Journal articles: 'Permanent Magnet Synchronous Motor (PMSM) Current Control'

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Zhao, Gang, and Nan Zhang. "Simulation and Analysis of PMSM Based on Space Vector Control Strategy." Advanced Materials Research 756-759 (September 2013): 472–76. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.472.

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Permanent magnet synchronous motor (PMSM) vector control strategy is studied deeply in the paper based on the analysis of the operation principle of permanent magnet synchronous motor (PMSM). Permanent magnet synchronous motor (PMSM) speed-current double closed loop control system was built by Matlab/Simulink. The simulation results showed that the system had fast response speed, high accuracy and strong anti-interference ability and so on. It also proved that Permanent magnet synchronous motor (PMSM) vector control system had good dynamic and static performances.

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Mamat, Normaisharah, Kasrul Abdul Karim, Zulkiflie Ibrahim, Tole Sutikno, Siti Azura Ahmad Tarusan, and Auzani Jidin. "Bearingless Permanent Magnet Synchronous Motor using Independent Control." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 2 (March 21, 2015): 233. http://dx.doi.org/10.11591/ijpeds.v6.i2.pp233-241.

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Bearingless permanent magnet synchronous motor (BPMSM) combines the characteristic of the conventional permanent magent synchronous motor and magnetic bearing in one electric motor. BPMSM is a kind of high performance motor due to having both advantages of PMSM and magnetic bearing with simple structure, high efficiency, and reasonable cost. The research on BPMSM is to design and analyse BPMSM by using Maxwell 2-Dimensional of ANSYS Finite Element Method (FEM). Independent suspension force model and bearingless PMSM model are developed by using the method of suspension force. Then, the mathematical model of electromagnetic torque and radial suspension force has been developed by using Matlab/Simulink. The relation between force, current, distance and other parameter are determined. This research covered the principle of suspension force, the mathematical model, FEM analysis and digital control system of bearingless PMSM. This kind of motor is widely used in high speed application such as compressors, pumps and turbines.

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Lin, Lian Dong, and Pei Jia Ren. "The Research of Permanent Magnet Synchronous Motor Predictive Current Control Algorithm." Applied Mechanics and Materials 397-400 (September 2013): 1393–97. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1393.

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To enhance the current regulation capability for PMSM when transient state, which caused by the existence of numerical delay such as current sampling and Pulse-Width Modulation (PWM) duty-cycle updating, this paper proposed a predictive current control algorithm for permanent magnet synchronous motor which based on deadbeat control. The numerical delays in conventional FOC system are eliminated in theory. Simulation and experiment results show that the PMSM (Permanent Magnet Synchronous Motor) current predictive control scheme improves both the dynamic performance and steady-state precision of the PMSM control system.

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Khanh, Pham Quoc, Viet-Anh Truong, and Ho Pham Huy Anh. "Extended Permanent Magnet Synchronous Motors Speed Range Based on the Active and Reactive Power Control of Inverters." Energies 14, no. 12 (June 15, 2021): 3549. http://dx.doi.org/10.3390/en14123549.

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The paper proposes a new speed control method to improve control quality and expand the Permanent Magnet Synchronous Motors speed range. The Permanent Magnet Synchronous Motors (PMSM) speed range enlarging is based on the newly proposed power control principle between two voltage sources instead of winding current control as the conventional Field Oriented Control method. The power management between the inverter and PMSM motor allows the Flux-Weakening obstacle to be overcome entirely, leading to a significant extension of the motor speed to a constant power range. Based on motor power control, a new control method is proposed and allows for efficiently reducing current and torque ripple caused by the imbalance between the power supply of the inverter and the power required through the desired stator current. The proposed method permits for not only an enhanced PMSM speed range, but also a robust stability in PMSM speed control. The simulation results have demonstrated the efficiency and stability of the proposed control method.

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Bensalem, Yemna, Abdellah Kouzou, Rabeh Abbassi, Houssem Jerbi, Ralph Kennel, and Mohamed Abdelrahem. "Sliding-Mode-Based Current and Speed Sensors Fault Diagnosis for Five-Phase PMSM." Energies 15, no. 1 (December 22, 2021): 71. http://dx.doi.org/10.3390/en15010071.

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The present paper deals with an active fault-tolerant speed tracking of a five-phase permanent magnet synchronous motor with currents and speed sensor failures. The active fault tolerant control scheme, integrating a sliding mode observer and backstepping controllers, is proposed to provide a continuous drive operation of the five-phase permanent magnet synchronous motor, even during more than one sensor fault occurrence. The sliding mode observer is designed to generate the residual signal necessary for the detection stage, whereas speed and current backstepping controllers handle the operation of the five-phase permanent magnet synchronous motor thanks to their ability to consider the nonlinearities of the system model in generating a control law that is robust enough in healthy and faulty cases. Furthermore, the FTC strategy uses the information received from the fault-tolerant switching block in terms of the measured and the observed currents and speed signals. To gain the maximum benefit of the sliding mode observer’s robustness to random noises and its ease of implementation, the observed currents and speed of the five-phase permanent magnet synchronous motor have been estimated. The simulation results are conducted to show the effectiveness of the proposed FTC control scheme and to prove its high performance in fault detection and tolerant control for the five-phase permanent magnet synchronous motor, since it significantly outperforms the performance provided by traditional methods.

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Fu, Qiang. "A DSP-Controlled Permanent Magnet Synchronous Motor Control System for Hybrid Vehicles." International Journal of Antennas and Propagation 2022 (July 4, 2022): 1–9. http://dx.doi.org/10.1155/2022/1996502.

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Compared with other motors, the permanent magnet synchronous motor (PMSM) is small and occupies less space. At the same time, its weight is relatively light, so it is more in line with the development trend of hybrid electric vehicle (EV) drive motor lightweight miniaturization and has been widely used. This article studies a DSP-controlled PMSM control system for hybrid vehicles. Firstly, the motor drive control system is mainly controlled by DSP2812 chip. Then, a maximum torque current ratio control method was proposed to optimize the energy efficiency of hybrid vehicles based on PMSM. The longitudinal dynamic model of the moving hybrid vehicle was obtained by force analysis. Combined with the basic equation of PMSM and the transmission system of the hybrid vehicle, the mathematical model of PMSM-EV was established. The experimental results show that the maximum torque current ratio control method applied to hybrid vehicles can effectively reduce the loss, improve the efficiency and dynamic performance, and solve the endurance problem of hybrid vehicles to a certain extent. This advantage is significant in the dynamic acceleration and deceleration of hybrid vehicles.

