A Initial Position Sensorless for Switched Reluctance Motor Based on the Improved Pulse Injection
Lei Zhang 1,2 and Zhi Xin1
1. College of New Energy, Nanjing College of Information Technology, Nanjing, China
2. College of Electronic Engineering, Nanjing Xiao Zhuang University, Nanjing, China
2. College of Electronic Engineering, Nanjing Xiao Zhuang University, Nanjing, China
Abstract—The algorithm of the initial rotor position estimation based on improved pulse injection method is presented for switched reluctance motor (SRM) in this paper . To implement this method, First, the division of the inductance profiles into region, the pulses are injected to the phase winding , the pulse current amplitude is set to the constant , by comparing the phase current rise time for the initial starting phase estimation . Second, based on the inductance subregional , the linear mathematical model of the phase current rise time is established for calculating the initial position angle .This method can realize the initial position estimate of SRM under standstill and inertia status ,it is quite easy to implement, the proposed method not only reduces the initial position estimation error due to improve the reliability of motor starting, and realize motor running of no inversion. The simulation and experimental results verify the correctness and feasibility of the proposed algorithm.
Index Terms — switched reluctance motor; initial position estimation; phase current rise time; pulse injection
Cite: Lei Zhang and Zhi Xin, "A Initial Position Sensorless for Switched Reluctance Motor Based on the Improved Pulse Injection," Jounal of Automation and Control Engineering, Vol. 5, No. 2, pp. 45-52, December, 2017. doi: 10.18178/joace.5.2.45-52
Index Terms — switched reluctance motor; initial position estimation; phase current rise time; pulse injection
Cite: Lei Zhang and Zhi Xin, "A Initial Position Sensorless for Switched Reluctance Motor Based on the Improved Pulse Injection," Jounal of Automation and Control Engineering, Vol. 5, No. 2, pp. 45-52, December, 2017. doi: 10.18178/joace.5.2.45-52