电动汽车电机控制器的电源完整性分析

Power Integrity Analysis for Electrical Vehicle Motor Controller

以电源完整性(PI)理论为指导提出了基于有限元仿真分析的新能源电动汽车电机控制器的硬件设计方法。分析了电源完整性的影响因素,采用SIwave软件对该系统控制板的PCB进行电源和地平面的谐振仿真分析,进而根据仿真结果优化该系统的PCB设计。实践表明该方法有效消除了谐振,降低了电源和地噪声,提高了系统的稳定性和可靠性,缩短了产品的开发周期。

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.