A New Initial Rotor Position Detection Technology Based on HF Injection and Software PLL

2006 ◽  
Author(s):  
Shujin Chen ◽  
Baozhu Ma ◽  
Zhengyun Ran ◽  
Fei Guo ◽  
Huade Li
Keyword(s):  
Rotor Position ◽  
Position Detection ◽  
Detection Technology

Comparative Analysis of Rotor Position Detection Technology in the SFC Soft Starting of Pump Storage Motor

2013 ◽  
Vol 387 ◽  
pp. 262-266
Author(s):  
Lian Tao Ji ◽  
De Shun Wang ◽  
Bo Yang ◽  
Guan Jun Li
Keyword(s):  
Frequency Converter ◽  
Control Device ◽  
Detection Methods ◽  
Storage Unit ◽  
Flux Observer ◽  
Rotor Position ◽  
Stator Windings ◽  
Position Detection ◽  
Detection Technology ◽  
Terminal Voltage

Static Frequency Converter (SFC) is the key control device of reversible pump storage unit. By inputting a variable frequent current to the corresponding stator windings, the SFC can steadily start the synchronous motor. In this process, rotor position detecting accuracy comes to be the key point, but at the ultra-low speed period, the motors terminal voltage is too low to accurate sampling and is also vulnerable to the interference, which brings risks to the variable frequency starting. In this paper, two initial rotor position detection methods are compared, one is based on the voltage vector, and the other is based on adapt flux observer. At last, a 300MW/15.75kV pump storage unit with a 6 pulses SFC are built on the RTDS platform to exam the control strategy.

Research on Rotor Position Detection Technology for High Speed PMSM

2010 ◽  
Vol 108-111 ◽  
pp. 1187-1192
Author(s):  
Hong Cui ◽  
Feng Xiang Wang ◽  
Zhong Hua Liang
Keyword(s):  
High Speed ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Experimental Result ◽  
Position Information ◽  
Loop Control ◽  
Rotor Position ◽  
Position Detection ◽  
Detection Technology

The method of rotor position detection and its signal processing circuit for high speed permanent magnet synchronous motor (PMSM) are proposed in this paper. The optoelectronic position sensor and appropriate processing way are adopted to obtain position information accurately and rapidly. The experimental result shows that the method can accurately detect the rotor position for a PMSM with rated speed of 60000 r/min. The method is also applied on high speed PMSM direct torque control (DTC) system by simulation in this research. It is shown that the proposed method can be used for high speed PMSM which has provided theoretical basis for closed-loop control.

Novel Strategy for BLDC Motor Rotor Position Detection

2015 ◽  
Vol 772 ◽  
pp. 365-372
Author(s):  
Ling Zhi Cao ◽  
Sheng Hao Yang
Keyword(s):  
Motor Speed ◽  
Zero Crossing ◽  
Low Speed ◽  
Rotor Position ◽  
Voltage Difference ◽  
Position Detection ◽  
Position Signal ◽  
Speed Range ◽  
Terminal Voltage ◽  
Wide Speed Range

The detection of rotor position plays an important role in the motor speed-adjustment system. By analyzing the back-EMF method and its improved methods, we know the amplitude of back-EMF is too small to be detected when the motor run at low speed. A new detection method of rotor position has been proposed in this paper. It detects the zero crossing point of line terminal voltage difference to acquire the rotor position signal after a 90 degrees mechanical angle delay. The amplitude of line terminal voltage difference is large in wide speed range, so the rotor position signal can be accurately acquired in most situations. Simulation results proved that the new method can obtain the rotor position signal exactly in both high and low speed. It meets the wide speed range of motor.

Effect of Stator and Rotor Saturation on Sensorless Rotor Position Detection

2013 ◽  
Vol 49 (3) ◽  
pp. 1333-1342 ◽  
Author(s):  
Nicola Bianchi ◽  
Emanuele Fornasiero ◽  
Silverio Bolognani
Keyword(s):  
Rotor Position ◽  
Position Detection
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