Method, device, and system for regulating temperature of magnetron, variable-frequency power supply, and microwave apparatus

A controller, comprising:

• at least one processor;
• and
• a memory communicably connected to the at least one processor;
• wherein the memory stores instructions executable by the at least one processor, wherein the instructions, when being executed by the at least one processor, cause the at least one processor to perform:
• determining an anode current flowing through the magnetron and an output power of a variable-frequency power supply, the output power being configured to drive the magnetron to operate;
• calculating an anode voltage of the magnetron according to the anode current of the magnetron and the output power of the variable-frequency power supply;
• calculating an anode temperature of the magnetron according to the anode voltage of the magnetron;
• regulating the output power of the variable-frequency power supply according to the anode temperature of the magnetron.

A microwave apparatus, comprising:

• a magnetron;
• a variable-frequency power supply, comprising a variable-frequency circuit, wherein the variable-frequency circuit is configured to drive the magnetron;
• a current sampling circuit, connected to a first node between the variable-frequency circuit and the magnetron, and configured to sample an anode current flowing through the magnetron;
• and
• a controller, connected to the current sampling circuit and the variable-frequency power supply or the variable-frequency circuit respectively, wherein the controller comprises at least one processor;
• and
• a memory communicably connected to the at least one processor;
• wherein the memory stores instructions executable by the at least one processor, wherein the instructions, when being executed by the at least one processor, cause the at least one processor to perform:
• determining an anode current flowing through the magnetron and an output power of a variable-frequency power supply, the output power being configured to drive the magnetron to operate;
• calculating an anode voltage of the magnetron according to the anode current of the magnetron and the output power of the variable-frequency power supply;
• calculating an anode temperature of the magnetron according to the anode voltage of the magnetron;
• regulating the output power of the variable-frequency power supply according to the anode temperature of the magnetron.