Mathematical Modelling of the Detailed High Frequency Current Trajectory in an IPMSM Using PWM Carrier Synchronized Signal Voltage Injection Method

抄録

The paper presents the discrete-time mathematical model for the multirate-sampled current response in an IPMSM using the PWM carrier-synchronized signal voltage injection method. Conventionally, AD conversion is performed at the carrier peak. However, this study found that the multirate-sampled high-frequency current trajectory exhibits an inclined elliptical on the gamma-delta coordinate system. Therefore, this paper validates the mathematical model ant the physical properties of the multirate-sampled current by numerical simulation.