A novel Interior Permanent Magnet Synchronous Generator system using PWM Converter with PLL circuit

The deadbeat strategy based on alpha-beta stationary frame is proposed to improve the operating performances of the sensor-less interior permanent magnet synchronous generator (IPMSG) system using the PWM converter. This method is fit for wind power generation system supplying electric power in remote areas and automotive generation system supplying electric power to various loads. The existence of interface filters and the PLL circuit is main future of this proposed system. The phase of the IPMSG terminal voltage thetas_e can be brought by the PLL circuit, so that the magnet pole position is easily calculated by adding estimated load angle delta to thetas_e. This q-axis detecting method brings both stability and accuracy to the control system as shown in the experimental results.