Analysis of various energy storage systems for variable speed wind turbines

Abstract

During the high penetration of wind power, wind turbines can affect power quality directly due to an unstable and intermittency source. Voltage fluctuations, harmonics, and voltage drops might be factors in this environment. Energy storage systems (ESSs) with variable speed wind turbines (VSWTs) as a permanent magnetic synchronous generator (PMSG) and a doubly fed induction generator (DFIG) could be a solution to improve the power quality from the "variability" of wind power. This chapter investigates the proposed system, which comprises a hybrid ESS for the VSWT. It analyzes the ability of various ESSs (B, SC, and EDLC) based on VSWTs with various ESSs for power quality in terms of average THD (%) specified in reference to IEEE std-519-1992 and IEC 61400-21-Ed.2.0. In addition, this chapter investigates the DFIG with hybrid energy storage systems (Li ion battery and super capacitor ESS) for the economic evaluation in terms of payback time. The simulation results have been verified by a power system computer-aided design/electromagnetic transients direct current (PSCAD/EMTDC) to demonstrate the system performance under different scenarios.

Analysis of Various Energy Storage Systems for Variable Speed Wind Turbines

“…ESS has numerous applications including portable devices, smart grid, building integration, energy efficiency, transport vehicles, and stationary renewable energy resources [27]. In this chapter, only three different distributed ESSs for renewable generation systems were introduced as battery, super capacitor, and electrical dual layer capacitor [23]. Table 2 summarizes the characteristics of three different ESSs.…”

“…Modeling and control of energy storage systems Figure 2 shows that each E-ES, for this study, consists of an energy source bank, an inductance and a two-quadrant DC/DC converter connected to the DC link. It also describes how the controller of the DC/DC buck-boost mode generates the gate signals for gate 1 and gate 2 [23].…”