Development And Research Of Method Of Reducing Losses In Asynchronous Motors Testing By Mutual Loads

An analysis of the process of testing electric machines by the method of mutual loading is given. The case in which an asynchronous machine is used as a loading machine is considered. Effect: increased energy efficiency due to regulation of voltage parameters applied to stator winding of load machine. The mathematical model of the system of two mechanically coupled three-phase asynchronous machines is refined by taking into account the dependence of the power of magnetic losses in the stator on the frequency and the effective voltage value. Mathematical modeling and experimental studies have shown the effectiveness of the proposed method of reducing losses. The results of mathematical modeling on machines of different capacities showed a significant decrease in efficiency of the proposed method for high-power machines. The obtained results are recommended for implementation at the enterprises engaged in the production and operation of electric machines.