Fig.1. PMSM experimental platform

The PMSM experimental platform is shown in Fig.1.The platform is implemented in a TI TMS320F28335 DSP board. As can be seen from this picture, a three-phase uncontrolled rectifier is used for providing the DC power, where the three-phase PWM converter conducts alternative current for the PMSM drive. Permanent magnet synchronous motor speed and rotor position information are collected by rotating transformer in real time. The sampling frequency of the control platform is 10 kHz. In addition to the stator phase current measured by the current probe, the other signals are output by the digital mode conversion module on the control board and can be displayed on the oscilloscope. The Labview of the computer is installed with the control board for can communication, which can control the motor in real time.

This permanent magnet synchronous motor drive platform is very perfect. It can not only carry out practical engineering tests such as motor performance and parameter identification, but also carry out research on innovative motor control algorithm. Based on this platform, 20 papers of permanent magnet synchronous motor control are published, and relevant researches are in continuous progress.