Control system and control method thereof

Abstract

The present disclosure provides a control system and a control method of the control system. The converter is configured to provide an output voltage to a load and has a low-load gain curve, a high-load gain curve, a preset low-load operating frequency and a preset high-load operating frequency according to characteristics of the converter. The detection module is configured to sample the output voltage of the converter and an electrical signal. The electrical signal is a sampled signal reflecting an actual load value of the load. The control module is configured to adjust the output voltage of the converter according to the electrical signal and a gain variation coefficient and output a control signal to adjust an operating frequency of the converter. A difference between a full-load operating frequency and a no-load operating frequency of the converter is less than a first preset frequency difference. The gain variation coefficient is determined according to the low-load gain curve, the high-load gain curve, the preset low-load operating frequency and the preset high-load operating frequency.

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