Traction-auxiliary converter for internal combustion locomotive, and converter cabinet
A technology for auxiliary converters and diesel locomotives, applied in the field of converters, to achieve the effects of reducing energy consumption, improving task completion rate, and simplifying the assembly process
Inactive Publication Date: 2019-11-22
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0003] The present invention aims to solve the above three technical problems of the existing internal combustion AC transmission locomotives
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[0017] refer to Figure 1~Figure 3 , a traction-auxiliary converter for a diesel locomotive according to the present invention includes a rectifier 1, the rectifier 1 is electrically connected to the main generator through an input circuit, the rectifier 1 is connected to an intermediate DC circuit 2, and the three The phase alternating current is converted into direct current through the rectifier 1, and then input to the intermediate direct current circuit 2, and the intermediate direct current circuit 2 is provided with a ground detection module 3, a manual discharge module 4, a brake chopper 5, and an inverter group connected in parallel. , the brake chopper 5 is configured with a chopper brake resistor, and the inverter group includes an auxiliary fixed-frequency inverter 6 , an auxiliary variable-frequency inverter 7 and a plurality of traction inverters 8 connected in parallel. As a preferred embodiment, each inverter group is provided with three traction inverters 8, a...
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The invention relates to the technical field of converters, in particular to a traction-auxiliary converter for an internal combustion locomotive and a converter cabinet, and aims at solving the technical problems that an existing internal combustion AC transmission locomotive is low in integration level, poor in energy conservation and emission reduction effect and large in occupied locomotive space. The traction-auxiliary converter comprises a rectifier electrically connected with a main generator, the rectifier is connected with an intermediate direct-current loop; a grounding detection module, a manual discharge module, a brake chopper and an inverter group which are connected in parallel are arranged in the intermediate direct-current loop, the brake chopper is provided with a chopperbrake resistor, and the inverter group comprises an auxiliary fixed-frequency inverter, an auxiliary variable-frequency inverter and three traction inverters which are connected in parallel. The converter cabinet comprises two groups of converters, the auxiliary fixed-frequency inverters of the two groups of traction-auxiliary converters are electrically connected through a fixed-frequency expansion loop, and the auxiliary variable-frequency inverters of the two groups of traction-auxiliary converters are electrically connected through a variable-frequency expansion loop.
Description
technical field [0001] The invention relates to the technical field of converters, in particular to a traction-auxiliary converter and a converter cabinet for a diesel locomotive. Background technique [0002] With the continuous improvement of the power and speed of diesel engines, diesel locomotives continue to develop towards high power, while the power of DC traction generators is restricted by factors such as commutation and locomotive limits. The power of a single engine is almost limited below 2200KW, which cannot well meet the development need. With the rapid development of railway transportation, in order to achieve the goal of "high-speed passenger transportation and heavy freight" of locomotives, it is necessary to apply advanced and practical AC drive technology combined with the characteristics of internal combustion locomotives to internal combustion locomotives to improve locomotive performance and improve the level of railway equipment manufacturing. At pres...
Claims
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IPC IPC(8): H02M5/40B61C17/00
CPCB61C17/00H02M5/40
Inventor 王彬金春羽刘谆孙湘漪马连凤柴媛孙晓丽
Owner CRRC YONGJI ELECTRIC CO LTD