Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941776
Lisong He, Dongliang Ke, Jinsong Kang, Fengxiang Wang
Among all the different fault types in permanent magnet synchronous machines (PMSMs), the stator inter-turn short circuit fault is one of the most severe, which can jeopardize the safety of PMSM drive systems easily. This article proposes a diagnosis method of inter-turn short circuit fault for PMSMs based on the duration of the space vectors via finite control set model predictive control (FCS-MPC) strategy. The method is performed by evaluating whether the duration of different space vectors has changed or not, following that, the specific changing space vectors are used to locate the phase sequence where the fault happened. Furthermore, this study proposes that the observed space vector distribution characteristics can be qualitatively explained by closed-loop control for the suppression of inter-turn short circuit fault. The prominent advantage of the proposed method is that no additional sensors are necessary, the little burden is added to the microcontroller and it also works well for variable frequency control. The results of the simulation verify the effectiveness of the proposed diagnosis method to detect and locate inter-turn short circuit faults.
{"title":"Inter-Turn Short Circuit Fault Diagnosis for PMSM Predictive Control System Based on Duration-Space-Vector Technique","authors":"Lisong He, Dongliang Ke, Jinsong Kang, Fengxiang Wang","doi":"10.1109/ITECAsia-Pacific56316.2022.9941776","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941776","url":null,"abstract":"Among all the different fault types in permanent magnet synchronous machines (PMSMs), the stator inter-turn short circuit fault is one of the most severe, which can jeopardize the safety of PMSM drive systems easily. This article proposes a diagnosis method of inter-turn short circuit fault for PMSMs based on the duration of the space vectors via finite control set model predictive control (FCS-MPC) strategy. The method is performed by evaluating whether the duration of different space vectors has changed or not, following that, the specific changing space vectors are used to locate the phase sequence where the fault happened. Furthermore, this study proposes that the observed space vector distribution characteristics can be qualitatively explained by closed-loop control for the suppression of inter-turn short circuit fault. The prominent advantage of the proposed method is that no additional sensors are necessary, the little burden is added to the microcontroller and it also works well for variable frequency control. The results of the simulation verify the effectiveness of the proposed diagnosis method to detect and locate inter-turn short circuit faults.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"55 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85018490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9942016
Zekai Lyu, Lijian Wu, Youtong Fang
The LC filter can be added between pulse width modulation (PWM) inverter and permanent-magnet synchronous machine (PMSM) to reduce the insulation stress and current harmonics. However, the LCL resonance can threaten the stability of the system. This paper focuses on the passive damping method for LC-equipped PMSM drive system to suppress the resonance without the need of additional sensors or changes in the control software. The inherent damping characteristic of the drive system is derived. Then, two kinds of passive damping schemes are investigated and compared. The analysis and design are validated with simulation results.
{"title":"Analysis and Design of Passive Damping for LC-Equipped Permanent-Magnet Synchronous Machine Drive System","authors":"Zekai Lyu, Lijian Wu, Youtong Fang","doi":"10.1109/ITECAsia-Pacific56316.2022.9942016","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942016","url":null,"abstract":"The LC filter can be added between pulse width modulation (PWM) inverter and permanent-magnet synchronous machine (PMSM) to reduce the insulation stress and current harmonics. However, the LCL resonance can threaten the stability of the system. This paper focuses on the passive damping method for LC-equipped PMSM drive system to suppress the resonance without the need of additional sensors or changes in the control software. The inherent damping characteristic of the drive system is derived. Then, two kinds of passive damping schemes are investigated and compared. The analysis and design are validated with simulation results.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"20 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72815886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941839
Mengmeng Cui, T. Zou, Dawei Li, D. Gerada, R. Qu, C. Gerada
Detailed airgap permeance information is of great importance for analyzing the operation principle and optimizing the electromagnetic field distribution of an electric machine with unconventional topology. So far, analytical approaches upon calculating airgap permeance have been adopted in most existing research work, while corresponding simulation-based tools have rarely been reported. In this paper, a new concept of airgap permeance calculation developed from numerical finite element tools is presented. Based on similarity of magnetic field and electric field, the airgap permeance distribution of electrical machines with various topologies can be predicted rapidly through finite element analysis (FEA) in electrostatic field. The FEA-based airgap permeance distribution can be regarded as an effective approach to validate corresponding results calculated from complex mathematical derivation. Furthermore, the characteristics of working airgap flux density harmonics introduced by magnetomotive force (MMF) of stator or rotor could be more intuitively investigated. Based on case studies of several typical machine topologies, the proposed FEA-based method will be proved of featuring wide feasibility, i.e., capable of covering stator slotting effect, rotor saliency as well as dual side saliency effect. Finally, the reasonability of the permeance calculation method is verified based on a further proposed homopolar topology within electromagnetic FEA.
