4-pulse and 6-pulse thyristor rectifiers can be used as regenerative load bank. Also the same can be used as a charger or DC power supply.

While operating in forward direction the system act as a rectifier, receives power from AC mains and feeds DC power to the load.

While operating in reverse direction the system act as a line commutated inverter, receives DC power from its DC terminals and feeds AC output to the mains.

Regenerative load banks can save a huge amount of energy.