动车组紧急逆变电源设计

2017-10-17唐朝，谢明

电子科技 2017年10期

关键词：检测设计

唐朝，谢明

(上海理工大学光电信息与计算机工程学院，上海 200082)

动车组紧急逆变电源设计

唐朝，谢明

(上海理工大学光电信息与计算机工程学院，上海 200082)

紧急逆变电源是动车组突发停电状况下实现电能转换的重要设备，然而传统逆变电源在突加大功率感性负载情况下输出电压不稳定、三相输出电压不平衡度大。文中采用了基于STM32控制的Boost升压和IPM逆变的设计方法。详细叙述了主电路原理，设计了保护电路和检测电路。试验样机测得的波形及数据显示此紧急逆变电源带感性负载时稳定输出230 V、30 Hz，三相输出电压不平衡度<1%，试验证明样机工作可靠、满足设计要求。

逆变电源；STM32； Boost；IPM逆变

AbstractThe emergency inverter power supply is important device for power conversion when bullet train power cut suddenly. However, the output voltage was unstable, the voltage of three-phase was unbalanced seriously of traditional inverter power when High-power inductive load was accessed in. Boost circuit and IPM inverter circuit based on STM32’s control was designed in the paper. The theory of main circuit was introduced，new protection circuit and detection circuit was designed. The waveform and data of the experimental prototype was tested shows this emergency inverter power can output 230VAC, 30 Hz stably with rated inductive load, three-phase output voltage unbalance less than 1%. Experiment results showed that the emergency inverter power supply worked reliably, met the design requirements.

Keywordsinverter power supply;STM32;Boost;IPM inverter

随着中国铁路的高速发展，目前全国有约18 000 km的客运专线和城际铁路投入运营[1]，在这些线路上行驶着数量庞大的动车组，考虑到动车组发生紧急停电停车等突发状况时车内通风的要求，必须保证车内紧急通风系统在此类突发故障中做到应急供电，本文设计了紧急逆变电源。

考虑动车组运行环境的特殊要求，如震动大、工作环境温度范围宽、突加非线性负载等，因此对紧急逆变电源的抗震性、运行安全可靠性提出了更高的要求[2]。考虑逆变电源输入电压变化范围宽及突加非线性负载，提出了一种结合直流升压稳定输出与逆变实时反馈PID调节的控制方案，设计的样机满足动车组紧急停电情况下通风系统供电要求，运行稳定。