Voltage stabilization method for tin-plated soft-smelting high-power medium-frequency heating power supply

The present invention relates to a tin reflow heating medium frequency power supply regulator in the power supply method of technical field asymmetric configuration by single-phase voltage three-phase voltage, and then using a method based on the detection signal Instantaneous Reactive Power Theory calculated in real time the RMS single-phase voltage, using the effective value of feedback control by a PWM pulse generator, triggered tin reflow frequency heating power supply. This method eliminates the grid voltage disturbances, the power supply output, which enhances the dynamic response of the speed voltage feedback control, improved stability and accuracy of the voltage control, and ultimately improve the reflow tin-plated tin plate quality.