Title:
METHOD FOR PERFORMING ROTATIONAL SPEED SYNCHRONISATION
Document Type and Number:
WIPO Patent Application WO/2021/098458
Kind Code:
A1
Abstract:
A method for performing rotational speed synchronization of a first transmission component (32, 34) having a first initial rotational speed with a second transmission component (18) having a second initial rotational speed, by means of a three-phase AC electric motor (2b) that is rotationally connected to the first transmission component (32, 34), during a gear switch in a stepped gear transmission (6) of a drive train (4) having a switching mechanism (50) enabling the stator windings (W1-W3) of the AC electric motor (2b) to be selectively connected in star configuration or delta configuration. The method comprising obtaining a command, or determining, that a gear switch should be performed (S10); shifting the stator windings (W1-W3) configuration of the AC electric motor (2b) to delta configuration, or ensuring that the stator windings (W1-W3) configuration of the AC electric motor (2b) is in delta configuration (S20); and controlling operation of the AC electric motor (2b) for accomplishing rotational speed synchronization of the first transmission component (32, 34) and the second transmission component (18) (S30).
Inventors:
GORANTLA NARAYANA MURTHY SRI VISHNU (SE)
Application Number:
PCT/CN2020/124242
Publication Date:
May 27, 2021
Filing Date:
October 28, 2020
Export Citation:
Assignee:
NINGBO GEELY AUTOMOBILE RES & DEVELOPMENT CO LTD (CN)
International Classes:
B60K17/06; B60K17/16; F16H37/08
Foreign References:
| US20120058855A1 | 2012-03-08 | |||
| CN106808988A | 2017-06-09 | |||
| CN108367659A | 2018-08-03 | |||
| CN201390152Y | 2010-01-27 | |||
| CN101412369A | 2009-04-22 | |||
| US20190202281A1 | 2019-07-04 | |||
| US20160131229A1 | 2016-05-12 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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