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Tang, Meiling, and Shengxian Zhuang. "On Speed Control of a Permanent Magnet Synchronous Motor with Current Predictive Compensation." Energies 12, no. 1 (December 26, 2018): 65. http://dx.doi.org/10.3390/en12010065.

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In this study, a current model predictive controller (MPC) is designed for a permanent magnet synchronous motor (PMSM) where the speed of the motor can be regulated precisely. First, the mathematical model, the specifications, and the drive topology of the PMSM are introduced, followed by an elaboration of the design of the MPC. The MPC is then used to predict the current in a discrete-time calculation. The phase current at the next sampling step can be estimated to compensate the current errors, thereby modifying the three-phase currents of the motor. Next, Simulink modeling of the MPC algorithm is given, with three-phase current waveforms compared when the motor is operated under the designed MPC and a traditional vector control for PMSM. Finally, the speed responses are measured when the motor is controlled by traditional control methods and the MPC approach under varied speed references and loads. In comparison with traditional controllers, both the simulation and the experimental results suggest that the MPC for the PMSM can improve the speed-tracking performance of the motor and that this motor has a fast speed response and small steady-state errors under the rated load.

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Chen, Tao, and Haihong Xiao. "Permanent Magnet Flux Linkage Identification Method of the Model Predictive Current Control System for PMSM." Mathematical Problems in Engineering 2022 (August 25, 2022): 1–11. http://dx.doi.org/10.1155/2022/7272772.

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Accurate identification of permanent magnet flux linkage can effectively improve the control performance of model predictive current control system of permanent magnet synchronous motor (PMSM). This paper reviews the existing identification methods of permanent magnet flux linkage of PMSM first and then proposes an identification method of permanent magnet flux linkage based on an improved unscented particle filter, the problem of particle diversity reduction of the traditional unscented particle filtering algorithm is solved, and the identification performance of permanent magnet flux is improved. Simulation research and experimental verification of the proposed method are carried out, and the simulation and experimental results confirm the effectiveness of the proposed method.

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Qu, Bo, and Jing Jing Liu. "Design of Control System of PMSM Based on STM32." Applied Mechanics and Materials 513-517 (February 2014): 863–66. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.863.

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This paper designs a permanent magnet synchronous motor controller based on STM32. The space vector control algorithm is introduced. The space vector control algorithm and SVPWM are realized based on STM32. The speed and current loop PID regulator can make the accurate control of permanent magnet synchronous motor. This paper presents the hardware and software design of the control system and software architecture. The result shows that the controller design is feasible and it can be widely applied to various CNS.

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Chen, Ming-Hung, and Hao-Ting Tseng. "Development of Digital Control for High Power Permanent-Magnet Synchronous Motor Drives." Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/926727.

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This paper is concerned with the development of digital control system for high power permanent-magnet synchronous motor (PMSM) to yield good speed regulation, low current harmonic, and stable output speed. The design of controller is conducted by digitizing the mathematical model of PMSM using impulse invariance technique. The predicted current estimator, which is insensitive to motor feedback currents, is proposed to function under stationary frame for harmonic current suppression. In the AC/DC power converter, mathematical model anddc-link voltage limit of the three-phase switch-mode rectifier are derived. In addition, a current controller under synchronous frame is introduced to reduce the current harmonics and increase the power factor on the input side. A digital control system for 75 kW PMSM is realized with digital signal processor (R5F5630EDDFP). Experimental results indicate that the total harmonic distortion of current is reduced from 4.1% to 2.8% for 50 kW output power by the proposed predicted current estimator technique.

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Zhou, Jian Hong, Yan Du, and Zheng Weng. "Design of Fuzzy Controllers in AC Servo System." Advanced Materials Research 668 (March 2013): 401–5. http://dx.doi.org/10.4028/www.scientific.net/amr.668.401.

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This paper introduces an ac servo control system that uses permanent magnet synchronous motor (PMSM) as object of control. It combines the feature of permanent magnet synchronous motor and servo-control, and designs the fuzzy self-adaptive of PID controller to achieve control of the position loop, speed loop and current loop. The simulation results of Matlab7.9 show that the controller has an excellent controlling effect.

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Gao, Hanying, Wen Zhang, Yu Wang, and Zhuo Chen. "Fault-Tolerant Control Strategy for 12-Phase Permanent Magnet Synchronous Motor." Energies 12, no. 18 (September 7, 2019): 3462. http://dx.doi.org/10.3390/en12183462.

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Multi-phase motors have attracted increasing attention in fields seeking high reliability, such as electric vehicles, ships, and rail transit, as they exhibit advantages, such as high reliability and fault tolerance. In this study, we consider a 12-phase permanent magnet synchronous motor (PMSM). First, a mathematical model of the 12-phase PMSM in the static coordinate system is established and the model is simplified according to the constraint condition of neutral point isolation. Second, according to the principle of invariant magnetomotive force under normal and fault conditions, two optimal control strategies of winding current, i.e. maximum torque output (MTO) and minimum copper consumption (MCC), are proposed. For a single-phase open-circuit fault, two optimization methods are used to reconstruct the residual phase current, such that the motor can maintain normal torque output and exhibit lower torque ripple under the fault state. Finally, system simulation and experimental research are conducted; the results verify the accuracy and feasibility of the fault-tolerant control strategy of the 12-phase PMSM proposed in this paper.

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13

Dong, Yan, Kai Jing, Hexu Sun, and Yi Zheng. "Discrete Current Control Strategy of Permanent Magnet Synchronous Motors." Journal of Applied Mathematics 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/525014.

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A control strategy of permanent magnet synchronous motors (PMSMs), which is different from the traditional vector control (VC) and direct torque control (DTC), is proposed. Firstly, the circular rotating magnetic field is analyzed on the simplified model and discredited into stepping magnetic field. The stepping magnetomotive force will drive the rotor to run as the stepping motor. Secondly, the stator current orientation is used to build the control model instead of rotor flux orientation. Then, the discrete current control strategy is set and adopted in positioning control. Three methods of the strategy are simulated in computer and tested on the experiment platform of PMSM. The control precision is also verified through the experiment.

