关键词: 电源完整性, 新能源汽车, SIwave, 谐振

Abstract: An electrical vehicle motor controller was designed based on fem simulative analysis according to the power integrity (PI) theory. In order to pass the EMC testing and improve the reliability of the controller, the SIwave tool was used to simulate the power and ground plane’s resonance of the control board. Finally, the PCB design was improved and completed according to the simulation result. The practice shows that this methodology can not only effectively restrain PCB’s resonance, but also reduce the noise of power and ground plane. Thus it significantly improves stability of the system and shortens development cycles.

Key words: power integrity, electrical vehicle, SIwave, resonance