IPM死区保护与功率驱动保护冲突的一种解决技术

Technology to Solve The conflict of IPM Dead Zone Protection and Power Drive Protection

简单分析了交流变频调速中IPM死区保护和DSP功率驱动保护的原理与作用,详细阐明了两者之间在具体实现时所产生的冲突问题。并且针对这一问题,本文提出了一种解决技术,该技术采用与非门组合电路,简单实现了保护信号的冲突问题。所设计的电路可同时满足IPM正常工作、死区保护、DSP功率驱动保护的需要。仿真结果,最终验证了该方案的可行性。

This article briefly analyzed the principle of IPM dead zone protection and DSP power drive protection for AC frequency control system. Then this article illustrated the conflict between the two protection during implementation. To solve this problem, a solution technique was proposed in this article. The technology uses a combination of NAND gate circuit. It can simply solve the conflict of protection waveforms during the two protection. The design of this circuit can also meet the needs of IPM working, dead zone protection, DSP power drive protection. The experimental results validated the feasibility of the solution.