Vector control apparatus for induction motor

Details Vector control apparatus for induction motor Vector control apparatus for induction motor

H - Electricity

02

P

H02P 5/00 (2006.01) H02P 21/08 (2006.01)

Patent

CA 2101796

An improved vector control apparatus for an induction motor is disclosed. In the vector control apparatus, a divider (13) is provided which receives an exciting instruction .lambda. 2d*/M* from a secondary magnetic flux instruction amplifier (11) which outputs .lambda. 2d*/M* according to an angular frequency .omega.r derived from a speed detector (43). The divider (13) receives an exciting inductance variation AMn from the exciting inductance M' compensation circuit (12, 12') to divide AMn by .lambda.2d*/M* so that the derived output value is supplied to a first-order advance element calculation block (12) so that a target value i1d* in a d-axis component in a primary current of the induction motor is derived.

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