Integration of Storage in the DC Link of a Full Converter-Based Distributed Wind Turbine

Abstract

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Control technique for power quality improvement of isolated wind power generation system

“…Table 7 shows voltage/current THD compression for the two cases. Gannoun et al [9] current THD was 2.99% with liner load, in [12] voltage THD was 2.78% and for current 4.06%, which means that the proposed structure can improve PQ for renewable energy systems (RESs), also according to IEEE 512-2022 voltage THD have to be less 8% and less 5% for individual harmonic and results were below this value for voltage THD.…”

“…APF was used to improve PQ for isolated WT with PMSG feeding non-liner load and compare the results with tuning inductors and capacitors (LC) filter, the proposed active power filter has been observed to be capable of minimizing the source current harmonics without requiring fine tuning of components, keeping the power factor near unity over a wide variation of load [11]. According to Poudel et al [12] a comparative study for control methods in isolated hybrid power systems was proposed, voltage fluctuations and frequency oscillations requires robust control strategies which can be achieved by choosing the proper soft computing algorithm such as genetic algorithm (GA), particle swarm (PS), mine blast algorithm, and other applications of artificial intelligence (AI). In this paper we are going to use isolated PMSG with WT to feed loads with different power factor and non-liner load, the total load will be varied during simulation time, in beginning the wind speed is fixed then the wind speed will be variable.…”

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

“…Integrating an ESS into the DC-link of a WTG offers the advantage of utilizing the existing grid-side converter (GSC), thereby reducing initial investment costs. However, this approach requires the reconfiguration of the GSC's control mode, leading to increased control complexity for the WTG [50,51]. Furthermore, as shown in Figure 1b, integrating an ESS at the output terminal of a WTG requires the connection of an extra DC-AC power converter.…”

“…Determining the right size for the battery used in DFIG power smoothing depends on various factors. These factors include the DFIG's power rating, the energy capacity of the storage device, the duration needed for power smoothing, as well as the upper and lower limits of power supply and grid frequency range [51].…”

Advanced Distributed Wind Turbine Controls Series: Part 3-Wind Energy in Grid-Connected Deployments – Microgrids, Infrastructure Resilience, and Advanced Controls Launchpad (MIRACL)

“…Such curtailed operation, even if it can provide a wider range of grid services, comes at the cost of reduced bulk power production. An integrated battery energy storage system (Poudel et al 2021) can facilitate the process by providing additional capacity that is available on demand, but it requires some additional control that interfaces with the existing turbine control system. A hybrid control approach using integrated batteries may be limited by the size (energy and power rating) of the battery and the size of the grid-side converter.…”