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Boudjemaa, Mehimmedetsi, and Chenni Rachid. "Field Oriented Control of PMSM Supplied by Photovoltaic Source." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1233. http://dx.doi.org/10.11591/ijece.v6i3.9009.

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The Permanent magnet synchronous motor (PMSM) is suitable for so much application, such as traction, aeronautics and generally in industrial automated processes. In our work, we will study the application of PMSM in renewable energies especially solar pumping. Our objective is to model the complete system, including the photovoltaic inverter, PMSM and the centrifugal pump under Matlab/Simulink environment. Solar panels generate electrical energy as direct current by direct conversion of solar radiation using semiconductor materials made of monocrystalline, polycrystalline or amorphous silicon. The energy received depends on radiation and on ambient temperature. The permanent magnet synchronous motor (PMSM) is not stable in open loop. To control the PMSM in terms of speed, torque or position, we need to implement vector control.<br />We will establish the field oriented control of a PMSM supplied by photovoltaic source with a focus on their applications in variable speed domain.

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Boudjemaa, Mehimmedetsi, and Chenni Rachid. "Field Oriented Control of PMSM Supplied by Photovoltaic Source." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1233. http://dx.doi.org/10.11591/ijece.v6i3.pp1233-1247.

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The Permanent magnet synchronous motor (PMSM) is suitable for so much application, such as traction, aeronautics and generally in industrial automated processes. In our work, we will study the application of PMSM in renewable energies especially solar pumping. Our objective is to model the complete system, including the photovoltaic inverter, PMSM and the centrifugal pump under Matlab/Simulink environment. Solar panels generate electrical energy as direct current by direct conversion of solar radiation using semiconductor materials made of monocrystalline, polycrystalline or amorphous silicon. The energy received depends on radiation and on ambient temperature. The permanent magnet synchronous motor (PMSM) is not stable in open loop. To control the PMSM in terms of speed, torque or position, we need to implement vector control.<br />We will establish the field oriented control of a PMSM supplied by photovoltaic source with a focus on their applications in variable speed domain.

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16

Liu, Yingpei, Tao Gao, and Guo Li. "Research on an Improved Method for Permanent Magnet Synchronous Motor." Journal of Sensors 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/816421.

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In permanent magnet synchronous motor (PMSM) traditional vector control system, PI regulator is used in the speed loop, but it has some defects. An improved method of PMSM vector control is proposed in the paper. The active-disturbance rejection control (ADRC) speed regulator is designed with the input signals of given speed and real speed and the output of given stator currentqcoordinate component. Then, in order to optimize ADRC controller, the least squares support vector machines (LSSVM) optimal regression model is derived and successfully embedded in the ADRC controller. ADRC observation precision and dynamic response of the system are improved. The load disturbance effect on the system is reduced to a large extent. The system anti-interference ability is further improved. Finally, the current sensor CSNE151-100 is selected to sample PMSM stator currents. The voltage sensor JLBV1 is used to sample the stator voltage. The rotor speed of PMSM is measured by mechanical speed sensor, the type of which is BENTLY 330500. Experimental platform is constructed to verify the effectiveness of the proposed method.

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Li, Yu Lan, Tie Zhu Zhang, Hong Zhao, and Ji Zhang. "The Simulation Study of Permanent Magnet Synchronous Motor and its Hysteresis Current Control Based on AMESim." Applied Mechanics and Materials 700 (December 2014): 678–81. http://dx.doi.org/10.4028/www.scientific.net/amm.700.678.

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The paper gives a brief introduction of the permanent magnet synchronous motor (PMSM). The author gives the mathematical model under the simplified conditions and the PMSM rotor and stator impedance matrix. Besides, the author used AMESim to build a synchronous motor model on the basic of hysteresis current control strategy and set the parameters. A simulation was carried out and advantages and disadvantages of hysteresis current control strategy were analyzed.

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Kuz’menko, A. A. "Robust Control of Permanent Magnet Synchronous Motor: Synergetic Approach." Mekhatronika, Avtomatizatsiya, Upravlenie 21, no. 8 (August 5, 2020): 480–88. http://dx.doi.org/10.17587/mau.21.480-488.

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Permanent magnet synchronous motors (PMSM) are widely used in practice due to its high-energy efficiency, compactness, reliability and high regulation performance. When controlling a PMSM rotor speed, the main control principle is the principle of cascade control with PI-regulators, which includes an external control loop for speed and two internal loops for stator currents along the (d, q)-axes. There are attempts to eliminate the disadvantages of this principle using for the control laws synthesis of modern methods of nonlinear control such methods as linearization feedback, backstepping, predictive control, sliding mode control, methods of robust and adaptive control, fuzzy and neural network control, a combination of these methods etc. However, in most cases, the use of these methods are intended to by means of an appropriate method to synthesize a static or dynamic set points for the standard PI-controllers of rotor speed and currents. In this paper we propose to consider two approaches of synergetic control theory (SCT) to construct a robust control law of PMSM: a sliding mode control laws design by the SCT method with subsequent invariant manifolds aggregation and the principle of integral adaptation (PIA). These approaches implement vector control and are not guided by the standard structure of the principle of cascade regulation of PMSM. The proposed approaches simplify the stability analysis of the closed-loop system: stability conditions consist of stability conditions of functional equations of SCT and the stability conditions for finish decomposed system, which the dimension is substantially less than the dimension of the original system. From the results of the comparisons of synthesized the PMSM robust control laws, we can say that more preferable laws synthesized in accordance with the PIA. The theoretical positions of this paper are illustrated by the results of modeling, which are showing the fulfillment of the control tasks: the achievement of targets, robustness to the change of the PMSM load moment.

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Peng, Xiao Feng, Peng Xu, Li Zhang, and Wen Lue Wan. "Design of Fuzzy Self-Tunning Controller for Permanent Magnet Synchronous Motor." Advanced Materials Research 732-733 (August 2013): 1105–9. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.1105.

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Permanent magnet synchronous motors(PMSM) as a representative of high efficiency motor was being used widely in the area of medium and small-sized power, high-accuracy,high reliability and wide-scope speed governing servo system.Otherwise,because traditional PI controller can not satisfy the high-performance of PMSM servo system,Fuzzy self-tuning PI(Fuzzy-PI) control method was used in this system, and proportion and integral parameter of PI controller is optimized by fuzzy logic.By simulation experiment, it was proved that Fuzzy-PI method had more steady and less q-axis current pulse to PI control in the transition procedure of PMSM governing.

