一种电机的电流检测装置及其控制方法和机房空调
By setting sampling circuits with different amplification factors in the current detection circuit, and selecting an appropriate amplification factor according to the current range, the problem of current detection range and accuracy in computer room air conditioning is solved, flexible adjustment and error reduction are achieved, and the reliability of current detection and motor control are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2023-12-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing current detection methods for computer room air conditioners have limitations, such as insufficient detection range or inadequate detection accuracy at low current levels, resulting in significant detection errors.
In the current detection circuit, at least two sampling circuits with different amplification factors are set up. The sampling circuit with the corresponding amplification factor is selected according to the current range to which the motor current value belongs. By using the sampling values of at least two sampling circuits as a reference, it is determined whether the current detection circuit is abnormal, and the motor is controlled to stop when an abnormality occurs.
It enables flexible adjustment of the detection range and accuracy, reduces detection errors, improves the reliability of the current detection circuit, and enhances the reliability of the computer room air conditioner's motor control.
Smart Images
Figure CN117741221B_ABST