Power supply device and method for trolleybus-mounted electric equipment
A technology for electrical equipment and trolleybuses, which is applied in the field of power supply devices for on-board electrical equipment of trolleybuses, and can solve the problems of unstable output of frequency converters and easy damage to on-board electrical equipment of trolleybuses.
Inactive Publication Date: 2016-12-14
北京公共交通控股(集团)有限公司
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Problems solved by technology
[0004] Embodiments of the present invention provide a power supply device and a power supply method for trolleybus vehicle-mounted electrical equipment, to solve how to improve the stability of the output of the frequency converter in the trolleybus, thereby avoiding unstable output of the frequency converter and easy damage to the trolleybus vehicle-mounted power supply equipment problem
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] like figure 2 As shown, the embodiment of the present invention provides a power supply device 200 for on-board electrical equipment of a trolleybus, including: a frequency converter 201, a first reactance 202, a second reactance 203, a third reactance 204, a first capacitor 205, and a second capacitor 206 , a third capacitor 207 and a three-phase transformer 208 . Here, it should be noted that the first reactance 202 , the second reactance 203 , and ...
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The invention provides a power supply device and method for trolleybus-mounted electric equipment, and relates to the technical field of trolleybuses. According to the power supply device, a frequency converter is provided with a direct current input interface and an alternating current output interface. The direct current input interface is loaded with direct current voltage provided by the power supply device. Three phases of the alternating current output interface are connected with one end of a first electric reactor, one end of a second electric reactor and one end of a third electric reactor correspondingly. The other end of the first electric reactor, the other end of the second electric reactor and the other end of the third electric reactor are connected with the input end of a three-phase transformer, and also connected with one end of a first capacitor, one end of a second capacitor and one end of a third capacitor correspondingly. The other end of the first capacitor, the other end of the second capacitor and the other end of the third capacitor are connected together. The output end of the three-phase transformer is connected with the trolleybus-mounted electric equipment. By adoption of the power supply device and method for the trolleybus-mounted electric equipment, the purpose of improving the output stability of the frequency converter in a trolleybus can be achieved, and the situation that the output instability of the frequency converter is prone to damaging the trolleybus-mounted electric equipment is avoided.
Description
technical field [0001] The invention relates to the technical field of trolley buses, in particular to a power supply device and a power supply method for electric equipment on board a trolley bus. Background technique [0002] With the vigorous development of current public transport, trolleybuses have been widely used in the passenger transport industry. And how to supply power for the on-board electrical equipment of the trolley bus has become a hot issue. [0003] like figure 1 As shown, the power supply mode of the trolleybus on-board electrical equipment in the prior art is generally that the frequency converter 101 converts the DC power provided by the DC power supply 103 into AC power, and directly supplies power to each trolley bus on-board electrical equipment 102 . However, in this power supply mode, the electrical equipment is jointly powered by a frequency converter. Due to the large number of loads, the on-board electrical equipment of each trolley bus is fr...
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IPC IPC(8): B60L1/00B60L1/02
CPCB60L1/00B60L1/003B60L1/02
Inventor 张新生李建顺王志全王昊
Owner 北京公共交通控股(集团)有限公司