| Abstract |
This paper extent the stationary reference frame
[I], to the modeling and analysis of the torque behavior of a
two-phase unsymmetrical induction machine with a shifted
auxiliary winding. By computer simiulation, compared with
experimental results, it is verified the influence of the
electrical auxiliary phase stator shift over the machine's
torque. The analysis is made for steady-state and transient
state operation.
The two-phase induction machine (TPIM) is widely
used in many light-duty applications were three-phase
supply is not readily available. During the development of
such a machine, there are several options, including the
spatial placement of the auxiliary winding. The torque-slip
characteristics can be manipulated by shifting the auxiliary
winding from the quadrature position.
The analysis of the single-phase or two-phase
induction machine with a shifted :auxiliary winding was
made by including time domain equivalent circuit [2],
symmetrical components [3], or multiple reference frames
[4]. The first two methods are acceptable for analyzing the
steady-state performance of the machine, while the third
method involves too many equations and variables in order
to describe the dynamic performance of the TPIM. |
