| Abstract |
The objective of this paper is to explain vector control from a physical standpoint. It is shown how
steady-state analysis based on space-vector-theory leads naturally to a physical explanation of vector
control. An analogy with a current excited transformer with a short-circuited secondary is used to
help explain the basic concepts of vector control. The mathematical expressions associated with a
vector-controlled drive are derived from basic principles. It is shown that the vector-controlled model
of the induction motor is also valid under general conditions. PSpice offers an excellent platform for
modeling of the vector controlled drive for illustration of the effects of de-tuning. By simplifying its
explanation, vector control can be taught, at least qualitatively, in the first course on electric drives to
a relatively large number of students, potentially resulting in more applications of vector control, and
further research and innovation. |
