一种基于开关电容的十三电平逆变器

doi:10.16180/j.cnki.issn1007-7820.2024.06.007

摘要/Abstract

摘要：

针对现有多电平逆变器拓扑体积大、成本高和结构复杂的问题,文中提出一种基于开关电容的十三电平逆变器。所提拓扑由1个直流输入电源、3个电容器及14个开关器件组成,可实现6倍升压的十三电平输出,在具有较低成本和较小体积的同时减少了系统输出谐波的含量,且无需H桥即可实现逆变即可降低开关管的电压应力。所提逆变器无需任何辅助方法就能实现电容电压自平衡,简化控制的复杂度。文中通过与其他传统多电平逆变器的对比分析,验证了所提拓扑的优越性。仿真和样机平台的实验结果证明所提逆变器在稳态和动态情况下均具有良好的性能。

关键词: 多电平, 逆变器, 开关电容, 高输出电平, 升压, 电容电压自平衡, 低电压应力

Abstract:

In view of the problems of large volume, high cost and complex structure of the existing multilevel inverter topology, a 13-level inverter based on switched capacitor is proposed. The proposed topology is composed of a DC input power supply, 3 capacitors and 14 switching devices, which realizes a 13-level output with 6 times boost. The proposed topology has lower cost and smaller volume, reduces the harmonic content of the system output, and realizes the inverter without H-bridge to reduce the voltage stress of the switch tube.The proposed inverter can achieve capacitor voltage self-balancing without any auxiliary method, which simplifies the complexity of control. The superiority of the proposed topology is verified by comparison with other traditional multilevel inverters. Simulation and experimental results verification on the simulation and prototype platform prove that the inverter has good performance in both steady and dynamic conditions.

Key words: multilevel, inverter, switching capacitor, high output level, step-up, self-balance of capacitor voltage, lower voltage stress

中图分类号:

TM464

吴强, 刘丽, 李圣清, 邓娜, 冯浩田. 一种基于开关电容的十三电平逆变器[J]. 电子科技, 2024, 37(6): 51-60.

WU Qiang, LIU Li, LI Shengqing, DENG Na, FENG Haotian. A Thirteen-Level Inverter Based on Switching Capacitor[J]. Electronic Science and Technology, 2024, 37(6): 51-60.

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参考文献 19

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输出电压	导通开关管	C₁	C₂	C₃
6V_dc	S₁、S₃、S₇、S₈、S₉、S₁₁、S₁₄	▼	▼	▼
5V_dc	S₁、S₂、S₄、S₇、S₈、S₉、S₁₁、S₁₄	▼	▼	▼
4V_dc	S₂、S₄、S₅、S₇、S₈、S₉、S₁₁、S₁₄	▲	▲	▼
3V_dc	S₁、S₃、S₆、S₇、S₉、S₁₀、S₁₁、S₁₄	▼	▼	▲
2V_dc	S₁、S₂、S₄、S₇、S₁₀、S₁₁、S₁₄	▼	▼	—
V_dc	S₂、S₄、S₅、S₇、S₁₀、S₁₁、S₁₄	▲	▲	—
0⁺	S₂、S₄、S₅、S₆、S₉、S₁₁、S₁₃	▲	▲	—
0^-	S₂、S₄、S₅、S₇、S₁₀、S₁₂、S₁₄	▲	▲	—
-V_dc	S₂、S₄、S₅、S₆、S₉、S₁₂、S₁₃	▲	▲	—
-2V_dc	S₁、S₂、S₄、S₆、S₉、S₁₂、S₁₃	▼	▼	—
-3V_dc	S₁、S₃、S₆、S₇、S₉、S₁₀、S₁₂、S₁₃	▼	▼	▲
-4V_dc	S₂、S₄、S₅、S₆、S₈、S₁₀、S₁₂、S₁₃	▲	▲	▼
-5V_dc	S₁、S₂、S₄、S₆、S₈、S₁₀、S₁₂、S₁₃	▼	▼	▼
-6V_dc	S₁、S₃、S₆、S₈、S₁₀、S₁₂、S₁₃	▼	▼	▼

j	U_o	r_eq
0	0	4r_s
1	V_dc	ESR+6r_s
2	2V_dc	ESR+6r_s
3	3V_dc	2ESR+6r_s
4	4V_dc	2ESR+7r_s
5	5V_dc	2ESR+7r_s
6	6V_dc	3ESR+7r_s

元器件	规格(参数)
控制器	MK60FX512
开关管	IRF3205
电压互感器	ZMPT101B
二极管	FR104、1N5819
电容	1 μF、10μF、100μF、4 700μF
电阻	10 Ω、10 kΩ
电感	2 mH