A new control method of multiunit inverter is described, which determines the triggeringpulse for each unit to obtain the sine wave output through multiple-phase shifting superimposition principle.
By analyzing the equivalent circuit of STATCOM, the basic requirements to the triggering system was pointed out, and the CPLD-based functional structure for triggeringpulse generator was established.
The electronic control unit allows current to flow through the ignition coil primary winding until it senses a triggering voltage pulse from the speed sensor, or pickup coil.