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Journal articles on the topic 'Current-fed push-pull'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Yuan, You Chen, Yang Zhang, and Yu Wei Chen. "Current-Fed Flyback Push-Pull DC-DC Converter Based on Three-Phase Transformer." Applied Mechanics and Materials 614 (September 2014): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amm.614.164.

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Three-phase current-fed flyback push-pull dc-dc converter is proposed in this paper, which is a new circuit topology putting into practice based on current-fed flyback push-pull dc-dc converter. Structure is simplified; cost is cut down; efficiency and reliability are improved all by the high frequency three-phase transformer technique that carries out functions of flyback transformer as well as push-pull transformer at the same time. Three-phase transformer can be separated into relatively independent functions of flyback transformer and push-pull transformer with the reluctance produced by the magnetic gap in the central phase; the flyback transformer produces only common-mode flux in the magnetic circuit of push-pull transformer and does not influence its output signal; the magnetic flux in push-pull transformer is blocked by the magnetic gap and can only flow through the outer magnetic loop. Investigational device is designed; static and dynamic characteristics are observed and test results are verified by the experimentation.

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2

Abdolkhani, Ali, and Aiguo Patrick Hu. "Improved autonomous current‐fed push–pull resonant inverter." IET Power Electronics 7, no. 8 (2014): 2103–10. http://dx.doi.org/10.1049/iet-pel.2013.0749.

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3

S, Athira, and Deepa Kaliyaperumal. "Modified Bidirectional Converter with Current Fed Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 2 (2015): 387. http://dx.doi.org/10.11591/ijpeds.v6.i2.pp387-395.

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A bidirectional dc-dc converter with multiple outputs are concatenated with a high frequency current source parallel resonant push pull inverter is presented in this paper. The two outputs are added together and it is taken as the input source for the inverter. The current source parallel resonant push pull inverter implemented here with high frequency applications like induction heating, Fluorescent lighting, Digital signal processing sonar. This paper proposes a simple photovoltaic power system consists of a bidirectional converter and a current fed inverter for regulating the load variations. Solar power is used as the input source for the system. Simulation of the proposed system is carried out in PSIM software and experimentally verified the results.

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4

Miranda-Terán, Eldin Mario, Fernando Lessa Tofoli, Grover Victor Torrico Bascopé, and Rene Pastor Torrico Bascopé. "Modified Active-Clamped Current-Fed DC–DC Push–Pull Converter." Energies 16, no. 17 (2023): 6300. http://dx.doi.org/10.3390/en16176300.

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This work presents a modified version of the current-fed dc–dc push–pull converter associated with an active clamping circuit for mitigating voltage spikes on the primary-side switches. Unlike the traditional push–pull topology, saturation due to asymmetrical gating signals applied to the active switches is not likely to occur in the high-frequency transformer because the converter allows for connecting a blocking capacitor in series with the primary winding. In addition, the leakage inductance will not cause high voltage spikes on the primary-side semiconductors owing to the clamping capacitors. Since all active switches operate under the zero-voltage switching (ZVS) condition, one can obtain a high efficiency over a wide load range when comparing the structure with its hard-switching counterpart. Experimental results obtained from a laboratory prototype rated at 1 kW are presented and discussed to validate the theoretical claims.

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5

Andersen, R. L., and I. Barbi. "A Three-Phase Current-Fed Push–Pull DC–DC Converter." IEEE Transactions on Power Electronics 24, no. 2 (2009): 358–68. http://dx.doi.org/10.1109/tpel.2008.2007727.

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6

Ohtsu, S., T. Yamashita, K. Yamamoto, and T. Sugiura. "Stability in high-output-voltage push-pull current-fed converters." IEEE Transactions on Power Electronics 8, no. 2 (1993): 135–39. http://dx.doi.org/10.1109/63.223964.

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7

Ruiz-Caballero, D. A., and I. Barbi. "A new flyback-current-fed push-pull DC-DC converter." IEEE Transactions on Power Electronics 14, no. 6 (1999): 1056–64. http://dx.doi.org/10.1109/63.803399.

