Dynamic model and control of a wind-turbine generator with energy storage

Abstract

This study presents a wind conversion system with integrated energy storage and dispatchable output power. The energy storage acts as an auxiliary source to mitigate the wind power fluctuations and to follow the load demand changes. A control strategy is developed which manages the flow of power among the wind-turbine generator, the energy storage and the grid. A dynamic model for the overall wind conversion system is developed. A controller is designed systematically for the wind conversion system based on the developed dynamic model. Performance of the system in various modes of operation is evaluated based on digital time-domain simulations in the power simulink (PSIM) software environment.

Grid-integrated permanent magnet synchronous generator based wind energy conversion systems: A technology review

“…Wind is a free and abundant source of energy and hence, is attractive in terms of the cost and energy security [200]. However, wind is intermittent in nature and due to wind speed variations, the output power of WT fluctuates which may cause grid-frequency deviations.…”

A review of energy storage technologies for marine current energy systems

“…Supercapacitors for Doubly-fed Induction Generator (DFIG) and Permanent Magnet Synchronous Generator (PMSG) wind turbine applications are discussed in [23,24] and [25] respectively. References [26,27] and [39] only use battery as the ESS, the main objection is to balance the difference between the turbine-produced power and the load (or grid) required power. If high-power fluctuations have to be smoothed, high-power density devices such as supercapacitors are therefore required.…”

Robust backstepping control of variable speed wind turbines with permanent magnet synchronous generators

“…The mathematical equations describing the dynamics of a variable speed wind turbine with permanent magnet sychronous generator in d − q coordinates is assumed to have the following form [8] …”