Design of High Voltage Power Supply for X-ray Machine Based on Voltage and Frequency Regulation

In this paper, a new control structure is introduced on the basis of the design of the existing common X- ray high frequency and high voltage power supply. The common high voltage generator can control the output voltage by adjusting the duty cycle of the chopper circuit. This method has some shortcomings such as narrow adjustment range and slow response speed. The new control scheme realizes the output voltage control through the combination of voltage regulation and frequency modulation. The combination of these two voltage regulation modes not only increases the controllable range of output voltage, but also improves the stability of the power supply system. Through simulation, it is verified that the high voltage power supply designed in this paper meets the requirements.