Current sharing method of centralized control type interleaved parallel circuit, computer readable storage medium and centralized control type interleaved parallel circuit

Abstract

The invention relates to a current sharing method of a centralized control type interleaving parallel circuit, which comprises the following steps of: setting the duty ratio of a first parallel circuit in the interleaving parallel circuit as a first duty ratio, and setting the duty ratio of a second parallel circuit in the interleaving parallel circuit as a second duty ratio; based on the first duty ratio; and the ratio of the voltage difference value of the input voltage sampled at the zero crossing point of the triangular carrier wave of the first parallel circuit and the input voltage sampled at the periodic value to the bus voltage value of the interleaved parallel circuit is set as a second duty ratio compensation amount which ensures that the currents of the two parallel circuits are equal when one switching period is ended. The invention further relates to a computer readable storage medium and a centralized control type interleaving parallel circuit. According to the invention, the problem of non-uniform current between circuits can be solved in a low-cost and easy-to-implement manner, and the sine degree of the second parallel circuit is improved.

Description

technical field [0001] The present invention relates to the field of interleaved parallel circuits, and more particularly, to a current sharing method of a centrally controlled interleaved parallel circuit, a computer-readable storage medium and a centrally controlled interleaved parallel circuit. Background technique [0002] Compared with the low-power circuit, the EMI circuit and energy storage filtering parameters of the high-power circuit are correspondingly increased, and the requirements for the current stress of the switching tube are relatively large. In order to realize the miniaturization and light weight of the product, the staggered parallel technology is introduced. The staggered parallel connection can reduce the inductor current ripple and the switch tube current stress, and can reduce the circuit parameters and improve the power density. Interleaved parallel control can be achieved by centralized or decentralized control methods. Distributed can improve th...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a current sharing method for a centralized control interleaved parallel circuit, a computer-readable storage medium and a centralized control interleaved parallel circuit for the above-mentioned defects of the prior art, which can be achieved at low cost and easily The way to achieve it is to solve the problem of uneven current between circuits

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