The Regenerative Chopper Propulsion System for Modern Transit

The regenerative chopper dc propulsion system offers a substantial economic saving over more conventional types of dc traction systems. A description of operation is presented for one of the various regenerative systems that is presently being used. A simplified economic analysis is then utilized to identify that the economic advantages of the system are readily achievable by the transit operator. The contribution of the separately excited dc traction motor to this economic gain is identified.