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8

Costa, André Elias Lucena, and Romero Leandro Andersen. "High‐gain three‐phase current‐fed push–pull DC–DC converter." IET Power Electronics 13, no. 3 (2020): 545–56. http://dx.doi.org/10.1049/iet-pel.2019.0843.

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9

Andersen, Romero Leandro, and Ivo Barbi. "A ZVS-PWM Three-Phase Current-Fed Push–Pull DC–DC Converter." IEEE Transactions on Industrial Electronics 60, no. 3 (2013): 838–47. http://dx.doi.org/10.1109/tie.2012.2189539.

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10

Sree, K. Radha, and Akshay Kumar Rathore. "Impulse Commutated Zero-Current Switching Current-Fed Push–Pull Converter: Analysis, Design, and Experimental Results." IEEE Transactions on Industrial Electronics 62, no. 1 (2015): 363–70. http://dx.doi.org/10.1109/tie.2014.2331029.

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11

Nugraha, Syechu Dwitya, Ony Asrarul Qudsi, and Diah Septi Yanaratri. "IMPLEMENTASI CURRENT FED PUSH PULL CONVERTER MENGGUNAKAN KONTROL PI PADA APLIKASI RUMAH MANDIRI." INOVTEK POLBENG 8, no. 1 (2018): 67. http://dx.doi.org/10.35314/ip.v8i1.285.

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Aplikasi dari pemanfaatan energi matahari adalah sebuah mikrogrid skala rumah. Pada mikrogrid khususnya menggunakan panel surya atau photovoltaic (PV) sebagai sumber energi utama. Pada aplikasinya tegangan keluaran dari PV dinaikkan atau diturunkan dengan DC-DC konverter. Akan tetapi permasalahan yang terjadi adalah daya atau tegangan keluaran dari PV mudah berubah terhadap irradiasi matahari sehingga perlu dinaikkan dengan rating kelipatan tegangan yang tinggi mencapai 400 V untuk suplai DC bus bar. Maka dari itu pada penelitian ini akan mengaplikasikan Current Fed Push Pull Converter dengan menggunakan kontrol PI yang dapat menaikkan tegangan masukan yang bernilai 70V - 95 V menjadi 400 V dan distabilkan menggunakan metode PI. Dari hasil implementasi, sistem mampu menaikkan tegangan keluaran 400 V dan menjaga tegangan tersebut tetap stabil walaupun tegangan masukannya berubah-ubah

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12

Young-Ho Kim, Soo-Cheol Shin, Jung-Hyo Lee, Yong-Chae Jung, and Chung-Yuen Won. "Soft-Switching Current-Fed Push–Pull Converter for 250-W AC Module Applications." IEEE Transactions on Power Electronics 29, no. 2 (2014): 863–72. http://dx.doi.org/10.1109/tpel.2013.2258942.

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13

Abdolkhani, Ali, Aiguo Patrick Hu, and Jianlong Tian. "Autonomous Polyphase Current-Fed Push–Pull Resonant Converter Based on Ring Coupled Oscillators." IEEE Journal of Emerging and Selected Topics in Power Electronics 3, no. 2 (2015): 568–76. http://dx.doi.org/10.1109/jestpe.2014.2377171.

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14

Sierra, J. A., and W. Kaiser. "Comparison of fluorescent lamp stabilization methods in the current-fed push-pull inverter." IEEE Transactions on Industry Applications 36, no. 1 (2000): 105–10. http://dx.doi.org/10.1109/28.821804.

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15

Delshad, Majid, and Hosein Farzanehfard. "A new soft switched push pull current fed converter for fuel cell applications." Energy Conversion and Management 52, no. 2 (2011): 917–23. http://dx.doi.org/10.1016/j.enconman.2010.08.019.

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16

Blanes, José M., Ausias Garrigos, José A. Carrasco, Juan Ejea-Martí, and Esteban Sanchis-Kilders. "High-Efficiency Regulation Method for a Zero-Current and Zero-Voltage Current-Fed Push–Pull Converter." IEEE Transactions on Power Electronics 26, no. 2 (2011): 444–52. http://dx.doi.org/10.1109/tpel.2010.2061237.

