Design and Realization of 36V /30A Charging Power Supply for Ni-MH Battery

A 36V/30A charging power supply for Ni-MH battery is designed. The main circuit is based on full - bridge converter topology. The control circuit is based on UC3825. The demand of Ni-MH battery charging characteristic is satisfied by using constant-voltage-restricted-current circuit and PI regulation circuit. The steady characteristics and dynamic characteristics of power supply are improved. The reliability of power supply is improved by using over-current and over-voltage protecting circuit.