Methods of controlling bipolar high-voltage generators and x-ray systems

A method of controlling a bipolar high-voltage generator, the bipolar high-voltage generator including an inverter circuit, a first transformer, and a second transformer, the bipolar high-voltage generator being connected to a load, the bipolar high-voltage generator supplying a cathode voltage and an anode voltage to the load, the first transformer being provided in an output circuit of the anode voltage, and the second transformer being provided in an output circuit of the cathode voltage, the inverter circuit being coupled to an input of the first transformer and an input of the second transformer, the method comprising:

• obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range;
• and
• adjusting, via the inverter circuit, a working frequency of at least one of the first transformer and the second transformer based on the target voltage difference;
• wherein the target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.