Performance of a synchronous generator with bridge rectified output

The performance of a salient pole synchronous generator connected to a bridge rectifier load is derived from the fundamental machine equations. The generator is fitted with both direct- and quadrature-axis damper windings, and the bridge rectifier load is fully controlled. Explicit equations are obtained for displacement angle, commutation angle, phase voltages, armature currents, field current and damper winding currents. From these equations, the performance of generators with and without damper windings, connected to controlled or uncontrolled bridge rectifier loads can be predicted from given load current, field current, generator speed, bridge delay angle and machine parameters. Comparative experimental and theoretical results are given.