Measurement and Observation of Electromagnetic Transients

Power electronic systems consist of interactions between the information and energy. To implement the effective energy propagation through the control system, the related energy-flow information needs be fed back to the control unit, i.e., measurement and analysis. From the control theory point of view, measurements and observations form the feedback loop of the closed-loop control, acting as the interface between the energy flow and information flow. Since majority of power electronic systems use the digital control algorithm with the discrete control system and information flow, while the main-power circuit carries the continuous energy flow, the observation system is the interface between the continuous and discrete parts of power electronics mixture systems.