BR9714885A - Controller for electric vehicles, and re-grip controller for electric vehicles - Google Patents

Controller for electric vehicles, and re-grip controller for electric vehicles

Info

Publication number
BR9714885A
BR9714885A BR9714885-7A BR9714885A BR9714885A BR 9714885 A BR9714885 A BR 9714885A BR 9714885 A BR9714885 A BR 9714885A BR 9714885 A BR9714885 A BR 9714885A
Authority
BR
Brazil
Prior art keywords
electric vehicles
controller
adhesion
current component
wheel speed
Prior art date
Application number
BR9714885-7A
Other languages
Portuguese (pt)
Inventor
Takashi Kaneko
Akira Horie
Ken Itou
Takeshi Ando
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to BR9714885-7A priority Critical patent/BR9714885A/en
Priority claimed from PCT/JP1997/003386 external-priority patent/WO1999015355A1/en
Publication of BR9714885A publication Critical patent/BR9714885A/en

Links

Classifications

    • Y02T10/7241—
    • Y02T10/7275—

Abstract

"CONTROLADOR PARA VEìCULOS ELéTRICOS, E, CONTROLADOR DE RE-ADERêNCIA PARA VEìCULOS ELéTRICOS". Um controlador para veículos elétricos compreendendo um inversor de controle de vetor para controlar motores que acionam rodas dos veículos elétricos pela divisão da corrente primária do motor em uma componente de corrente de excitação e uma componente de corrente de vetor, e controlar as respectivas componentes de corrente baseado em um comando respectivamente projetado, caracterizado por compreender ainda meios para detectar uma velocidade de roda (incluindo freq³ência de rotor do motor proporcional à velocidade da roda), meios para detectar deslizamento e derrapagem da roda baseado em um valor diferencial (uma velocidade variável com o tempo) da velocidade de roda detectada, meios para detectar a re-aderência da roda baseado no valor diferencial e um valor diferencial duplo da velocidade de roda detectada, e meios para ajustar o comando projetado para a componente de corrente de torque em resposta aos dois meios de detecção. De acordo com a presente invenção, o ponto e re-aderência pode ser precisamente detectado quando uma roda gera deslizamento ou derrapagem, e a componente de corrente de torque do motor pode ser retomada rapidamente pela utilização da resposta rápida do controle de vetor, e, desde que o torque pode ser utilizado eficazmente até um limite de aderência física mesmo em uma condição na qual o coeficiente de aderência seja baixo, como em dias chuvosos, a aceleração e desaceleração do veículo elétrico podem ser aumentadas tanto quanto possível."CONTROLLER FOR ELECTRIC VEHICLES, AND, RE-ADHESION CONTROLLER FOR ELECTRIC VEHICLES". A controller for electric vehicles comprising a vector control inverter to control motors that drive wheels of electric vehicles by dividing the primary motor current into an excitation current component and a vector current component, and control the respective current components based on a respectively designed command, characterized by also comprising means for detecting wheel speed (including motor rotor frequency proportional to wheel speed), means for detecting wheel slip and slippage based on a differential value (a variable speed with the time) of the detected wheel speed, means for detecting wheel re-adhesion based on the differential value and a double differential value for the detected wheel speed, and means for adjusting the designed control for the torque current component in response to two means of detection. In accordance with the present invention, the point and re-grip can be precisely detected when a wheel generates slipping or skidding, and the torque current component of the motor can be quickly resumed by using the fast response of the vector control, and, since the torque can be used effectively up to a limit of physical adhesion even in a condition in which the coefficient of adhesion is low, as in rainy days, the acceleration and deceleration of the electric vehicle can be increased as much as possible.

BR9714885-7A 1997-09-24 1997-09-24 Controller for electric vehicles, and re-grip controller for electric vehicles BR9714885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR9714885-7A BR9714885A (en) 1997-09-24 1997-09-24 Controller for electric vehicles, and re-grip controller for electric vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP1997/003386 WO1999015355A1 (en) 1997-09-24 1997-09-24 Controller of electric car
BR9714885-7A BR9714885A (en) 1997-09-24 1997-09-24 Controller for electric vehicles, and re-grip controller for electric vehicles

Publications (1)

Publication Number Publication Date
BR9714885A true BR9714885A (en) 2000-08-08

Family

ID=25665028

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9714885-7A BR9714885A (en) 1997-09-24 1997-09-24 Controller for electric vehicles, and re-grip controller for electric vehicles

Country Status (1)

Country Link
BR (1) BR9714885A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113479073A (en) * 2021-08-02 2021-10-08 潍柴动力股份有限公司 Slope-sliding-prevention control method and device, vehicle control unit and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113479073A (en) * 2021-08-02 2021-10-08 潍柴动力股份有限公司 Slope-sliding-prevention control method and device, vehicle control unit and storage medium

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFERIDO COM BASE NO ART. 8O COMBINADO COM O ART. 13 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.