The topology of the direct-drive wind power generation systems connected to the weak power grid is illustrated in Fig. 1, including the wind turbine, Permanent Magnet Synchronous Generator (PMSG), machine-side converter (MSC), DC capacitor, grid-side converter (GSC), filter inductors, and the AC power grid.
experimental results are given to illustrate the performance of the actual system.Compared to geared drive wind power generation system, direct-drive wind power generation system has the advantages of simplified drive train and increased energy yield
aring new direct-drive generator for wind turbines has been proposed in . The fundamental idea of the machine - the NewGen (see Fig. 4-2-7) is to reduce the stiffness demand by removing the load path fro sta or by putting the bearing
ical structures of direct-drive wind generators 3.1.1. Conventional StructureTraditionally the rotor of generator is connected to a shaft mounted on bearings that enable the rotation in the stator as shown in Fig. 23 The structure of Fig. 24(a) is widely used on the wi d turbine market by Enercon GmbH, whose world market share was abo
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This study introduces a constrained many-objective optimization approach for the optimal design of 20 MW direct drive (DD) permanent magnet synchronous generators (PMSGs). Designing a …
In response to the development needs of high proportion wind power bases in northwest China, northern Shandong and other regions, as well as the strong fluctuation …
The simulation results have shown that the number of direct-drive wind turbines operating, the connection impedance between the …
In this context, a simplified model is normally used with the trade-off in lower accuracy. As a direct-drive permanent magnet synchronous wind power generation system (D …
Direct-drive wind turbine is an important type of wind power technology. In recent years, it has also become the development trend of …
Wind energy is the most promising renewable energy, and it plays a crucial role in sustainable development. This paper''s research content is the converter control strategy of a …
In [4], the authors compared five diferent generator systems, namely doubly-fed induction with three stages (DFIG3G) and with single-stage gear-box (DFIG1G), permanent magnet …
The wind power generation system connected to the grid plays the role of the changing wind energy into mechanical energy by wind turbines, and then converts mechanical energy into …
To enhance the unified equivalent modeling for studying the fault characteristics of grid-connected systems, this paper presents a dynamic equivalent model of a wind power grid …
The interaction between wind power generation systems and weak power grids can easily lead to system instability, characterized by multiple-time-scales dynamics. To …
This study introduces a constrained many-objective optimization approach for the optimal design of 20 MW direct drive (DD) permanent magnet …
Consequently, an increasing number of grid codes require active participation of renewable energy sources in the system’s …
In this context, a simplified model is normally used with the trade-off in lower accuracy. As a direct-drive permanent magnet synchronous wind power generation system (D …
Consequently, an increasing number of grid codes require active participation of renewable energy sources in the system’s frequency regulation (FR). Direct-drive permanent …
Different type of generators are discussed and design aspects of permanent magnet machines also have been highlighted like mechanical structure, thermal behaviour and …
The direct-drive permanent magnet synchronous wind power generation system (D-PMSG) has progressed with a low failure rate, high reliability, and high efficiency so that its share of the …
A research on optimal design of a 5 MW Double-Stator Single-Rotor (DSSR) PMSG for offshore direct drive wind turbine has been carried out in [23]. The DSSR topology is meant …
Download Citation | Mechanism and Characteristics of Subsynchronous Oscillation in Direct-Drive Wind Power Generation System Based on Input-Admittance Analysis | The …
The utilization of wind energy can alleviate the problems of fossil energy shortage and environmental pollution. As the core unit of wind power generation systems, improving the …
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