PROBLEM TO BE SOLVED: To improve the reliability by saving the power of a cooling device provided in a power conversion device for electric railway.SOLUTION: An electric railway system 1 includes an electric motor vehicle 2, a feeder 3 and power conversion devices a, a, b, b. The electric motor vehicle 2 includes a communication unit which transmits the current position, the current power consumption, and the current regenerative electric power of the electric motor vehicle 2 to the power conversion devices a, a, b, b. The power conversion device b(and the power conversion device b) includes a water-cooling type cooling device 4. In consideration of the control delay of the cooling device 4, the cooling start electric motor vehicle position (Ps) is set in advance, and the cooling device 4 starts the circulation of the cooling water when the electric motor vehicle 2 passes through the cooling start electric motor vehicle position (Ps). The control target value of the cooling water is decided with the target flow rate setting map indicating the correlation of the cooling water flow rate in accordance with the current power consumption (or current regenerative electric power) of the electric motor vehicle 2 and the heat quantity of the power conversion device b(or power conversion device b) at the current power consumption (or current regenerative electric power).SELECTED DRAWING: Figure 5
【課題】電鉄用電力変換装置に備えられる冷却装置を省電力化し、信頼性を向上する。【解決手段】電気車2、き電線3、電力変換装置a1、a2、b1、b2を備える電気鉄道システム1である。電気車2は、電力変換装置a1、a2、b1、b2に、電気車2の現在位置、現在消費電力、現在回生電力を伝達する通信部を備える。電力変換装置b1(及び、電力変換装置b2)は、水冷式の冷却装置4を備える。冷却装置4の制御遅れを考慮して、冷却開始電気車位置(Ps)を予め設定し、電気車2が冷却開始電気車位置(Ps)を通過したときに、冷却装置4が冷却水の循環を開始する。冷却水の制御目標値を、電気車2の現在消費電力(または、現在回生電力)と、この現在消費電力(または、現在回生電力)における電力変換装置b1(または、電力変換装置b2)の発熱量に応じた冷却水流量の相関を示す目標流量設定用マップによって決定する。【選択図】図5
COOLING WATER FLOW RATE CONTROL METHOD AND POWER CONVERSION DEVICE
冷却水流量制御方法及び電力変換装置
2018-08-30
Patent
Electronic Resource
Japanese
IPC: | B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / 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 |
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