Energy Management and Power Control of a Hybrid Active Wind Generator for Distributed Power Generation and Grid Integration

Abstract

Classical wind energy conversion systems are usually passive generators. The generated power does not depend on the grid requirement but entirely on the fluctuant wind condition. A dc-coupled wind/hydrogen/supercapacitor hybrid power system is studied in this paper. The purpose of the control system is to coordinate these different sources, particularly their power exchange, in order to make controllable the generated power. As a result, an active wind generator can be built to provide some ancillary services to the grid. The control system should be adapted to integrate the power management strategies. Two power management strategies are presented and compared experimentally. We found that the "source-following" strategy has better performances on the grid power regulation than the "grid-following" strategy.Index Terms-Distributed power, energy management, hybrid power system (HPS), power control, wind generator (WG).

Multitier decentralized control scheme using energy storage unit and load management in inverter-based AC microgrids

“…Hence, the system will be forced to use ESUs [25] as a hydroelectricity-wind-pumped storage station [26] and fuel cells-hydrogen-pumped storage station [24] on the large scale and lead-acid battery on the small scale.…”

Control of Hybrid System of Wind/Hydrogen/Fuel Cell/Supercapacitor

“…Applying coordinated control to hybrid system consisted of PV, wind turbine, electrolyzer and fuel cell is to achieve power balance for power generation system, energy storage system and dynamic load [7]. The paper proposes a control strategy of grid-connected hybrid system, which ensures that the fuel cell can supply the power shortage for the hybrid system and electrolyzer can consume surplus power of hybrid system [8][9].…”

Development of Control Structure for Hybrid Wind Generators with Active Power Capability

“…Also, for good interaction between different sources, good power balancing should be considered. There are some researches about power balancing strategy and control algorithm for hybrid energy systems [10][11][12][13][14][15][16] and active power filters [17][18][19] that present some techniques. In this paper, a hierarchical control structure was proposed for hybrid energy systems.…”

“…Also, a high performance power management strategy is used for the system. With this power balancing strategy, the system could easily provide ancillary services to grid and acting as an APF [10]. This paper is organized as follows.…”