Control method of on-board energy storage system of urban rail train based on power-time curve
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A technology for urban rail trains and time curves, which is applied in vehicle energy storage, electric braking systems, battery/fuel cell control devices, etc. Control system burden and other issues, to achieve the effect of reducing power impact, reducing heat dissipation, and improving performance
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A technology for urban rail trains and time curves, which is applied in vehicle energy storage, electric braking systems, battery/fuel cell control devices, etc. Control system burden and other issues, to achieve the effect of reducing power impact, reducing heat dissipation, and improving performance
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[0028] A method for controlling an on-board energy storage system for urban rail trains based on a power-time curve, the on-board energy storage system for urban rail trains comprises a traction motor 1, a four-quadrant inverter 2, two bidirectional DC-DC converters 3, a control Module 4, battery 5, super capacitor 6, resistance energy dissipation device 7 and catenary 8;
[0029] The input end of the traction motor 1 is connected to the three-phase connection end of the four-quadrant inverter 2; the DC end of the four-quadrant inverter 2 is connected to the catenary 8; A bidirectional DC-DC converter 3 is connected to the battery 5, and at the same time, the DC terminal of the four-quadrant inverter 2 is connected to the super capacitor 6 through the second bidirectional DC-DC converter 3. At the same time, the DC terminal of the four-quadrant inverter 2 The terminal is connected to the resistance energy consumption device 7; the control part of the bidirectional DC-DC conver...
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Abstract
The present invention proposes a method for controlling the on-board energy storage system of urban rail trains based on a power-time curve. The on-board energy storage system of urban rail trains includes a traction motor, a four-quadrant inverter, two bidirectional DC-DC converters, A control module, a storage battery, a super capacitor, a resistance energy consuming device and a catenary; in the control method, double cut-off frequencies are used to control the charging action of the storage battery and the super capacitor; the beneficial technical effects of the present invention are: The control method of the on-board energy storage system of urban rail trains based on the power-time curve, this scheme can give full play to the advantages of high absorption efficiency and large absorption power of super capacitors, reduce the power impact on the battery, improve the performance of the hybrid energy storage system, reduce the Unnecessary heat dissipation.
Description
technical field [0001] The invention relates to a braking energy recovery technology for urban rail trains, in particular to a control method for an on-board energy storage system of urban rail trains based on a power-time curve. Background technique [0002] In order to recover and utilize the braking energy of urban rail trains, the most common method is to install on-board hybrid energy storage devices on urban rail trains. The on-board hybrid energy storage device usually adopts the structure of "super capacitor + battery". During the braking process of the urban rail train, the traction motor works in the state of generating electricity, converting the kinetic energy of the vehicle into electrical energy. At the same time, a first-order low-pass filter is used to decompose the power of the train regenerative braking into high-frequency components and low-frequency components, so as to generate the corresponding power control signal, and control the bidirectional DC-DC c...
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