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As micro-combined heat and power (micro-CHP) systems move towards mass deployment together with other kinds of distributed energy resources (DER), an increasing emphasis has been placed on how to coordinate such a large diversified DER portfolio in an efficient way by the Virtual Power Plant (VPP) like aggregators. Compared to the centralized direct control scheme, a decentralized control scheme “control-by-price”...
New regulatory requirements outlined in the European Grid Code dictate fault ride-through and reactive power support requirements for wind energy conversion systems. This paper introduces a simple emergency control scheme for DFIG-based wind turbines to comply with the grid code requirements. The proposed control design uses an enhanced phase locked loop (PLL) system to extract the synchronization...
PV inverters are an important element of the future smart grids. Not only they contribute to the active power generation as distributed generators (DGs), but also they can help grid voltage/frequency stability by generating VAR. Although the number of PV installations is rapidly growing, the effective utilization of PV inverters remains low. As even if inverters are to operate in VAR mode during night...
Selection of linear feedback to operate with plants having actuator saturation limits has long been important in control design research, with one approach represented in the work of Saberi and his co-workers. The work here seeks to tailor this “saturation-accommodating” design method to problems motivated by integrating into the grid renewable energy sources, such as wind turbines, and energy storage...
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