Method for inhibiting two-stage type orthogonal inverter input current low-frequency impulse

The invention relates to a method for inhibiting two-stage type orthogonal inverter input current low-frequency impulse. The method comprises the steps of introducing a resonance controller (4) via a voltage regulator (3) of a preceding stage direct-current converter (2), outputting reference command signals of the current regulator (5) via the resonance controller, outputting modulated signals by the current regulator, generating PWM high-frequency pulse signals compared with the carrier signals via a PWM signal generator (6), and finally generating power tube control signals of the preceding direct-current converter by a logic control and driving circuit (7), wherein the resonance controller (4) consists of an operational amplifier (OP), resistors (R1), (R2), (R3) and (R4), and capacitors (C1), (C2) and (C3). The method has the advantages of 1) effectively inhibiting two-stage type orthogonal inverter input current low-frequency impulse, 2) ensuring simple control loop and 3) effectively reducing influence on the service life of power supplies such as storage battery and fuel battery serving as the preceding stage input direct-current power supply.