Title:
CONTROL METHOD FOR SUPPRESSING LOW-SPEED IDLING OF LOCOMOTIVE
Document Type and Number:
WIPO Patent Application WO/2023/093307
Kind Code:
A1
Abstract:
Provided in the present invention is a control method for suppressing low-speed idling of a locomotive. The method comprises the following steps: S1, performing detection on an acceleration control shaft, which involves: S11, when an action condition of an IGBT gate electrode of a primary inverter is established, that is, a converter system of a locomotive has received a microcomputer instruction to perform a traction action of the whole vehicle, performing detection to determine whether the gate electrode of the inverter can perform a normal action; S12, measuring the current that is output by an electric motor, and measuring the range of a torque current instruction value of the electric motor; and S13, counting the number of instances of idling of the acceleration control shaft. By means of the present invention, after a speed signal abnormality of a locomotive is detected, the reference speed of the locomotive and the traction forces of other shafts are no longer affected by an abnormal speed signal of a faulty shaft, such that the reduction amplitude of the traction force of the whole vehicle is greatly reduced, and the traction force can be exerted normally, thereby guaranteeing the normal operation of the locomotive, solving the problem of the locomotive not being able to be started normally due to an insufficient traction force caused by false detection of idling of other shafts, and effectively improving the travelling safety and reliability of the locomotive.
Inventors:
YU DAN (CN)
HOU QIANG (CN)
WANG YING (CN)
ZHANG YANMIN (CN)
LI JUANHONG (CN)
CHEN YUYANG (CN)
HOU QIANG (CN)
WANG YING (CN)
ZHANG YANMIN (CN)
LI JUANHONG (CN)
CHEN YUYANG (CN)
Application Number:
PCT/CN2022/123463
Publication Date:
June 01, 2023
Filing Date:
September 30, 2022
Export Citation:
Assignee:
CRRC DALIAN CO LTD (CN)
International Classes:
B60L15/20; B60L3/12; B61C3/00
Foreign References:
| CN113942399A | 2022-01-18 | |||
| CN112406559A | 2021-02-26 | |||
| CN112339727A | 2021-02-09 | |||
| CN104527659A | 2015-04-22 | |||
| CN1535862A | 2004-10-13 | |||
| US3997822A | 1976-12-14 |
Attorney, Agent or Firm:
LIAN & LIEN IP ATTORNEYS (CN)
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