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US 12,649,354 B2Granted
Electric compressor and control method thereof
AssigneeHanon Systems
InventorsChi Myeong Moon, Sung Joon Lee, Young Min Kim, Hong Min Kim, Gu Hyun Ryu, Soo Cheol Jeong, Joo Young Lee, Jae Min Lee
Life of this patent
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Abstract
An electric compressor of an air conditioning system and a control method thereof. In one method, a stable operation of the electric compressor is ensured by means of logic to protect an inverter unit provided in the electric compressor before an inverter element is damaged due to overheating, so that safety can be secured.
Claims18
A control method of an electric compressor, the control method comprising:
- a step of determining a current discharge pressure state of the electric compressor responsive to an air conditioner provided in a vehicle becoming in an on-state;
- a second step of determining current revolutions per minute information of the electric compressor, temperature information of an inverter unit, and phase current information responsive to the current discharge pressure corresponding to an overload pressure;
- a third step in which a state where a temperature error signal becomes activated responsive to the inverter unit becoming overheated;
- and
- a fourth step of determining whether the electric compressor is operated or not according to the current discharge pressure after the temperature error signal is activated.
2 more elements
A control method of an electric compressor, the control method comprising:
- a step of determining a current discharge pressure state of the electric compressor responsive to an air conditioner provided in a vehicle becoming in an on-state;
- a second step of determining current revolutions per minute information of the electric compressor, temperature information of an inverter unit, phase current information, and cumulative time information and a temperature rise rate of the inverter unit responsive to the current discharge pressure corresponding to an overload pressure;
- a third step in which a state where a temperature error signal is activated responsive to the inverter unit becoming overheated;
- and
- a fourth step of determining whether the electric compressor is operated or not according to the current discharge pressure after the temperature error signal is activated.
2 more elements
Dependencies are inferred from the claim text.