності .............................................................21
1.8 Висновки до розділу .......................................................................................23
2 НАУКОВО-ДОСЛІДНА ЧАСТИНА................................................................24
2.1 Пріоритетні напрями діяльності магістрального електромережевого
комплексу.........................................................................................................24
2.2 Заходи шодо зниження комерційних втрат електроенергії ........................28
2.3 Перспективи передачі електроенергії за допомогою постійного струму .30
2.4 Основні причини використання ППС в ОЕС України ................................32
2.5 Висновки до розділу .......................................................................................35
3 ТЕХНОЛОГІЧНА ЧАСТИНА ..........................................................................36
3.1 Вибір напруги ліній електропередач постійного струму............................36
3.2 Вибір схеми вставки постійного струму.......................................................40
3.3 Перетворення й регулювання струму конверторами ..................................41
3.4 Вибір тиристорів .............................................................................................44
3.5 Система захисту тиристорів від перенапруг та перевантажень .................48
3.6 Система охолодження тиристорних модулів ...............................................50
3.7 Визначення кількості тиристорів у вентильних групах перетворювача ...52
3.8 Висновки до розділу .......................................................................................54
4 ПРОЕКТНО-КОНСТРУКТОРСЬКА ЧАСТИНА ...........................................55
4.1 Вибір раціонального січення проводів .........................................................55
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4.2 Розрахунок споживання реактивної енергії перетворювачами..................56
4.3 Усунення впливу вищих гармонік напруги й струму у схемі ВПС...........60
4.4 Розрахунок фільтрокомпенсуючого пристрою............................................65
4.5 Активні фільтри...............................................................................................71
4.6 Висновки до розділу .......................................................................................74
5 СПЕЦІАЛЬНА ЧАСТИНА................................................................................75
5.1 Вибір трансформатора ....................................................................................75
5.2 Компенсація реактивної потужності.............................................................78
5.3 Вибір місця під’єднання компенсаційних пристроїв ..................................81
5.4 Розрахунок потужності компенсаційних пристроїв ....................................81
5.5 Зменшення струму несиметрії у вставках постійного струму ...................84
5.6 Струм к.з. на шинах високої напруги трансформаторів .............................86
5.7 Вибір обладнання ............................................................................................87
5.8 Висновки до розділу .......................................................................................92
6 ОБГРУНТУВАННЯ ЕКОНОМІЧНОЇ ЕФЕКТИВНОСТІ..............................93
6.1 Критерії економічної ефективності енергетичного виробництва..............93
6.2 Визначення капітальних затрат .....................................................................94
6.3 Вартість електроенергії ..................................................................................95
6.4 Розрахунок економічної ефективності..........................................................98
7 ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ ...100
7.1 Заходи безпеки при обслуговуванні електроустановок ............................100
7.2 Захист персоналу від впливу електричних і електромагнітних полів .....103
7.3 Захист персоналу підстанції від наведених напруг ...................................106
8 ЕКОЛОГІЯ........................................................................................................108
8.1 Актуальність охорони навколишнього середовища..................................108
8.2 Вплив на людину електромагнітного забруднення довкілля ...................108
8.3 Вплив магнітного поля повітряних ліній постійного струму високої і
надвисокої напруги на навколишнє середовище.......................................110
ЗАГАЛЬНІ ВИСНОВКИ ДО ДИПЛОМНОЇ РОБОТИ ...................................112
ПЕРЕЛІК ПОСИЛАНЬ .......................................................................................113
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Huang, Chin-Hsiung, and 黃金雄. "A Zero-Voltage-Transition Bridgeless Power Factor Correction Rectifier with Soft-Switched Auxiliary Circuit." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/29620826958489897825.
