新型九电平电源钳位型逆变器

A New Type Nine Level Power Clamp Inverter

文章对多电平逆变器的基本结构及调制方法进行了详细的阐述,对二极管钳位型多电平逆变器、电容钳位型多电平逆变器、以及级联多电平逆变器的基本原理及各自的优缺点进行了分析,并介绍了多电平逆变器的系统设计。文中详细阐述了电源钳位型九电平逆变系统的硬件设计和软件设计。其硬件电路设计包括主电路、死区电路、缓冲电路、驱动电路的设计;软件设计采用TI公司的TMS320LF2407A数字信号处理器(DSP)作为信号处理器件;仿真部分利用软件PSIM做为仿真验证,验证了所提出的新型九电平电源钳位型逆变器拓扑的正确性,然后通过评估板获得了控制信号触发脉冲。最后通过软件和硬件的系统联合调试,获得几种新型混合多电平逆变器拓扑的单相实验结果,验证了文章所提出的新型九电平逆变电路拓扑的可行性和控制的有效性。

This paper expatiats the basic structure and the modulation methods of the multi-level inverter in detail. It simply analyzes the basic principles of the diode clamp multi-level inverter , the clamp-capacitance multi-level inverter, as welt as the cascade multi-level inverter and analyzes their strengths and weaknesses. It has also accounted for system design of the multi-level inverter in detail . This paper elaborates on the hardware design and software design of the nine powerclamp-level inverter system. The hardware circuit design includes the main circuit, the dead zone circuit, the buffer circuit and the driver circuit design. Tl＇s TMS320LF2407A digital signal processor （DSP） is used as the signal processing devices in software design. PSIM simulation software is used as part of the simulation confirmation and the correctness of the proposed new nine-level power clamp-inverter topology is verified. Then through the evaluation board, the control signals trigger pulse is obtained. Finally, through software and hardware system joint commissioning, single-phase results of several new types of hybrid multi-level inverter topology are obtained and the feasibility and effectiveness of the proposed new type of nine-level inverter circuit topology are verified.