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Bai, Gong Ding, Jun Hua Liu, Wei Gang Shan, Bo Zhao, Xue Mei Zhang, Yong Chang Bian, Xin Zhong Wang, and Zhen Qi Niu. "Research of PMSM Stator Current Collection System Design Based on C8051F500 and AD7865." Applied Mechanics and Materials 433-435 (October 2013): 1458–62. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.1458.

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Permanent magnet synchronous motor (PMSM) now is widely used in hybrid vehicle drive area. When the space vector pulse width modulation (SVPWM) is used in PMSM control, the stator three phase currents must be collected for its control calculation. In this paper, a PMSM stator current collection system based on C8051F500 and AD7865 is designed, and proved to be effective with experiments.

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Ali, Machrus, and Miftachul Ulum. "Perbandingan Optimasi Kontroler Putaran Motor Permanent Magnet Syschronous Machine." Jurnal FORTECH 1, no. 1 (February 24, 2020): 12–19. http://dx.doi.org/10.32492/fortech.v1i1.218.

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Low torque low owned by PMSM (Permanent Magnet Synchronous Machine) required an excellent control model. PMSM uses the principle of faraday's law by rotating magnets in the coil by using other energy sources. When a magnet moves in a coil or vice versa. The engine rotation will change the magnetic force flux on the coil and penetrate perpendicularly to the coil so that a potential difference arises between the ends of the coil. The potential difference is caused by changes in magnetic flux. in order to get the best control method, a good speed control model is needed. In this study comparing PMSM speed control using PID, Fuzzy Logic Controller (LFC), and Adaptive Neuro-Fuzzy Inference System (ANFIS). The simulation results show that the best model on the ANFIS controller that is closest to Speed Reff (300 rpm) is that ANFIS obtains the rotational profile with the smallest undershot, the fastest steady state, the best output current profile, the best torque profile, and the best voltage profile. The results of this study will be followed by the use of other Artificial Intelligence.

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Lin, Chih-Hong. "Novel Modified Elman Neural Network Control for PMSG System Based on Wind Turbine Emulator." Mathematical Problems in Engineering 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/753756.

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The novel modified Elman neural network (NN) controlled permanent magnet synchronous generator (PMSG) system, which is directly driven by a permanent magnet synchronous motor (PMSM) based on wind turbine emulator, is proposed to control output of rectifier (AC/DC power converter) and inverter (DC/AC power converter) in this study. First, a closed loop PMSM drive control based on wind turbine emulator is designed to generate power for the PMSG system according to different wind speeds. Then, the rotor speed of the PMSG, the voltage, and current of the power converter are detected simultaneously to yield better power output of the converter. Because the PMSG system is the nonlinear and time-varying system, two sets online trained modified Elman NN controllers are developed for the tracking controllers of DC bus power and AC power to improve output performance of rectifier and inverter. Finally, experimental results are verified to show the effectiveness of the proposed control scheme.

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Huang, Hong Bo, and Yong Zhi Wang. "The Technology Study of Vector Control System for Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 341-342 (July 2013): 1018–22. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.1018.

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According to the analysis of mathematical model for permanent magnet synchronous motor (PMSM) in the d-q coordinate system, space vector width modulation (SVPWM) technology is introduced to the design of PMSM control system. The paper builds dual-closed loop control system of SVPWM for PMSM, and the outer loop is speed loop, the inner loop is current loop, at the same time, the paper builds the simulation models and makes simulation in Matlab/Simulink. The simulation results show that the SVPWM technology applied to the control system of PMSM is very successful, and the dynamic performance of control system is very good. So the application of SVPWM technology in PMSM provides a new thoughtful way for PMSM control system designing and debugging in actual application.

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Ji, Hua, Zhen Yun Han, and Hong Li Liu. "The Current Study Situation and Prospect Development of Direct Torque Control in PMSM Drive System." Advanced Materials Research 179-180 (January 2011): 713–16. http://dx.doi.org/10.4028/www.scientific.net/amr.179-180.713.

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Direct torque control (DTC) technology in asynchronous motor is one of new frequency transformation drive technology after the vector control technology. In recent years people begin to apply it to the synchronous motors. This paper introduces the application station of direct torque control in permanent magnet synchronous motor drives, discusses several key problems and analyses its development direction in the future.

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Mohd Zaihidee, Fardila, Marizan Mubin, Hang Seng Che, and Tang Jing Rui. "Development of Closed-Loop Permanent Magnet Synchronous Motor Drive System Prototype." Jurnal Kejuruteraan si5, no. 2 (November 30, 2022): 79–90. http://dx.doi.org/10.17576/jkukm-2022-si5(2)-09.

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Permanent magnet synchronous motors (PMSM) are widely used in low to mid-power applications and high-performance drives. They are preferred over brush-type motors and gradually replacing induction motors in various fields of application due to its advantages. Many researchers are proposing new control methods of PMSM drive system. However, the PMSM system is nonlinear and consists of time-varying parameters with high-order complex dynamics. Due to these factors, researchers cannot rely only on simulation results to prove superiority of their proposed controllers. To validate the results obtained by simulation, experimental validation is necessary, where a closed-loop PMSM drive system prototype has to be developed. This paper describes the development of a PMSM drive system prototype with closed-loop current, speed and position feedback using dSpace DS1104 controller board for a 1.93kW three-phase interior-mounted permanent magnet synchronous motor used for experimental validation of a proposed modified fractional order sliding mode speed controller. Using this prototype, the performance of any newly proposed control methods in real applications can be verified. Appropriate signal acquisition procedures of the feedback signals, as described in this work, are crucial to ensure the accuracy of closed-loop performance of the developed drive system.

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Zhou, Qi Xun, Yong Zhou, and Yu Feng Zhang. "Single-Loop SVPWM Modulate Strategy for Permanent Magnet Synchronous Motor Control System." Applied Mechanics and Materials 241-244 (December 2012): 1487–90. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1487.

