- To show in the figure, a separately excited dc motor, fed through two single-phase semi-converter, one for the armature circuit and the other for the field circuit, is shown in the figure.
- Both converter 1, as well as converter 2, are connected to the same single phase source.
- This converter also offers one quadrant drive and it can be used up to about 15 kW dc drives.
- The waveform for current and voltage are sketched in the figure on the assumption of ripple-free armature current.
- Load voltage waveform for V0 = Vt is the same as shown in the figure.
V0 = Vt = Vm/∏ * ( 1+ Cos ɖ )
for field circuit, Vf = Vm / ∏ * ( 1+ Cos ɖ1 )
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| Single phase semi converter drive |