| 引用本文: | 陶 顺,要海江,宋一丹,等.三相Vienna型充电机超高次谐波产生机理分析[J].电力系统保护与控制,2022,50(5):22-32. |
| TAO Shun,YAO Haijiang,SONG Yidan,et al.Analysis of the generation mechanism of supraharmonics in a three-phase Vienna charger[J].Power System Protection and Control,2022,50(5):22-32 |
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| 摘要: |
| 针对典型超高次谐波源—电动汽车充电机开展研究，建立了基于同相/反相层叠式载波的空间矢量调制下单模块Vienna电路超高次谐波发射模型，推导了Vienna电路超高次谐波电压表达式。建立了多模块并联的三相Vienna型充电机超高次谐波发射等效模型。推导了充电机超高次谐波电流表达式，分析了网络阻抗、滤波器阻抗、背景谐波等参数对充电机超高次谐波发射幅值的影响。研究表明，三相Vienna型充电机超高次谐波具有以开关频率为中心、呈窄带发射的特点。基于同相层叠式载波SVM调制的充电机超高次谐波发射中，载波谐波只包含奇次载波谐波，偶次边带谐波仅存在于奇次载波倍频处，奇次边带谐波仅存在于偶次载波倍频处。基于反相层叠式载波SVM调制的充电机超高次谐波发射的特征谐波，主要集中在开关频率及其倍数频率的奇次边带谐波处。最后通过仿真与实际测试验证了理论模型的正确性。 |
| 关键词: 电动汽车充电机 Vienna 超高次谐波 产生机理 典型特征 |
| DOI：DOI: 10.19783/j.cnki.pspc.210830 |
| 分类号: |
| 基金项目:国家自然科学基金项目资助(51777066) |
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| Analysis of the generation mechanism of supraharmonics in a three-phase Vienna charger |
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TAO Shun1, YAO Haijiang2, SONG Yidan1, MA Xihuan1, WANG Siyang1
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(1. State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric
Power University), Beijing 102206, China; 2. State Grid Tianjin Electric Power Company, Tianjin 300010, China)
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| Abstract: |
| The study is carried out on a typical supraharmonic source-electric vehicle charger. The supraharmonic emission model of a Vienna circuit under space vector modulation based on in-phase/inverse stacked carrier is established, and the expression of the supraharmonic voltage of the Vienna circuit is deduced. A supraharmonic emission equivalent model of a multi-module parallel-based three-phase Vienna charger is established. It deduces the expression of the supraharmonic current of the charger, and analyzes the influence of network impedance, filter impedance, background harmonics and other parameters on the amplitude of the supraharmonic emission of the charger. The research shows that the supraharmonics of the three-phase Vienna charger have the characteristics of narrow-band emission centered on the switching frequency. The supraharmonic emission of chargers based on in-phase stacked carrier SVM modulation only contains odd-order carrier harmonics. Even-order sideband harmonics only exist at the odd-order carrier multiplier, and odd-order sideband harmonics only exist at even-order carrier harmonics. The characteristic harmonics of the supraharmonic emission of chargers based on inverted stacked carrier SVM modulation are mainly concentrated at the odd-order sideband harmonics of the switching frequency and its multiples. Finally, the correctness of the theoretical model is verified by simulation and actual test.
This work is supported by the National Natural Science Foundation of China (No. 51777066). |
| Key words: electric car charger Vienna supraharmonic production mechanism typical characteristics |