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The advantage and disadvantage of the common control methods for permanent magnet synchronous motor (PMSM) are analyzed. Combined the sine pulse-width modulation (SPWM) and field oriented control (FOC) algorithm, a novel control method of the space vector pulse-width modulation with single closed loop is presented. In MATLAB-Simulink, based on the mathematic model of PMSM, used the S-function and the algorithm of single-loop space vector pulse-width modulation (SL-SVPWM) a servo-model of PMSM is established. Via experiment, compared SPWM method to SL-SVPWM method, the different results of phase current waveform of PMSM are drawn; and the dynamic response behavior of the motor which driven by the method of SL-SVPWM is analyzed. The results of the simulation and experiment verified that the SL-SVPWM method in this paper simplified the control system of PMSM, and this control method has better control stability.

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Li, Bing, and Yue Zhen Feng. "Researching of Speed Regulation System for AC Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 303-306 (February 2013): 1204–8. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1204.

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In order to improve the speed performance of permanent magnet synchronous motor(PMSM) speed control system, and increase system reliability and adaptability, PMSM current-speed double close loop speed control system based vector control was designed. Current loop adopted traditional PI controller, speed controller adopted adaptive fuzzy PI control method which was based on traditional PI control method and fuzzy control method. Space voltage pulse width modulation (SVPWM) technology was used to control working condition of the inverter. The system simulation model was established in MATLAB/SIMULINK environment, and ran this simulation model.The simulation results show that: This system is feasible, and adaptive fuzzy PI control system has better dynamic and static characteristics than traditional PI control method.

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Li, Huanyu, Miao Li, Chenhong Zhengs, and Bingqian Chen. "Comparison between Modified MPC and DTC Control Method for Permanent Magnet Synchronous Motor." E3S Web of Conferences 115 (2019): 02004. http://dx.doi.org/10.1051/e3sconf/201911502004.

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Direct torque control (DTC) and model predictive control (MPC) are widely used in the control of permanent magnet synchronous motor (PMSM). However, DTC for PMSM can cause large torque ripples and flux ripples, high harmonic distortion of the stator current, and high acoustic noises. Compared to DTC, MPC considers all possible switching states which can reduce the ripples of torque and flux. MPC with one-step delay compensation for PMSM and DTC with one-step delay compensation and two hysteresis comparators for PMSM have been proposed to solve some drawbacks of these two controllers. This paper makes a detailed comparison between these two improved control methods through Simulink and hardware experiments results to analyse the four indicators-torque ripple, flux ripple, transient time and THD of inverter current.

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Wang, Zhiqiang, Bo Yao, Liyan Guo, Xuefeng Jin, Xinmin Li, and Huimin Wang. "Initial Rotor Position Detection for Permanent Magnet Synchronous Motor Based on High-Frequency Voltage Injection without Filter." World Electric Vehicle Journal 11, no. 4 (November 9, 2020): 71. http://dx.doi.org/10.3390/wevj11040071.

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The accurate initial rotor position of a permanent magnet synchronous motor (PMSM) is necessary for starting the motor, and for the position sensorless control method adopted by a PMSM control system under some working conditions. This paper presents a new method to detect the initial rotor position of a permanent magnet synchronous motor (PMSM). The method does not need a low-pass filter, and has strong robustness and a simple calculation method. According to the relationship between high-frequency current response and rotor position angle θ, the rotor position angle can be obtained by arctangent and linear formulae. Finally, the magnetic polarity of the rotor is distinguished according to the change of inductance. In this method, the arctangent function is used to eliminate the filtering process and reduce the influence of the parameter deviation of the motor system on the detection accuracy of the initial position. The experimental results verify the correctness of the theoretical analysis and the effectiveness of the method.

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Fan, Sheng Wen, Dong Liu, Zheng Xi Li, Ze Ting Wang, and Peng Wang. "Design and Implementation of Sensorless Vector Control System for Permanent Magnet Synchronous Motor." Advanced Materials Research 960-961 (June 2014): 1183–88. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1183.

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This paper will introduce the sensorless vector control system of permanent magnet synchronous motor,it adopts the PLL structure to correct motor back electromotive force for the motor rotor speed/position estimation and vector control algorithm to realize speed and current loop control of PMSM.This paper established a mathematical model of the PMSM,design of system software and hardware,the principle of speed/position estimation method and simulation of system in Matlab/Simulink.Finally,it introduces the experiment of whole system in TMS320F2808-based PMSM experiment platform,the simulation and experimental result verify feasibility,fast response and practicability of the system.

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Wang, Qi, Haitao Yu, Min Wang, and Xinbo Qi. "A Novel Adaptive Neuro-Control Approach for Permanent Magnet Synchronous Motor Speed Control." Energies 11, no. 9 (September 6, 2018): 2355. http://dx.doi.org/10.3390/en11092355.

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A speed controller for permanent magnet synchronous motors (PMSMs) under the field oriented control (FOC) method is discussed in this paper. First, a novel adaptive neuro-control approach, single artificial neuron goal representation heuristic dynamic programming (SAN-GrHDP) for speed regulation of PMSMs, is presented. For both current loops, PI controllers are adopted, respectively. Compared with the conventional single artificial neuron (SAN) control strategy, the proposed approach assumes an unknown mathematic model of the PMSM and guides the selection value of parameter K online. Besides, the proposed design can develop an internal reinforcement learning signal to guide the dynamic optimal control of the PMSM in the process. Finally, nonlinear optimal control simulations and experiments on the speed regulation of a PMSM are implemented in Matlab2016a and TMS320F28335, a 32-bit floating-point digital signal processor (DSP), respectively. To achieve a comparative study, the conventional SAN and SAN-GrHDP approaches are set up under identical conditions and parameters. Simulation and experiment results verify that the proposed controller can improve the speed control performance of PMSMs.

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Wang, Jinyu, Qiang Miao, Xiaomin Zhou, Lipeng Sun, Dawei Gao, and Haifeng Lu. "Current Control Method of Vehicle Permanent Magnet Synchronous Motor Based on Active Disturbance Rejection Control." World Electric Vehicle Journal 14, no. 1 (December 23, 2022): 2. http://dx.doi.org/10.3390/wevj14010002.

