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

2021 ◽  
Vol 11 (10) ◽  
pp. 4615
Author(s):  
Andrea Floris ◽  
Mario Porru ◽  
Alfonso Damiano ◽  
Alessandro Serpi
Keyword(s):  
Control System ◽  
Energy Storage ◽  
System Design ◽  
Energy Management ◽  
Storage System ◽  
Energy Storage System ◽  
Operating Conditions ◽  
Control System Design ◽  
Flywheel Energy Storage ◽  
Flywheel Energy Storage System

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.

Research on the Flywheel Energy Storage System Applied in Green Architecture

2014 ◽  
Vol 1008-1009 ◽  
pp. 1466-1469
Author(s):  
Gui Xing Wang ◽  
Zhe Heng Zhou ◽  
Shuai Zheng ◽  
Qing Xie ◽  
Chao Ping Rao ◽  
...  
Keyword(s):  
Control System ◽  
Energy Storage ◽  
Power System ◽  
Power Grid ◽  
Storage System ◽  
Energy Storage System ◽  
Flywheel Energy Storage ◽  
Peak Period ◽  
Flywheel Energy Storage System ◽  
Green Architecture

In this research, a storage system, suitable for the power system of construction, is proposed and optimized. The storage system mainly consists of control system, converter, flywheel and motor. This system can release the pressure of the power grid during the on-peak period and supply the consumers with cheap energy. This research is going to analyze the characters of the system and then adjust its structure to the architecture.

scholarly journals Design of a Low-Loss, Low-Cost Rolling Element Bearing System for a 5 kWh/100 kW Flywheel Energy Storage System

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7195
Author(s):  
Peter Haidl ◽  
Armin Buchroithner
Keyword(s):  
Energy Storage ◽  
Low Cost ◽  
Storage System ◽  
Energy Storage System ◽  
Operating Conditions ◽  
Flywheel Energy Storage ◽  
Low Loss ◽  
Flywheel Energy Storage System ◽  
Bearing Loads ◽  
Bearing System

The bearings of a flywheel energy storage system (FESS) are critical machine elements, as they determine several important properties such as self-discharge, service life, maintenance intervals and most importantly cost. This paper describes the design of a low-cost, low-loss bearing system for a 5 kWh/100 kW FESS based on analytical, numerical and experimental methods. The special operating conditions of the FESS rotor (e.g., high rotational speeds, high rotor mass, vacuum) do not allow isolated consideration of the bearings alone, but require a systematic approach, taking into account aspects of rotor dynamics, thermal management, bearing loads and lubrication. The proposed design incorporates measures to mitigate both axial and radial bearing loads, by deploying resilient bearing seats and a lifting magnet for rotor weight compensation. As a consequence of minimized external loading, bearing kinematics also need to be considered during the design process. A generally valid, well-structured guideline for the design of such low-loss rolling bearing systems is presented and applied to the 5 kWh/100 kW FESS use case.

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