| 摘要 |
PROBLEM TO BE SOLVED: To increase a motor heat generation effect and to quickly increase refrigerant temperature and lubricant temperature inside a compressor by superposing a high frequency voltage which is higher than an operation frequency at compression operation time during rotational drive of a compressor motor.SOLUTION: An inverter control device for controlling a current value of a motor so that an output torque of a compressor motor becomes a required torque superposes a high frequency voltage which is higher than an operation frequency at compression operation time to a drive voltage of the motor required for compression operation of a compressor during a defrosting operation mode. |