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17

Le, Tat-Thang, Sunju Kim, and Sewan Choi. "A Four-Phase Current-Fed Push–Pull DAB Converter for Wide-Voltage-Range Applications." IEEE Transactions on Power Electronics 36, no. 10 (2021): 11383–96. http://dx.doi.org/10.1109/tpel.2021.3069964.

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18

Nayanasiri, D. R., Gilbert Hock Beng Foo, D. M. Vilathgamuwa, and D. L. Maskell. "A Switching Control Strategy for Single- and Dual-Inductor Current-Fed Push–Pull Converters." IEEE Transactions on Power Electronics 30, no. 7 (2015): 3761–71. http://dx.doi.org/10.1109/tpel.2014.2348800.

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19

Ghalebani, Pedram, Vahid Teymoori, and Fredrick Mukundi Mwaniki. "Digital peak current mode control of isolated current‐fed push‐pull DC‐DC converter with slope compensation." International Journal of Circuit Theory and Applications 50, no. 3 (2021): 779–93. http://dx.doi.org/10.1002/cta.3202.

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20

Yu, Anning, Xiaoping Zeng, Dong Xiong, Mi Tian, and Junbing Li. "An Improved Autonomous Current-Fed Push-Pull Parallel-Resonant Inverter for Inductive Power Transfer System." Energies 11, no. 10 (2018): 2653. http://dx.doi.org/10.3390/en11102653.

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In the inductive power transfer (IPT) system, it is recommended to drive the resonant inverter in zero-voltage switching (ZVS) or zero-current switching (ZCS) operation to reduce switching losses, especially in dynamic applications with variable couplings. This paper proposes an improved autonomous current-fed push-pull parallel-resonant inverter, which not only realizes the ZVS operation by tracking the zero phase angle (ZPA) frequency, but also improves the output power and overall efficiency in a wide range by reducing gate losses and switching losses. The ZPA frequencies characteristic of the parallel-parallel resonant circuit in both bifurcation and bifurcation-free regions is derived and verified by theory and experiments, and the comparative experimental results demonstrate that the improved inverter can significantly increase the output power from 7.68 W to 8.74 W and has an overall efficiency ranging from 63.5% to 72.5% compared with the traditional inverter at a 2 cm coil distance. Furthermore, with a 2-fold input voltage (24 V), the improved inverter can achieve an approximate 4-fold output power of 38.9 W and overall efficiency of 83.6% at a 2 cm coil distance.

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21

Andreičiks, Aleksandrs, Kristaps Vitols, Oskars Krievs, and Ingars Steiks. "Current Fed Step-up DC/DC Converter for Fuel Cell Inverter Applications." Scientific Journal of Riga Technical University. Power and Electrical Engineering 25, no. 25 (2009): 117–22. http://dx.doi.org/10.2478/v10144-009-0025-z.

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Current Fed Step-up DC/DC Converter for Fuel Cell Inverter ApplicationsIn order to use hydrogen fuel cells in domestic applications either as main power supply or backup source, their low DC output voltage has to be matched to the level and frequency of the utility grid AC voltage. Such power converter systems usually consist of a DC-DC converter and a DC-AC inverter. Comparison of different current fed step-up DC/DC converters is done in this paper and a double inductor step-up push-pull converter investigated, presenting simulation and experimental results. The converter is elaborated for 1200 W power to match the rated power of the proton exchange membrane (PEM) fuel cell located in hydrogen fuel cell research laboratory of Riga Technical University.

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22

Ramirez, Jovannah, Ulises A. Sanchez-Sandoval, Joaquin J. Figueroa-Zamudio, Hannah L. Walker, and Brandon G. Smythe. "6 Evaluating the Impacts of Starvation on Permethrin Resistant and Susceptible Horn Flies (Diptera: Muscidae)." Journal of Animal Science 100, Supplement_4 (2022): 2–3. http://dx.doi.org/10.1093/jas/skac313.002.

