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Journal articles on the topic 'Switched reluctance motor efficiency'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

M. Ravindran, M. Ravindran, and V. Kirubakaran V. Kirubakaran. "Energy Efficient Converter for Switched Reluctance Motor." Paripex - Indian Journal Of Research 2, no. 3 (January 15, 2012): 83–84. http://dx.doi.org/10.15373/22501991/mar2013/31.

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2

Morón, Carlos, Enrique Tremps, Angel Gomez, Alfonso Garcia, and Jose Andrés Somolinos. "Switched Reluctance Motors Control." Key Engineering Materials 605 (April 2014): 247–50. http://dx.doi.org/10.4028/www.scientific.net/kem.605.247.

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A current controlled switched reluctance motor (SRM) drive for variable speed applications with efficiency optimization is presented. A robust, modular and flexible prototyping SRM drives is proposed. It is composed of a power electronic block, a driver board, a measurement and interface board and a DSP controller board. Firing angles are computed online, the turn-on is calculated by means of the Boses rule, and the turn-off is calculated using the general theory of the optimal turn-off angle proposed by Gribble. In steady state operation, tie initial selection of firing angles is fine-tuned by means of an algorithm that minimizes the input power of the drive. A 6/4 switched reluctance motor drive prototype was tested and the experimental results show an improvement in online efficiency, a good steady-state performance and no deterioration in the dynamic response. An efficiency comparison with a commercial vector-controlled induction motor drive of the same size is also included.

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3

Suzuki, Takanori, Shinya Ito, Naoki Tanaka, Akira Chiba, Tadashi Fukao, and Hironori Ninomiya. "Development of High Efficiency Switched Reluctance Motor." IEEJ Transactions on Industry Applications 126, no. 4 (2006): 511–18. http://dx.doi.org/10.1541/ieejias.126.511.

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4

Suzuki, Takanori, Shinya Ito, Naoki Tanaka, Akira Chiba, Tadashi Fukao, and Hironori Ninomiya. "Development of high-efficiency switched reluctance motor." Electrical Engineering in Japan 162, no. 2 (2007): 73–82. http://dx.doi.org/10.1002/eej.20523.

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5

Nakazawa, Yoshihiro, Kazuhiro Ohyama, Kazuma Nouzuka, Hiroaki Fujii, Hitoshi Uehara, and Yasushi Hyakutake. "Design Method for Improving Motor Efficiency of Switched Reluctance Motor." IEEJ Transactions on Industry Applications 134, no. 7 (2014): 656–66. http://dx.doi.org/10.1541/ieejias.134.656.

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6

NAKAZAWA, YOSHIHIRO, KAZUHIRO OHYAMA, KAZUMA NOUZUKA, HIROAKI FUJII, HITOSHI UEHARA, and YASUSHI HYAKUTAKE. "Design Method for Improving Motor Efficiency of Switched Reluctance Motor." Electrical Engineering in Japan 195, no. 1 (December 16, 2015): 40–52. http://dx.doi.org/10.1002/eej.22811.

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7

Dunlop, G. "A Switched-Reluctance Motor Drive with Zero Torque Ripple and a Constant Inverter Bus Current." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 208, no. 1 (February 1994): 61–68. http://dx.doi.org/10.1243/pime_proc_1994_208_306_02.

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Switched-reluctance motors appear to be ideal industrial prime movers capable of precision speed and position control. The efficiency can be higher than for a similar-sized induction motor and the electronics less complicated for precise speed control. While the switched-reluctance drive is common in some applications, it has not been widely accepted because of the large amount of torque ripple produced. The torque ripple from the widely used induction motor is quite low and it causes less vibration in the mechanical drive train following the motor. A four-phase switched-reluctance motor can he operated in such a way as to produce a constant zero-ripple torque output. The currents in at least two of the four phases are set so that the total torque produced is constant. By precisely setting the currents in three of the four phases, a constant torque output can be obtained at a constant d.c. supply current, and the switched-reluctance motor then has similar characteristics to a d.c. series motor. A mathematical description of these non-linear currents is derived along with the individual and mutual torque contributions to the total constant torque. The equations are also shown in graphical form.

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8

Abdul Karim, Kasrul, Nurfaezah Abdullah, Auzani Jidin, and Tole Sutikno. "Switched Reluctance Motor Initial Design for Electric Vehicle using RMxprt." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (September 1, 2017): 1080. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1080-1086.

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This paper presents a design and development of 8/6 switched reluctance motor for small electric vehicle using analytical method. The absent of permanent magnet, inherent fault tolerance capabilities, simple and robust construction make this motor become more attractive for small electric vehicle application such as electric scooter and go-kart. The switched reluctance motor is modelled using analytical formula in designing process. Later, the designed model is analyzed using ANSYS RMxprt software. In order to achieve 5kW power rating and to match with the design requirement, the switched reluctance motor model has been analyzed using RMxprt tools for the preliminary parameters design process. This tools is able to predict the output performance of motor in term of speed, flux linkage characteristic, output torque and efficiency.

