Harmonic Of Electric Power System Inhibition And Synthesis Compensation Research

On the base of the harm and research direction of harmonic this paper discusses the harmonic inhibition,reactive compensation method and existent problem, analyzes active electric power filter theory technology investigation. According to analyzed harmonic analysis algorithm this paper puts forward a kind of valid of according to reply a sequence to add a window to put quickly small wave of the value SRFFT the transformation harmonic examination calculate way, and carries on imitating analysis to that calculate way. This examination algorithm applies in the shunt active power filter's harmonic inhibition and reactive compensation, builds simulation model and analyzes by function transfer method. In practice task, each link of the APF can't avoid time delay, so to analyze the factor that influence APF solid hour compensate, put the harmonic electric current instruction compute and repair postpone generated by PWM control into the point research. The reason of time delay produced by the whole digital and the mold number mix control method gives the condition that realized the no bad control. On this foundation, this paper puts forward a simple mutually compensate way which has the good compensation effect for steady load and variety load.