Using the current signal to diagnose inverter faults information is apt to be affected by the load,noise and other factors;besides,it requires long diagnosis period with special algorithms and the diagnosis result is easily to be incorrect with noload or light-load.Focusing on this issue,the logical analysis method is proposed for correlation logical analysis of leg neutralpoint voltage and pulse signal to realize the diagnosis of the open circuit faults of inverter switches.The logical expressions of outpu...