scholarly journals Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

2022 ◽  
Vol 2022 ◽  
pp. 1-15
Author(s):  
Feng Cai ◽  
Ke Li ◽  
Xiaodong Sun
Keyword(s):  
High Efficiency ◽  
Detection Method ◽  
Sensorless Control ◽  
Regulation System ◽  
Speed Sensorless ◽  
Position Information ◽  
Injection Method ◽  
Rotor Position ◽  
Position Detection ◽  
Signal Injection

Electrically excited synchronous motor (EESM) is widely used in many large equipment drives because of its strong overload capacity, high efficiency, and adjustable power factor. The research and development of a high-performance EESM control system can realize the high combination of energy-saving speed regulation and green environmental protection and has a high social effect and economic value. In this paper, the signal injection method is used to obtain the initial rotor position information of EESM. Sliding Fourier transform is used to improve the initial position angle detection method based on the rotor signal injection method, and the improved method is compared with the traditional voltage integration method. Rotor high-frequency signal injection method was used to detect the rotor position information of the motor during operation, and the influence of the damping winding on the rotor signal injection method was analyzed. On the premise that the damping winding had no influence on the method, a method of obtaining the rotor position information of EESM without a speed sensor was designed. Finally, the speed sensorless regulation system using the initial rotor position detection method is simulated, which verifies the accuracy of the proposed speed sensorless control scheme.

Initial Rotor Position Detection Method of SPMSM Based on New High Frequency Voltage Injection Method

2019 ◽  
Vol 34 (4) ◽  
pp. 3553-3562 ◽  
Author(s):  
Bangcheng Han ◽  
Yangyang Shi ◽  
Xinda Song ◽  
Kun Hong ◽  
Kun Mao
Keyword(s):  
High Frequency ◽  
Detection Method ◽  
Injection Method ◽  
Rotor Position ◽  
Position Detection

scholarly journals Rotor Position Estimation Approaches for Sensorless Control of Permanent Magnet Traction Motor in Electric Vehicles: A Review

2021 ◽  
Vol 12 (1) ◽  
pp. 9
Author(s):  
Yong Li ◽  
Hao Wu ◽  
Xing Xu ◽  
Xiaodong Sun ◽  
Jindong Zhao
Keyword(s):  
Permanent Magnet ◽  
Sensorless Control ◽  
Position Estimation ◽  
Control Technology ◽  
Permanent Magnet Motor ◽  
Traction Motor ◽  
Position Information ◽  
Rotor Position ◽  
Control Techniques ◽  
Speed Range

Permanent magnet traction motor has the advantages of high efficiency, high power density, high torque density and quick dynamic response, which has been widely used in the traction field of electric vehicle. The high-performance control of permanent magnet traction motor depends on accurate rotor position information, which is usually obtained by using mechanical position sensors such as hall sensor, encoder and rotary transformer. However, the traditional mechanical sensor has the disadvantages of high cost, large volume and poor anti-interference ability, which limits the application of permanent magnet motor. The sensorless control technology is an effective way to solve the above-mentioned problem. Firstly, the sensorless control techniques of permanent magnet motor are classified. The sensorless control techniques of permanent magnet motor for rotor initial position, zero-low speed range, medium-high speed range and full speed range are deeply described and compared. Finally, the development trend of sensorless control technology of permanent magnet traction motor is prospected.

Research of DC Panel Battery Fault Detection Method

2014 ◽  
Vol 635-637 ◽  
pp. 722-725
Author(s):  
Mao Fa Gong ◽  
Hui Ting Ge ◽  
Zheng Gong ◽  
Yu Qing Lin ◽  
Bing Qian Liu ◽  
...  
Keyword(s):  
Fault Detection ◽  
Detection Method ◽  
Internal Resistance ◽  
Resistance Measurement ◽  
Optimal Measurement ◽  
Injection Method ◽  
Measurement Scheme ◽  
Dc Discharge ◽  
Signal Injection ◽  
Discharge Method

This paper elaborates the DC screen and battery DC screen fault detection method. The method of measuring battery’s internal resistance and voltage is analyzed and studied in this paper, and the two methods are optimized. Besides, the structure of the battery internal resistance, internal resistance equivalent principle and other aspects are also introduced in this paper. The optimal measurement scheme can be chosen by comparing the internal resistance measurement of DC discharge method and the AC signal injection method.

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