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Motor control system for electric fork-lift truck

A technology of electric forklift and motor control, applied in the direction of motor generator control, AC motor control, control system, etc., to achieve the effect of meeting the control requirements

Active Publication Date: 2013-07-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, AC permanent magnet synchronous motors are much better than traditional DC motors, synchronous motors, induction motors and brushless DC motors in terms of operating characteristics and control methods, but there is no drive scheme for AC permanent magnet synchronous motors at this stage

Method used

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  • Motor control system for electric fork-lift truck
  • Motor control system for electric fork-lift truck
  • Motor control system for electric fork-lift truck

Examples

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Embodiment Construction

[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0015] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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PUM

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Abstract

The invention discloses a motor control system for an electric fork-lift truck, which comprises a lifting control subsystem and a drive control subsystem, wherein the lifting control subsystem is used for controlling output power of a lifting motor of the electric fork-lift truck in order to adjust a working mode of the electric fork-lift truck, and comprises a first collection module, a first detection module and a first control module; the drive control subsystem is used for controlling output power of the drive control subsystem of the electric fork-lift truck in order to adjust a speed of the electric fork-lift truck, and comprises a second collection module, a second detection module and a second control module. The motor control system can control the lifting motor and a drive motor of the electric fork-lift truck, and meet a control requirement of the electric fork-lift truck.

Description

technical field [0001] The invention relates to the technical field of vehicle manufacturing and control, in particular to a motor control system for an electric forklift. Background technique [0002] Conventional electric vehicles are powered by DC motors. However, the DC motor itself has low efficiency, large volume and mass, resulting in low speed and high cost. The AC drive system has been gradually applied to electric forklifts due to its high production efficiency and low maintenance cost. [0003] Among them, AC permanent magnet synchronous motors are much better than traditional DC motors, synchronous motors, induction motors and brushless DC motors in terms of operating characteristics and control methods, but there is no drive scheme for AC permanent magnet synchronous motors at this stage. Contents of the invention [0004] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, and especially propose a motor co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/08H02P27/08H02P21/06H02P21/22
Inventor 杨广明周伟
Owner BYD CO LTD
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