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碩士<br>國立雲林科技大學<br>電機工程系<br>103<br>This thesis presents a zero-voltage-transition (ZVT) bridgeless power factor correction (PFC) rectifier. The proposed rectifier consists of a traditional rectifier diode bridge and a dc/dc power factor correction circuit, and the rectifier uses an auxiliary circuit to achieve soft-switching. The auxiliary circuit can provide zero-voltage turn-on for the main switch without any additional voltage or current stresses. The auxiliary switch turns off with zero-current switching (ZCS). The switching loss of each power switch and electromagnetic interference are reduced. Therefore, the proposed circuit can improve the overall rectifier efficiency. The proposed ZVT bridgeless PFC rectifier has merits of high power factor, high efficiency and wide-range input voltage. The system uses the one-cycle control IC to avoid the difficult of input voltage feedback for the bridgeless circuit, which reduces the size and the cost of the bridgeless PFC circuit. Therefore, the power density of the circuit is increased. Finally, a 700W prototype has been implemented to verify the proposed theory and scheme.
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Ferreira, Ana Cláudia Rodrigues. "Rectification, amplification and switching capabilities for energy harvesting systems: power management circuit for piezoelectric energy harvester." Master's thesis, 2020. http://hdl.handle.net/1822/70173.
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Dissertação de mestrado em Biomedical Engineering<br>A new energy mechanism needs to be addressed to overcome the battery dependency, and consequently extend
Wireless Sensor Nodes (WSN) lifetime effectively. Energy Harvesting is a promising technology that can fulfill
that premise. This work consists of the realization of circuit components employable in a management system for
a piezoelectric-based energy harvester, with low power consumption and high efficiency. The implementation of
energy harvesting systems is necessary to power-up front-end applications without any battery. The input power
and voltage levels generated by the piezoelectric transducer are relatively low, especially in small-scale systems,
as such extra care has to be taken in power consumption and efficiency of the circuits.
The main contribution of this work is a system capable of amplifying, rectifying and switching the unstable
signal from an energy harvester source. The circuit components are designed based on 0.13 𝜇𝑚 Complementary
Metal-Oxide-Semiconductor (CMOS) technology.
An analog switch, capable of driving the harvesting circuit at a frequency between 1 𝐻𝑧 and 1 𝑀𝐻𝑧, with
proper temperature behaviour, is designed and verified. An OFF resistance of 520.6 𝑀Ω and isolation of
−111.24 𝑑𝐵, grant excellent isolation to the circuit.
The designed voltage amplifier is capable of amplifying a minor signal with a gain of 42.56 𝑑𝐵, while requiring
low power consumption. The output signal is satisfactorily amplified with a reduced offset voltage of 8 𝜇𝑉.
A new architecture of a two-stage active rectifier is proposed. The power conversion efficiency is 40.4%, with
a voltage efficiency of up to 90%. Low power consumption of 17.7 𝜇𝑊 is achieved by the rectifier, with the
embedded comparator consuming 113.9 𝑛𝑊.
The outcomes validate the circuit’s power demands, which can be used for other similar applications in biomedical,
industrial, and commercial fields.<br>Para combater a dependência dos dispositivos eletrónicos relativamente ás baterias é necessário um novo sistema
energético, que permita prolongar o tempo de vida útil dos mesmos. Energy Harvesting é uma tecnologia
promissora utilizada para alimentar dispositivos sem bateria. Este trabalho consiste na realização de componentes
empregáveis num circuito global para extrair energia a partir ds vibrações de um piezoelétricos com baixo
consumo de energia e alta eficiência. Os níveis de potência e voltagem gerados pelo transdutor piezoelétrico são
relativamente baixos, especialmente em sistemas de pequena escala, por isso requerem cuidado extra relativamente
ao consumo de energia e eficiência dos circuitos.
A principal contribuição deste trabalho é um sistema apropriado para amplificar, retificar e alternar o sinal
instável proveniente de uma fonte de energy harvesting. Os componentes do sistema são implementados com
base na tecnologia CMOS com 0.13 𝜇𝑚.
Um interruptor analógico capaz de modelar a frequência do sinal entre 1 𝐻𝑧 e 1 𝑀𝐻𝑧 e estável perante
variações de temperatura, é implementado. O circuito tem um excelente isolamento de −111.24 𝑑𝐵, devido a
uma resistência OFF de 520.6 𝑀Ω.
