The invention provides a buffer switching-on control method based on an urban rail transit bidirectional converter device, and the method comprises the steps: controlling the bidirectional converter device to carry out the rectification switching-on and switching-off through employing the DC wire inlet voltage as a target value under the condition that the DC wire inlet voltage is greater than the DC voltage of an equipment side, the starting and stopping process comprises the steps of starting up when the equipment is lower than a target value minus the hysteresis voltage, so that the voltage is increased instantly, and stopping the equipment when the voltage is increased to the target value plus the hysteresis voltage, so that the voltage is reduced slowly; and circulating according to the startup and shutdown process until the difference value between the DC wire inlet voltage and the equipment side DC voltage is detected to be within the bidirectional hysteresis voltage range, and controlling the DC contactor to be switched on. The invention provides a new thought for closing control of the bidirectional converter, and direct current impact generated in the closing process of the direct current contactor is reduced.
本发明提供一种基于城市轨道交通双向变流装置的缓冲合闸控制方法,包括:在直流进线口电压大于设备侧直流电压的情况下,控制双向变流装置以直流进线口电压为目标值整流开停机,开停机的过程为当设备低于目标值减去滞环电压时开机,使得电压瞬间抬升,当电压升压至目标值加上滞环电压时,停机使得电压缓慢下降;按照该开停机的过程进行循环,直到检测到直流进线口电压和设备侧直流电压差值在双向滞环电压范围内,则控制直流接触器合闸。本发明提供了一种双向变流装置合闸控制的新思路,降低了直流接触器合闸过程中产生的直流电流冲击。
Buffer switching-on control method based on urban rail transit bidirectional converter
一种基于城市轨道交通双向变流装置的缓冲合闸控制方法
2023-09-19
Patent
Elektronische Ressource
Chinesisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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