Abstract
	In recent years the proliferation of electronic equipment connected to the power grid has led to the emergence of international standards, such as EN 61000-3-2. These standards regulate low frequency harmonic distortion that such equipment may introduce to the grid. In this context, high power factor rectifiers are one of the most appropriate solutions to reduce harmonic distortion in the current drawn from the mains. When no power is returned to the grid, single phase high power factor rectifiers are typically implemented by the cascade association of a passive rectifier (diodes) and a dc-dc boost converter. A current control loop keeps the distortion of input current close to zero, while the reference signal is obtained from the output voltage control loop. This last loop keeps  the output voltage close to a certain reference value.
	The most documented problem in the related literature is the poor dynamic response of the voltage control loop, as that loop must be extremely slow in order to not produce any distortion in the input current. In this thesis, Robust Model Following (RMF) and Load Current Injection (LI2) techniques are applied to the control loop design of the output voltage. With these techniques the closed loop output impedance of the converter is significantly reduced without the need to increase the speed of the voltage control loop. As a result, the converter dynamics improve significantly without distorting the input current. An additional advantage of the proposed techniques is their low cost, which makes them a very interesting alternative for implementation in industrial equipment.