Self-adapting method of parameters in running process of direct current frequency conversion compressor
A technology of DC frequency conversion in the operation process, applied in the field of compressors, can solve problems such as the inability to self-adaptively adjust compressor motor parameters, and achieve the effect of avoiding low efficiency
Active Publication Date: 2015-07-08
四川长虹空调有限公司 +1
View PDF5 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that the prior art cannot realize the self-adaptive adjustment of the motor parameters of the compressor during the operation of the DC inverter compressor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0029] The specific implementation process of the method for parameter self-adaptation during the running process of the DC inverter compressor of the present invention will be further described in detail below.
[0030] Before the DC variable frequency compressor starts to run, firstly preset the electromagnetic quantity and magnetic flux of the motor. After the compressor is running, its real-time inductance and magnetic flux will change as the running time progresses. During the operation of the compressor, the U-phase current and the W-phase current of the compressor motor are detected in real time, and the current detection can be realized by using a current sensor or a shunt resistor. After calculating the U-phase current and W-phase current of the compressor motor, calculate the V-phase current of the motor according to the U-phase current and W-phase current, and the V-phase current of the motor is equal to the sum of the U-phase current and the W-phase current negati...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a compressor, and aims at solving the problem that in the prior art, self-adapting adjustment on the motor parameters of the compressor in the running process of the direct current frequency conversion compressor cannot be achieved. The self-adapting method of the parameters in the running process of the direct current frequency conversion compressor includes the following specific steps: firstly, in the running process of the compressor, the U-phase current and the W-phase current of a motor of the compressor are detected in real time, and the V-phase current of the motor is calculated according to the U-phase current and the W-phase current; secondly, coordinate conversion is carried out on the U-phase current, the W-phase current and the V-phase current, and the DQ axis current is obtained; finally, the DQ axis inductance value under the current at present is calculated according to the parameters of the compressor and the DQ axis current, and preset inductance values of the parameters are corrected through the inductance value obtained through calculation. The self-adapting method is suitable for the direct current frequency conversion compressor.
Description
technical field [0001] The invention relates to a compressor, in particular to a method for self-adapting parameters of a DC frequency conversion compressor using a permanent magnet synchronous motor. Background technique [0002] DC inverter compressors have been widely used in the field of air conditioning. The DC frequency conversion compressor is driven by a DC motor. The specific driving method is: firstly convert the power frequency commercial power into a DC power supply and send it to the power module. Power supply, this DC power is sent to the DC motor of the compressor to control the displacement of the compressor. [0003] Because the compressor uses a DC motor, and by providing different driving voltages to the retention motor to obtain a suitable compressor working displacement. Compared with fixed-frequency compressors, DC variable-frequency compressors can make the motor run at a higher speed when the current temperature is greatly different from the require...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14
Inventor 李越峰高向军赵静邓平林志强何雄军
Owner 四川长虹空调有限公司