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Due to the frequently changing working conditions and complex operating environment of electric vehicle permanent magnet synchronous motor(PMSM), the motor parameters change dramatically. However, the performance of the PI current regulator, which is the most widely used, is sensitive to motor parameters and has weak robustness, which will lead to the deterioration of motor control system performance. To address this problem, active disturbance rejection control (ADRC) technology is applied to the PMSM current loop control. Firstly, the traditional ADRC current regulator is designed, and the performance and parameter tuning laws of the extended state observer are analyzed by the method of frequency domain analysis. Then, the traditional ADRC algorithm is improved in three aspects: observation error compensation, utilization of model information and anti-windup. After that, simulations and bench test validation are performed. The simulation results show that the improved ADRC current regulator is more robust in the face of parameter changes. The torque step test results show that the improved ADRC current regulator has fast dynamic response without overshoot and has high robustness when the motor parameters change. The dynamic test results show that the improved ADRC current regulator has high robustness when the load, speed and motor parameters change, and the anti-windup measures designed can effectively overcome the integral saturation phenomenon.

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Labchir, Fouad, Mhammed Hasoun, Aziz El Afia, Karim Benkirane, and Mohamed Khafallah. "Direct Torque Control of Dual Three-Phase Permanent Magnet Synchronous Motor." E3S Web of Conferences 297 (2021): 01017. http://dx.doi.org/10.1051/e3sconf/202129701017.

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In this paper a direct torque control strategy for dual three-phase permanent magnet synchronous motor (DTP-PMSM) is presented, the machine has two sets of three-phase stator windings spatially phase shifted by 30 electric degrees. In order to reduce the stator harmonic current, torque and flux are controlled based on regulators and Vector Space Decomposition technique. The proposed approach has the benefits of low stator current distortion and low torque ripple. The validity and the efficiency of the selected technique are confirmed by simulation results.

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Sun, Zhangjun, Wu Ren, Le Liu, Chao Duan, and Lin Li. "Control Circuit design of permanent magnet synchronous motor control system based on DSP." Journal of Physics: Conference Series 2029, no. 1 (September 1, 2021): 012045. http://dx.doi.org/10.1088/1742-6596/2029/1/012045.

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Abstract This paper introduces the design and implementation of hardware circuit of permanent magnet synchronous motor Servo Controller Based on DSP.In this scheme,TMS320F28335 is used as the control core, and drv8312 is used as the three-phase motor driver chip. The main control circuit, communication circuit, drive circuit, current feedback circuit and protection circuit are designed in detail. The reliability of the control circuit is verified by experiments, and the servo control of PMSM is realized.

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Yang, J., M. Dou, and D. Zhao. "Iterative sliding mode observer for sensorless control of five-phase permanent magnet synchronous motor." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 6 (December 1, 2017): 845–57. http://dx.doi.org/10.1515/bpasts-2017-0092.

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AbstractDue to the star connection of the windings, the impact of the third harmonic which does not exist in three-phase permanent magnet synchronous motor (PMSM) cannot be ignored in five-phase PMSM. So the conventional sensorless control methods for three-phase PMSM cannot be applied for five-phase PMSM directly. To achieve the sensorless control for five-phase PMSM, an iterative sliding mode observer (ISMO) is proposed with the consideration of the third harmonic impact. First, a sliding mode observer (SMO) is designed based on the fivephase PMSM model with the third harmonic to reduce the chattering and obtain the equivalent signal of the back electromotive force (EMF). Then, an adaptive back EMF observer is built to estimate the motor speed and rotor position, which eliminates the low-pass filter and phase compensation module and improves the estimation accuracy. Meanwhile, by iteratively using the SMO in one current sampling period to adjust the sliding mode gains, the sliding mode chattering and estimation errors of motor speed and rotor position are further reduced. Besides, the stability of the SMO and the adaptive back EMF observer are demonstrated in detail by Lyapunov stability criteria. Experiment results verify the effectiveness of the proposed observer for sensorless control of five-phase PMSM.

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Amin, Faisal, Erwan Bin Sulaiman, Wahyu Mulyo Utomo, Hassan Ali Soomro, Mahyuzie Jenal, and Rajesh Kumar. "Modelling and Simulation of Field Oriented Control Based Permanent Magnet Synchronous Motor Drive System." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 2 (May 1, 2017): 387. http://dx.doi.org/10.11591/ijeecs.v6.i2.pp387-395.

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<p>On the basis of analysis of dq model of permanent magnet synchronous motor (PMSM) and principle of field oriented control (FOC), detail modelling of PMSM drive system and simulation results presented in this paper. The PMSM model is based on electronic components rather than mathematical blocks, this enabled us to achieve simulation results more realistic. Moreover all the modules of this simulation, such as inverter and pwm generator are made from scratch instead of using premade Simulink blocks. Simulation was carried on the basis of step change in speed and torque then made performance comparison of several parameters such as abc current, dq current, speed and torque.</p>

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Zhao, Lei, Zhen Chen, Haoyu Wang, Li Li, Xuefei Mao, Zhen Li, Jiyang Zhang, and Dengyun Wu. "An Improved Deadbeat Current Controller of PMSM Based on Bilinear Discretization." Machines 10, no. 2 (January 23, 2022): 79. http://dx.doi.org/10.3390/machines10020079.

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Based on the bilinear discretization mathematical model of permanent magnet synchronous motor (PMSM), an improved incremental deadbeat current prediction control algorithm is proposed. Aiming at the system instability caused by the forward Euler discretization method, this paper combines the deadbeat current prediction control and the improved bilinear discretization method to improve the system stability. Further, the proposed controller considers the two-beat delay of a digital system to make the mathematical model more accurate. Moreover, the proposed bilinear discretization predictive current controller is not affected by the permanent magnet flux of the motor. Then, the system stability conditions of the proposed controller are analyzed. The simulation and experimental results verify the feasibility and effectiveness of the proposed method.

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Ryang, Cho Lung, and Da Ling Wang. "Resource Efficient Architecture for Current Control Loop of Two PMSMs." Applied Mechanics and Materials 741 (March 2015): 619–22. http://dx.doi.org/10.4028/www.scientific.net/amm.741.619.

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This paper presents a novel closed current control loop of permanent magnet synchronous motor (PMSM). Conventional current control loops need two PI controllers per one PMSM. The paper provides a method for reduction of the resource consumption by using one PI controller for two PMSM. Combining with Black Box Blockset written by Verilog HDL based on Xilinx System Generator, one effective PI controller is designed instead of four PI controllers and simulated using Simulink. The utilization of FPGA resources is verified by Xilinx ISE 14.7 tool. The results show that the proposed method can reduce resource consumption and do not influence system performances observably.

