ELECTRIC RAILWAY ACTIVE FILTER, CONTROL METHOD THEREOF, AND POWER CONVERSION DEVICE AND RAILWAY VEHICLE EQUIPPED WITH THE SAME

• Main Authors: ITO TOMOMICHI, AKIYAMA SATORU
• Format: Patent
• Language: English; Japanese
• Published: 10.09.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

To provide a power conversion device equipped with an electric railway active filter that reduces an amount of noise current flowing out to a feeder wire while avoiding the risk of disturbing a communication signal for vehicle control.SOLUTION: An electric railway active filter includes; a transformer equipped with a smoothing capacitor and connected to an input side of an inverter that drives a vehicle acceleration/deceleration motor; an arm circuit composed of a series circuit of a semiconductor switching elements; a harmonic filter circuit connected in series between the arm circuit and the transformer; and a first current sensor for detecting first current flowing through between the harmonic filter circuit and the transformer. A switching signal of the arm circuit is controlled based on a detection signal of the first current.SELECTED DRAWING: Figure 1 【課題】車両制御用通信信号へ擾乱を与える虞を回避しつつ、き電線に流出するノイズ電流の量を低減する電鉄用アクティブフィルタ備えた電力変換装置を提供する。【解決手段】電鉄用アクティブフィルタとして、平滑コンデンサを備え車両加減速用モータを駆動するインバータの入力側に接続される変圧器と、半導体スイッチング素子の直列回路で構成されるアーム回路と、アーム回路と変圧器との間に直列に接続される高調波フィルタ回路と、記高調波フィルタ回路と変圧器との間を通電する第１の電流を検出する第１の電流センサとを備え、第１の電流の検出信号に基づいてアーム回路のスイッチング信号を制御する。【選択図】図１