Voltage control method and apparatus, household device, computer storage medium, and computer program

A voltage control method comprising:

• obtaining two half-bus voltages at a direct current side of a three-level converter, overvoltage protection values of the two half-bus voltages, and a load voltage required by a load, one of the two half-bus voltages being configured to supply voltage to the load;
• determining a voltage control strategy based on a relationship among the two half-bus voltages, the overvoltage protection values, and the load voltage, the voltage control strategy being configured to compensate for an output duty ratio of a switch of the three-level converter, such that the one of the two half-bus voltages is greater than or equal to the load voltage and each of the two half-bus voltages is smaller than or equal to a corresponding one of the overvoltage protection values;
• and
• performing voltage control on the two half-bus voltages based on the voltage control strategy.

A voltage control apparatus comprising:

• a memory storing a computer program;
• and
• a processor configured to execute the program to:
• obtain two half-bus voltages at a direct current side of a three-level converter, overvoltage protection values of the two half-bus voltages, and a load voltage required by a load, one of the two half-bus voltages being configured to supply voltage to the load;
• determine a voltage control strategy based on a relationship among the two half-bus voltages, the overvoltage protection values, and the load voltage, the voltage control strategy being configured to compensate for an output duty ratio of a switch of the three-level converter, such that the one of the two half-bus voltages is greater than or equal to the load voltage and each of the two half-bus voltages is smaller than or equal to a corresponding one of the overvoltage protection values;
• and
• perform voltage control on the two half-bus voltages based on the voltage control strategy.

A non-transitory computer storage medium storing at least one program that, when executed by at least one processor, causes the at least one processor to:

• obtain two half-bus voltages at a direct current side of a three-level converter, overvoltage protection values of the two half-bus voltages, and a load voltage required by a load, one of the two half-bus voltages being configured to supply voltage to the load;
• determine a voltage control strategy based on a relationship among the two half-bus voltages, the overvoltage protection values, and the load voltage, the voltage control strategy being configured to compensate for an output duty ratio of a switch of the three-level converter, such that the one of the two half-bus voltages is greater than or equal to the load voltage and each of the two half-bus voltages is smaller than or equal to a corresponding one of the overvoltage protection values;
• and
• perform voltage control on the two half-bus voltages based on the voltage control strategy.