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| Research on series resonance of input circuit in inverter air-conditioners and its prevention and control |
| CUI Yongwei1, LI Guangming2, DU Chong3, GUAN Yanbin2 |
1. Qingdao Haier Air Conditioner Co., Ltd, Qingdao, Shandong 266100;
2. Qingdao Bantek Invert Technology Co., Ltd, Qingdao, Shandong 266000;
3. Qingdao Mingjiu Electronic Technology Co., Ltd, Qingdao, Shandong 266555 |
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Abstract In response to the abnormal overvoltage protection in distorted power environments which leads to lockout of inverter air-conditioners and even damage to key components due to overvoltage, the series resonance mechanism analysis and oscillation process simulation for the input circuit are carried out. Three series resonance suppression methods, namely changing the circuit topology, replacing capacitors, and consuming resonant energy, are proposed. They are respectively applicable to three different scenarios: thorough cure, field rectification and after-sales service. The effectiveness of the proposed methods is verified through simulation and field application.
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Received: 27 March 2025
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| Cite this article: |
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CUI Yongwei,LI Guangming,DU Chong等. Research on series resonance of input circuit in inverter air-conditioners and its prevention and control[J]. Electrical Engineering, 2025, 26(10): 49-54.
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| URL: |
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https://dqjs.cesmedia.cn/EN/Y2025/V26/I10/49
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2025, Vol. 26 
