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A frequency conversion compressor, compressor technology, applied in torque pulsation control, starting device, climate sustainability, etc., can solve the problem of the permanent magnet synchronous motor operating environment and working conditions are bad, the starting performance of the frequency conversion compressor affects refrigerators Energy consumption matching test, noise matching test, etc., to achieve the effect of improving startup performance, wide startup performance, and high reliability
Pending Publication Date: 2022-06-07
CHANGHONG HUAYI COMPRESSOR CO LTD
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However, in the actual refrigerator matching process, due to the harsh operating environment and working conditions of the permanent magnet synchronous motor, the start-up performance of the inverter compressor directly affects the refrigerator energy consumption matching test and noise matching test
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[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0021] like figure 1 As shown in the figure, the start-up control method of the inverter compressor includes:
[0022] Step 1. Determine whether the compressor control system sends a start command to the inverter compressor, if so, go to step 2, if not, continue to step 1;
[0023] Step 2. Under the rated load condition, the inverter compressor driver starts the compressor clockwise with the preset first starting current I1, and the starting time is the preset first starting time T1. When the starting time counter reaches the set first starting time After the startup time T1, the input of the first startup curren...
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Abstract
The invention relates to the technical field of inverter compressor control, and provides an inverter compressor starting control method in order to improve the starting performance of an inverter compressor, which comprises the following steps: 1, judging whether a starting instruction exists, and if so, entering 2; 2, the driver clockwise starts the compressor with the first starting current, and the starting time is T1; 3, calculating a mechanical angle omega of the motor rotor rotating in the T1; 4, judging whether omega is greater than a first angle threshold, if so, entering 5, and if not, entering 6; 5, the driver clockwise starts the compressor with the second starting current; 6, the driver anticlockwise starts the compressor with the third starting current, and the starting time is variable T2; 7, calculating a mechanical angle xi of the motor rotor rotating in the T2, judging whether xi is greater than a second angle threshold value or not, if so, entering a step 8, and if not, obtaining T2 again and repeating the step 7; and 8, the driver cuts off the third starting current and enters the step 5. By adopting the mode, the starting performance of the inverter compressor can be improved.
Description
technical field [0001] The invention relates to the technical field of frequency conversion compressor control, in particular to a start-up control method for a frequency conversion compressor. Background technique [0002] Permanent magnet synchronous motor not only has the characteristics of simple structure, small size, no mechanical commutator, and convenient maintenance, but also has the advantages of high torque density and reliable operation, so it has been widely used in refrigerator compressors. However, in the actual refrigerator matching process, due to the harsh operating environment and working conditions of the permanent magnet synchronous motor, the starting performance of the inverter compressor directly affects the refrigerator energy consumption matching test and noise matching test. How to improve the starting performance of the inverter compressor has become one of the problems to be solved urgently. SUMMARY OF THE INVENTION [0003] In order to improv...
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