Locomotive traction converter network voltage fluctuation composite detection control device and control method thereof

A traction converter, composite detection technology, used in harmonic reduction devices, AC network voltage adjustment, AC network to reduce harmonics/ripples, etc.

Inactive Publication Date: 2021-01-19
CRRC YONGJI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention solves the problems and defects existing in the existing method for detection and control of network voltage fluctuations of locomotive ...

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  • Locomotive traction converter network voltage fluctuation composite detection control device and control method thereof
  • Locomotive traction converter network voltage fluctuation composite detection control device and control method thereof
  • Locomotive traction converter network voltage fluctuation composite detection control device and control method thereof

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Embodiment Construction

[0069] The locomotive traction converter network voltage fluctuation compound detection control device, including the traction four-quadrant rectifier controller, the controller adopts the double closed-loop control structure of voltage outer loop controller + current inner loop controller, and the current inner loop controller is PR control The voltage outer loop controller is a sliding mode controller.

[0070] The combined detection and control method of network voltage fluctuation of locomotive traction converter is realized by traction four-quadrant rectifier control software. The four-quadrant rectifier control software adopts a double closed-loop control strategy of voltage outer loop sliding mode The design method of the ring sliding mode controller is as follows:

[0071] 1. Write the corresponding state equation according to the control requirements and the controlled object

[0072] The controlled object of the voltage outer loop: the bus voltage, by controlling th...

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Abstract

The invention relates to locomotive traction converter network voltage fluctuation control, in particular to a locomotive traction converter network voltage fluctuation composite detection control device and a control method thereof. The invention provides the locomotive traction converter network voltage fluctuation composite detection control device and the control method thereof to solve the problems and defects existing in an existing locomotive traction converter network voltage fluctuation detection control method. The method is realized through four-quadrant rectifier control software.The voltage outer loop of the control device is changed into a sliding mode controller from a traditional PI controller, and a multiple control algorithm is further added, so that on one hand, the network voltage jump quantity can be quickly controlled when network voltage fluctuation is detected, and on the other hand, the pollution of alternating-current side current harmonics to a power grid isreduced. The robustness and the anti-interference capability of a control system are improved; faults of a locomotive high-voltage system, a traction system, an auxiliary system and the like cannot be caused when network voltage fluctuation occurs; thus safe and stable operation of a train is guaranteed.

Description

technical field [0001] The invention relates to network voltage fluctuation control of locomotive traction converters, in particular to a compound detection control device and control method for network voltage fluctuations of locomotive traction converters. Background technique [0002] With the increase of my country's railway operating mileage year by year, the railway traction power supply system is getting larger and larger, and new models are constantly emerging, and some new problems have emerged in the operation process. The network voltage fluctuation caused by harmonics is caused by the unreasonable matching of electrical coupling parameters between the locomotive / EMU and the power supply system. It is usually related to high harmonic content and system capacitive equipment, which will cause high voltage, Failure of traction, auxiliary systems, etc. Low-frequency grid voltage fluctuations and the continuous amplification of grid voltage are mostly caused by defect...

Claims

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Application Information

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IPC IPC(8): H02M7/797H02J3/12H02J3/01B60M3/02
CPCB60M3/02H02J3/01H02J3/12H02M7/797Y02E40/40
Inventor 王力张瑞峰王维于森林詹哲军
Owner CRRC YONGJI ELECTRIC CO LTD
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