擬似参照信号反復調整法で設計した2自由度制御手法を用いた全FPGA永久磁石同期電動機速度制御系に関する研究

摘要

This dissertation proposes proportional-integral/proportional (PI-P) gain controller parameter tuning in a two-degrees-of-freedom (2DOF) control system using the fictitious reference iterative tuning (FRIT) method for permanent magnet synchronous motor (PMSM) speed control using a field-programmable gate array (FPGA) for a high-frequency SiC MOSFET inverter. The PI-P controller parameters can be tuned using the FRIT method from one-shot experimental data without using a mathematical model of the plant. FRIT method is used to tune PI-P controller parameters for both step response and disturbance response. A virtual disturbance reference method is proposed in FRIT method where the position of disturbance can be moved virtually to the position of reference so that PI-P controller parameters are designed for both step response and disturbance response at the same time and PI-P controller parameters are not designed separately. Particle swarm optimization is used for FRIT optimization. An inverter that uses a SiC MOSFET is presented to achieve high-frequency operation at up to 100 kHz using a switching pulse-width modulation (PWM) technique. As a result, a high responsivity and high stability PMSM control system is achieved, where the speed response follows the desired response characteristic for both the step response and the disturbance response. High responsivity and disturbance rejection can be achieved using the 2DOF control system. FPGA-based digital hardware control is used to maximize the switching frequency of the SiC MOSFET inverter. Finally, an experimental system is set up and experimental results are presented to prove the viability of the proposed method.