Single phase dual converter drive

• A single phase dual converter drive, obtained by connecting two full converters in anti parallel, as shown in figure. The feeding is a separately excited dc motor.
• It uses is limited to about 15 kW dc drive.
• It offers four quadrant operation.
• For working in first and fourth quadrant, converter 1 is in operation.
• For operation in second and third quadrant, converter 2 is energized.
• For the four quadrant operation demands that field winding of the motor is emerged from the single phase or three phase full converter.

For the armature converter 1 in operation,   V_t =  2V_m/∏ * Cos ɖ₁   for 0< ɖ₁ <  ∏

For the armature converter 2 in operation,   V_t =  2V_m/∏ * Cos ɖ₂   for 0< ɖ₂ <  ∏

Where  ɖ₁ +  ɖ₂ = ∏


For field converter V_f =  2V_m/∏ * Cos ɖ₃   for 0< ɖ₃ <  ∏

Single phase dual converter