Torque control device and method of DC variable frequency compressor
A technology of torque control and DC frequency conversion, which is applied in the field of air-conditioning technology and frequency conversion control, which can solve the problems that the compressor cannot maintain torque balance and vibration at all times, and achieve the effects of improving low-frequency characteristics, reducing vibration, and improving service efficiency
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[0023] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings:
[0024] The system structure of the present invention is shown in Figure 3. The system includes a current sampling unit, a control unit, a DC power supply V, an intelligent frequency conversion module and a compressor. After the DC power supply V is frequency-converted by the intelligent frequency conversion module, it drives the operation of the compressor; the current sampling part samples the bus current of the intelligent frequency conversion module, and then sends the sampled current Idc to the control part for detection; the control part sends a control signal to the intelligent frequency conversion module , To control the driving voltage of the compressor. The control unit also includes a current detection unit and a position, torque calculation and frequency conversion control unit. The current detection unit detects the samplin...
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