Estimation of energy characteristics of the asynchronous motor with a combined winding

PURPOSE. Asynchronous motors are the main consumers of electrical energy. Increasing their energy performance can contribute to a significant reduction in consumption general. Using combined 12-zone winding instead standard 6-zone one theoretically lead decrease losses stator asynchronous motor and reduce additional caused by higher spatial harmonics. The purpose work is assess effect using on characteristics induction motor. METHODS. study was performed two AIR71V4 electric motors, which had other winding. In experiment, engines were rated voltage, load carried out an electromagnetic loading device. tested range loads from idle nominal. experiment five times. RESULTS. under analysis shows dependences current strength, consumed active reactive power, efficiency, power factor engine load. CONCLUSION. results showed that with over entire investigated has lower both compared winding, while factors these practically same. greatest difference efficiency observed at than nominal favor improved model, but also load, 3,1%.