Power module current sharing control method and device and power supply equipment

Abstract

This invention discloses a current sharing control method, system, and power supply device for a power module. The method includes: acquiring the total current parameters of the power module and the branch current parameters of the voltage conversion branches; determining a first proportional adjustment parameter for the total current loop and a second proportional adjustment parameter for the branch current loop based on the total current parameters and the branch current parameters; determining the switching control parameters of any voltage conversion branch based on the first and second proportional adjustment parameters, wherein the sum of the fluctuations of the switching control parameters is equal to zero; and adjusting the branch current of the voltage conversion branch according to the switching control parameters. This invention achieves bidirectional current regulation by setting up a total current loop and branch current loops, thereby decoupling multiple parallel voltage conversion branches, improving the fault tolerance performance of current sharing control and the dynamic response speed of the system, and enhancing the current sharing effect.

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