Title:
VECTOR CONTROL DEVICE FOR INDUCTION MOTOR
Document Type and Number:
Japanese Patent JP3166525
Kind Code:
B2
Abstract:
PURPOSE: To perform control through an arithmetic operation of only d-q coordinates by using respective specific formulas to calculates primary/secondary resistance charge quantities, and calculating feedforward voltage of a d-axis/ q-axis, based on a result of calculating resistance change quantity, transformed into a three-phase voltage command value to supply it from an inverter.
CONSTITUTION: In a resistance change quantity arithmetic means 29, primary current command values ild*, ilq* of d-q axis; primary currents dld, dlq; deviation current Δild, Δilq; inverter angular frequency Winv and compensation voltages eld (fb), elq (fb) are used to obtain primary/secondary resistance change quantities ΔR1, ΔR2 from formulas [I], [II]. Based on an arithmetic result, feedforward voltages eld (ff), elq (ff) are obtained, so that primary voltage command values eld*, eld* and a phase Θ of d-q coordinate system are inputted to a coordinate transforming means 32. Three-phase voltage command values Vu*, Vv*, Vw*, obtained by transformation, are supplied from an inverter 20. In this way, processing can be made simply through an arithmetic operation only on the d-q coordinates.
Inventors:
Takao Maruyama
Hideto Negoro
Hideto Negoro
Application Number:
JP32751494A
Publication Date:
May 14, 2001
Filing Date:
December 28, 1994
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02P27/04; H02P21/00; H02P21/05; H02P21/22; H02P23/04; H02P23/07; H02P23/16; H02P27/08; (IPC1-7): H02P21/00
Domestic Patent References:
| JP2250690A | ||||
| JP3135388A | ||||
| JP3253288A | ||||
| JP4304183A | ||||
| JP5199784A | ||||
| JP5292777A | ||||
| JP6209590A | ||||
| JP6276776A |
Attorney, Agent or Firm:
Kaneo Miyata (2 outside)