Patent ID: 6870347
Filing Date: 2005-03-22
Classification: H02P,Y10S

Abstract:
1. A permanent magnet synchronous motor driving system, comprising: 1) a permanent magnet synchronous motor including three phase terminals, a resonant frequency being generated between an inductance and a ground electrostatic capacitance between the following: 2) an inverter for driving the permanent magnet synchronous motor, the inverter generating a carrier frequency, wherein the inductance and the ground electrostatic capacitance are predetermined constants, the inductance and the ground electrostatic capacitance being predetermined by a calculation based on a specification of the permanent magnet synchronous motor designed in such a manner that the resonant frequency of the permanent magnet synchronous motor is free from a conformance with the carrier frequency of the inverter and is free from a proximity of the carrier frequency of the inverter.