ANALOG SIGNAL ACQUISITION CARD(ASAC) FOR ADC CHANNEL ENHANCEMENT IN FPGA BOARDS TO SUIT FOR POWER ELECTRONIC APPLICATIONS

摘要

Recently with the progress of programmable devices like FPGA it is easy to realize the digital controller for power electronic system. Complex control algorithms can be implemented into FPGA and the calculation time can be dramatically reduced based on parallel processing capability of FPGA. Majority of the FPGA boards available in the market has lesser number of on-board ADC channels, which limit its applications in power electronic systems. The aim of this work is to increase the number of input analog signals accessed by FPGA boards with lesser number of on-board ADC channels by integrating an Analog Signal Acquisition Card (ASAC) to the existing FPGA board along with an embedded block. ASAC consists of analog multiplexer, whose controller is embedded into the host FPGA for which ADC channels has to be enhanced. Embedded block developed inside the FPGA also segregates and stores the digital data in the different registers for further digital processing.