中点箝位型逆变器在EAST低次谐波平台中的应用

沈显顺; 高格; 茆华风; 李俊; 卢晶; 吴亚楠

doi:10.11884/HPLPB201931.180348

中点箝位型逆变器在EAST低次谐波平台中的应用

doi: 10.11884/HPLPB201931.180348

沈显顺^{1, 2,},
高格^{1, 2},
茆华风¹,
李俊¹,
卢晶¹,
吴亚楠^1, ,

1.
中国科学院等离子体物理研究所, 合肥 230031
2.
中国科学技术大学研究生院科学岛分院, 合肥 230026

基金项目:

国家自然科学基金项目 51707190

详细信息

作者简介:
沈显顺(1988-)，男，博士研究生，从事无功补偿与谐波抑制研究; xsshen@ipp.ac.cn

通讯作者:
吴亚楠(1986-)，男，博士，副研究员，从事大容量特种电源与电网兼容性研究; wyn@ipp.ac.cn

中图分类号: TM464
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- 被引次数: 0
出版历程
- 收稿日期: 2019-02-15
- 修回日期: 2019-02-15
- 刊出日期: 2019-05-15

Application of neutral-point-clamped inverter in EAST low-order harmonic experiment platform

Shen Xianshun^{1, 2
,},
Gao Ge^{1, 2},
Mao Huafeng¹,
Li Jun¹,
Lu Jing¹,
Wu Ya'nan^{1
, ,}

1.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
2.
Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 针对EAST磁体电源等非线性负载产生低次谐波(75~125 Hz)难以治理的问题，提出注入式混合有源滤波的方案。基于EAST低次谐波实验平台，对注入式混合有源电力滤波装置的拓扑结构与滤波原理进行了研究; 同时采用一种降低直流侧中点电位波动的三电平空间电压矢量调制算法，并给出基本矢量作用时间的求取方法; 对该方案及算法进行了仿真与实验验证，仿真与实验结果具有很高的一致性，证明该方案能有效抑制EAST磁体电源运行中产生的低次谐波及其谐振放大。
- EAST电源 /
- 低次谐波 /
- 混合有源滤波 /
- 中点电位波动 /
- 三电平空间电压矢量
Abstract: Aiming at the problem that low-order harmonics (75-125 Hz) are difficult to control due to non-linear loads such as EAST magnet power supply, an injection hybrid active filtering scheme is proposed. Based on the EAST low-order harmonic experimental platform, the topology and filtering principle of the injected hybrid active power filter device are studied. At the same time, a three-level space voltage vector modulation algorithm for reducing the midpoint potential fluctuation of the DC side is adopted. The method of obtaining the basic vector action time is given. The simulation and experimental verification of the scheme and algorithm are carried out, and the simulation results are in good agreement with the experimental results, which proves that the scheme can effectively suppress the low-order harmonics and resonance amplification produced in the operation of EAST magnet power supply.
- EAST power supply /
- low-order harmonic /
- hybrid active filter /
- midpoint potential fluctuation /
- three-level space voltage vector

HTML全文

图 1 二极管箝位型三电平变流器主电路

Figure 1. Power stage of three-level NPC inverter

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图 2 三电平逆变器空间状态矢量图

Figure 2. Space voltage vector with their switching states for three-level inverter

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图 3 系统结构

Figure 3. System topology

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图 4 系统单相等效电路

Figure 4. Single phase equivalent circuit of system

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图 5 变换后等效电路

Figure 5. Transformed equivalent circuit

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图 6 三电平状态空间矢量图

Figure 6. Space voltage vector for three-level inverter

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图 7 扇区Ⅰ中的参考矢量合成

Figure 7. Vector synthesization for desired vector in the first sector

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图 8 谐振放大倍数曲线

Figure 8. Resonance magnification curve

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图 9 母线电流波形

Figure 9. Bus current waveforms

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图 10 治理前后母线电流波形

Figure 10. Bus current waveform before and after treatment

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表 1 实验平台系统参数

Table 1. Experimental platform system parameters

	L/mH	C/μF
2nd	30.00	152.0/340.0
3rd	8.14	142.4
5th	5.40	73.8

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表 2 混合谐波抑制实验电流值

Table 2. Experimental current value of mixed harmonic suppression

	harmonic current generated by harmonic source /A			harmonic current at bus line /A
	75 Hz	100 Hz	125 Hz	75 Hz	100 Hz	125 Hz
without APF	11.2	10.8	10.5	12.5	10.6	10.9
with APF	11.2	10.8	10.5	1.9	3.1	5.6

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