PI and Sliding Mode Control of a Multi-Input-Multi-Output Boost- Boost Converter
نویسندگان
چکیده
A proportional-integral (PI) controller and a sliding mode controller (SMC) are used to control a fourth-order Boost-Boost (BB) converter in continuous conduction mode with two input switches and two output voltages. Based on the equivalent control method, a closed-loop system is developed. The resultant PI gains have a nonlinear relationship with each other. The appropriate PI gains are obtained through the least squares method. The converter under the controller is stable and robust. The converter has voltage tracking accuracies within ±0.1 V for the first load and ±0.02 V for the second load. The maximum switching frequency is not greater than 100 KHz. Key-Words: PI, SMC, closed-loop, Boost-Boost, equivalent control method
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