一种适应智能电网要求的新型逆变装置研究

摘要

逆变是重要的电能转换方式,在实现电能形态转换的同时,也会对电网电能质量产生严重影响,智能电网对电能质量提出了更高的要求,针对传统逆变技术的种种缺陷,提出了一种适应智能电网要求的新型逆变装置,该装置是一种新型的低谐波三相低频逆变装置,开关器件工作于工频50 Hz的状态,具有开关损耗小、谐波含量少、可靠性高、直流电压利用率高、控制简单成本少等特性,实验结果表明,该装置具有很高的实际使用价值和推广性.%An inverter is an important way of energy conversion.However,the inverter can have severe impacts on the power quality of the power grid during the energy conversion.Given that the smart grid raises more severe requirements for the power quality,in view of various shortcomings of the traditional inverter technology,this paper proposes a new type of inverting device which meets the requirements for the smart grid.The device is a new three-phase low-frequency inverting device with low harmonics,and its switching device operates at the 50 Hz power frequency.This device is characteristic of small loss in the switch,less harmonic content,high reliability,high DC voltage utilization rate,simple control and reduced cost.The experimental results show that the device has very high practical application value and is easy to popularize.