单相H6拓扑离网型逆变器无死区控制方法仿真研究

doi:10.16182/j.issn1004731x.joss.201612028

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (12): 3073-3080.doi: 10.16182/j.issn1004731x.joss.201612028

单相H6拓扑离网型逆变器无死区控制方法仿真研究

夏鲲¹, 李菁¹, 葛越¹, 沈丽蓉¹, 王一鸣², 许颇²

1.上海理工大学,上海 200093;
2.宁波锦浪新能源科技有限公司,宁波 315712

收稿日期:2015-03-24 修回日期:2015-05-17 出版日期:2016-12-08 发布日期:2020-08-13
作者简介:夏鲲(1980-),男,上海,博士, 副教授,研究方向为电机及其控制、电力电子技术应用;李菁(1989-),女,湖北孝感,硕士,研究方向为电力电子技术应用。
基金资助:
宁波市科委重大科技攻关项目(2012B10031), 沪江基金(B14002/D14002)

Research of Non-dead-time Control Method on Single-phase Off-grid Inverter Based on H6 Topology

Xia Kun¹, Li Jing¹, Ge Yue¹, Shen Lirong¹, Wang Yiming², Xu Po²

1.University of Shanghai for Science and Technology, Shanghai, 200093, China;
2. Ginlong Technologies Co. Ltd, Ningbo, 315712, China

Received:2015-03-24 Revised:2015-05-17 Online:2016-12-08 Published:2020-08-13

摘要/Abstract

摘要： 提出了一种基于H6拓扑的无死区控制方法,通过检测输出电压、电感电流的大小和方向,在输出电压与电感电流同向时调制桥臂开关管,反向时调制续流开关管,而在电压、电流过零点附近仍然加入死区,以确保直流母线不会短路,由控制模块计算后进而调整开关管的开关状态,消除绝大多数死区时间的加入。在MATLAB/Simulink环境下构建了基于H6拓扑的单相离网型逆变器电压电流双闭环无死区控制方法仿真模型。仿真结果表明,与传统有死区控制相比,无死区控制方法能够显著提高直流母线电压利用率,降低输出电压总谐波畸变率(THD)。

关键词: H6拓扑, 无死区控制, 直流母线电压利用率, 总谐波畸变率

Abstract: A novel non-dead-time control strategy based on H6 topology was proposed. Through detecting the value and direction of the output voltage and current of inductor, the power switches of bridge arm were modulated if they were in the same direction, and the freewheeling switches were modulated if they were opposite. In order to protect the DC bus voltage from shorting out, the dead time should be added during the zero-crossing of voltage and current. And the states of switches were adjusted by calculation of the control module. Then most dead time could be eliminated. The simulation model for the single-phase off-grid inverter based on H6 topology was constructed in MATLAB/Simulink circumstance, in which the non-dead-time control with voltage and current double closed loop was applied. Simulation results show that, compared with dead-time control, the new control method can significantly improve the utilization of DC bus voltage and reduce Total Harmonic Distortion (THD) of output voltage.

Key words: H6 topology, non-dead-time control, the utilization rate of DC bus voltage, THD

中图分类号:

TM464

夏鲲, 李菁, 葛越, 沈丽蓉, 王一鸣, 许颇. 单相H6拓扑离网型逆变器无死区控制方法仿真研究[J]. 系统仿真学报, 2016, 28(12): 3073-3080.

Xia Kun, Li Jing, Ge Yue, Shen Lirong, Wang Yiming, Xu Po. Research of Non-dead-time Control Method on Single-phase Off-grid Inverter Based on H6 Topology[J]. Journal of System Simulation, 2016, 28(12): 3073-3080.

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单相H6拓扑离网型逆变器无死区控制方法仿真研究

Research of Non-dead-time Control Method on Single-phase Off-grid Inverter Based on H6 Topology

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