O amplificador implementado é apto a amplificar um pequeno sinal com um ganho de 42.56 𝑑𝐵 e baixo
consumo. O sinal de saída é satisfatoriamente amplificado com uma voltagem de offset de 8 𝜇𝑉.
Um retificador ativo de dois estágios com uma nova arquitetura é proposto. A eficiência de conversão de
energia atinge os 40.4%, com uma eficiência de voltagem até 90%. O retificador consome pouca energia, apenas
17.7 𝜇𝑊, incorporando um comparador de 113.9 𝑛𝑊.
Os resultados validam as exigências energéticas do circuito, que pode ser usado para outras aplicações similares
no campo biomédico, industrial e comercial.
Book chapters on the topic "Voltage rectifier circuit"
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Pang, Yuncong, Yuanpeng Guan, and Yiting Xiao. "Research on Active RCD Voltage Equalizing Circuit of High Voltage Uncontrolled Rectifier Valve Series Diodes." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0408-2_86.
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Gong, Congguo, Rixin Wang, Shengmin Pan, et al. "Simulation and Performance Analysis of Output Voltage Characteristics of Sixfold Rectifier Circuit." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-8820-0_47.
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Zhao, Feng, and Bingjiao Wu. "Thyristor Ports Voltage in Double Anti-Star-Controlled Rectifier Circuit with Balancing Reactor." In Electrical, Information Engineering and Mechatronics 2011. Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2467-2_184.
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Rajawat, Asmita, Karush Suri, and Mohit Mohta. "Design of an Efficient Rectifier Circuit Based on Karthaus-Fischer Voltage Multiplier for Energy Harvesting." In Advances in Intelligent Systems and Computing. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-5903-2_96.
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Pederson, Donald O., and Kartikeya Mayaram. "Rectifiers, Regulators and Voltage References." In Analog Integrated Circuits for Communication. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-2128-7_15.
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Radin, Rafael Luciano, Marcio Bender Machado, Mohamad Sawan, Carlos Galup-Montoro, and Marcio Cherem Schneider. "Rectifier Analysis for Ultra-Low-Voltage Operation." In Analog Circuits and Signal Processing. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04492-2_3.
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Zhang, Haokun, Daotong Li, and Zhihui Wang. "Compact High-Efficiency Broadband Microwave Rectifier for Free-Space RF Energy Harvesting." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220267.
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This paper presents a compact high-efficiency broadband microwave rectifier for free-space Radio Frequency (RF) energy harvesting. Lumped-element components and voltage-doubling circuits are used to improve output efficiency and power, widen frequency bandwidth, and reduce circuit size. The theoretical model and numerical model of the rectifier circuit are established, and the mechanism of the microwave voltage-doubling rectifier is revealed by using Advanced Design System (ADS) EM simulator. The simulated results exhibit that the rectification efficiency is larger than 60% with the highest efficiency of 84% under the input power of 16 dBm–30 dBm and the frequency of 600 MHz–1600 MHz. Moreover, the overall size is 4 cm × 2 cm, smaller than some recently published literatures, proving the circuit structure’s superiority. On this basis, for the lower operating frequency band, the circuit structure is further simplified without reducing bandwidth and efficiency by reducing the number of circuit components, and the overall size is only 2 cm × 2 cm. For validation, two broadband rectifiers fabricated by utilizing FR4 dielectric substrate and Printed Circuit Board (PCB) technology, are implemented and tested using Vector Signal Generator (VSG), DC resistance, and multimeter. The measure results are in good agreement with simulation ones within the measuring range of the equipment.
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Zhou, Geng, Haitao Cui, Yuhua Ma, Yiming Luo, Cuixia Wang, and Bin Lian. "Design and Simulation of a Flyback Switching Power Supply." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220064.
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This paper describes the design of an IC+MOS switching power supply, including EMI filter circuit, rectifier filter circuit, self-excited power supply circuit, switching converter, output filter circuit and control circuit, and the parameters and design process involved in each part of the circuit are analyzed. The rationality of the design is verified by simulation and circuit construction, and the stable output of voltage is realized, the core components are domestic components.