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9

Kioskeridis, I., and C. Mademlis. "Maximum Efficiency in Single-Pulse Controlled Switched Reluctance Motor Drives." IEEE Transactions on Energy Conversion 20, no. 4 (December 2005): 809–17. http://dx.doi.org/10.1109/tec.2005.853738.

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10

El-Shamoty, Mohamed. "Control Strategy and Efficiency Optimization of Switched Reluctance Motor.(Dept.E)." MEJ. Mansoura Engineering Journal 19, no. 2 (June 1, 1994): 49–67. http://dx.doi.org/10.21608/bfemu.2021.163460.

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11

Li, Xiao, Chao Hui Zhang, and Ying Jie Fan. "Design of Switched Reluctance Motor Speed Control System Base on DSP." Applied Mechanics and Materials 462-463 (November 2013): 727–34. http://dx.doi.org/10.4028/www.scientific.net/amm.462-463.727.

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Switched Reluctance Motor has become one of hot topics of the international transmission for its simple structure,wide speed range and low cost, etc. In this thesis, based on TI's 32-bit DSP (TMS320F240) and following the principles of structure matching, high efficiency, easy to control, switched reluctance motor speed control system is designed using a minimum program of the main switching device. The parts of design include power converter, controller and software components.

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12

Jażdżyński, Wiesław, and Michał Majchrowicz. "Searching for An Optimal Switched Reluctance Motor Design." Archives of Electrical Engineering 63, no. 4 (December 11, 2014): 667–82. http://dx.doi.org/10.2478/aee-2014-0046.

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Abstract An approach helpful when developing an optimized construction of a 6/4 type switched reluctance motor (SRM) is described in the paper. The analytical modeling procedure, based on the reluctance network method and analytical solution of an ordinary differential equation, enables applying a gradient optimization routine and better control of optimization process. The model allows for estimation of the efficiency, torque, and acoustic noise of the motor taking into account the magnetic non-linearity and the control algorithm to keep a constant input power. A bicriterial optimization routine has been applied to find optimal constructions. Eleven geometric and winding parameters are supposed to be the optimization quantities. Analyzed constructions – the initial one and the optimized ones, were validated by means of FEM calculations. The proposed approach can be employed in designing the SRM to be a drive motor in an electrical vehicle, at least as a first attempt.

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13

Krishnan, R. "An energy-efficiency-enhanced switched reluctance motor [From Mind To Market]." IEEE Industrial Electronics Magazine 1, no. 1 (2007): 4–6. http://dx.doi.org/10.1109/mie.2007.357182.

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14

Bogusz, P. "A switched reluctance motor control method limiting the maximum dc source current in the low-speed range." Bulletin of the Polish Academy of Sciences Technical Sciences 64, no. 1 (March 1, 2016): 197–206. http://dx.doi.org/10.1515/bpasts-2016-0022.

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Abstract This paper presents a proposal of a new control method of the switched reluctance motor (SRM) in the low-speed range. The proposed method limits the maximum value of SRM drive supply current. The application of this method results also in improvement of the drive efficiency compared to the classical current control method, so it can be applied to control switched reluctance motors designed to the electric vehicles drive. The method may be effective especially in congested traffic. Nowadays, the urban traffic is characterized by frequent occurrence of traffic jams in which cars move at low speeds. The sources of supply for electric vehicles are mainly electrochemical batteries. Reduction of the maximum value of supply current allows to extend the service life of batteries and improvement of the drive efficiency extends the vehicle range.

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15

Shevkunova, Anastasia V. "Optimization algorithms in the design of switched-reluctance machines." E3S Web of Conferences 258 (2021): 11007. http://dx.doi.org/10.1051/e3sconf/202125811007.

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Currently, the level of industrial development is determined by the intellectual capacity of the equipment used. To increase the energy efficiency of production in various industries, it is necessary to introduce automated electric drives based on promising switched-reluctance motors. The geometric parameters of the active part of the switched-reluctance motor were calculated. As a criterion, the maximum value of the average value of the electromagnetic moment for the switching period was taken as the basis. Optimal design was carried out by means of the computer-aided design program developed by the author in co-authorship. It, in turn, includes optimization algorithms based on stochastic and deterministic methods. The developed program for optimizing the active part of the switched-reluctance motor was implemented using the Matlab application software package, which directly interacts with the FEMM program for calculating and visualizing electromagnetic processes. Finding the most energy-efficient engine geometry was performed in two stages, in order to determine the geometric parameters of the engine tooth zone that have a dominant influence on the value of the electromagnetic moment, as well as to ensure a guaranteed finding of the global extremum of the target function.

