Principle and Experimental Study of Permanent Magnet Motor Drive Circuit

Research Area: Volume 12, Issue 3, May 2023 Year: 2023
Type of Publication: Article Keywords: Permanent Magnet Motor, Driving Circuit, Principle Analysis, Modular Analysis Design,Three-Resistance Sampling Method
  • Fuqian Zhou
  • Hongbin Yin
  • Peng Zhang
  • Congzhen Liu
  • Wenjing Hu
Journal: IJEIR Volume: 12
Number: 3 Pages: 35-45
Month: May
ISSN: 2277-5668
In the design process of permanent magnet motor hardware control system, there are some problems such as complicated drive circuit analysis and design and high time cost. In traditional three-phase current sampling, the process is complicated and the algorithm is difficult to implement. In this paper, the PS21A7A power chip as the core, based on the modular analysis design and test method, analysis of the permanent magnet motor drive circuit of the power supply circuit, power chip supply circuit, sampling circuit working principle and characteristics, reduce the complexity of circuit analysis and design. The three-resistance current sampling method is used to sample the phase current of the permanent magnet motor, which reduces the complexity of the control algorithm and improves the control precision of the system. The hardware circuit of the driving circuit is designed, and the driving control test of permanent magnet motor is carried out in combination with the Micro Lab Box main control unit.

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