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Abstract The objective of the current study is to evaluate the impact of induced starvation on horn fly susceptibility to permethrin and general reproduction using filter paper and manure bioassays, respectively. Incorporating push-pull systems for horn fly control has recently gained much attention for use in managing this pest. However, the consequences of temporary starvation associated with the relocation of horn flies from one host to another have yet to be fully explored. Susceptible (SS) and permethrin resistant (PR) horn flies were randomly allocated to one of four treatment groups: 1- blood fed, 2- partially starved (4hr), 3- moderately starved (8hr), and 4- severely starved (12hr). Permethrin resistant flies were 1,227 times more (P &lt; 0.05) tolerant to permethrin in comparison to SS flies. Furthermore, SS blood fed flies were 1.18, 1.89, and 3.12 times more tolerant to permethrin than SS flies starved for 4, 8, and 12 hours, respectively. Egg hatching rates decreased (P &lt; 0.04) for 8hr and 12hr starved flies in comparison to blood fed flies. Larval development, as measured through manure bioassays was lower (P = 0.02) in severely starved flies in comparison to blood fed flies. Pupae sizes were unaffected (P = 0.58) by starvation and fly strain. These results indicate that susceptibility to permethrin increases as time without a blood meal increases and furthermore, offspring success is reduced specifically through egg viability. Findings from this work will help further expand current integrated pest management options for animal producers by increasing our understanding and implementation of push-pull strategies in animal production systems.

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23

Sree, K. Radha, and Akshay Kumar Rathore. "Analysis and Design of Impulse-Commutated Zero-Current-Switching Single-Inductor Current-Fed Three-Phase Push–Pull Converter." IEEE Transactions on Industry Applications 53, no. 2 (2017): 1517–26. http://dx.doi.org/10.1109/tia.2016.2626248.

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24

Tandon, Swati, and Akshay Rathore. "Analysis and Design of Series LC Partial-Resonance-Pulse-Based ZCS Current-Fed Push-Pull Converter." IEEE Transactions on Industry Applications 57, no. 4 (2021): 4232–41. http://dx.doi.org/10.1109/tia.2021.3074109.

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25

Wu, Qunfang, Qin Wang, Jialin Xu, and Zilong Xu. "Active‐clamped ZVS current‐fed push–pull isolated dc/dc converter for renewable energy conversion applications." IET Power Electronics 11, no. 2 (2018): 373–81. http://dx.doi.org/10.1049/iet-pel.2017.0144.

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26

Harada, Koosuke, and Heejun Kim. "Effects of smoothing condenser on the stability of the push-pull current-fed dc-dc converter." Electronics and Communications in Japan (Part II: Electronics) 68, no. 5 (1985): 75–84. http://dx.doi.org/10.1002/ecjb.4420680510.

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27

Xuewei, Pan, and Akshay Kumar Rathore. "Naturally Clamped Zero-Current Commutated Soft-Switching Current-Fed Push–Pull DC/DC Converter: Analysis, Design, and Experimental Results." IEEE Transactions on Power Electronics 30, no. 3 (2015): 1318–27. http://dx.doi.org/10.1109/tpel.2014.2315834.

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28

Andreiciks, Aleksandrs, Ingars Steiks, and Oskars Krievs. "Current-fed Step-up DC/DC Converter for Fuel Cell Applications with Active Overvoltage Clamping." Scientific Journal of Riga Technical University. Power and Electrical Engineering 27, no. 1 (2010): 116–21. http://dx.doi.org/10.2478/v10144-010-0032-0.

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Current-fed Step-up DC/DC Converter for Fuel Cell Applications with Active Overvoltage ClampingIn order to use hydrogen fuel cells in domestic applications either as main power supply or backup source, their low DC output voltage has to be matched to the level and frequency of the utility grid AC voltage. Such power converter systems usually consist of a DC-DC converter and a DC-AC inverter. A double inductor step-up push-pull converter is investigated in this paper, presenting simulation and experimental results for passive and active overvoltage clamping. The prototype of the investigated converter is elaborated for 1200 W power to match the rated power of the proton exchange membrane (PEM) fuel cell located in hydrogen fuel cell research laboratory.

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29

Xuewei, Pan, and Akshay Kumar Rathore. "Current-Fed Soft-Switching Push–Pull Front-End Converter-Based Bidirectional Inverter for Residential Photovoltaic Power System." IEEE Transactions on Power Electronics 29, no. 11 (2014): 6041–51. http://dx.doi.org/10.1109/tpel.2014.2301495.