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16

Abunike, E. C., G. D. Umoh, I. E. Nkan, and O. I. Okoro. "Investigating the Magnetic Characteristics of 12/8 Switched Reluctance Motor for Enhanced Starting Torque." Nigerian Journal of Technological Development 18, no. 1 (June 24, 2021): 70–75. http://dx.doi.org/10.4314/njtd.v18i1.10.

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The switched reluctance motor (SRM) is among the special purpose electric machine family. It is simple in construction and avoids use of magnet so it is cheap to manufacture. The magnetic characteristics and simulation of three phase 12/8 switched reluctance motor (SRM) for enhanced starting torque is presented. The motor was analyzed using finite element technique (FET) and it was improved by focusing on the impact of important geometrical parameters on torque and efficiency. From the simulated results, the motor attained maximum efficiency of 91.7% at a speed of 1648.6 rpm and recorded a maximum torque of 321.1 Nm at a speed of 34.4 rpm. The magnetic flux lines and densities were also recorded. The maximum and minimum magnetic flux lines of the motor as observed were 1.2x10-3 Wb/m and -8.5x10-4 Wb/m respectively while the respective values of the maximum and minimum magnetic flux density of the motor were 3.8x10-1 T and 2.11x10-9 T. The results show that most of the field energy is confined within the motor and also concentrated in the air gap region of the motor. Dynamic analysis of the motor was performed for 0.02 s at a damping coefficient of 0.71 μNms/rad. The results showed that the motor has lower torque ripple. The preference to use this type of motor where high speed operation and better starting torque are needed has been highlighted in this study. Keywords: Switched reluctance motor, static characteristics, transient analysis, torque, magnetic flux

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17

Chen, Long, Haoxiang Wang, Xiaodong Sun, Yingfeng Cai, Ke Li, Kaikai Diao, and Jiangling Wu. "Development of a digital control system for a belt-driven starter generator segmented switched reluctance motor for hybrid electric vehicles." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 234, no. 9 (July 15, 2020): 975–84. http://dx.doi.org/10.1177/0959651820938945.

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A novel four-phase 16/10 belt-driven starter generator segmented switched reluctance motor has been proposed in a previous work to reduce torque ripple and increase the fault tolerance ability. Based on the previous research, the segmented switched reluctance motor digital control system is designed and presented. The digital control system including a power converter, detection circuits, and protection circuits is introduced in detail. For detection circuits, the half-detection method is employed to decrease the cost of the system. In addition, based on MicroAutoBox DS1401, a rapid control prototype platform is established. With this software system, it is easy to transfer control models and realize real-time control directly. Then, the speed closed closed-loop control for the segmented switched reluctance motor is applied to verify the proposed system. It contains current chopper control at a low speed and angle position control at a high speed. The simulation results are given, including the flux, current, torque, and efficiency range over the entire speed range of the segmented switched reluctance motor. Finally, the experimental results are presented to verify the simulation results and the effectiveness of the system. It can be found that the simulation and experimental results are consistent and acceptable, which means that the proposed digital system can operate naturally and accurately under speed closed loop control. Hence, the proposed digital system has high compatibility and practicability.

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18

Li, Jian, Ronghai Qu, Zhichu Chen, and Yun-Hyun Cho. "Optimization of Energy Conversion Loop in Switched Reluctance Motor for Efficiency Improvement." Journal of Electrical Engineering and Technology 8, no. 3 (May 1, 2013): 565–71. http://dx.doi.org/10.5370/jeet.2013.8.3.565.

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19

Flieller, Damien, Jean-Paul Louis, and Bernard Multon. "On-Line Efficiency Optimization Control of a Voltage Controlled Switched Reluctance Motor." IFAC Proceedings Volumes 30, no. 6 (May 1997): 1123–29. http://dx.doi.org/10.1016/s1474-6670(17)43513-0.

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20

El-Kharashi, Eyhab. "Design and predicting efficiency of highly nonlinear hollow cylinders switched reluctance motor." Energy Conversion and Management 48, no. 8 (August 2007): 2261–75. http://dx.doi.org/10.1016/j.enconman.2007.04.006.

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21

Pushparajesh V. and Narayana Swamy Ramaiah. "Artificial Intelligent Controller-Based Speed Control of Switched Reluctance Motor." International Journal of Organizational and Collective Intelligence 11, no. 3 (July 2021): 1–13. http://dx.doi.org/10.4018/ijoci.2021070101.

