Combining magnetic field modulation technology with a linear PM generator, an FMLPMG with a self-accelerating effect is proposed in this paper. The FMLPMG can be incorporated into direct-drive WEC systems, which can eliminate the intermediate transmission mechanism and maintain the advantage of high efficiency
Direct-drive permanent magnet (PM) generators have become a strong contender in medium and large rating wind energy conversion systems as they not only provide higher efficiency and annual energy production, but also reduce the operational and maintenance cost. PM generators with nonoverlap single-layer windings provide a cost
There is a market for small, efficient and cost-effective wind generators for mini-grid and remote power systems. Direct-drive permanent magnet generators have become very attractive for this application. This paper describes the improvements achieved in an outer-rotor direct-drive permanent magnet generator by using finite element analysis and
This study presents a structural analysis and optimization for the lightweight design of a buoyant rotor-type permanent magnet (BRPM) generator, which was first presented in Bang (2010), and compares its structural performance to that of a conventional generator with a spoke arm-type rotor and stator. The main benefit of a
UAV is an important development direction. As the fundament of the power system, the performance. of the direct-drive permanent magnet generator has seriously af fected the flight and working
The permanent magnet linear generator is widely applied in the direct-drive wave energy converter (DD-WEC) because of its high power density. In this paper, a novel tubular permanent magnet linear
Permanent Magnet Synchronous Generator (PMSG) and Doubly Fed Induction Generator (DFIG) are most commonly used in wind turbine. Optimization of designing a direct-drive Halbach PMSG by using Particle Swarm Optimization (PSO) was introduced in [12]. In this article, there are five variables related to the construction of a
Abstract: This chapter gives an overview of the various direct drive generator technologies for wind turbines and focuses on the different permanent magnet generator topologies. Their advanced characteristics have drawn a number of manufacturers towards this system which now represents 20% of the sold wind turbines
Zavvos et al. [6,7] used an analytical approach to minimize the mass of a permanent magnet direct-drive generator by optimizing both the electromagnetic and structural dimension parameters
Abstract: Direct-drive permanent magnet (PM) generators have become a strong contender in medium and large rating wind energy conversion systems as they not only provide higher efficiency and annual energy production, but also reduce the operational and maintenance cost. PM generators with nonoverlap single-layer windings provide a
In this study, the optimal shape design of a direct-drive permanent magnet generator for 1 kW-class wind turbines was conducted while considering power
1 INTRODUCTION. Nowadays, direct-drive permanent magnet synchronous generators (DDPMSGs) are gaining more and more attention in the field of wind power, owing to the merits of simple structure, high efficiency and high reliability [1-3].However, low-speed generators directly coupled to wind turbines have sufficiently high
Control. 2019. TLDR. A model-based control system for a wind energy conversion system (WECS) using a direct driven permanent magnet synchronous generator (D-PMSG) and a maximum power point tracking algorithm is further developed to ensure the maximum power is captured from a wind turbine. Expand.
Wind power generation has the advantages of high conversion efficiency, high reliability, and flexible control. The widely used grid-connected wind power generation system is mostly adopted asynchronous generator, which has low efficiency. Therefore, A direct-wind power generation system based on a permanent magnet synchronous generator is proposed
The permanent magnet linear generator is widely applied in the direct-drive wave energy converter (DD-WEC) because of its high power density. In this paper, a novel tubular permanent magnet linear generator, which consists of multilayer and interior permanent magnets (MI-TLPMGs), is presented for DD-WEC, which improves the
Li H, Chen Z (2007) "Optimal direct-drive permanent magnet wind generator systems for different rated wind speeds." In: 2007 European conference on power electronics and applications, EPE. He Q, Wang Q (2012) "Optimal design of low-speed permanent magnet generator for wind turbine application." In: Asia-Pacific power and
This paper describes the improvements achieved in an outer-rotor direct-drive permanent magnet generator by using finite element analysis and optimisation techniques. The
Combining magnetic field modulation technology with a linear PM generator, an FMLPMG with a self-accelerating effect is proposed in this paper. The FMLPMG can be incorporated into direct-drive WEC
PERMANENT MAGNET GENERATORS – SYNCHRONOUS – MULTI-POLE – LOW/ MEDIUM SPEEDS – 3 PHASE. Main application: direct-drive low-speed wind turbines (no gearbox), or medium-speed turbines with
In a direct drive application the turbine and the generator are integrated to form a compact and structurally integrated unit. The design gives free access to all parts for easy installation and maintenance.
1 INTRODUCTION. In the last decade, the direct-drive permeant magnet synchronous generator (D-PMSG) has been used in many industries, especially, for renewable energy applications [1-3], aircraft [4, 5], and propulsion systems [].Normally, the stator resistance, d-q axis inductance, and permeant magnet flux linkage in the model of
Therefore, this paper studies the application of magnetic flux modulation in fractional frequency and high-power direct-drive wind
The particulars regarding the electro-magnetic and mechanical designs of this direct-drive permanent-magnet wind turbine generator have been published in [4, 13-16]. This paper provides basic design equations to implement DLC using stator copper windings fashioned from copper conductors with internal coaxial cooling conduits.
This study introduces a constrained many-objective optimization approach for the optimal design of 20 MW direct drive (DD) permanent magnet synchronous generators
The conventional linear permanent magnet generator (CLPMG) for direct-drive wave energy conversion (WEC) has experienced many drawbacks that are difficult to overcome such as low power density and bulky system volume. To improve power density, this paper proposes a linear magnetic-geared interior permanent magnet
Types of Permanent Magnet Generators. There are different types of permanent magnet generators designed to suit various needs. These include: Direct
Direct drive permanent magnet generators(PMGs) are increasingly capturing the global wind market in large onshore and offshore applications. The aim of this paper is to
In a transition of the power system migrating into higher renewables and higher power electronics, wind power generation has been gradually replacing the traditional thermal power plant and becoming one of the main power sources in the modern power system [].The direct-drive permanent magnet synchronous wind power generation
Permanent Magnet Generators are expected to continue to increase market share from 17% in 2011 to nearly 40% by 2015. certain rotor designs in permanent magnet, direct-drive generators impose significant heat-transfer challenges that the thermal-management system must overcome, adding a degree of complexity to the
2.1. Introduction. Direct drive generator systems for renewable energy conversion have been introduced in the first chapter. This second chapter focuses on the electromagnetic design of direct drive generators, There are a number of important design choices that have to be made, and the engineer then needs to decide which methods
Wind turbines are getting larger. Their rated power capacities are moving from the 3 MW range to 6 MW and beyond. As a result, their size and mass, which grow rapidly with power capacity, is becoming a problem in terms of capital cost, logistics and assembly. Moreover, there is a move to offshore installations. Offshore wind turbines
Direct-drive permanent magnet generators are becoming an attractive option for highly efficient small-scale wind turbines due to their high-power density and size reduction capabilities. In this study, the optimal shape design of a direct-drive permanent magnet generator for 1 kW-class wind turbines was conducted while considering power
Direct-drive permanent magnet (PM) generators have become a strong contender in medium and large rating wind energy conversion systems as they not only
This paper presents a general technique to analyze thermal behavior of direct-drive permanent magnet (DDPM) wind generator. Both lumped parameter network (LPN) and finite element method (FEM) are used in this technique to predict the temperature distribution of a 2 MW DDPM wind generator. This technique is then validated after
The Lagerwey direct drive permanent magnet generator outlines a new era for wind turbine integration. The torque density of our latest generator is very high (compared to