基于嵌入开关准Z源直流变换器的井下供电备用电源

Standby Power Supply of Mining Underground Power System Based on Embedded-Switch Quasi-Z-source DC-DC Converter

提出一种新型准Z源直流升压变换器,在煤矿井下蓄电池机车的蓄电池组发生放电损坏等故障后.可快速安全地为井下设备提供电源。该变换器与准Z源变换器相比具有较低的电容器电压应力、较高的电压增益。分析了电路的工作原理,通过MATLAB仿真和实验验证,理论分析与实验结果相吻合,验证了该直流变换器拓扑的可行性和实用性。

After the breakdown of the storage,battery within the battery electric locomotive,presents a kind of DC/DC boost converter topology to provide safe power supply for underground devices.This topology has lower capacitor voltage,higher voltage gain than the quasi-Z-source converter.The working principle of the proposed converter is analyzed.The 'simulation results by MATLAB are in good agreement with the experimental results,which verifies the feasibility and practicability of the DC/DC boost converter topology.