{"title":"A Novel Airgap Permeance Modeling Approach for Magnetic Field Analysis of Electrical Machines Based on Electrostatic FEA","authors":"Mengmeng Cui, T. Zou, Dawei Li, D. Gerada, R. Qu, C. Gerada","doi":"10.1109/ITECAsia-Pacific56316.2022.9941839","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941839","url":null,"abstract":"Detailed airgap permeance information is of great importance for analyzing the operation principle and optimizing the electromagnetic field distribution of an electric machine with unconventional topology. So far, analytical approaches upon calculating airgap permeance have been adopted in most existing research work, while corresponding simulation-based tools have rarely been reported. In this paper, a new concept of airgap permeance calculation developed from numerical finite element tools is presented. Based on similarity of magnetic field and electric field, the airgap permeance distribution of electrical machines with various topologies can be predicted rapidly through finite element analysis (FEA) in electrostatic field. The FEA-based airgap permeance distribution can be regarded as an effective approach to validate corresponding results calculated from complex mathematical derivation. Furthermore, the characteristics of working airgap flux density harmonics introduced by magnetomotive force (MMF) of stator or rotor could be more intuitively investigated. Based on case studies of several typical machine topologies, the proposed FEA-based method will be proved of featuring wide feasibility, i.e., capable of covering stator slotting effect, rotor saliency as well as dual side saliency effect. Finally, the reasonability of the permeance calculation method is verified based on a further proposed homopolar topology within electromagnetic FEA.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"153 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74911626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thermal management of electric vehicle battery packs is vital for the batteries’ efficiency and safety. Single phase immersion cooling is an ideal cooling method for the battery thermal management due to its temperature uniformity, low cost and excellent cooling capability. This research compares the cooling performance of different flow types and flow direction for a fixed position ternary lithium battery pack at 1C, 3C and 5C discharge rate. The results show that forced flow immersion cooling can effectively reduce the maximum temperature at the battery surface, and improve the temperature uniformity, compared with static flow. Moreover, dielectric inlet and outlet are arranged in the YZ plane for the best cooling effect and uniformity for the studied battery pack. And an improved structure with baffles is proposed, which decreases the maximum surface temperature by 8°C (15.02%) and the maximum temperature difference by 15°C (54.25%) at 5C discharge rate when compared with other unimproved cases, respectively.
{"title":"Numerical Analysis of Flow Type and Direction on Single Phase Immersion Cooling for Li-ion Battery Thermal Management","authors":"Zhicheng Xin, Weiyu Tang, Wei Li, Kuang Sheng, Zan Wu","doi":"10.1109/ITECAsia-Pacific56316.2022.9942199","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942199","url":null,"abstract":"Thermal management of electric vehicle battery packs is vital for the batteries’ efficiency and safety. Single phase immersion cooling is an ideal cooling method for the battery thermal management due to its temperature uniformity, low cost and excellent cooling capability. This research compares the cooling performance of different flow types and flow direction for a fixed position ternary lithium battery pack at 1C, 3C and 5C discharge rate. The results show that forced flow immersion cooling can effectively reduce the maximum temperature at the battery surface, and improve the temperature uniformity, compared with static flow. Moreover, dielectric inlet and outlet are arranged in the YZ plane for the best cooling effect and uniformity for the studied battery pack. And an improved structure with baffles is proposed, which decreases the maximum surface temperature by 8°C (15.02%) and the maximum temperature difference by 15°C (54.25%) at 5C discharge rate when compared with other unimproved cases, respectively.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"14 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75212790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941930
Kang Zhang, Limei Wang, Xin Fang
Aiming at the problem that the permanent magnet linear synchronous motor servo system is easily affected by uncertainties such as parameter perturbation, friction and load disturbance, an adaptive nonlinear speed tracking control strategy based on immersion and invariance theory is proposed in this paper. In the control strategy, the first-order dynamic system is taken as the target mode. By establishing the mapping relationship between the kinematic equation and the target system, a nonlinear controller suitable for speed tracking is designed by using the immersion and invariance theory. At the same time, an adaptive law based on the immersion and invariance theory is designed for the time-varying external load disturbance in the servo system, so that the adaptive parameters in the controller can asymptotically track the external load disturbance. By Lyapunov stability theory, it is proved that the closed-loop control system is globally uniformly asymptotically stable at the equilibrium point. Finally, the feasibility of the proposed control method is verified by experiments, and the dynamic performance and robustness of the system can be effectively improved.
