Implementation of Sensorless of Drive Sureface-Mounted Permanent-Magnet Motor by High-Frequency Signal Injection

• Main Authors: Jhih-sian Jhang, 章志賢
• Other Authors: Kuo-Kai Shyu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/02468635429638965569

碩士 === 國立中央大學 === 電機工程研究所 === 99 === The objectiveof this thesis is the implementation of sensorless of driverSureface-Mounted Permanent-Magnet Synchronous Motor(SMPMSM) based on thehigh-frequency signal injection. In SMPMSMS, dueto the flux of the permanent magnet, the stator core around theq-axis winding is saturated. This makes the magnetic saliency inthe motor.This magnetic saliency has the information about therotor position. The high-frequency voltage signal is injected intothe motor in order to detect the magnetic saliency and estimatethe rotor position.Traditional six-voltage-vector is difficult to produce a sinusoidal voltage to PMSM. This thesis usesSpace Vector Pulse Width Modulation (SVPWM) to overcome the problem.Finally,experimental and simulation results confirmed the feasibility of the sensorless controller. This thesis used a full-digital drive based on intelligent power module and digital signal processor.This drive not only efficiently simplifies the circuit, but also reduces the cost of the system.