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Abd Samat, Ahmad Asri, M. S. Zainal, L. N. Ismail, Wan Salha Saidon, and A. Idzwan Tajudin. "Current PI-Gain Determination for Permanent Magnet Synchronous Motor by using Particle Swarm Optimization." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 2 (May 1, 2017): 412. http://dx.doi.org/10.11591/ijeecs.v6.i2.pp412-421.

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This paper proposes the modern approach using Particle Swarm Optimization (PSO) algorithm in determining the ideal value of Proportional Integral (PI) gain for current controller of Permanent Magnet Synchronous Motor (PMSM). Controlling the torque of PMSM and optimizing the PI-gain are the main objectives of this project. The PI controller is employed to control the speed and the torque of the PMSM with the implementation of Field Oriented Control (FOC) method. This new proposed PSO technique proved that the ability in reducing the torque ripple compared to conventional heuristic method. The ideal PI-gain acquired from the PSO was included into current PI controller. From the result obtained, it shows that the viability of the PSO technique is the best to determine PI-gain for current controller.

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Lin, Lian Dong, and Xue Bing Han. "The Research of Adaptive Robust Predictive Current Control Algorithm of Permanent Magnet Synchronous Motors." Applied Mechanics and Materials 397-400 (September 2013): 1099–102. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1099.

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Predictive current control algorithm which based on deadbeat theory is studied in this paper which can improve the current control performance of PMSM. In order to obtain high control effect, on-line access to accurate motor parameters such as fault diagnosis, condition monitoring is important in many areas, especially to improve the traditional deadbeat predictive current control algorithm sensitivity to inductance error, this paper presents an inductor-based parameter identification current predictive control algorithm of permanent magnet synchronous motor based on least mean square (LMS) theory. By Simulation the identified inductance will be feed back to the control model to improve the system tolerance of inductance error. A 0.75KW PMSM is involved to verify the performance of the proposed algorithm, then present and analyse the simulation and experiment results.

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Lv, Cheng Xing, and Qian Gao. "PMSM Sensorless Field-Oriented Control System Based on Sliding-Mode Observer." Applied Mechanics and Materials 667 (October 2014): 411–16. http://dx.doi.org/10.4028/www.scientific.net/amm.667.411.

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In this paper, to eliminate the mechanical sensors, a sliding-mode observer is designed to identify the speed of permanent magnet synchronous motor (PMSM) based on a field-oriented control system. The results of simulation by Simulink indicate that the speed could be estimated and adjusted precisely. The three-phase current and torque of the motor also have a good dynamic response.

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Wu, Xuan, Hui Wang, Xiaofang Yuan, Shoudao Huang, and Derong Luo. "Design and Implementation of Recursive Model Predictive Control for Permanent Magnet Synchronous Motor Drives." Mathematical Problems in Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/431734.

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In order to control the permanent-magnet synchronous motor system (PMSM) with different disturbances and nonlinearity, an improved current control algorithm for the PMSM systems using recursive model predictive control (RMPC) is developed in this paper. As the conventional MPC has to be computed online, its iterative computational procedure needs long computing time. To enhance computational speed, a recursive method based on recursive Levenberg-Marquardt algorithm (RLMA) and iterative learning control (ILC) is introduced to solve the learning issue in MPC. RMPC is able to significantly decrease the computation cost of traditional MPC in the PMSM system. The effectiveness of the proposed algorithm has been verified by simulation and experimental results.

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Guerrero, Cuauhtémoc, Víctor Santibañez, and Jorge Villalobos-Chin. "Passivity-Based Control of Angular Velocity of PMSM with Position and Stator Currents Measurement." Memorias del Congreso Nacional de Control Automático 5, no. 1 (October 17, 2022): 410–15. http://dx.doi.org/10.58571/cnca.amca.2022.043.

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A novel control strategy for the angular velocity of the permanent magnet synchronous motor (PMSM) is presented. The control law is designed using current and position measurements only. The desired velocity signal is obtained through a linear second-order filter. Additionally, a formal stability analysis of the closed-loop system comprised of the motor dynamics and the second-order filter is also presented.

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Sun, Zhenxing, Shihua Li, Jiegao Wang, Xinghua Zhang, and Xiaohui Mo. "Adaptive composite control method of permanent magnet synchronous motor systems." Transactions of the Institute of Measurement and Control 40, no. 11 (September 21, 2017): 3345–57. http://dx.doi.org/10.1177/0142331217719956.

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With the development of digital signal processes, the relative differences of PMSM single loop in control periods between the speed loop and current loops are becoming smaller or even vanishing. Therefore, cascade control schemes seem to be unnecessary. In addition, considering the effects of disturbances and the variety of moments of inertia, this paper proposes a scheme using an adaptive non-cascade control method to design the controller, which merges speed loop and q-axis current loop into one single loop. First, an extended state observer (ESO) is employed to estimate the disturbances of the system. The estimated value is used in the feedforward compensation design to improve the capability of system anti-disturbance. Then, considering the performance degradation caused by inertia change, an adaptive control scheme is developed. By using inertia identification technology, the feedforward compensation gain can be tuned automatically according to the identification value. Several groups of simulations and experiments are carried out and the results demonstrate the effectiveness of the proposed scheme.

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Sirimanna, Samith, Thanatheepan Balachandran, and Kiruba Haran. "A Review on Magnet Loss Analysis, Validation, Design Considerations, and Reduction Strategies in Permanent Magnet Synchronous Motors." Energies 15, no. 17 (August 23, 2022): 6116. http://dx.doi.org/10.3390/en15176116.