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Taybi, Abdellah, Abdelali Tajmouati, Jamal Zbitou, and Mohamed Latrach. "Study and Design of New Rectenna Structures for Wireless Power Transmission Applications." In Advances in Computer and Electrical Engineering. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0117-7.ch004.
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This chapter presents many research works that have been carried out to deal with the problem of power supply to remote sensors. A 2.45 GHz voltage multiplier rectifier was validated to deliver 18V of output voltage with a conversion efficiency of 69%. Another rectenna was fabricated at 5.8 GHz of the Industrial Scientific Medical band and reach a measured voltage of 7.4V at 18 dBm. The third structure is about a series rectifier working at 2.45 GHz associated with a microstrip low pass filter which produces a supplying voltage of 11.23V. Added to the aforementioned results, the objective in this work is to design, optimize and realize two structures: A dual band patch antenna working at 2.45 GHz and 5.8 GHz, and a compact rectifier circuit at 2.45 GHz for the power supply of low-consumption devices. This rectifier has been designed using Advanced Design System. The bridge topology was employed on an FR4 substrate. A good matching input impedance was observed and high conversion efficiency was obtained. Simulation results have been validated through realization and measurements.
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Huang Mengtao and Zhao Jiamei. "Research on Constant Power Charging and Discharging of Battery Based on LCL Filter." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2017. https://doi.org/10.3233/978-1-61499-785-6-193.
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In allusion to the application of LCL filter in three-phase voltage rectifier circuit, this paper will apply LCL filter to battery energy storage system, compared with traditional single LC filter, we can use smaller inductance value to achieve better filtering effect, eliminating the problems caused by conventional filters, such as large volume, high cost, poor dynamic response of system. According to the requirements of the design of the whole system, by analyzing the circuit principle and control strategy of the system, using the three-phase voltage type PWM rectifier (VSR) and bidirectional DC/DC converter, through a simple design method of the parameters of the LCL filter, ultimately, the correctness of the theoretical analysis is verified by simulation and experiment and realize the constant power charging and discharging of the battery.
Conference papers on the topic "Voltage rectifier circuit"
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Ding, Hongbo, Jared Pannell, Casey Sprayberry, Yuxi Duan, and Dirk L. van Oostendorp. "Circuit Resistance of an Impressed Current Cathodic Protection System for the External Surface of the Bottom Plate of above Ground Storage Tank Using Grid Anodes." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14261.
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Abstract The grid anode system based on mixed metal oxide (MMO) wire anodes and titanium wire conductors is widely used for impressed current cathodic protection (ICCP) on the steel bottom plates of the aboveground storage tanks. In the past decades, numerous grid anode systems have been installed and commissioned and therefore there exists a large database regarding the operating conditions of the grid anode system, such as the output of voltage and current. On the other hand, it is well-known that rectifier output voltage and current is related by the equation: E=I×R+Ebwhere: E = output voltage (in volts)I = output current (in Amperes)R = circuit resistance (in Ohms)Eb = instantaneous open-circuit opposing voltage between an anode and cathode of an operating cathodic protection system (in volts, commonly called ‘back emf’). Hence, the circuit resistance of various grid anode system can be back-calculated using existing data. A systematic analysis of the database has enabled us to create a more realistic approach in determining the circuit resistance and the current demand. The new approach can be used for sizing the rectifiers and optimizing the grid system. The results obtained from this analysis are expected to be applicable to other ICCP system for protecting the external surface of tank bottom plates using local anodes.
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Snider, D. E., and S. X. James. "Real-Time Cathodic Protection Analysis." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90413.