{"title":"Adaptive Nonlinear Speed Tracking Control of Permanent Magnet Linear Synchronous Motor","authors":"Kang Zhang, Limei Wang, Xin Fang","doi":"10.1109/ITECAsia-Pacific56316.2022.9941930","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941930","url":null,"abstract":"Aiming at the problem that the permanent magnet linear synchronous motor servo system is easily affected by uncertainties such as parameter perturbation, friction and load disturbance, an adaptive nonlinear speed tracking control strategy based on immersion and invariance theory is proposed in this paper. In the control strategy, the first-order dynamic system is taken as the target mode. By establishing the mapping relationship between the kinematic equation and the target system, a nonlinear controller suitable for speed tracking is designed by using the immersion and invariance theory. At the same time, an adaptive law based on the immersion and invariance theory is designed for the time-varying external load disturbance in the servo system, so that the adaptive parameters in the controller can asymptotically track the external load disturbance. By Lyapunov stability theory, it is proved that the closed-loop control system is globally uniformly asymptotically stable at the equilibrium point. Finally, the feasibility of the proposed control method is verified by experiments, and the dynamic performance and robustness of the system can be effectively improved.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"55 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74382499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941986
Seung-Hun Lee, Soori Im, Jun-Yeol Ryu, M. Lim
Since magnetic gears (MGs) can transmit torque without physical contact, which can allow low vibration and noise, and easy maintenance, it has the potential to replace reduction gears in electrical vehicles. In addition, a traction motor can be miniaturized by applying MGs to an electric propulsion system. For these reasons, much research had been conducted on the design of MGs. In the design stage, 2-dimensional (2D) finite element analysis (FEA) and 3-dimensional (3D) FEA can be used, but there are differences in torque between the two methods. Although the 3D FEA can reflect the leakage path of magnetic flux in the axial direction, it requires a lot of computational time. Therefore, in this paper, the correlation method between torque calculated by 2D and 3D FEA using an equivalent magnetic circuit is proposed. The proposed method can predict the accurate torque considering axial leakage flux, thereby reducing the computation time required for the design.