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A new control methodology for controlling the speed of switched reluctance motor (SRM) drive using an intelligent controller is proposed in this paper. The control technology consists of an outer loop fuzzy controller as a speed controller and hysteresis current controller as the inner control loop along with control of switching angles for the four-phase, 8/6 SRM. In this proposed method, the speed control is optimized using the randomly determined fuzzy parameters. Fuzzy interfaced speed control of SRM is simulated using MATLAB/SIMULINK software. The robust performance of the fuzzy logic controller is valued using the least combinations (matrix) of rules for wide ranges of speed and is compared with the proportional-integral (PI) controller. Simulation results reveal that fuzzy-based speed controller gives enhanced performance in the form of quick speed response varies between 0.02sec to 0.12 sec over an extensive range of speed thereby improving the dynamic efficiency of the SRM drive.

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22

Sun, Jing, and Xin Wang. "Design and Research of Switched Reluctance Motor Converter Used in Electric Vehicle." Applied Mechanics and Materials 40-41 (November 2010): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.277.

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In recent years, there has been a growing interest in switched reluctance motor when it is widely used in the field of electric vehicles for its simple structure, low cost, high reliability, wide speed range, high response speed, high operating efficiency and strong renewable braking ability. The performance and structure of the power converter will directly affect the efficiency, cost and reliability of SRM, so the reasonable design of SRM power converter is the key to increase the cost performance of the whole SRM speed control system. Based on the principle and advantages of SRM, an improved asymmetrical half-bridge structure power converter with soft-switching is proposed for SRD in the paper. The DC / DC switching mode power supply for switched reluctance motor drive system is also successfully designed based on LT1247 integrated chip. Experiment results show that the new type of power converter and the DC / DC switching mode power supply can work better on electric vehicles.

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23

Son, Ickjin, Grace Firsta Lukman, Mazahir Hussain Shah, Kwang-Il Jeong, and Jin-Woo Ahn. "Design Considerations and Selection of Cost-Effective Switched Reluctance Drive for Radiator Cooling Fans." Electronics 10, no. 8 (April 12, 2021): 917. http://dx.doi.org/10.3390/electronics10080917.

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Switched reluctance motors (SRMs) are simple in structure, easy to manufacture, magnet-less, brushless, and highly robust compared to other AC motors which makes them a good option for applications that operate in harsh environment. However, the motor has non-linear magnetic characteristics, and it comes with various pole-phase combinations and circuit topologies that causes many difficulties in deciding on which type to choose. In this paper, the viability of SRM as a low-cost, rugged machine for vehicle radiator cooling fan is considered. First, necessary design considerations are presented, then three commonly use types of SRM are analyzed: A 3-phase 6/4, 3-phase 12/8, and a 4-phase 8/6 to find their static and dynamic characteristics so the most suitable type can be selected. Simulation results show that the 8/6 SRM produces the highest efficiency with less phase current which reduces the converter burden. However, with asymmetric half bridge converter, eight power switches are required for 8/6 SRM and thus put a burden on the overall drive cost. As a solution, the Miller converter with only six switches for four phase SRM. To verify the proposed idea, the 8/6 SRM was manufactured and tested. The results show that Miller converter can be used for the proposed SRM with slightly reduced efficiency at 80.4%.

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24

Andrada, P., B. Blanqué, J. I. Perat, M. Torrents, E. Martinez, and J. A. Sánchez. "Comparative efficiency of switched reluctance and induction motor drives for slowly varying loads." Renewable Energy and Power Quality Journal 1, no. 04 (April 2006): 338–42. http://dx.doi.org/10.24084/repqj04.445.

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25

Munyuen, Chaowish, and Panhathai Buasri. "A Comprehensive Model of a 6/10 Switched Reluctance Motor Based on Matlab Environment." Applied Mechanics and Materials 535 (February 2014): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amm.535.3.

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Switched reluctance motor (SRM) has a simple, inexpensive and reliable construction due to the concentrated coils on stator pole and no conductors or magnets on the rotor pole. The advantages on the SRM operation such as high speed, high torque to inertia ratio, fault tolerant, low inertia and low inrush currents, make it a better choice for use in different applications. The dynamic behavior of the SRM on various conditions should be studied. This paper aim is to develop a Matlab model of a 6/10 SRM using the mathematic equations. As the results, the simulation shows the impact of load torque on the phase current profile, speed profile, and inductance profile. The simulation is performed the characteristics of the switched reluctance motor in Matlab environment to show the efficiency of the proposed model.

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26

Shang, Chaoyi, Aide Xu, Qianni Li, and Lepeng Huang. "Minimization for current peak-to-peak value in switched reluctance motor." MATEC Web of Conferences 306 (2020): 04005. http://dx.doi.org/10.1051/matecconf/202030604005.

