Design and Verification of Position Estimation Using Pseudo-Voltage Feedback for Switched Reluctance Motor

• Main Authors: Hung,Tzung-Han, 洪綜韓
• Other Authors: Hu,Jwu-Sheng
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/93941251563080759732

碩士 === 國立交通大學 === 電控工程研究所 === 105 === The rotor position plays an important role in control system of Switched Reluctance Motor (SRM). It usually employs position sensors to measure rotor position, but the sensors are expensive and hard to maintain. In view of this, the thesis uses Flux-linkage/Current Estimation Method to get rotor position of SRM, and utilizes Pseudo-Voltage Feedback technique to replace the circuit of voltage sensor. This idea decrease the cost of circuit design. Moreover, this thesis proposes a method using active phase with out-going phase to estimate position. This method effectively reduces the error when Flux-linkage/Current Estimation Method only uses active phase to estimate position in low current condition. The proposed method in this thesis has implemented in a drive circuit with 32-bit low cost micro controller. It will estimate On-line and Real-time rotor position when the SRM is running, and the estimation result will compare with the position measured from Encoder in this system for verificating the accuracy and feasibility of the proposed method.