Electrical design of an energy recovery transformer for the three-thyristor chopper (IM-ETR-007)

The E.R. Transformer serves an important function by limiting the Voltage Overshoot on the commutating capacitor. Its design is complicated, involving equations requiring iterative solutions, but reasonable approximations can be made. Three transformer designs are presented: (1) for Southern Region application (600 V system) (2) for Manchester-Bury...