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For switched reluctance motor (SRM), due to the excessive peak-to-peak current occurs at the initial stage under the direct instantaneous torque control (DITC) algorithm, the motor efficiency has been affected to some extent. For this propose, a DITC optimization algorithm combined with high torque per ampere (HTPA) is introduced in this paper. Based on the traditional maximum torque-to-current ratio (MTPA) principle, the changing points of the inductance slope can be calculated. These points are also refer to the maximum torque-to-current ratio. Taking these points as the basis for sector division of the mechanical angle of each phase, the operation rule is optimized in the newly divided interval to select the corresponding voltage vector. The optimal voltage vector is obtained by the method of segmented variable duty cycle modulation. The new algorithm was validated on a three-phase 12/8 switched reluctance motor. Compared to conventional DITC, HTPA-DITC reduces peak current evidently. At the same time, the three- phase stator current is reduced under the same load conditions, thereby increasing the torque-to-current ratio of the motor.

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27

Komolafe, Wagih, Valavan, Ahmed, Stuikys, and Zaghari. "A Smart Cycling Platform for Textile-Based Sensing and Wireless Power Transfer in Smart Cities." Proceedings 32, no. 1 (December 4, 2019): 7. http://dx.doi.org/10.3390/proceedings2019032007.

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This paper proposes an integrated smart cycling system for assisted cycling, energy harvesting and wireless power transfer systems on a bicycle, an enabling platform for autonomous e-textiles-based sensing. The cyclist is assisted by a switched reluctance motor, which also acts as a switched reluctance generator that harvests a peak power of 7.5 W, at 10% efficiency during cycling to power on body sensors. To demonstrate wearable on-body sensing, a thin flexible CO2 gas sensor filament, which can be woven in fabric, is presented and evaluated. Wearable inductive resonant wireless power transfer (WPT) is achieved using textile embroidered coils on the bicycle’s handle and cycling gloves, achieving more than 80% WPT efficiency from the bicycle to the cyclist’s clothing, useful for powering mobile on-body sensors.

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28

P S, Rekha, and Vijayakumar T. "Torque ripple and noise control of switched reluctance motor using an adaptive fuzzy PI control with the aid of AR algorithm." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (June 1, 2021): 1239. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp1239-1251.

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In recent days switched reluctance motor is widely used for numerous industrial applications due to its simple structure, minimum cost and maximum efficiency. Regardless of numerous exclusive benefits of the switched reluctance motor (SRM), acoustic noise of this motor is high and it is important to accomplish more analysis on the noise lessening, which is the primary goal of this paper. The major causes of acoustic noise in a SRM are torque ripple and radial magnetic force. Since radial magnetic force is highly influential by the design of motor, torque ripple control is analysed in this article for acoustic noise control. Torque ripple control of SRM is proposed using optimization in direct torque control (DTC) method. Nowadays, optimisation plays a crucial role in motor drives for enhanced control. In this paper, artificial raindrop algorithm is proposed in DTC of SRM to minimise torque ripple. Performance of proposed ARA based DTC of four-phase 8/6 SRM is analysed using Matlab and compared with the performance of fuzzy gain scheduling PI controller based DTC.

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29

Vivek, A., and Ramani Kalpathi. "Switched Reluctance Motor Actuator Based on Current Source Converter for Automotive Throttle Control." Applied Mechanics and Materials 787 (August 2015): 854–58. http://dx.doi.org/10.4028/www.scientific.net/amm.787.854.

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In this paper Switched reluctance motors are proposed for high temperature automotive applications due to the absence of magnets in comparison to conventional DC or brushless DC motors. The improvement in converter efficiency by the use of a current source converter in the front end simplifies the current control strategy that is otherwise required to be implemented in each phase coil winding. The analysis of the converter will be supported with simulation and the results for converter efficiency will be calculated. The proposed strategy will be suitable for implementation using a microcontroller based control mechanism for position control in an automotive application such as throttle control.

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30

Pushparajesh, V., Nandish B. M., and H. B. Marulasiddappa. "Hybrid intelligent controller based torque ripple minimization in switched reluctance motor drive." Bulletin of Electrical Engineering and Informatics 10, no. 3 (June 1, 2021): 1193–203. http://dx.doi.org/10.11591/eei.v10i3.3039.

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An inherent torque ripple characterizes switched reluctance technology from conventional technology. The ultimate aim of this paper is to reduce the torque ripple of the switched reluctance motor drive using genetic neural network controller based direct torque scheme. In the proposed controller network appropriate bits of data are chosen for training and testing. The proper selection of the learning rate and momentum will help in weight adjustment. Here the error is reduced which proves that the selection of voltage vectors from the vector table is precise and its results in better torque response over a wide range of speed. The simulation results reveal that the torque ripples vary between 3.25% to 1.7% for the variation in load torque and the drive speed. The experimental results for the proposed controller reveal that the torque ripple varies between 3.7% to 2.1%. Both the simulation and hardware results illustrate the efficiency of the controller.

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31

Calasan, Martin, and Vladan Vujicic. "Characteristics of switched reluctance motor operating in continuous and discontinuous conduction mode." Serbian Journal of Electrical Engineering 10, no. 1 (2013): 47–57. http://dx.doi.org/10.2298/sjee1301047c.

