Totally Enclosed Self-Circulation Axial Ventilation System Design and Thermal Analysis of a 1.65-MW Direct-Drive PMSM

Tong, Wenming; Wu, Shengnan; Tang, Renyuan

doi:10.1109/tie.2018.2823698

Cited by 48 publications

(31 citation statements)

References 24 publications

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“…On a PMaSRM with a water-cooling jacket [81], the thermal design is tested experimentally using finite element analysis (FEA), computational fluid dynamics (CFD) and thermal analysis methods. Tong et al [82] tested a fully enclosed axial ventilation system (AVS) for permanent magnet synchronous machines (PMSMs) with self-circulation (TESC). Forced method of air cooling was used using external fans, such as radial flux PMSMs [83][84][85].…”

Section: Cooling Methodsmentioning

confidence: 99%

“…The cooling system was designed to ensure thorough cooling of critical parts having electrical devices, stator windings, stator heart, and the PMs. The temperature change in windings with forced air cooling versus the total volume flow rate is reported in Figure 18 [82]. Bailey et al [86] designed generators and high-speed directconnected permanent-magnet engines for the petrochemical industry.…”

Section: Cooling Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Solomon¹,

Greco²,

Masselli³

et al. 2020

ACSM

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The electric motor is the mechanism that transforms electrical energy into mechanical energy. Nowadays, electric motors are the cause of a considerable share of the use of electricity and therefore of the energy consumptions (70% in the industrial sector and 25-30% in the tertiary sector). Faced with ever-increasing energy demand and with a view to adhering to the all-over-the world imperative of adopting measures to reduce energy consumption in all the involved sectors, the use of efficiency enhanced electric motors is required. Generally, the efficiency of an electric motor depends on the type of motor, the size of the motor, the utilization factor, but also on the quality and quantity of the materials employed. Therefore, from all these aspects the need of using energy and costefficient components for developing electric motors arises. This review paper aims to draw a general framework on the methods of increasing efficiency and of reducing weight of the electric motors.

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Section: Cooling Methodsmentioning

confidence: 99%

Section: Cooling Methodsmentioning

confidence: 99%

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Solomon¹,

Greco²,

Masselli³

et al. 2020

ACSM

View full text Add to dashboard Cite

show abstract

“…Using equation 10, (11) and (15) the convective heat transfer coefficient for the outer stator to environment interface surface, axial shaft to environment interface surface and the stator teeth to rotating rotor interface surface are 23.4014, 4.9263 and 958.3188(w/m 2 .k), respectively.…”

Section: Thermal Conductive Resistancementioning

confidence: 99%

“…The stator winding insulation and permanent magnets are the most critical temperature sensitive parts of the generator. The frequent overheating not only reduces the life span of winding insulation, but also partially demagnetizes the permanent magnets of the machine [11]. A persistent overheating may lead to complete demagnetization of permanent magnets that would eventually lead to complete failure of generator [12].…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Five-Phase PMSG for Small-Scale Wind Power Application

Kumar¹,

Singh²

2018

IJMPERD

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Unlike the conventional three-phase PMSG, the five-phase PMSG has a higher power density. This paper presents a lumped parameter thermal model of Five-Phase Permanent Magnet Synchronous Generator (FP-PMSG) for small-scale Wind Energy Conversion (WEC) system. The purpose of this thermal analysis is to use it for the optimal selection of various materials required for development of FP-PMSG. Two methods, namely Finite Element Method (FEM) and Lumped Parameter Model (LPM) applied here for the thermal analysis. The FEM results are more accurate, but time consuming where as LPM provides results in less time. Eight different nodes corresponding to critical parts of the machine are considered in LPM to estimate the temperature of stator yoke, winding, magnet, rotor yoke and shaft under natural cooling. The predicted LPM results are found in good agreement with the simulated FEM, based on which specific materials are identified for various sections of FP-PMSG.

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“…It is the core component that converts the mechanical energy of the blades captured from the wind into electrical energy. The direct-drive turbine improves the transmission efficiency [3][4][5], but high loss and the ventilation system have become the key and difficult issues to be solved in the design process of low-speed and high-torque generators [6]. As market demand increases, the continuous increase of single-unit capacity makes the high-loss characteristics of low-speed and high-torque generators more prominent, and gradually becomes one of the main obstacles to the development trend of single-unit large-capacity [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ventilation Spacer for Direct-Drive Permanent Magnet Wind Generator

Zhao

Yang

et al. 2019

Energies

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As the rated capacity of the Direct-Drive Permanent Magnet Wind Generator (DDPMWG) increases, the heat produced from the generator’s inner components also increases and it becomes difficult to transfer the inner heat to the ambient. The ventilation spacer has a significant influence on the heat transfer process of DDPMWG. Thus, this paper focuses on the optimization of the ventilation spacer on the thermal field of DDPMWG. Firstly, the fluid flow and heat transfer coupled numerical calculation model is established. The physical model, composed of two half-slots and one tooth of DDPMWG, is established due to the structural symmetries to save the calculations. The sources and boundary conditions for the thermal calculations are also given. Five new ventilation spacers, compared with the original one, are proposed to investigate the thermal fields. The pressure drop and temperature field are compared to find the optimized ventilation spacer for the DDPMWG. The criteria are also presented for judging the heat transfer capacity. To validate the optimized ventilation spacer, the temperature rises of the armature winding with original and optimized ventilation spacers are measured. It proves that the armature winding’s temperature rise of the optimized ventilation spacer is about 4.7 K lower than that with the original ventilation spacer.

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Totally Enclosed Self-Circulation Axial Ventilation System Design and Thermal Analysis of a 1.65-MW Direct-Drive PMSM

Cited by 48 publications

References 24 publications

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Thermal Analysis of Five-Phase PMSG for Small-Scale Wind Power Application

Optimization of Ventilation Spacer for Direct-Drive Permanent Magnet Wind Generator

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