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Eddy current losses in magnets are a major consideration in the rotor design of permanent magnet synchronous motors (PMSMs). Stator design choices and the use of modern inverters with high switching frequency introduce harmonics that can contribute to significant losses in the magnets, causing the rotor to heat up. In typical PMSMs, the lack of rotor cooling can cause the magnet’s performance to degrade at high temperatures and eventually demagnetize. This review examines a large number of studies analyzing magnet eddy current losses using analytical methods and finite-element analysis. In some of these studies, magnet segmentation is carried out to reduce the losses; however, their loss-reduction effects depend highly on the type of PMSM and the mix of stator harmonics. Magnet segmentation without considering these effects can, in fact, increase the magnet losses, in addition to the extra manufacturing efforts. Multiple design analysis show the influence of rotor–stator geometric features on magnet losses. Although measuring magnet eddy current losses for these motor designs is a tedious task, authors have proposed calorimetric and loss segregation-based techniques to provide validation. This paper addresses magnet loss modeling techniques, PM material considerations, magnet segmentation effectiveness, motor and stator design effects, and experimental validation to inform motor designers about the costs and benefits of rotor designs that minimize rotor losses.

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Ullah, Kifayat, Jaroslaw Guzinski, and Adeel Feroz Mirza. "Critical Review on Robust Speed Control Techniques for Permanent Magnet Synchronous Motor (PMSM) Speed Regulation." Energies 15, no. 3 (February 8, 2022): 1235. http://dx.doi.org/10.3390/en15031235.

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The permanent magnet synchronous motor (PMSM) is a highly efficient energy saving machine. Due to its simple structural characteristics, good heat radiation capability, and high efficiency, PMSMs are gradually replacing AC induction motors in many industrial applications. The PMSM has a nonlinear system and lies on parameters that differ over time with complex high-class dynamics. To achieve the excessive performance operation of a PMSM, it essentially needs a speed controller for providing accurate speed tracking, slight overshoot, and robust disturbance repulsion. Therefore, this article provides an overview of different robust control techniques for PMSMs and reviews the implementation of a speed controller. In view of the uncertainty factors, such as parameter perturbation and load disturbance, the H∞ robust control strategy is mainly reviewed based on the traditional control techniques, i.e., robust H∞ sliding mode controller (SMC), and H∞ robust current controller based on Hamilton–Jacobi Inequality (HJI) theory. Based on comparative analysis, this review simplifies the development trend of different control technologies used for a PMSM speed regulation system.

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Zhu, Ziwei, Jiayong Cao, Qianli Ma, and Fazhe Li. "Analysis and Verification of Phase Current Detection Method of Permanent Magnet Synchronous Motor Based on Three Sampling Resistors Configuration." Journal of Physics: Conference Series 2365, no. 1 (November 1, 2022): 012012. http://dx.doi.org/10.1088/1742-6596/2365/1/012012.

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Abstract In the permanent magnet synchronous motor (PMSM) control system, the phase current sampling unit is an important part of the whole motor control system. Traditionally, the hall-effect components are used to detecting the phase currents of the PMSM. However, the size of the hardware with Hall-effect components are often large. In this paper, a scheme of detecting the phase currents of PMSM by using three sampling resistors on the main circuit was discussed. In order to overcome the phenomenon that phase currents flow discontinuously across the three sampling resistors, a method for reconstructing the phase currents was proposed. Both simulation results and experimental results show that the phase currents can be reconstructed successfully and the high sampling accuracy can be obtained.

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Dong, Shuai, Qianfan Zhang, Hongwei Ma, and Rui Wang. "Design for the Interior Permanent Magnet Synchronous Motor Drive System Based on the Z-Source Inverter." Energies 12, no. 17 (August 30, 2019): 3350. http://dx.doi.org/10.3390/en12173350.

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The permanent magnet synchronous motor (PMSM) running above the base speed requires flux-weakening control, which is usually realized by the direct-axis demagnetization current generated by the vector control, thus leading to a decrease in the system efficiency in the flux-weakening region. In addition, the motor power output range is limited by the inverter output voltage and current level. In this paper, a Z-Source drive PMSM control system with adjustable DC-link voltage was proposed to improve the efficiency of the motor system. The proposed system was experimentally verified. The response time of DC-link voltage is 10 ms and the overshoot is 3%, indicating good dynamic characteristics. Compared with the flux-weakening scheme, the Z-Source inverter scheme can achieve higher efficiency (about 3%) when the PMSM speed was set to 650 r/min.

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Lyu, Mingcheng, Gongping Wu, Derong Luo, Fei Rong, and Shoudao Huang. "Robust Nonlinear Predictive Current Control Techniques for PMSM." Energies 12, no. 3 (January 30, 2019): 443. http://dx.doi.org/10.3390/en12030443.

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This paper proposes a robust nonlinear predictive current control (RNPCC) method for permanent magnet synchronous motor (PMSM) drives, which can optimize the current control loop performance of the PMSM system with model parameter perturbation. First, the disturbance caused by parameter perturbation was considered in the modeling of PMSM. Based on this model, the influence of parameter perturbation on the conventional predictive current control (PCC) was analyzed. The composite integral terminal sliding mode observer (SMO) was then designed to estimate the disturbance caused by the parameter perturbation in real time. Finally, a RNPCC method is developed without relying on the mathematical model of PMSM, which can effectively eliminate the influence of parameter perturbation by injecting the estimated disturbance value. Simulations and experiments verified that the proposed RNPCC method was able to remove the current error caused by the parameter perturbation during steady state operation.

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Wang, Jiabao, Shoudao Huang, Chao Guo, and Yaojing Feng. "Research on the Axial Force of Conical-Rotor Permanent Magnet Synchronous Motors with Turbines." Energies 11, no. 10 (September 22, 2018): 2532. http://dx.doi.org/10.3390/en11102532.

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The general method to suppress the axial force of the permanent magnet synchronous motor (PMSM) direct-drive turbine is to increase the number of balance devices, such as balance disks and special bearings, to counteract its influence, but this also leads to complex system structure and higher mechanical losses. Aiming to solve the above issue, this paper presents a novel PMSM structure with a conical-rotor (CR). Due to its adaptive equilibrium of axial force and simple structure of rotor with turbine, the CR-PMSM can help improve the system efficiency. Both surface-type and interior-type motors are analyzed, and the axial magnetic force of CR-PMSM is studied in detail. The 3-D finite-element method (FEM) is used to model and simulate the machine, and the magnetic-field distribution, axial magnetic force and driving performance are obtained. Also, the control rule of d-axis current is analyzed to achieve the adaptive equilibrium of axial force. A 2.0 kW, 6000 r/min prototype motor is fabricated and tested to validate the theory.

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Journal articles on the topic 'Permanent Magnet Synchronous Motor (PMSM) Current Control'

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