Optimal Design of a Direct-Driven PM Wind Generator Aimed at Maximum AEP using Coupled FEA and Parallel Computing GA

-A superconducting synchronous generator (SCSG) can be expected to decrease the size and weight compared to conventional tidal current generators. This paper proposes an optimal design of a 2 MW class SCSG for a tidal current power generation system. The proposed optimal design of the SCSG will reduce the length of the high-temperature superconducting wire as well as the weight and volume of the SCSG. The 3D finite element method is used to analyze the magnetic field distribution. The optimized 2 MW SCSG is compared with a 2 MW conventional generator. As the optimized SCSG is more compact and lighter than a conventional generator, it will be efficiently applied to practical tidal power systems.

“…where, C p is known as the power coefficient and is essentially the percentage of power that can be extracted from the fluid current and takes into account losses due to Betz's law [5,6].…”

Section: Overview Of a Tidal Current Turbinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Design of a MW Class SCSG for a Tidal Current Power Generation System

Go¹,

Sung²,

Park³

et al. 2015

“…The ESA experiences the problem of slow convergence to the global optimum [18]. To address this problem, the KMM, which is known as an effective method for the approximation of complex and nonlinear functions [19], was combined with the ESA.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Novel Permanent Magnetic Actuator using Evolutionary Strategy Algorithm and Kriging Meta-model

Hong¹,

Ro²,

Jung³

2014

-The novel permanent magnetic actuator (PMA) and its optimal design method were proposed in this paper. The proposed PMA is referred to as the separated permanent magnetic actuator (SPMA) and significantly superior in terms of its cost and performance level over a conventional PMA. The proposed optimal design method uses the evolutionary strategy algorithm (ESA), the kriging meta-model (KMM), and the multi-step optimization. The KMM can compensate the slow convergence of the ESA. The proposed multi-step optimization process, which separates the independent variables, can decrease time and increase the reliability for the optimal design result. Briefly, the optimization time and the poor reliability of the optimum are mitigated by the proposed optimization method.

“…Because of these advantages, HTS generators are becoming an interesting solution to the need for large scale wind turbines [2][3][4]. The HTS generators can be designed with either an air-core type or iron-core type.…”

Section: Introductionmentioning

confidence: 99%

Designs of 10 MW Air-core and Iron-core HTS Wind Power Generators

Sung¹,

Park²,

Yu³

2015

-High Temperature Superconducting (HTS) synchronous generators can be designed with either an air-core type or iron-core type. The air-core type has higher efficiency under rated rotating speed and load than the iron-core type because of the iron losses which may produce much heat. However, the total length of HTS wire in the air-core type is longer than the iron-core type because the generated magnetic flux density of the air-core type is low. This paper deals with designs of 10 MW air-core and iron-core HTS wind power generators for wind turbines. Fully air-core, partially iron-core, and fully iron-core HTS generators are designed, and various stator winding methods in the three HTS generators are also considered, such as short-pitch concentrated winding, full-pitch concentrated winding, short-pitch distributed winding, and full-pitch distributed winding. These HTS generators are analyzed using a 3D finite elements method program. The analysis results of the HTS generators are discussed in detail, and the results will be effectively utilized for large-scale wind power generation systems.