| Abstract |
This paper presents the systematic use of physics-based frequency-domain techniques to design the adaptive and robust state-feedback controller for an AFE rectifiers. The proposed design approach ensures robustness and stability of the controller and the converter, independent of the size of the DC-link capacitance. This will enable the optimization of the power circuit from the perspective of efficiency, power density, cost, etc. with the widest possible design space. Furthermore, the control structure is operating-point adaptive, optimally robust and computationally efficient due to closed form controller representation. Detailed analytical development of the controller is presented in the paper along with a proof for robustness verified using simulations that support the theoretical findings. |
