PFIU-17505

PFIU-17505

PFIU-17505

PFIU-17505

目前城市轨道交通直流牵引供电系统采用二极管整流器，电能只能从交流电网向直流牵引网单向流动。当车辆制动时，多余的再生制动能量使直流电网电压升高。

《联系人；欧先生》
《座机：0592-5709825》
《传真：0592-5917519》
《24小时热线：18030229053微信同步》
《QQ  ：2479261344》
《QQ邮箱：2479261344@qq》
传统的解决方法是设置电阻制动装置，但这将造成电能的极大浪费并带来温升等其它问题。由于轨道交通车辆起制动频繁，制动能量相当可观，若能加以合理利用必能产生良好的经济效益。

从 早的在牵引变电所设置再生能量电阻消耗装置的应用到近几年电容储能、再生电能逆变回馈设备发展，再生制动能量吸收技术在不断研制和持续改进，在国内外轨道交通线路上得到应用。再生能量电阻消耗装置，其主要缺点是只能将电能转换为热能消耗掉，造成能源浪费，而且电阻散热会导致温度升高，因此需要增加相应的通风装置，即同时增加相应的电能消耗。电容储能型，将制动能量吸收到大容量电容器组中，当供电区间有列车需要时将所储存的电能释放出去，其主要缺点是要设置体积庞大的电容器组，且电容因频繁处于充放电状态而导致使用寿命短。再生电能逆变回馈设备，是将车辆制动时产生能量经过逆变变成工频交流电与车站内电网并网，该吸收方式有利于能源的综合再利用，实现了节能，是目前日益重视并大力推广的方式。

新风光研制的再生制动能量吸收逆变装置为逆变回馈型，其回馈能量将直接用于车站内400V负载或经变压器反送至10kV//35kV电网。再生制动能量吸收逆变装置根据各个传感器检测信号，综合判断直流电网上是否有列车处于再生电制动状态，一旦确认列车处于再生制动状态并需要吸收能量时，系统启动吸收过程。逆变装置把机车刹车制动时产生的能量转换成AC400V电压，自动跟踪AC400V母线电压，并向负载供电，将再生能量消耗在用电设备上，确保机车充分有效利用电制动。在直流牵引供电系统中，再生电能吸收装置为一个子系统工程，其作用关乎系统的安全。

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PFIU-17505