The integration of renewable energy sources, such as photovoltaic and wind power plants, into electrical systems poses challenges in maintaining grid stability due to their lack of natural inertia. This paper addresses the importance of controlling power injection from these sources to mitigate frequency instability, exemplified by a recent blackout in Brazil. While conventional approaches focus on controlling DC-link voltage, this study uses full state feedback control for regulating power injected by a boost converter in photovoltaic systems. This Work in Progress paper presents modelling of the converter with power output, controller design, and computer simulation of the boost converter, demonstrating its effectiveness in power management and reduction of oscillations.

Induction motors are widely used in different industrial applications, and although they are robust, they are still susceptible to faults. Based on this, non-invasive monitoring systems have become appropriate devices for monitoring electric motors. This work aims to develop a non-invasive fault detection based on the information provided by the harmonics content of the external magnetic field of the induction motor, through the application of microcontrolled sigma-delta converter to continuously monitor the motor. It has the advantage of signal sampling has no analog filters between the transducer and the microcontroller.