{"title":"Torque Prediction of Magnetic Gear considering 3D Axial Leakage Flux by Equivalent Magnetic Circuit","authors":"Seung-Hun Lee, Soori Im, Jun-Yeol Ryu, M. Lim","doi":"10.1109/ITECAsia-Pacific56316.2022.9941986","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941986","url":null,"abstract":"Since magnetic gears (MGs) can transmit torque without physical contact, which can allow low vibration and noise, and easy maintenance, it has the potential to replace reduction gears in electrical vehicles. In addition, a traction motor can be miniaturized by applying MGs to an electric propulsion system. For these reasons, much research had been conducted on the design of MGs. In the design stage, 2-dimensional (2D) finite element analysis (FEA) and 3-dimensional (3D) FEA can be used, but there are differences in torque between the two methods. Although the 3D FEA can reflect the leakage path of magnetic flux in the axial direction, it requires a lot of computational time. Therefore, in this paper, the correlation method between torque calculated by 2D and 3D FEA using an equivalent magnetic circuit is proposed. The proposed method can predict the accurate torque considering axial leakage flux, thereby reducing the computation time required for the design.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"27 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81267965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The appearance of the third generation of wide band gap power devices based on SiC promotes the development of power electronic converters towards much higher frequency, higher power density and smaller volume. However, with the increase of switching speed, the parasitic parameters in the circuit have more and more influence, leading to serious crosstalk problems in bridge converter. According to the characteristics of SiC MOSFET, the novel crosstalk suppression driving circuit is proposed based on the drive circuit with RCD level shift, which provides a low impedance branch for the crosstalk current, the crosstalk problem can be suppressed effectively. Then, the equivalent model of crosstalk suppression driving circuit is established, and the relationship between the capacitance and the peak value of crosstalk voltage can be obtained, which provides design reference for this circuit. The effectiveness of the proposed driving circuit and the corresponding equivalent model is verified by the double-pulse experimental test. The experimental results show that, the novel crosstalk suppression driving circuit can suppress the spike voltage induced by the crosstalk process under different voltage and current operating conditions on the premise of ensuring the switching speed, compared with the traditional driving circuit.
{"title":"A Novel Crosstalk Suppression Driving Circuit for SiC MOSFET based on Negative Voltage Level Shift","authors":"Xiang Zheng, L. Hang, Qingwei Zeng, Dong Yan, Yuanbin He, Zhen-xue He, Pingliang Zeng","doi":"10.1109/ITECAsia-Pacific56316.2022.9941912","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941912","url":null,"abstract":"The appearance of the third generation of wide band gap power devices based on SiC promotes the development of power electronic converters towards much higher frequency, higher power density and smaller volume. However, with the increase of switching speed, the parasitic parameters in the circuit have more and more influence, leading to serious crosstalk problems in bridge converter. According to the characteristics of SiC MOSFET, the novel crosstalk suppression driving circuit is proposed based on the drive circuit with RCD level shift, which provides a low impedance branch for the crosstalk current, the crosstalk problem can be suppressed effectively. Then, the equivalent model of crosstalk suppression driving circuit is established, and the relationship between the capacitance and the peak value of crosstalk voltage can be obtained, which provides design reference for this circuit. The effectiveness of the proposed driving circuit and the corresponding equivalent model is verified by the double-pulse experimental test. The experimental results show that, the novel crosstalk suppression driving circuit can suppress the spike voltage induced by the crosstalk process under different voltage and current operating conditions on the premise of ensuring the switching speed, compared with the traditional driving circuit.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"30 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81435050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941761
A. A. Hadipranoto, Grace Firsta Lukman, Jin-Woo Ahn
Switched reluctance motors are becoming increasingly attractive in various fields and for various applications including for electric vehicles. It is controlled by activating and deactivating the phases of the motor during the positive inductance slope of each phase. A simple way to do this is to excite each phase according to the edges of sensor outputs aligned to the phases. However this method is very crude and results in a fixed dwell angle. This fixed dwell angle results in unusual torque waveforms which may lead to a reduction in overall torque. This paper discusses the control of a 2-phase 4/2 SRM used for electric superchargers and introduces a simple novel control method based on sensor excitation and current threshold control. This includes a self-starting procedure and also a compensation mechanism adapted from the simple sensor-based excitation. Simulations and experiments were done to verify the proposed methods.