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Abstract In general, buried metallic structures are protected from corrosion by either a full wave rectified power line voltage or a galvanic system. In both cases, real-time voltage measurements will benefit corrosion analysis and structure maintenance. Where power line voltages are used for protection, structure-to-electrolyte interfacial voltages fluctuate with the time varying applied waveforms. The amount of fluctuation is a function of the entire driven network. The network consists of electronic and electronic electrochemical equivalent components. Instrumentation required to measure these real time voltages in the field must remove extraneous voltages not related to the intended applied protection voltage. Once extraneous voltages are removed from the composite waveform, anodic excursions can be measured and corrective action taken. Fluctuations of the polarization potentials can be explained by an equivalent circuit of the entire network. Polarization average and peak values are windowed, i.e., too high a polarization causes coating loss and/or metal embrittlement and too low a value allows excessive corrosion. Filtered real time peak-to-peak measurements will indicate the quality of the protective coating on the structure. Also, this measurement allows detection and tracking of leakage currents between impressed and galvanic systems.
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Черемухин, Дмитрий Андреевич. "EXPERIMENTAL CHECK OF OPERATION OF A SINGLE-PHASE TWO-SEMI-PERIOD RECTIFIER." In Сборник избранных статей по материалам научных конференций ГНИИ “Нацразвитие” (Санкт-Петербург, Апрель 2020). Crossref, 2020. http://dx.doi.org/10.37539/apr290.2020.14.63.006.
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В данной статье будут проанализированы процессы в однофазной мостовой выпрямительной цепи с активной нагрузкой; определено среднее значение выпрямленного напряжения (тока) в цепи. Также будет рассчитана частота пульсации выпрямленного напряжения, коэффициент пульсации. Электрическая схема выпрямителя будет смоделирована в программном комплексе Multisim, который позволяет производить необходимые измерения. This article will analyze processes in a single-phase bridge rectifier circuit with an active load; the average value of the rectified voltage (current) in the circuit is determined. It will also determine the frequency of the ripple of the rectified voltage, the ripple coefficient. The electric circuit of the rectifier will be modeled in the Multisim software package, which allows monitoring the necessary measurements.
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Wu, Wei, Andy G. Lozowski, and Fengxia Wang. "Improved Rectifier Circuit With Backward Diodes for Low Power Source Harvesting." In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6018.
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Most energy harvesting circuits use a Schottky diode rectifier as the first stage in the power conversion system. Schottky diodes are chosen for their low forward-voltage drop which can be as low as 0.15V. Further improvements toward enabling lower voltage sources may be accomplished by using active rectifiers with MOSFET transistors. However such circuits still require an initial start-up phase in which the source voltage needs to exceed the Schottky barrier voltage. As an alternative we propose using backward diodes to build a rectifier with much smaller barrier voltage compared to the Schottky solution. In the past, backward diodes were used in low-voltage diode detectors and are essentially a variation of tunnel diodes. This paper provides both simulation results and an experimental comparative study of the performance of Schottky and backward diodes. The relationship between optimal load, frequency and internal impedance of the voltage source will be discussed as well.
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Gelman, Vitaly. "Thyristor Controlled Rectifier Testing Using Scaling Theory." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6133.
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Thyristor Controlled Rectifiers offer numerous advantages for the traction applications: capital cost savings, increased system throughput, reduced maintenance and additional energy and cost savings for reversible controlled rectifiers. Yet the controlled rectifier usage has been limited, partially because of testing difficulties. The multi-megawatt power level makes testing at the test laboratory at full power impractical. Further exasperating the issue is a presence of control systems that can’t be tested completely while running with a shorted output. The paper proposes a way out of this conundrum through the testing at reduced voltage and current (scaling). The scaling allows reducing power requirements 50 to 400 times, making it practical to test both regulating system and power circuit performance with simulated train load current. The scaled voltage/current test verifies a dynamic response under realistic train behavior, voltage regulation curve, AC and DC harmonics. The paper proposes the scaling tests to verify both forward and reverse operation of controlled rectifier.
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Corbishley, Phil, and Esther Rodriguez-Villegas. "A Low Power Low Voltage Rectifier Circuit." In 2006 49th IEEE International Midwest Symposium on Circuits and Systems. IEEE, 2006. http://dx.doi.org/10.1109/mwscas.2006.381779.
