Energy Management and Control System Design of an Integrated Flywheel Energy Storage System for Residential Users

Abstract

This paper presents the energy management and control system design of an integrated flywheel energy storage system (FESS) for residential users. The proposed FESS is able to draw/deliver 8 kWh at 8 kW, and relies on a large-airgap surface-mounted permanent magnet synchronous machine, the inner rotor of which integrates a carbon-fiber flywheel, leading to a compact and efficient FESS. The proposed energy management system is based on four different operating modes, which are defined and can be selected in accordance with FESS speed and/or user’s preference, while FESS control system is devoted to power/current tracking at both machine- and grid-side converters. The effectiveness of the proposed solutions, as well as the overall energy performance of the proposed FESS, are verified by real-time simulations, which regard different operating conditions and/or realistic scenarios.

A Review of Flywheel Energy Storage System Technologies

“…Using modern control algorithms, 50 sets of 50 kW FESSs were configured in a 9 MW wind farm to achieve smooth control of wind power [110]. An integrated power grid model was presented to optimize the power of the flywheel and the energy rating as well as to connect to the FESS [111][112][113]. In the application of FESSs at the home scale, peak shaving, valley filling, and standby power supply functions are performed [114].…”