FPGA-based real-time simulation of a Dual Three-Phase Induction Machine

This paper presents a digital hardware implementation of a real-time simulator for a Multiphase Drive using a Field-Programmable Gate Array (FPGA) device. The simulator was developed using Very High Speed Integrated Circuit Hardware Description Language (VHDL), with a modular and hierarchical design, making it flexible and portable. A state-space representation model suitable for FPGA implementation has been proposed for the Dual Three-Phase Induction Machine (DTPIM). The DTPIM model is computed at a fixed time-step of 10 μs. The simulator also models a 2-level 12-pulse Insulated-Gate Bipolar Transistor (IGBT) based Voltage-Source Converter (VSC), a Pulse-Width Modulation (PWM) scheme and a measurement system. Real-time simulation outputs (stator currents and rotor speed) have been validated under steady-state and transient conditions using as reference an experimental test bench based on a DTPIM of 15 kW rated power. The results demonstrate the accuracy and efficiency of the proposed digital hardware implementation.