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This paper presents mechanical characteristics of Switched Reluctance Motor (SRM) when it operates in Discontinuous Conduction Mode (DCM) or in Continuous Conduction Mode (CCM), i.e. when the current through the phase coils (windings) flows discontinuously or continuously. Firstly, in order to maximize the output power of SRM optimization of its control parameters was performed, such that the peak and RMS values of the current do not exceed the predefined values. The optimal control parameters vs. rotation speed, as well as the corresponding characteristics of torque, power and efficiency. It is shown that with CCM the machine torque (power), at high speed, can be increased.

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32

Nakazawa, Yoshihiro, Kazuhiro Ohyama, Hiroaki Fujii, Hitoshi Uehara, and Yasushi Hyakutake. "Efficiency Improvement of Switched Reluctance Motor by Single-Pulse Control with Variable Excitation Period." IEEJ Transactions on Industry Applications 135, no. 3 (2015): 284–90. http://dx.doi.org/10.1541/ieejias.135.284.

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33

Higuchi, Tsuyoshi, Yuichi Yokoi, and Takashi Abe. "Torque Ripple and Efficiency Characteristics of a 4-Phase Segment Type Switched Reluctance Motor." IEEJ Transactions on Industry Applications 138, no. 12 (December 1, 2018): 926–32. http://dx.doi.org/10.1541/ieejias.138.926.

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34

Seon, Han-Geol, Man-Seung Han, Hyun-Jin Ahn, Jaehyuck Kim, and Young-Cheol Lim. "Efficiency Enhancement of a Low-Voltage Automotive Vacuum Cleaner Using a Switched Reluctance Motor." Energies 9, no. 9 (August 30, 2016): 692. http://dx.doi.org/10.3390/en9090692.

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35

Bayless, Jacob, Noboru Kurihara, Hiroya Sugimoto, and Akira Chiba. "Acoustic Noise Reduction of Switched Reluctance Motor With Reduced RMS Current and Enhanced Efficiency." IEEE Transactions on Energy Conversion 31, no. 2 (June 2016): 627–36. http://dx.doi.org/10.1109/tec.2015.2496968.

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36

Rahman, K. M., and S. E. Schulz. "Design of high-efficiency and high-torque-density switched reluctance motor for vehicle propulsion." IEEE Transactions on Industry Applications 38, no. 6 (November 2002): 1500–1507. http://dx.doi.org/10.1109/tia.2002.805571.

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37

da Cunha Reis, Marcio Rodrigues, Wanderson Rainer Hilario de Araujo, Viviane Margarida Gomes, Felippe dos Santos e Silva, Cleber Asmar Ganzaroli, Flavio Adalberto Gomes, Gabriel Andres Wainer, and Wesley Pacheco Calixto. "Optimized techniques for driving and control of the switched reluctance motor to improve efficiency." Control Engineering Practice 90 (September 2019): 1–18. http://dx.doi.org/10.1016/j.conengprac.2019.06.007.

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38

Toda, Hiroaki, Kunihiro Senda, Shigeo Morimoto, and Tatsuhiko Hiratani. "Influence of Various Non-Oriented Electrical Steels on Motor Efficiency and Iron Loss in Switched Reluctance Motor." IEEE Transactions on Magnetics 49, no. 7 (July 2013): 3850–53. http://dx.doi.org/10.1109/tmag.2013.2242195.

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39

Li, Cunhe, Cunshan Zhang, Jian Liu, and Dunxin Bian. "A High-Performance Indirect Torque Control Strategy for Switched Reluctance Motor Drives." Mathematical Problems in Engineering 2021 (February 15, 2021): 1–15. http://dx.doi.org/10.1155/2021/6618539.

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This paper proposes a high-performance indirect control scheme for torque ripple minimization in the switched reluctance motor (SRM) drive system. Firstly, based on the nonlinear torque-angle characteristic of SRM, a novel torque sharing function is developed to obtain the optimal current profiles such that the torque ripple is minimized with reduced copper losses. Secondly, in order to track current accurately and indirectly achieve high-performance torque control, a robust current controller is derived through the Lyapunov stability theory. The proposed robust current controller not only considers the motor parameter modeling errors but also realizes the fixed frequency current control by introducing the pulse width modulation method. Further, a disturbance-observer-based speed controller is derived to regulate the motor speed accurately, and the load torque is considered an unknown disturbance. The simulations and experiments on a 1.5 kW SRM prototype are carried out to demonstrate the effectiveness of the proposed high-performance indirect torque control strategy. Results verify the superiority of the proposed strategy with respect to the torque ripple suppression, system efficiency, and antidisturbance.

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40

Zan, Xiaoshu, Hang Lin, Guanqun Xu, Tiejun Zhao, and Yi Gong. "Control Strategy of Parallel Systems with Efficiency Optimisation in Switched Reluctance Generators." Power Electronics and Drives 6, no. 1 (January 1, 2021): 61–74. http://dx.doi.org/10.2478/pead-2021-0003.

