基于Matlab的Boost变换器输出本安性能评价系统

为便于评价Boost变换器的输出本安性能，以其非爆炸性输出本安判据及最小点燃电压曲线的数值化查询为依据，建立了基于Matlab的Boost变换器输出本安性能评价系统。采用Matlab的Simulink模块搭建待评价的Boost变换器电路，通过回调函数提取变换器的关键运行参数，求取最大输出短路火花放电能量，利用能量等效原理得到等效简单电容电路的等效电容，并与临界电容进行比较，从而评估Boost变换器的输出本安性能，还可在GUI界面中显示所提取参数及本安评价结果。采用评价系统及爆炸性试验对两组典型参数对应的Boost变换器的本安性能进行判定，结果验证了所建立评价系统的可行性。

Evaluating system based on Matlab for output-intrinsic safety performance of Boost converter

To evaluate the output-intrinsic safety performance of Boost converter,considering its non-explosive output-intrinsic safety criterion and the minimum ignition voltage curve,an output-intrinsic safety performance evaluating system of Boost converter based on Matlab is established.The Simulink module in Matlab is used to set up the evaluated Boost converter circuit.The key operating parameters of the converter are extracted by the callback function.The maximum output short-circuit spark discharging energy is obtained.The equivalent-capacitance of the equivalent simple-capacitive-circuit is obtained by using the energy equivalence principle.The output-intrinsic safety performance of Boost converter can be evaluated through comparing the equivalent-capacitance with the critical capacitance.Also the extracted parameters and the evaluated results can be shown in GUI.The output-intrinsic safety performance of two typical Boost converters is evaluated using the established evaluation system and the explosive test based on the safety spark test apparatus.The results are positive to the analysis showing the feasibility of the established evaluation system.