5. FPGA-based control of a synchronous machine

Figure 8 shows the experimental set-up developed to control a wound-rotor MS synchronous machine using an FPGA target as a medium for implementing control algorithms. The FPGA target used is the Spartan 3 XCS400-PQ208 board from Xilinx. This FPGA target contains 400,000 logic gates and includes an internal oscillator delivering a 50 MHz clock frequency. The board's generic FPGA architecture consists of a matrix of 5,376 slices linked together by programmable connections.