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Abstract To solve motor heating and life shortening of parallel switched reluctance generator (SRG) induced by uneven output currents due to different external characteristics, we generally adopt current sharing control (CSC) to make each parallel generator undertake large load currents on average to improve the reliability of parallel power generation system. However, the method usually causes additional loss of power because it does not consider the efficiency characteristics of each parallel generator. Therefore, with the efficiency expression for the parallel system of SRG established and analysed, the control strategy based on differential evolution (DE) algorithm is proposed as a mechanism by which to enhance generating capacity and reliability of multi-machine power generation from the perspective of efficiency optimisation. We re-adjust the reference current of each parallel generator to transform the working point of each generator and implement the efficiency optimisation of parallel system. The performance of the proposed control method is evaluated in detail by the simulation and experiment, and comparison with traditional CSC is carried out as well.

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41

Huang, Wen-Nan, and Ching-Cheng Teng. "A simple reluctance-based efficiency control strategy taking equivalent magnetic inductance into account for the switched reluctance motor drives." Journal of Magnetism and Magnetic Materials 282 (November 2004): 364–68. http://dx.doi.org/10.1016/j.jmmm.2004.04.085.

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42

Pinto, M. B. S., G. P. Viajante, E. N. Chaves, M. A. A. Freitas, M. E. Oliveira, and J. A. Santos. "Comparative Analysis of Dynamic Performance Between Switched Reluctance Motors 6x4 and 8x6." Renewable Energy and Power Quality Journal 19 (September 2021): 282–86. http://dx.doi.org/10.24084/repqj19.276.

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This paper presents a comparative study between the Switched Reluctance Machine (SRM) 8x6 and 6x4 operating as a motor with both 60kW of power. The computer simulation was performed in Matlab™ / Simulink® environment and allowed the machine behavior under various operating conditions to be verified. This work made it possible to evaluate: phase voltage and current, speed, torque and efficiency. Comparative results between the two machines will be presented and discussed.

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Gao, Jie, He Xu Sun, Bing Gao, Lin He, and Yan Dong. "Modeling of the Power Factor Correction of 8/6 Poles Switched Reluctance Motors." Advanced Materials Research 505 (April 2012): 209–15. http://dx.doi.org/10.4028/www.scientific.net/amr.505.209.

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In the traditional power topology structure of switched reluctance motor (SRM), the ideal DC bus voltage is supplied by the circuit which is composed by a rectifier bridge and a filter capacitor. The capacitor is usually large to reduce the torque ripple, so the conducting time of AC source is very short and the power factor is reductive. A novel power topology structure of SRM is presented in this paper, and it is applied to the traditional split-phase structure to carry out power factor correction (PFC). This paper sets up the two-phase simultaneous excitation of four phases 8/6 poles SRD based on MATLAB/SIMULINK, and analyzes the current, voltage, torque etc. of two-phase excitation. The simulation results proves that the novel topology is not only improving the power factor but also optimizing the motor starting performance and efficiency, and it provides a feasible way for the study of energy conservation and efficient SRM.

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Xiang, Qian Wen, Xiao Fu Ji, and Yu Kun Sun. "Performance and Design of an SRM with Amorphous Stator." Advanced Materials Research 750-752 (August 2013): 999–1002. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.999.

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The performance of the switched reluctance motor (SRM) greatly depends on magnetic properties of core material since it consists of only laminated-core and windings. This paper analyses the performance of an SRM with amorphous stator, which has very low iron losses. Copper loss, iron loss and efficiency of the SRM are estimated by finite element method. Furthermore, a suitable structure for the SRM with amorphous stator is examined on the optimization design.

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45

Bober, Peter, and Želmíra Ferková. "Comparison of an Off-Line Optimized Firing Angle Modulation and Torque Sharing Functions for Switched Reluctance Motor Control." Energies 13, no. 10 (May 12, 2020): 2435. http://dx.doi.org/10.3390/en13102435.

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In this paper, a comparison of the simple firing angle modulation method (FAM) and the more advanced torque sharing function (TSF)-based control of switched reluctance motor (SRM) is presented. The off-line procedure to tailor and optimize the parameters of chosen methods for off-the-shelf SRM is explained. Objective functions for optimization are motor efficiency, torque ripple, and integral square error. The off-line optimization uses a finite element method (FEM) model of the SRM. The model was verified by measurement on the SRM. Simulation results showed that FAM has comparable efficiency to TSF, but has a much higher value of torque ripple. The presented off-line procedure can be used for single or multi-objective optimization.

