Unity power factor control of permanent magnet synchronous motor by using open winding configuration

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1295-1303
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Power Factor ◽  
Reactive Power ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Unity Power Factor ◽  
Collaborative Simulation ◽  
Terminal Voltage ◽  
Vector Modulation ◽  
Power Factor Control

This paper presents the performance of open-winding permanent magnet synchronous motor (OW-PMSM). It mainly includes vector modulation technology considering the unity power factor control.And a topology structure is proposed to optimize the fault tolerance of inverter. Matlab software and Maxwell software collaborative simulation are supplied to obtain the reactive power, speed, terminal voltage, electromagnetic torque etc. under normal and fault status. Finally, the simulation results of an open-winding permanent magnet synchronous motor are verified by the experimental results.

Research of Sensorless Drive of Permanent Magnet Synchronous Motor Based on Power Factor Control

2013 ◽  
Vol 655-657 ◽  
pp. 1169-1174
Author(s):  
Bing Han ◽  
Jian Ying Xu ◽  
Shan Qiao
Keyword(s):  
Vector Control ◽  
Permanent Magnet ◽  
Power Factor ◽  
Control Method ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Voltage Reference ◽  
Stator Current ◽  
Sensorless Vector Control ◽  
Power Factor Control

For the traditional sensorless vector control systems of permanent magnet synchronous motor, a new sensorless vector control method is proposed based on the power factor control. On the basis of analysis of the mathematical models for the permanent magnet synchronous motor, established a power factor voltage reference frame system. The rotor position and speed is estimated by the control of power factor angle, and then from the point of view of efficiency drive to configure the stator current. This stator current is arranged in the vicinity of the current minimum trajectory. This method not only can control the speed, but also ensure high power factor and high drive efficiency of the permanent magnet synchronous motor. The simulation results proved the effectiveness and feasibility of this control method.

Examination and implementation for direct torque controlled permanent magnet synchronous motor with space vector modulation

2018 ◽  
Vol 233 (2) ◽  
pp. 153-163 ◽  
Author(s):  
Bowen Ning ◽  
Shanmei Cheng ◽  
Baokang Yan ◽  
Fengxing Zhou
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Synchronous Motor ◽  
Torque Control ◽  
Space Vector Modulation ◽  
Control Loop ◽  
Space Vector ◽  
Torque Control Strategy ◽  
Vector Modulation

This study investigates the direct torque control strategy of permanent magnet synchronous motor with the space vector modulation, on account of large torque fluctuation and varied switching frequency of classic direct torque control strategy. The relationship among the terminal control voltages and the torque and stator flux of the permanent magnet synchronous motor is derived through the dynamic model of motor. Accordingly, the torque and the flux closed-loop feedback control structure are established, where the error signals are regulated by the proportional and integral controllers to generate output voltages. Furthermore, the parameters of the controllers are designed through explicitly analyzing the frequency domain models of the torque control loop and the flux control loop. The accurate calculation formula of control parameters, which has both explicit setting target and definite physical meaning, is obtained. Therefore, the design of torque and flux controller parameters becomes easy in the direct torque control with space vector modulation technology, and satisfactory flux and torque control can be acquired. Finally, simulation and experimental tests are demonstrated in support of the validity of the investigated scheme and the feasibility of the proposed controller parameter design.

scholarly journals A Novel Modified DTC-SVM Method with Better Overload-capability for Permanent Magnet Synchronous Motor Servo Drives

2017 ◽  
Vol 61 (3) ◽  
pp. 253 ◽  
Author(s):  
Tibor Vajsz ◽  
László Számel ◽  
György Rácz
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Synchronous Motor ◽  
Motor Drives ◽  
Point Of View ◽  
Torque Control ◽  
Servo Drives ◽  
Vector Modulation

Direct torque control with space vector modulation (DTC-SVM) is one of the most promising alternatives of field-oriented control in the case of permanent magnet synchronous motor drives. This method controls the electromagnetic torque of the motor with excellent dynamics which makes it an attractive choice in the case of servo drives. In this article DTC-SVM is investigated with Matlab-Simulink simulation and it is proven that DTC-SVM has severe instability-issues during overloading and its overload-capabilities are heavily dependent on the speed. Therefore, a novel modified DTC-SVM method is proposed which is stable during overloading and its overload-capabilities are practically independent of the speed. Also, the overload-capability of the new method is superior to that of classical DTC-SVM, while the two methods are practically identical from the point of view of the torque-control dynamics and the torque-ripple generated.

Unity Power Factor Control of a Direct-Driven Permanent Magnet Synchronous Wind-Power Generator Based on Three-Level Converter

2011 ◽  
Vol 347-353 ◽  
pp. 2227-2230 ◽  
Author(s):  
Shu Xi Liu ◽  
Shan Li ◽  
Juan He
Keyword(s):  
Permanent Magnet ◽  
Power Factor ◽  
Synchronous Generator ◽  
Level System ◽  
Unity Power Factor ◽  
Power Generator ◽  
Energy Capture ◽  
Wind Power Generator ◽  
Level Converter ◽  
Power Factor Control

Direct-driven permanent magnet synchronous generator (PMSG) has become an important research subject besides the double-fed induction generator. With the increasing of unit capacity, the study of topology of high power converters based on multi-level converter is attracting more and more attention. The study of vector control of the direct-driven permanent magnet synchronous wind turbines based on three-level converter is carried out in this paper. Based on the maximum wind-energy capture control of the PMSG, the unity power factor operation of PMSG is realized by controlling the d-axis current to zero in the generator-side converter. A detailed comparative study of two-level system and three-level system is conducted. The simulation results verify the validity of this algorithm.

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