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30

Castro, Ignacio, Kevin Martin, Aitor Vazquez, Manuel Arias, Diego G. Lamar, and Javier Sebastian. "An AC–DC PFC Single-Stage Dual Inductor Current-Fed Push–Pull for HB-LED Lighting Applications." IEEE Journal of Emerging and Selected Topics in Power Electronics 6, no. 1 (2018): 255–66. http://dx.doi.org/10.1109/jestpe.2017.2736250.

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31

Lee, Sangwon, Junsung Park, and Sewan Choi. "A Three-Phase Current-Fed Push–Pull DC–DC Converter With Active Clamp for Fuel Cell Applications." IEEE Transactions on Power Electronics 26, no. 8 (2011): 2266–77. http://dx.doi.org/10.1109/tpel.2010.2096477.

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32

Chu, C. L., and C. H. Li. "Analysis and design of a current-fed zero-voltage-switching and zero-current-switching CL-resonant push–pull dc–dc converter." IET Power Electronics 2, no. 4 (2009): 456–65. http://dx.doi.org/10.1049/iet-pel.2008.0157.

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33

Namadmalan, Alireza, Javad Shokrollahi Moghani, and Jafar Milimonfare. "A Current-Fed Parallel Resonant Push-Pull Inverter with a New Cascaded Coil Flux Control for Induction Heating Applications." Journal of Power Electronics 11, no. 5 (2011): 632–38. http://dx.doi.org/10.6113/jpe.2011.11.5.632.

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34

Wu, Qunfang, Qin Wang, Jinbo Li, and Zhong Wang. "ZVS three‐phase current‐fed push–pull converter employing a simple active‐clamp circuit for voltage step‐up applications." IET Power Electronics 11, no. 14 (2018): 2286–94. http://dx.doi.org/10.1049/iet-pel.2018.5529.

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35

Wu, Qunfang, Qin Wang, Jialin Xu, Hongxu Li, and Lan Xiao. "A High-Efficiency Step-Up Current-Fed Push–Pull Quasi-Resonant Converter With Fewer Components for Fuel Cell Application." IEEE Transactions on Industrial Electronics 64, no. 8 (2017): 6639–48. http://dx.doi.org/10.1109/tie.2016.2638800.

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36

Vishal G. Jotangiya. "Evaluation and Operation of Various DC-DC Converter Topologies with Effective MPPT in a Photovoltaic System." Journal of Electrical Systems 20, no. 3 (2024): 1540–51. http://dx.doi.org/10.52783/jes.3651.

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This article describes the reliable and efficient DC-DC converter for Renewable Energy Sources. The system will function more accurately when the solar panel's irradiance is low. The Maximum Power Point Tracking (MPPT) control algorithm is used to operate the similar system in order to achieve greater efficiency. The characteristics curves for solar panel current v/s voltage (I–V) and power v/s voltage (P–V) are produced by MATLAB simulation. The curves derived from the experiment results are also compared to the simulation curves. A thorough analysis of solar-fed DC–DC converters (Boost, Push-Pull, and Coupled Inductor based converter) is also carried out. The proposed converters are simulated in MATLAB. Simulation results are presented and discussed. Results demonstrate the validity of the models.

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37

Wu, Qunfang, Qin Wang, Jialin Xu, and Lan Xiao. "Implementation of an Active-Clamped Current-Fed Push–Pull Converter Employing Parallel-Inductor to Extend ZVS Range for Fuel Cell Application." IEEE Transactions on Industrial Electronics 64, no. 10 (2017): 7919–29. http://dx.doi.org/10.1109/tie.2017.2701785.

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38

Dr.R.Seyezhai and M.UmaMaheswari. "SIMULATION OF A BI-DIRECTIONAL DC-DC CONVERTER FOR PV APPLICATIONS." Electrical & Computer Engineering: An International Journal (ECIJ) 4, no. 2 (2015): 31–42. https://doi.org/10.5281/zenodo.3546958.

