Synchronous Control Method for Weil Synthetic Circuit

In this paper, a kind of current zero-cross point prediction method based on recursion algorithm is proposed for Weil synthetic test circuit which is used for the test on high capacity switch electric appliance. And the error source and error elimination methods are analyzed. In order to verify the accuracy of the method, a measurement and control system based on DSP and used for the synthetic test circuit is developed. The actual test results show that the proposed method, as well as the developed hardware and software are feasible and valuable for application.