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Tomczewski, Krzysztof, Krzysztof Wrobel, Daniel Rataj, and Grzegorz Trzmiel. "A Switched Reluctance Motor Drive Controller Based on an FPGA Device with a Complex PID Regulator." Energies 14, no. 5 (March 5, 2021): 1423. http://dx.doi.org/10.3390/en14051423.

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This paper presents a proposal for a new type of regulator for switched reluctance motor (SRM) drives. The proposed regulator enables a significant extension of the rotational speed range and drive output power. This regulator is characterized by a complex structure, including two regulation modules: voltage and phase supply switch-on angle. The voltage module includes a proportional integral derivative (PID) voltage regulator. During its operation, the value of the phase supply switch-on angle and the width of the phase supply range are determined as a result of interpolation of the data previously determined in the simulation program. The other module contains the PID controller of the phase supply switch-on angle. The values of the angles included in the tables have been determined so as to ensure that the drive works with the greatest possible efficiency. The control method is determined based on the current operating parameters of the drive, i.e., torque and speed. The operation of the regulator was simulated in the MATLAB Simulink program. The regulator presented here was implemented in a field programmable gate array (FPGA). Tests of the regulator’s operation in the prototype system were carried out in the field of control of commutation angles.

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Zhang, Jingwei, Honghua Wang, Sa Zhu, and Tianhang Lu. "Multi-Physics Multi-Objective Optimal Design of Bearingless Switched Reluctance Motor Based on Finite-Element Method." Energies 12, no. 12 (June 20, 2019): 2374. http://dx.doi.org/10.3390/en12122374.

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The bearingless switched reluctance motor (BSRM) integrates the switched reluctance motor (SRM) with the magnetic bearings, which avoids mechanical bearings-loss and makes it promising in high-speed applications. In this paper, a comprehensive framework for the multi-physics multi-objective optimal design of BSRMs based on finite-element method (FEM) is proposed. At first, the 2-D electromagnetic model of a fabricated initial design prototype is built and solved by the open-source FEM software, Elmer. The iron loss model in Elmer based on the Fourier series is modified by a transient iron loss model with less computation time. Besides, a simplified lumped-parameter (LP) thermal model of the BSRM is applied to estimate the temperature rise of BSRM in the steady state. Then, the comprehensive framework for the multi-physics multi-objective optimal design of BSRMs based on FEM is proposed. The objectives, constraints, and decision variables for optimization are determined. The multi-objective genetic particle swarm optimizer is utilized to obtain the Pareto front of optimization. The electromagnetic performance of the final optimal design is compared with the initial design. Comparison results show that the average electromagnetic torque and the efficiency are significantly enhanced.

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Navardi, Mohammad Javad, Behnaz Babaghorbani, and Abbas Ketabi. "Efficiency improvement and torque ripple minimization of Switched Reluctance Motor using FEM and Seeker Optimization Algorithm." Energy Conversion and Management 78 (February 2014): 237–44. http://dx.doi.org/10.1016/j.enconman.2013.11.001.

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49

Okada, Takeshi, Takashi Kosaka, Hiroaki Matsumori, and Nobuyuki Matsui. "Comparative Study on Hybrid Excitation Flux Switching Motors without and with Variably Magnetizable Permanent Magnets for Electrified Vehicle Propulsion." World Electric Vehicle Journal 12, no. 2 (April 2, 2021): 58. http://dx.doi.org/10.3390/wevj12020058.

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A demand for high efficiency traction motors has been accelerated by the promotion of electrified vehicles, such as battery and fuel cell electric vehicles. As a part of development of the high efficiency traction motor, this paper reports a comparative study on two kinds of hybrid excitation flux switching motors (HEFSM) as a variable flux machine. One is the conventional HEFSM, which consists of a stator with constantly magnetized-permanent magnets, field excitation coils (FECs) and three-phase armature windings, and a rotor with salient poles like a switched reluctance motor. The other is a HEFSM employing variably magnetizable-permanent magnets (VM-PMs) that replace a part in the FEC slot area in the conventional one. Based on the variable magnetization nature of VM-PMs, the latter HEFSM promises that the replacement of magnetomotive force (mmf) of FECs with that of the VM-PMs makes the motor efficiency better at both low- and high-speed under the low-torque condition, that is, at both urban driving or highway cruising. To verify that, finite element analysis- (FEA)-based design simulations, as well as experimental performance evaluations for the two kinds of HEFSM, were conducted under reasonable dimensional and electrical constraints. As a result, it is shown that the latter HEFSM can achieve higher motor efficiency at the low-torque and high-speed region while keeping the motor efficiency at the low-torque and low-speed region.

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Ishihara, Yuji, Makoto Sugiura, Hiroki Ishikawa, and Haruo Naitoh. "Improving the Efficiency of Switched Reluctance Motors using a Step-Skewed Rotor." IEEJ Journal of Industry Applications 4, no. 4 (2015): 445–53. http://dx.doi.org/10.1541/ieejjia.4.445.

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