A multi-flow traction drive system and method based on full power devices
A traction drive, full power technology, used in vehicle components, power lines, transportation and packaging, etc., can solve problems such as difficult maintenance, voltage and current waveform distortion, and heavy equipment.
Active Publication Date: 2016-09-28
HUNAN UNIV
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Problems solved by technology
[0007] The present invention provides a multi-stream traction transmission system and method based on full-power devices. In order to overcome the problems of large volume, heavy equipment, environmental pollution caused by mineral oil and difficulty in maintenance in the above-mentioned prior art, the iron core is saturated. Harmonics are generated due to voltage and current waveform distortion, load fluctuations have an impact on the grid side, and the problem of large noise
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[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0040] like figure 1 As shown, a multi-current traction transmission system based on full-power devices includes full-power devices and AC inductors 1, pantographs 2, traction power supply catenary 3, traction motors 13, and wheel rails 14. The full-power devices Including input stage, intermediate isolation stage and output stage;
[0041] The input stage is cascaded in series by n stages of H-bridge type power conversion input modules, and each stage of H-bridge type power conversion input module includes an H-bridge type rectifier 4, a half-bridge inverter 6 and a first resonant capacitor 7;
[0042] The intermediate isolation stage is an intermediate frequency or high frequency transformer with n-level input windings and m-level output windings;
[0043] The output stage includes an m-level H-bridge power conversion output module, and each H-bridg...
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The invention discloses a multi-mode traction drive system and method based on a full-power device. The multi-mode traction drive system is connected with a traction power supply network through the full-power device in an electric locomotive, and the full-power device sequentially comprises an input stage, a middle isolation stage and an output stage. The multi-mode traction drive system based on the full-power device can be used in an alternating current power supply mode and a direct current power supply mode. The input stage is formed by n H-bridge type power conversion modules through series connection and cascade connection. The middle isolation stage consists of intermediate-frequency or high-frequency transformers of n input windings and m output windings. The output stage is composed of m H-bridge type power conversion modules. The single-phase multi-winding intermediate-frequency or high-frequency transformers and a three-phase inverter have functions of a traction transformer and a direct current filter inductor, an industrial-frequency transformer is omitted, and size, weight, cost and noise reduction of the system is facilitated.
Description
technical field [0001] The invention relates to the field of track traction transmission systems, in particular to a multi-stream traction transmission system and method based on full-power devices. Background technique [0002] In recent years, as my country's electrified railway technology continues to develop towards high speed and heavy load, the progress of my country's electrified railway technology has attracted widespread attention from all over the world. Especially the progress and development of my country's high-speed rail technology. China South Locomotive and China North Locomotive are currently the main manufacturers of electric locomotives in my country, and the high-performance and high-speed electric locomotives developed by them can fully meet the needs of the domestic market. However, the electric locomotives produced in my country are only for the development of domestic high-speed railways, which will seriously limit the healthy and rapid development o...
Claims
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IPC IPC(8): B60M3/00
Inventor 许加柱董欣晓罗隆福
Owner HUNAN UNIV