ELECTRIC VEHICLE CONTROLLING DEVICE AND METHOD

Title:

ELECTRIC VEHICLE CONTROLLING DEVICE AND METHOD

Document Type and Number:

Japanese Patent JPH09135600

Kind Code:

A

Abstract:

To make it possible to control a high-precision driving by utilizing existing current and speed detectors.

A secondary resistance presuming means 8 of an electric vehicle controlling device 1 presumes the secondary resistance value R2' of an AC motor 5 by inputting a slip frequency command ωs* and a primary voltage command V1*. which are calculated by a driving force control system 3 based on a command signal Tr from an accelerator 2, a speed signal ωm from a speed detector 6 and a current signal 11 from a current detector 7, and the current signal I1. Correcting the AC motor 5 secondary resistance set value of the AC motor 5 stored in advance by using the secondary resistance presumed value R2' the driving force control system 3 controls the AC motor 5 via a power converter 4 based on the corrected secondary resistance set value.

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Inventors:

KANEKO SATORU
MASAKI RYOZO
TAKAMOTO YUSUKE
OBARA SANSHIRO
OTSU HIDEKAZU

Application Number:

JP28826895A

Publication Date:

May 20, 1997

Filing Date:

November 07, 1995

Export Citation:

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Assignee:

HITACHI LTD

International Classes:

B60L9/24; H02P21/00; H02P21/14; H02P21/18; H02P21/22; H02P21/24; H02P21/36; H02P23/07; H02P23/14; H02P23/16; H02P27/04; H02P27/08; (IPC1-7): H02P21/00; B60L9/24

Attorney, Agent or Firm:

Yukihiko Takada

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