Electromagnetic design of a 10 MW permanent magnet synchronous generator for wind turbine application

Stuebig, Cornelia; Seibel, Axel; Schleicher, Klaus; Haberjan, Lena; Kloepzig, Markus; Ponick, Bernd

doi:10.1109/iemdc.2015.7409214

Cited by 15 publications

(9 citation statements)

References 9 publications

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“…Table 2 presents the main design constraints of the PMSG. The main constraints are independent of the proposed topology and commonly used for the design of a WECS generator [11,12].…”

Section: Preliminary Design Of the Generatormentioning

confidence: 99%

“…The output torque of a permanent magnet generator with surface magnets is give to = (21 with the electric loading, the flux density and the bore volume according to [11]. Th known geometrical machine dimensions and the thickness of the permanent magnets r sult in the bore volume and the flux density.…”

Section: Preliminary Design Of the Generatormentioning

confidence: 99%

“…Based on the trend towards higher power [10,11] introducing a segmented permanent magnet synchronous generator (PMSG) with a rated power of P N = 10 MW for direct driven wind turbines. From the DTU 10 MW reference turbine [12], the essential boundary conditions are derived.…”

Section: Introductionmentioning

confidence: 99%

“…Publications about a medium voltage insulation and permanent magnet synchronous generator are rare and usually focus on single issues [22][23][24]. Therefore, a design strategy for medium voltages generators considering mixed AC-and DC-voltage is given and compared with the low voltage design based on designs presented in [10,11,25].…”

Section: Introductionmentioning

confidence: 99%

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Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems

et al. 2021

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This paper shows a new concept to generate medium voltage (MV) in wind power application to avoid an additional transformer. Therefore, the generator must be redesigned with additional constraints and a new topology for the power rectifier system by using multiple low voltage (LV) power rectifiers connected in series and parallel to increase the DC output voltage. The combination of parallel and series connection of rectifiers is further introduced as DC-cascade. With the resulting DC-cascade, medium output voltage is achieved with low voltage rectifiers and without a bulky transformer. This approach to form a DC-cascade reduces the effort required to achieve medium DC voltage with a simple rectifier system. In this context, a suitable DC-cascade control was presented and verified with a laboratory test setup. A gearless synchronous generator, which is highly segmented so that each segment can be connected to its own power rectifier, is investigated. Due to the mixed AC and DC voltage given by the DC-cascade structure, it becomes more demanding to the design of the generator insulation, which influences the copper fill factor and the design of the cooling system. A design strategy for the overall generator design is carried out considering the new boundary conditions.

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“…Table 2 presents the main design constraints of the PMSG. The main constraints are independent of the proposed topology and commonly used for the design of a WECS generator [11,12].…”

Section: Preliminary Design Of the Generatormentioning

confidence: 99%

Section: Preliminary Design Of the Generatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems

et al. 2021

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“…Efforts to optimize iron-cored, permanent-magnet synchronous generators (PMSGs) and electrically excited synchronous generators (EESGs) at the multimegawatt levels were carried out in [17]- [25]. A large inconsistency remains in the total estimated mass of the generators at the 10-MW level, with academic designs and scaling models [21], [25]- [28] suggesting a range between 200-500 t. Lighter weight designs were proposed in [29], yet some of these are academic, still provisional, or it is not clear how the masses scale. As novel, high-energy-density permanent magnets begin to emerge in the market, newer opportunities have emerged to offset the need to scale dimensions to achieve higher input torque; therefore, it is a worthwhile exercise to revisit the upscaling potential of these generators.…”

Section: Introductionmentioning

confidence: 99%

Optimized Generator Designs for the DTU 10-MW Offshore Wind Turbine using GeneratorSE

Sethuraman

Maness

Dykes

2017

35th Wind Energy Symposium

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Compared to land-based applications, offshore wind imposes challenges for the development of next generation wind turbine generator technology. Direct-drive generators are believed to offer high availability, efficiency, and reduced operation and maintenance requirements; however, previous research suggests difficulties in scaling to several megawatts or more in size. The resulting designs are excessively large and/or massive, which are major impediments to transportation logistics, especially for offshore applications. At the same time, geared wind turbines continue to sustain offshore market growth through relatively cheaper and lightweight generators. However, reliability issues associated with mechanical components in a geared system create significant operation and maintenance costs, and these costs make up a large portion of overall system costs offshore. Thus, directdrive turbines are likely to outnumber their gear-driven counterparts for this market, and there is a need to review the costs or opportunities of building machines with different types of generators and examining their competitiveness at the sizes necessary for the next generation of offshore wind turbines. In this paper, we use GeneratorSE, the National Renewable Energy Laboratory's newly developed systems engineering generator sizing tool to estimate mass, efficiency, and the costs of different generator technologies satisfying the electromagnetic, structural, and basic thermal design requirements for application in a very large-scale offshore wind turbine such as the Technical University of Denmark's (DTU) 10-MW reference wind turbine. For the DTU reference wind turbine, we use the previously mentioned criteria to optimize a direct-drive, radial flux, permanent-magnet synchronous generator; a direct-drive electrically excited synchronous generator; a medium-speed permanent-magnet generator; and a high-speed, doubly-fed induction generator. Preliminary analysis of leveled costs of energy indicate that for large turbines, the cost of permanent magnets and reliability issues associated with brushes in electrically excited machines are the biggest deterrents for building direct-drive systems. The advantage of medium-speed permanent-magnet machines over doubly-fed induction generators is evident, yet, variability in magnet prices and solutions to address reliability issues associated with gearing and brushes can change this outlook. This suggests the need to potentially pursue fundamentally new innovations in generator designs that help avoid high capital costs but still have significant reliability related to performance.

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Distributed control of a multi-pole permanent magnet synchronous generator for wind turbine application

Seibel

Stubig

Wecker

et al. 2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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A study of permanent magnet synchronous generator, constructed as a ring-generator, is presented in this paper. With this approach a milestone in reducing weight of wind turbines in high power applications like 10 MW generators can be reached. As proof-of-concept a scaled generator with a rated power of 200 kVA will be realized in a test bench. A distributed control and an active damping of axial mechanical vibrations approach is done. In order to achieve axial damping, the generator is divided in several electrical segments

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Electromagnetic design of a 10 MW permanent magnet synchronous generator for wind turbine application

Cited by 15 publications

References 9 publications

Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems

Design of a Medium Voltage Generator with DC-Cascade for High Power Wind Energy Conversion Systems

Optimized Generator Designs for the DTU 10-MW Offshore Wind Turbine using GeneratorSE

Distributed control of a multi-pole permanent magnet synchronous generator for wind turbine application

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