Power compensation control method and apparatus for high-power multi-functional efficient charging system

A power compensation control apparatus for a high-power multi-functional efficient charging system, wherein a topology structure of the charging system is constituted by at least two parallel high frequency link matrix converters, and the power compensation control apparatus comprises:

• a phase difference calculation module configured to calculate, under a dq two-phase synchronous rotating coordinate system, a difference between an input voltage phase of an ith converter and an ideal reference input current phase, where i is an odd number;
• a vector rotating module configured to calculate, according to the above phase difference, a required rotating phase angle of a space current vector of an (i+1)th converter, wherein by the required rotating phase angle, total instantaneous reactive power at input sides of the ith converter and the (i+1)th converter is zero;
• a sector judgment module configured to correspondingly rotate the space current vector of the (i+1)th converter, and judge a sector to which the rotated space current vector belongs;
• and
• a pulse modulation module configured to generate a corresponding control pulse signal based on the corresponding sector and modulation ratio, so as to act on the (i+1)th converter to realize power compensation.