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Lall, Pradeep, Md Golam Sarwar, Ved Soni, and Scott Miller. "Repairability of SMDs on 3D Printed Circuitry for Sustainable Electronics Utilizing Direct Write Technique." In ASME 2023 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/ipack2023-112061.
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Abstract Sustainable conductive ink for 3D-printed flexible electronics is needed to enable lower-impact waste print processes. The ability to undertake reparability is an additional method to achieve sustainable products through the extension of electronic components’ lifespan and reduced e-waste. However, repairability studies are scarce for sustainable, flexible electronics in the literature. This study assessed the repairability potential of Surface Mount Devices (SMD) on 3D-printed full wave rectifier circuits for sustainable flexible electronics. Full wave rectifiers are commonly used in power supplies, battery chargers, and other applications requiring a steady DC voltage. The direct-write printing technique used stretchable silver ink and interconnects composed of electrically conductive adhesive (ECA) for component attachment to create conductive traces. The circuit’s electrical characteristics are assessed using a high-frequency impedance analyzer, which analyzes the circuit’s resistance, capacitance, and inductance at various frequencies. The circuit is deliberately damaged by removing SMDs, and the research looks into the efficiency of direct write repair procedures. Direct write repair entails printing a conductive pad onto the circuit surface selectively using the same direct-write technique that was used for manufacturing the circuit. The repaired circuits are evaluated using an impedance analyzer, and the results are compared to the original circuit to determine the influence of the repair procedure on the circuit’s electrical performance.
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Yu, Chengjiao, Quanlin Dong, Chunxi Zhang, and Junen Yao. "An Improved Design of Voltage-Doubling Rectifier Circuit." In 2012 Spring Congress on Engineering and Technology (S-CET). IEEE, 2012. http://dx.doi.org/10.1109/scet.2012.6341894.
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Zuo, Lei, and Xiudong Tang. "Circuit Optimization and Vibration Analysis of Electromagnetic Energy Harvesting Systems." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87728.
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In this paper we investigate an electrical circuit and its optimization for vibration energy harvesting using electromagnetic transducer. A step-up DC-DC converter regulated by Pulse-Width Modulation (PWM) is used to boost the voltage and control the power flow. An analytical expression for the optimal power flow from the rectified electromagnetic harvester is derived as a function of PWM duty cycle, vibration amplitude and frequency. Optimal duty cycles for both continuous and discontinuous modes are obtained analytically. The impedance of electromagnetic transducer and forward voltage drop of the diodes have been taken into account. It is also interesting to note that if a large inductor is adopted between the rectifier and step-up DC-DC converter, the energy harvesting system will exactly have the effect of Coulomb friction damper.
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Chang, C. P., W. W. Yen, and Paul C. P. Chao. "A New Wireless Power Transfer Circuit With a Single-Stage Regulating Rectifier for Flexible Sensor Patches." In ASME 2020 29th Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/isps2020-1951.
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Abstract A new wireless power transfer circuit with a single-stage regulating rectifier is designed and validated with satisfactory efficiency for flexible sensor patches. Since the battery is bulky and cannot be fabricated on a flexible substrate, the power source of the electronic patch is realized by wireless power transfer. Magnetic resonance transmission power at 13.56 MHz in the ISM band is adopted to make possible wireless power transfer. Furthermore, for high conversion efficiency, a new single-stage regulating rectifier is designed and implemented at the receiver side of the sensor patch. An active switching full-wave bridge rectifier is designed to reduce conduction loss and increase the voltage-conversion rate. A delay lock loop feedback controller overcomes the switching delays at high frequencies that significantly undermine power conversion efficiency. The voltage rectification and regulation are achieved simultaneously in a single-stage rectifier through 1X/0X mode control. The PFM control is adopted to select the switching frequency of the system in order to maximize the transient response during heavy load and to minimize the switching power losses during light load. The circuit is fabricated via the TSMC 0.35 μm process. The output efficiency of the circuitry was improved by 5–10% in light load as compared with the circuit without PFM control, while the peak efficiency reaches favorable 86%.