一种单级三相Zeta三电平逆变器

王立乔; 李婧; 李宗阳; 沈虹

doi:10.19912/j.0254-0096.tynxb.2025-0027

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (5) : 135-145. DOI: 10.19912/j.0254-0096.tynxb.2025-0027

一种单级三相Zeta三电平逆变器

王立乔¹, 李婧¹, 李宗阳², 沈虹¹

作者信息 +

SINGLE-STAGE THREE-PHASE ZETA THREE-LEVEL INVERTER

Wang Liqiao¹, Li Jing¹, Li Zongyang², Shen Hong¹

Author information +

文章历史 +

摘要

提出一种单级三相Zeta三电平逆变器。该逆变器符合当前可应用于大功率光伏系统可升降压的多电平三相逆变器的需求。此外,采用载波相移调制策略能有效抑制偶次谐波的产生,提高逆变器的波形质量。首先介绍逆变器的工作原理,然后分析注入零矢量的载波相移控制方法,并对其升降压能力进行分析且对拓扑进行电感电容参数设计。通过设计闭环控制策略,使系统具备一定的抗干扰能力。最后通过仿真及实验验证拓扑的可行性及正确性。

Abstract

A single-stage three-phase Zeta three-level inverter is introduced in this paper. The inverter meets the current demand for three-phase inverters with multi-level capability and the ability to step up/down voltage, which can be applied to high-power photovoltaic systems. Additionally, the carrier phase-shifted pulse width modulation is applied in this paper, which can effectively suppress the generation of even-order harmonics and improve the waveform quality of the inverter. The working principle of the proposed inverter is introduced in this paper. The CPS-PWM with zero-vector injection is also analyzed. Its buck-boost capability is also analyzed,followed by the design of inductance and capacitance parameters for the inverter. By designing a closed-loop control strategy, the system is endowed with a certain level of anti-interference capability. Ultimately, the simulation and experimentation confirm the feasibility and accuracy of the network structure.

导出引用

王立乔, 李婧, 李宗阳, 沈虹. 一种单级三相Zeta三电平逆变器[J]. 太阳能学报. 2026, 47(5): 135-145 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0027

Wang Liqiao, Li Jing, Li Zongyang, Shen Hong. SINGLE-STAGE THREE-PHASE ZETA THREE-LEVEL INVERTER[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 135-145 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0027

中图分类号： TM464

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