基于DSP的静态切换开关研究与设计

为了保证对重要负载供电的连续性,满足高新技术产品对供电质量提出的越来越严格的技术要求,介绍了一种性能完善的新型智能数字式静态开关。它主要包括两路不间断交流电源输入输出检测电路、DSP芯片控制电路、数字触发电路、LC桥式谐振换流电路,采用dq0变换对电能质量信号辨识。结合静态开关原理,着重对数字触发电路和LC谐振换流电路进行分析。通过样机测试,切换时间较短,两路电源电压以及负载电流近似不变。期间DSP芯片作出相应的状态报警显示以及与外部通信。

Design and Research of the Static Transfer Switch Based on DSP

In order to ensure continuity of critical load power supply and meet increasingly stringent technical requirements of high-tech products on the quality of power supply,this paper introduces a kind of improved performance of the new intelligent digital static switch. It mainly consists of two uninterruptible AC power input and output detection circuit, DSP chip control circuit, digital trigger circuit, LC-bridge resonant converter circuit, using dq0 transform for power quality signal identification.It focuses on the digital trigger circuit and the analysis of LC resonant converter circuit with the theory of static switch.By prototype testing,the switching time is shorter and the two power supply voltage and load current is approximately the same.During switching time,DSP makes the corresponding state alarm display and communicates with the outside.