The Power Factor Analysis And Compensation Of Induction Heating System On Power Side

Aims at the situation of low Power Factor and high THD of the induction heating system, this paper bases on the real parameters of one 100kW/400kHz system, first, makes a detail theory analysis about the Power Factor on power side when the system in situation of three special load; second, builds a simplify simulation system of induction heating system, makes a particular research about the change rule of the reactive power and the current wave harmonics when the heating equipment is in the case of constant load and designs a TSF+LC compensate project bases on the identity of reactive power and current wave harmonics of it, then builds a simulation model of TSF+LC compensator ,a serious experiment has been done through it, simulation results shows that when the output active power changes from 30kW to 100kW, the TSF+LC compensator can dynamic compensate the power factor of line side to greater than 0.90, but never over compensate, and the THD also falls down; lastly, makes relevant design and debug about hardware and software.