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Bi-directional DC-DC converter allows transfer of power between two dc sources, in either direction. In this paper the proposed converter is a combination of two topologies, namely half bridge on the primary and a current fed push pull on the secondary side of a high frequency isolation transformer. Thus providing the desired bi- directional flow of power for battery charging and discharging using only one transformer, as opposed to two in conventional schemes. In this paper, the operation of the converter in charging and discharging modes in open and closed loop is discussed and the simulations results are verified. The circuit configuration has been simulated using PSPICE. Comparisons of the simulation results for open loop and closed loop control system is performed. The results show that closed loop control system reduces distortion and the dynamic response of the converter is improved.

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39

Alonso, J. M., J. Garcia, A. J. Calleja, J. Ribas, and J. Cardesin. "Analysis, Design, and Experimentation of a High-Voltage Power Supply for Ozone Generation Based on Current-Fed Parallel-Resonant Push–Pull Inverter." IEEE Transactions on Industry Applications 41, no. 5 (2005): 1364–72. http://dx.doi.org/10.1109/tia.2005.853379.

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40

Takeuchi, Akira, Satoshi Ohtsu, and Seiichi Muroyama. "Analysis of steady-state characteristics in a push-pull current-fed high-power factor converter using a two-input-winding transformer technique." Electronics and Communications in Japan (Part II: Electronics) 79, no. 4 (1996): 85–92. http://dx.doi.org/10.1002/ecjb.4420790410.

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41

Beula, David, Megaravalli Shankarappa Indira, and Nerayanur Balaji. "High voltage power supply controller for Electrostatic precipitators." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 432–43. https://doi.org/10.11591/ijpeds.v13.i1.pp432-443.

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Gaseous exhausts from various industries pollute the environment with flyash generally filtered by electrostatic precipitators (ESPs) before being released to the atmosphere. This paper presents the development of a controller for ESP power supply. The controller maintains the voltage applied to ESP at its maximum average value by duty cycle control that results in an improvement in dust collection-efficiency. The limiting factor for the output voltage is the breakdown of gas (spark/arc) in the electrode gap of ESP. During a spark/arc condition, the duty cycle limit imposed by the controller causes a reduction in output voltage that leads to the prevention of spark/arc. The present design has a response faster than line frequency power supply controllers. The control circuit is simpler, easy to implement and uses a standard PWM controller IC. The design of power stage uses a flyback current-fed push-pull DC-DC converter with multiple secondary circuits, which has the advantages of instantaneous current limit and less voltage stress on rectifier-diodes. Simulation is performed to obtain a 1 kV, 100 W output from a 24VDC source. The results are compared with experimental values to validate the controller’s ability to achieve good load regulation during normal operation and a reduction in output voltage during spark/arc condition.

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42

David, Beula, Indira Megaravalli Shankarappa, and Balaji Nerayanur. "High voltage power supply controller for Electrostatic precipitators." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 432. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp432-443.

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Gaseous exhausts from various industries pollute the environment with fly-ash generally filtered by electrostatic precipitators (ESPs) before being released to the atmosphere. This paper presents the development of a controller for ESP power supply. The controller maintains the voltage applied to ESP at its maximum average value by duty cycle control that results in an improvement in dust collection-efficiency. The limiting factor for the output voltage is the breakdown of gas (spark/arc) in the electrode gap of ESP. During a spark/arc condition, the duty cycle limit imposed by the controller causes a reduction in output voltage that leads to the prevention of spark/arc. The present design has a response faster than line frequency power supply controllers. The control circuit is simpler, easy to implement and uses a standard PWM controller IC. The design of power stage uses a flyback current-fed push-pull DC-DC converter with multiple secondary circuits, which has the advantages of instantaneous current limit and less voltage stress on rectifier-diodes. Simulation is performed to obtain a 1 kV, 100 W output from a 24VDC source. The results are compared with experimental values to validate the controller’s ability to achieve good load regulation during normal operation and a reduction in output voltage during spark/arc condition.

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43

Stricker-Krongrad, A., R. Kozak, C. Burlet, J. P. Nicolas, and B. Beck. "Physiological regulation of hypothalamic neuropeptide Y release in lean and obese rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 273, no. 6 (1997): R2112—R2116. http://dx.doi.org/10.1152/ajpregu.1997.273.6.r2112.

