Method of controlling vectors in motor and vector controlling inverter device

Abstract

A vector control method and apparatus are described for controlling a motor by detecting a primary current in a motor (not shown) driven by an inverter circuit having an electric current detector. The primary current detection value detected by the electric current detector is divided to give a current-for-torque detection value (Iq') and a detected current-for-excitation detection value (Id'), and thus a primary current instruction value is divided to give a current-for-torque instruction value (Vq*) and a current-for-excitation value (Vd*). The apportionment of the current-for-torque detection value and current-for-excitation detection value each obtained from the primary current detection value is changed by an Iq gain circuit (gain Kq) and an Id gain circuit (gain Kd), which are discrete circuits. The rated torque characteristics of the motor is changed according to change of the apportionment.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    GB-2237943-AMay 15, 1991Mitsubishi Electric Corp, Yuzuru TunehiroInverter control apparatus
    GB-2280798-AFebruary 08, 1995Eaton CorpStator flux oriented control for induction motor

NO-Patent Citations (0)

    Title

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    EP-2831995-A4November 25, 2015Byd Co LtdVerfahren zur regelung der drehzahl eines elektromotors
    US-6184638-B1February 06, 2001Mitsubishi Denki Kabushiki KaishaControl system for an induction motor