{"title":"Current Threshold Scheme for Torque Ripple Reduction of a 4/2 Switched Reluctance Motor","authors":"A. A. Hadipranoto, Grace Firsta Lukman, Jin-Woo Ahn","doi":"10.1109/ITECAsia-Pacific56316.2022.9941761","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941761","url":null,"abstract":"Switched reluctance motors are becoming increasingly attractive in various fields and for various applications including for electric vehicles. It is controlled by activating and deactivating the phases of the motor during the positive inductance slope of each phase. A simple way to do this is to excite each phase according to the edges of sensor outputs aligned to the phases. However this method is very crude and results in a fixed dwell angle. This fixed dwell angle results in unusual torque waveforms which may lead to a reduction in overall torque. This paper discusses the control of a 2-phase 4/2 SRM used for electric superchargers and introduces a simple novel control method based on sensor excitation and current threshold control. This includes a self-starting procedure and also a compensation mechanism adapted from the simple sensor-based excitation. Simulations and experiments were done to verify the proposed methods.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"56 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79829137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941837
Guisheng Wang, Wei Li, Qingbo Sheng, Lu Fan, Xiaohan Zhang
The power consumption of induction motor and its system is the main force of industrial power consumption, which has great energy-saving potential, and it is of great significance for energy saving and emission reduction. In order carry out scientific and reasonable energy-saving transformation of the motor system, the operation efficiency of the motor system must be estimated in real time and online. In view of the limitations of the previous motor efficiency detection, this paper proposes a non-intervention motor efficiency detection method. This method calculates the speed and torque of the motor on-line based on the improved rotor flux model reference adaptive method (MRAS) and stator flux method, and then obtains the output power of the motor. The simulation and experiment results show that the proposed method can effectively estimate the motor efficiency, and the estimated efficiency has a good follow-up to the actual efficiency of the motor under sudden load.
{"title":"Online Efficiency Prediction of Induction Motor using Model Reference Adaptvie Method","authors":"Guisheng Wang, Wei Li, Qingbo Sheng, Lu Fan, Xiaohan Zhang","doi":"10.1109/ITECAsia-Pacific56316.2022.9941837","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941837","url":null,"abstract":"The power consumption of induction motor and its system is the main force of industrial power consumption, which has great energy-saving potential, and it is of great significance for energy saving and emission reduction. In order carry out scientific and reasonable energy-saving transformation of the motor system, the operation efficiency of the motor system must be estimated in real time and online. In view of the limitations of the previous motor efficiency detection, this paper proposes a non-intervention motor efficiency detection method. This method calculates the speed and torque of the motor on-line based on the improved rotor flux model reference adaptive method (MRAS) and stator flux method, and then obtains the output power of the motor. The simulation and experiment results show that the proposed method can effectively estimate the motor efficiency, and the estimated efficiency has a good follow-up to the actual efficiency of the motor under sudden load.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77296213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The conventional (sliding mode observer) SMO employed in the sensorless control for the permanent magnet synchronous machine (PMSM) has the problems of chattering phenomena and phase delay, which always results in a large error between the estimation and actual values of the rotor speed and position. Thus, this paper proposes an improved SMO based on fuzzy logic controller (FLC) and dual second-order generalized integrator-frequency-locked loop (DSOGI-FLL) structure. The FLC is used to adjust the parameters of the SMO to improve the adaptive ability of the system and reduce the chattering phenomena. At the same time, in order to reduce the adverse effects from LPF, DSOGI-FLL is used to accurately extract the back electromotive force (back-EMF) and effectively eliminate the high-order harmonic components. The methods are verified by simulation in Matlab /Simulink and compared with the conventional SMO, the results show that the improved SMO has better performance.
{"title":"A New Composite Sensorless Control Strategy for PMSM Used in Electric Vehicle","authors":"Jiwei Huang, Guangyu Qi, Xinkai Zhu, Yucai Wu, Yonggang Li, Yuling He","doi":"10.1109/ITECAsia-Pacific56316.2022.9941785","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941785","url":null,"abstract":"The conventional (sliding mode observer) SMO employed in the sensorless control for the permanent magnet synchronous machine (PMSM) has the problems of chattering phenomena and phase delay, which always results in a large error between the estimation and actual values of the rotor speed and position. Thus, this paper proposes an improved SMO based on fuzzy logic controller (FLC) and dual second-order generalized integrator-frequency-locked loop (DSOGI-FLL) structure. The FLC is used to adjust the parameters of the SMO to improve the adaptive ability of the system and reduce the chattering phenomena. At the same time, in order to reduce the adverse effects from LPF, DSOGI-FLL is used to accurately extract the back electromotive force (back-EMF) and effectively eliminate the high-order harmonic components. The methods are verified by simulation in Matlab /Simulink and compared with the conventional SMO, the results show that the improved SMO has better performance.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"12 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78790817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：