Sensoreamento e controle de conversores estáticos com a utilização de FPGA

Abstract

The work introduced next looks to implement voltage and current measures on static power converters and implement a control law using VHDL and implementing it using FPGA. For case study, it was considered a elevator converter (boost). The use of this project is an alternative to the use of DSPs (Digital Signal Processor) and microcontrollers, which have lower speed of operation, and consequently less dynamic response. A current transducer is linked in the Boost converter, converting the current read in an voltage equivalent signal, which is directed to an A/D converter (analog / digital), for them can be read by the boarded platform of programmable digital circuit FPGA (Field Progammable Gate Array ). It was chosen the use of FPGA, because it has great versatility of implementation in complex digital systems and a low power consumption with high processing speed and fast update times. The system is based on the use of two PI controllers (Proportional Integral) implemented in the FPGA for the adjustment of average current and voltage in the Boost output, the values being corrected and updated according the clock of the system. Details about the project, system, development with the FPGA and the tests performed are presented throughout the development. The results obtained are presented through the MATLAB / PID Tuner® and ISE® development environments.