摘要
为了解决城轨车辆供电故障时车厢内通风和换气设备的供电问题,设计了一种数字化三相应急逆变电源(EPS)。首先,在分析EPS电源工作原理的基础上,采用Boost升压电路与电压型三相全桥逆变电路相结合的两级式拓扑结构。然后,基于DSP TMS320LF2407A和SVPWM控制算法实现了EPS的数字化控制,并给出了控制系统的硬件、软件设计方案。最后研制了一套2k W的ESP测试样机,测试结果表明所设计的数字化三相EPS电源能够实现稳定的三相交流输出,并且输出电压THD小于4%,转换效率达到94%,验证了本文中EPS电源设计方案的正确性。
In order to power supply the ventilation equipment of the confined compartment when urban rail vehicles power supply fails, this paper design a digital three-phase emergency inverter power supply. First, Based on analyzing the working principle of EPS, adopted two-hierarchical topology combing the Boost circuit with voltage-source three-phase full-bridge inverter circuit, Then, Based on DSP TMS320LF2407A and SVPWM control algorithm, we achieved EPS digitalized control. Moreover, we gave the hardware and software designing scheme of the control system. Finally, Development a 2kW EPS test Prototype, the results show that the digitalized three-phase EPS power supply can make stable 3-phase AC output, and the THD of output voltage less than 4%, the conversion efficiency reach 94%. Besides, the results verify the correctness of the scheme.
出处
《电气技术》
2016年第2期9-12,23,共5页
Electrical Engineering
基金
国家自然科学基金(51177110)
