基于基波谐振原理的谐波电能利用方法研究

Research on the Using Method of Harmonic Energy Based on the Principle of Fundamental Resonance

针对电力系统谐波污染日益严重的现状,提出一种基波谐振原理与直流储能设备相结合的谐波电能利用的方法,在三相线路中串入由电感与电容组合而成的基波谐振电路,该电路对基波电流无影响,但对谐波电流呈现高阻抗性,可以迫使谐波电流通过二极管电路以正、负直流电能的形式流入直流储能设备,储存的直流电能经平波后可直接供给直流负载也可逆变后送回电网。首先分析了谐波电能利用的可行性,设计出了谐波电能利用的方法,最后通过实验进行了验证,分析了此方法的谐波抑制效果的优越性与谐波电能利用的正确性。

In view of more and more serious harmonic pollution, a method using of harmonic energy which is based on the principle of fundamental resonance and DC energy storage device was presented. Fundamental resonance circuit made up of inductance and capacitance is connected in three-phase circuit. The circuit doesn＇t affect fundamental circuit, but take on characteristics of high-impedance of harmonic circuit, and could compel harmonic current inflow into DC energy storage device by diode in the form of positive and negative DC electric energy. The stored DC electric energy is not only directly provided to DC load after smoothing but also taken back to power grid after source inverting. Feasibility of harmonic energy using was analyzed firstly, and method of harmonic energy using was designed. Experimental studies were showed for verifying. Superiority of harmonic reduction effect and correctness of harmonic electric energy of this method were analyzed, too.