A FIRING PULSE GENERATION DEVICE FOR A SINGLE PHASE PULSE WIDTH MODULATED INVERTER FOR GENERATING THE CONTROLLED SIGNAL FOR CONTROLLING THE OUTPUT VOLTAGE OF THE INVERTER AND THE METHOD OF GENERATION

摘要

A firing pulse generation device for a single phase pulse width modulated inverter for generating the controlled signal for controlling the output voltage of the inverter comprising an operating amplifier integrated circuit based square wave generator (3) for generating variable amplitude square wave, a 'RC' filter circuit (4) for transforming variable amplitude square wave to variable amplitude sine wave, a comparator for comparing fixed amplitude triangular wave with variable amplitude sine wave, a constant amplitude triangle wave generator (8) for generating fixed amplitude triangle wave called pulse width modulated gating signals, a gating logic and interlock circuit (6) for protecting the Top and Bottom switching device of inverter bridge; and an inverter bridge (7) having power semiconductor transistor switches, wherein a control signal generator (1) is disposed in the circuit for generating the control signal for varying the amplitude of the square wave applied as controlled auxiliary power supply voltate parameter (AUXVCC) wherein VSA reference electronic circuit (VSAR) (2) is disposed for generating the VCP signal.