- The schematic diagram of three phases dual converter d drive as shown in the figure.
- As per the circuit diagram converter, 1 allows motor control 1 and 4 quadrants whereas with converter 2 the operation in 2 and 3 quadrants obtained
- For reversing the polarity of motor generated emf for regeneration purpose, field circuit must be energized from a single phase or three phases full converter.
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| Three phases dual converter dc drive
When converter 1 or 2 is in operation
Average output voltage,
V0 = Vt is = 3Vm l/ 2∏ * Cos ɖ1 for 0< ɖ1 < ∏
With a 3 phase full converter in the filed circuit,
Vf = 3Vml/2∏ * Cos ɖf for 0< ɖf < ∏
In case of circulating types of dual converter, ɖ1 + ɖ2 =180 degree
Application :
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