The structure of the sinewaveinverter is given, the working principles of the control circuit and voltage feedforward are analyzed.
给出了正弦波逆变器的主电路结构,分析了控制电路及电压前馈的工作原理。
2
A new control method of multiunit inverter is described, which determines the triggering pulse for each unit to obtain the sinewave output through multiple-phase shifting superimposition principle.
By digital adjustment with high precision on the DC bias of reference sinewave, the DC bias contained in inverter output voltage can be adjusted to restrain DC circulating current.