A low-cost, single phase induction generator

A low cost, single phase induction generator suitable for use in stand-alone electric power systems is presented. A novel technique is described to actively control the generator voltage by varying the numberof shunt capacitors connected to the generator. Forced commutation of the switching SCR´s is not required. Models are derived to analyze the small signal performance of an induction generator. Data from a 4 mW engine-generator set are presented. This paper describes the design of a low-cost, stand-alone engine-generator set. The feasibility of using an induction machine is demonstrated. A novel method of providing excitation current while regulating the generator voltage is described. Models are developed to characterize the performance of the overall system, and data from a 4 kW prototype are presented.