新型软开关DC／AC升压变换器控制方法及仿真研究  

Simulation Research of the Soft-switching Control Stratgy for a new DC/AC Boost Converter

作　　者：张忠杰[1] 程苗苗[1] 包跃跃 刘治国[1] 涂春鸣[1] 帅智康[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《磁性元件与电源》2016年第11期144-148,共5页Components and Power

基　　金：湖南大学青年教师成长计划;国家自然科学基金青年科学基金项目（项目批准号：51307048）.

摘　　要：软开关技术在提高功率变换器性能等方面正在被广泛的研究，具有降低开关损耗和开关噪声，提高了瞬时响应速度等特点。本文首先提出了一种新型软开关DC／AC升压变换器拓扑结构，和传统的电压型逆变电路不同，该电路在直流侧采用小电容，允许电容电压大幅度波动。其次，本文利用电容和电感谐振实现软开关的工作原理，提出了合理的软开关控制策略。最后通过PGIM软件进行仿真验证。仿真结果表明所提出的控制方法是可行的。Soft-switching technology is widely studied to improve performance of power converterswith lower switching losses and switching noise. It also improves the transient response characteristics of power converters. In this paper, a novel soft-switching DC / AC boost converter topology is firstly studied Compared with the traditional voltage-source inverter, the new topology is characterized with a small capacitor which is installed in the DC link . Then, on basis of the resonance principle between the capacitance and line inductance, a reasonable control strategy is provided to realize soft-switching of all power switches. Finally, some simulations are performed by using PSIM. The simulation results verify that the proposed control strategy is practical.

关 键 词：软开关 DC/AC变换 PDM控制 高功率密度 

分 类 号：TN86[电子电信—信息与通信工程]