Basic Research on Coordinating Design and Control of Regenerating Trains and Power Feeding systems

自20世纪60年代以来，私人铁路引入了再生列车，现在它们也受到日本铁路集团的欢迎。本研究的目的是重新评估再生列车供电系统的设计与控制。(1)再生列车直流供电系统的设计与控制。为了减少列车不能使用再生制动而导致更多能耗和制动片磨损的非受控线路情况的概率，寻求了以下有效的对策：降低变电站空载输出电压或提高系统最大允许电压，恒压控制或更好地调节变电站输出电压，回馈列车交流馈电系统的设计与控制。与所有变电站并联的直流馈电系统不同，交流馈电系统通常只由一个变电站供电，以保持fR…变电所间的环流更大。因此，在不同变电站的边界区段，进出列车的功率流是不连续的，这阻碍了制动列车的连续再生。为了应对这种情况，获得了以下有希望的方法：短时间并联切换、瞬时切换。提出了与分段系统相对应的牵引变流器的控制方案：防止主变压器不对称磁化或再生电压相位平稳变化的变流器的相位控制；(3)脉宽调制(PWM)交流回馈控制系统的电流脉动和转矩脉动抑制控制。牵引逆变器由于单相整流，输入电压脉动，产生较大的电流拍频和转矩脉动，不利于列车运行。已经成功地获得了抑制这些不利影响的肉芽波形。较少

Since 1960s regenerative trains have been introduced on private railways and now they are popular to Japan Railways Group as well. The purpose of this research is reassessment of power feeding system design and control of regenerative trains.(1) Design and Control of DC Feeding System with Regenerative Trains.In order to reduce the probability of non-receptive line condition, where trains can not use regenerative braking resulting more energy consumption and more braking pad wear, the follwing effective countermeasures have been sought: Reduction of no-load output voltage of substations or increase of maximum allowable system voltage, constant voltage control or better voltage regulation of substation output voltage, or reduction of feeder circuit resistance.(2) Design and Control of AC Feeding System with Regenerative Trains.Contrary to the dc feeding system in which all substations are connected in parallel, ac feeding system is normally fed by only one substation in order to keep fr … More om circulating current among substations. At the boundary section of different substations, power flow to or from the train is therefore discontinuous which prevents a braking train from continuous regeneration. To cope with this circumstance, the follwing promising means ahve been obtained; changeover with short time paralleling, instantaneous changeover. Changeover with short time interruption, and rheostatic section whose intermediate section is connected solely to a rheostat, corresponding to the sectioning system, control scheme of the traction converter have been developed; phase control of the converter which prevents the main transformer from being asymmetrically magnetised or where the phase of regenerating voltage changes smoothly from that of one source to another.(3) Current Beat and Torque Ripple Suppression Control of Pulse Width Modulated (PWM) AC Regenerative Trains.A novel control method of traction inverter has been developed. The traction inverter with pulsating input voltage due to single phase rectification produces muchd current beat and torque ripple which are harmful to train operation. A sophysticated waveform which suppresses these adverse effects has been successfully obtained. Less