Deadbeat controlled PWM converter.

摘要

The thesis has evaluated the suitability of Digital Deadbeat Control of the Sinusoidal Pulse Width Modulation-Voltage Source Converter (SPWM-VSC) for electric power utility applications.; The Digital Deadbeat Controlled SPWM-VSC operates as a current controller where short circuit faults are not destructive. In addition, it eliminates the L-R mode at the ac terminals of the SPWM-VSC. The thesis considers methods to immunize the control from system and parameter uncertainties. A novel closed-loop Digital Deadbeat Control has been proposed. A Phase Lock Loop (PLL) suitable for this application is developed.; Together with the PLL, the Digital Deadbeat Controlled SPWM-VSC has been shown to be capable of (1) independent control of current I_d and I_q, (2) near sinusoidal current waveforms, (3) broad operation frequency range.; Digital simulation is used in the thesis to prove the performance of the Digital Deadbeat Controlled SPWM-VSC.