Title:
RAIL TRANSIT VEHICLE, LOW-FREQUENCY HARMONIC SUPPRESSION CIRCUIT, AND SUPPRESSION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/007517
Kind Code:
A1
Abstract:
Disclosed in the present invention are a rail transit vehicle, a low-frequency harmonic suppression circuit, and a suppression method. The low-frequency harmonic suppression circuit comprises: an RLC filter circuit, having an input end connected to a current collector and an output end grounded; and an inverter, connected in parallel to the rear end of the RLC filter circuit, and having an output end connected to a traction motor. The inductor voltage and the resistor voltage of the RLC filter circuit are consistent with the input voltage of the inverter; and the impedance of the RLC filter circuit matches the impedance of an input loop of the inverter. The present invention can ensure that a current harmonic waveform in a test frequency band is smooth and has no spike protrusion.
Inventors:
FAN LIBING (CN)
ZHOU ANDE (CN)
LI XINING (CN)
CHEN JIANHUA (CN)
LI CHUNBO (CN)
LUO YUQI (CN)
ZHOU ANDE (CN)
LI XINING (CN)
CHEN JIANHUA (CN)
LI CHUNBO (CN)
LUO YUQI (CN)
Application Number:
PCT/CN2022/136143
Publication Date:
January 11, 2024
Filing Date:
December 02, 2022
Export Citation:
Assignee:
CRRC ZHUZHOU LOCOMOTIVE CO LTD (CN)
International Classes:
H02J1/02; B60L1/00; B60L9/00; B60L15/06; B61C3/00; B61C17/00; H02M7/44
Foreign References:
| CN115085176A | 2022-09-20 | |||
| CN1710796A | 2005-12-21 | |||
| CN204472589U | 2015-07-15 |
Attorney, Agent or Firm:
CHANGSHA ZONEKEY PATENT LAW FIRM (CN)
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