摘要
针对传统多电平逆变电路结构和控制原理复杂,实现成本高,且不适应于中小功率逆变场合运用的缺点,设计了一种适用于中小功率场合的多电平逆变。通过组合变流技术合理地控制PWM,获得多电平逆变所需的电压波形。介绍了该多电平逆变的原理和设计方法,给出了系统的电路结构,并通过Multisim11.0对设计进行了仿真。仿真结果表明,能通过控制给定电压的方法实现多电平逆变,输出电压波形能较好地跟随给定,控制方法简单。
Traditional multilevel inverter circuit structure and control principle are complex and high cost to realize,and it is not suitable for small power inverter applications. A multilevel inverter is designed for small and medium-sized power applications. The voltage waveform for multi-level inverter requirement is obtained through the combination of converter technology and the reasonable control of PWM. The principle and design method of multilevel inverter are introduced, the circuit structure of the system is presented, and the scheme is simulated by Multisim11.0. The simulation results show that by means of controlling the given voltage to realize multilevel inverter, the output voltage waveform can better follow the given and the control method is simple.
出处
《湖南工业大学学报》
2014年第4期35-40,共6页
Journal of Hunan University of Technology
