Control device and method for keeping high voltage of magnetron microwave generation source constant

The invention discloses a control device and method for keeping high voltage of a magnetron microwave generation source constant, and relates to the technical field of magnetron control, the control device comprises a power frequency rectification circuit, a high voltage power supply system, a filament power supply system and a magnetron; and outputting negative high voltage of the first direct-current voltage to the cathode of the magnetron and positive high voltage of the first direct-current voltage to the anode of the magnetron through a high-voltage power supply system. The filament power supply system adjusts second direct-current voltage transmitted to the cathode of the magnetron in time according to the high-voltage feedback signal and the filament control signal, the heating value of the cathode is controlled by controlling the second direct-current voltage, the number of electrons escaping from the cathode is further controlled, and the high voltage of the cathode and the high voltage of the anode