AUTHOR : Ji-Young Lee, Tao Sun, Jung-Pyo Hong, and Woo-Taik Lee
ORGANIZATION : International Compumag Society
JOURNAL : COMPUMAG
YEAR : 2005.6.26
VOL : IV
ISSUE :
PAGE : 226 ~ 227
Now days, drive cost is more popular issue rather then
motor manufacture cost in especially brushless reluctance
motors. While conventional winding switched reluctance
motor (SRM) can mainly be driven by an asymmetrical
converter, toroidal winding SRM cannot only be driven by an
asymmetric converter but can also be driven by a full-bridge
inverter usually used as BLDC drive [1]. Since full-bridge
inverter can be easily and cheaply constructed by commercial
chip set, the toroidal windings in SRM become attractive.
However, it can be more or less complex to estimate the
characteristics of toroidal winding SRM driven by full bridge
because of irregular current shape due to the variation of
inductance, and switching sequence. Even though it is said
that the driving characteristic of a toroidal winding SRM are
similar to those of the method of exciting two phase of a fully
pitched winding SRM [1, 3], the direct study about toroidal
winding SRM is needed to estimate exact its characteristics.
Therefore this paper deals with the dynamic analysis of
toroidal winding SRM driven by full bridge inverter.
Inductance profiles of toroidal winding SRM are first
investigated, and then, voltage equations are made considering
both the drive topology and the motor parameters. The
dynamic analysis results will be compared with those of
conventional winding SRM which are already examined for
verification of analysis method.
II. TOROIDAL WINDING SRM