Title:
ENERGY-SAVING CONTROL METHOD FOR CONTACTOR
Document Type and Number:
WIPO Patent Application WO/2023/056777
Kind Code:
A1
Abstract:
Disclosed is an energy-saving control method for a contactor, comprising: connecting a contactor: after controlling a power supply to be connected, an energy storage circuit operates to charge an energy storage capacitor, and a coil of a contactor KM generates an attractive magnetic force after receiving a pulse voltage signal, causing an action mechanism of the contactor KM to act; disconnecting the contactor: when controlling the power supply to disconnect, the energy storage capacitor of the energy storage circuit discharges so as to provide release electric energy for the coil of the contactor KM, the release electric energy passing through a full-bridge driving control circuit to output a pulse having a polarity opposite to that of the coil of the contactor KM, and the coil of the contactor KM generates a reverse magnetic force. In the method of the present invention, a magnetic holding contactor completely replaces a conventional energy-saving control module of a common contactor, and has a common non-magnetic holding contactor, achieving single-wire inching control of connection and disconnection and solving the problem of a magnetic holding contactor not being able to achieve single-wire inching control of connection and disconnection; in addition, power consumption of the contactor coil in the present invention can be reduced by 98%, having a significant energy-saving effect.
Inventors:
NING LEPING (CN)
JIANG YONG (CN)
JIANG YONG (CN)
Application Number:
PCT/CN2022/110370
Publication Date:
April 13, 2023
Filing Date:
August 04, 2022
Export Citation:
Assignee:
NANJING QUANNING ELECTRICAL APPLIANCE CO LTD (CN)
International Classes:
H01H47/04; H01H47/18; H01H47/32; H01H51/01
Foreign References:
| CN113611572A | 2021-11-05 | |||
| CN102842461A | 2012-12-26 | |||
| CN2483827Y | 2002-03-27 | |||
| DE102011080226A1 | 2013-02-07 | |||
| DE19641188C1 | 1998-01-08 |
Attorney, Agent or Firm:
NANJING XINZHIHANG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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