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The paraventricular nucleus (PVN) of the hypothalamus is an important site for the regulation of feeding behavior. Neuropeptide Y (NPY) injected into this nucleus strongly stimulates food intake. In the current study, we measured NPY release in the PVN of unrestrained rats through the push-pull technique. The rats were placed in their habitual environment and conditions of life. NPY release was augmented by >40% ( P < 0.01) in Long-Evans rats deprived of food for 12 h. It returned to the baseline as measured in ad libitum-fed rats 90 min after food access. Its stimulation by 55 mM KCl in refed animals indicated that the whole stock of NPY was not used during a short fast. During the light-dark transition, when feeding behavior is initiated, NPY release in lean Zucker rats showed a peak 20 min after lights off and then declined. It corresponded well with the first feeding episodes. In the obese Zucker rats, this peak was absent. NPY release was totally anarchic but at a high level. The feeding behavior of the obese rats was not as time delimited as in the lean rats. This study performed in very physiological conditions therefore indicates that NPY release could drive feeding behavior in the normal life. Its dysregulation in obese rats could participate in overeating and absence of feeding rhythm measured in these rats and speed up the development of their obesity.

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44

Ajani, EN, and EM Igbokwe. "Occupational diversification among rural women in sub-saharan Africa: A review." African Journal of Food, Agriculture, Nutrition and Development 13, no. 60 (2013): 8224–37. http://dx.doi.org/10.18697/ajfand.60.11450.

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Rural women need to diversify their occupations since farming in sub - Saharan Africa is rain - fed and , therefore , seasonal. This is to enable them to acquire additional income to take care of economic responsibilities during off - season periods. This paper reviews current literature in the field in both farm and non - farm occupations and effects of occupational diversification, which varies from negative to positive effects . One major negative effect is withdrawal of critical labour from the family farm which serves as a distress push factor while t he positive effects include raisin g agricultural household income which is also referred to as dem and pull factor. The paper also discusses government initiated programmes aimed at reducing poverty, vulnerability and targeted to wards economic empowerment of rural women in Nigeria such as Bette r Life Programme (BLP), Family S upport Programme (FSP), Agricultural Development Programme (ADP), Family Economic A dvancement Programme (FEAP), National Special Programme on Food Security (NSPFS) and Family Economic Advancement Programme (FEAP). Worthy of note is that some of these programmes have failed to achieve the aims of their establishment , mainly because most of these government initiated programmes were highly politicised to the detriment of the beneficiaries. This left rural women with the option of involvement in diversification of occupations. This is t o enable them generate additional income to empower themselves economically to me et their family obligations thus reducing vulnerability and poverty among members of their households. Occupational diversification is of increasing importance for women ’s economic empowerment. This paper asserts that the contribution made by occupational diversification to rural livelihoods is a significant one that has often been ignored by policy makers who choose to focus on agriculture. The paper recommends the need for government policies and programmes to promote the development of human capital among the rural women to equip them with the necessary skills to work in non - farm activities

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Ndung’u, S., V. Ogema, M. Thiga, and P. Wandahwa. "Factors influencing the adoption of climate smart agriculture practices among smallholder farmers in Kakamega County, Kenya." African Journal of Food, Agriculture, Nutrition and Development 23, no. 10 (2023): 24759–82. http://dx.doi.org/10.18697/ajfand.125.23400.

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Most of Kenya’s population’s livelihoods and agri-food systems rely on rain-fed agriculture making them vulnerable to climate change. The adverse effects of climate change on agricultural production have necessitated the promotion of Climate-Smart Agriculture (CSA) technologies. Climate-Smart Agriculture (CSA) technologies help guide actions needed to transform and reorient agricultural systems to effectively support development and ensure food security by increasing farmers’ resilience to climate change. This study sought to ascertain the current state of CSA practices among Kakamega County's smallholder farmers to identify the main drivers of CSA adoption. Stratified sampling was used to select six sub-counties to represent the county's various agroecological zones and regions for the research sample. A combination of purposive and snowball sampling was used to select 428 smallholder CSA farmers of which 182 were adopters while 246 were dis-adopters. Primary data were collected using interview guides developed through the Kobo Collect Application. Microsoft Excel and Statistical Package for Social Sciences (SPSS) statistical packages were used to process and analyze the data. This study established that CSA technologies in Kakamega are mainly promoted by international development partners, non-governmental organizations and research organizations. In addition, the most adopted CSA technologies were agroforestry, composting, and soil and water conservation structures, while push-pull technology, conservation agriculture, and vermiculture were the least adopted. This study, further, established that smallholder farmers’ level of education, membership to a farmers’ group, interaction with extension officers and farming experience influenced adoption of CSA technologies. Other factors are those that increase household productive resources, such as land ownership, household income, and access to agricultural credit. The results of this study suggest that those who promote CSA technologies, policymakers, extension service providers, and other stakeholders should take smallholder farmers' socioeconomic and bio-physical factors into account when doing so. Key words: Climate-smart agriculture, CSA practices, CSA adoption, CSA dis-adoption, smallholder farmers

