Two concepts are advocated for the task specification and control of mechanical manipulators: 1) coding tasks in terms of velocity fields; 2) designing controllers so that the manipulator when under feedback control, interacts in an energetically passive manner with its physical environment. Based on these two concepts, a new passive velocity field controller (PVFC) is proposed which mimics the...

Peak shaving applications provided by energy storage systems enhance the utilization of existing grid infrastructure to accommodate increased penetration renewable sources. This work investigates provision peak services from a flywheel system installed in transformer substation. A lexicographic optimization scheme is formulated define power set-points minimizing limit violations and losses. Con...

Thanks to the unique advantages such as long life cycles, high power density, minimal environmental impact, and quality fast response voltage stability, flywheel/kinetic energy storage system (FESS) is gaining attention recently. There noticeable progress in FESS, especially utility, large-scale deployment for electrical grid, renewable applications. This paper gives a review of recent developm...

In this study, a novel magnetic suspension flywheel battery with multi-function air gap is proposed. Based on the unique gap, degrees of freedom between control circuits can be independent each other, reducing coupling effect freedom. The proposed system topology inherits advantages battery. However, due to breakthrough overall in flywheel, and protection measures, has more precise design circu...

Unlike markets for storable commodities, electricity markets depend on the real-time balance of supply and demand. Although much of the present-day grid operates effectively without storage, cost-effective ways of storing electrical energy can help make the grid more efficient and reliable. We investigate the economics of two emerging electric energy storage (EES) technologies: sodium sulfur ba...

Due to low system inertia in microgrids, frequencies may vary rapidly from the nominal value, leading complete blackout of unless there is an adequate spinning reserve available for balancing supply with demand load. This issue instability microgrids under islanded operation has attracted particular attention recently. A diesel generator considered be ideal provide back-up power load along rene...

This study presents a bridge arm attached to the FESS motor’s neutral point and reconstructs mathematical model after phase-loss fault assure safe dependable functioning of motor such fault. To increase tolerance in motors with faults, 3D-SVPWM technology was utilized operate motor. The parameters zero-axis current compensation control were modified based on dual-closed-loop strategy for speed ...