Switching tube fault-tolerant control circuit and method of two-phase staggered magnetic bearing power amplifier

The switching tube fault-tolerant control circuit of the two-phase staggered magnetic bearing power amplifier comprises a plurality of electronic switches which are correspondingly connected with switching tubes of the two-phase staggered magnetic bearing power amplifier in series; the acquisition module is used for acquiring real-time current of a part of switching tubes in the two-phase staggered magnetic bearing power amplifier in real time; and the comparison and judgment module is used for calculating an error value between the real-time current and the given current and cutting off part of the electronic switches when the error value reaches a preset safety threshold value. The invention provides a switch tube fault-tolerant control circuit and method of a two-phase staggered magnetic bearing power amplifier, which can quickly disconnect the part where a short-circuited switch tube is located when the switch tube is short-circuited, and the redundant part continues to keep the normal operation of the po