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Babu, Samuel Rajesh. "Push-Pull Converter Fed Three-Phase Inverter for Residential and Motor Load." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 2 (2015): 260. http://dx.doi.org/10.11591/ijpeds.v6.i2.pp260-267.

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<p>The proposed paper is an new approach for power conditioning of a PV (photo-voltaic) cell array. The main objective is to investigate an approach to provide and improve the delivered electric energy by means of power conditioning structures with the use of alternative renewable resources (ARRs) for remote rural residential or industrial non-linear loads. This approach employs a series-combined connected boost and buck boost DC-DC converter for power conditioning of the dc voltage provided by a photo-voltaic array. The input voltage to the combined converters is 100 V provided from two series connected PV cells, which is converted and increased to 200 V at the dc output voltage. Series-combined connected boost and buck-boost DC-DC converters operate alternatively. This helps to reduce the input ripple current and provide the required 400 Vdc on a sinusoidal PWM three-phase inverter. Analysis of the two series-combined DC-DC converters is presented along with simulation results. Simulations of the series-combined DC-DC converters are presented with an output DC voltage of 200 V and a maximum output load of <em>Po </em>= 600 W.<em></em></p>

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S, MOHAN, and M. N. DINESH. "SOLAR POWERED THREE PHASE MOTOR FOR VARIOUS APPLICATIONS." International Journal of Electronics and Electical Engineering, July 2013, 41–44. http://dx.doi.org/10.47893/ijeee.2013.1064.

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The Power electronics plays a vital role in the conversion and control of the electrical power for various applications such as heating & lightning control, electrochemical processes, DC & AC electrical machine drives, electrical welding, active power line filtering, static var compensator and many more.The main aim of the paper is to analyze and design of a current fed push pull DC-DC boost converter to integrate three phase electric motor through inverter. The regulated output which is obtained by the developed converter is fed to a typical load side inverter, and then to the various loads. To analyze the CFPP DC-DC converter in different operating cycles. The hardware circuit will be designed to test for the required output.Among the existing DC/DC converters, current-fed push-pull (CFPP) converter is a better option owing to its voltage boosting, isolation and compact characteristics.

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Lin, Chang-Hua, Javed Ahmad, Hwa-Dong Liu, and Tzu-Hsien Kao. "High Voltage Autonomous Current-Fed Push-Pull Converter with Wireless Communication Applied to X-Ray Generation." IEEE Transactions on Circuits and Systems II: Express Briefs, 2023, 1. http://dx.doi.org/10.1109/tcsii.2023.3291682.

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Khatun, Koyelia, Venkata R. Vakacharla, Akhil Raj Kizhakkan, and Akshay Kumar Rathore. "Small Signal Analysis and Control of Snubberless Naturally-Clamped Soft-Switching Current-Fed Push-Pull DC/DC Converter." IEEE Transactions on Industry Applications, 2020, 1. http://dx.doi.org/10.1109/tia.2020.2995561.

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Bal, Satarupa, Akshay Rathore, and Dipti Srinivasan. "Naturally Clamped Snubberless Soft-Switching Bidirectional Current-Fed Three-Phase Push-Pull DC/DC Converter for DC Micro-Grid Application." IEEE Transactions on Industry Applications, 2015, 1. http://dx.doi.org/10.1109/tia.2015.2487444.

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