Rectifying method and rectifying device of power supply rectifying circuit

The invention discloses a rectifying method and a rectifying device of a power supply rectifying circuit. Acquired three-phase voltage and acquired three-phase current are processed, thereby obtaininga first phase DC current component and a second phase DC current component. According to the first phase DC current component, the output end voltage of the power supply rectifying circuit and the output end current of the power supply rectifying circuit, reference current is obtained. Through changing the second phase DC current component to reactive current, the reactive current does not participate in output-side voltage adjustment, namely the reactive current is zero and furthermore reactive power in a power grid is eliminated. Through decomposing reference voltage and synthesizing one zero current vector and two related non-zero current vectors, influence of different reference current and single-mode voltage which are formed by different switch device combinations is prevented, andharmonic pollution in the