ABSTRACT
This chapter deals with single-phase induction machine (IM) testing. It discusses the loss segregation tests of single-phase IM based on a method developed by the legendary C. G. Veinott in 1935. The elliptic magnetic field in the airgap of single-phase IMs in the presence of space mmf harmonics, magnetic saturation, rotor skin effect, and interbar rotor currents makes a complete theoretical modelling a formidable task. Among many potential tests to determine single-phase IM parameters and loss segregation, two of them have gained rather large acceptance. One is based on single-phase supplying of either main or auxiliary winding of the single-phase IM at zero speed (S = 1) and on no load. The second method is based on the principle of supplying the single-phase IM from a symmetrical voltage supply. In some single-phase IMs, closed rotor slots are used to reduce noise. One problem encountered in the load tests is the slip measurement.
