Selaus tekijän mukaan kokoelmassa "Pyrhönen, Juha"Tieteelliset julkaisut
Aineistot 1-20 / 44
-
Advanced Uncertainty Calculation Method for Converter-Fed Motor Loss Determining
(IEEE, 05.08.2019)There is only a single practical method to determine the losses of converted-fed electrical machines. The method is based on mechanical output and electrical input power measurements. When this method is used, the loss ... -
Analytical Evaluation of High-Efficiency Induction Motor Losses
(IEEE, 05.08.2019)An analytical motor design-based approach is used to evaluate the major loss components of a premium-efficiency (IE3)four-pole squirrel-cage induction machine. In the analytical approach, the geometry of the machine and ... -
Comparison of Commercial and Open-Source FEM Software: A Case Study
(IEEE, 11.08.2020)5 kW high-efficiency induction motor is analyzed using 2D open-source platform and the results are compared with commercial software and measurements. The importance of equivalent circuit parameters in 2D analyses is ... -
Comparison of Synchronous Reluctance Motors and Permanent Magnet Synchronous Motors with Direct Liquid Cooling Arrangement
(IEEE, 06.09.2023)A comparison of Synchronous Reluctance Motors and Permanent Magnet Synchronous Motors with a Direct Liquid Cooling system is given. Both solutions have been analyzed, designed, and optimized considering the same constraints ... -
Comparison of the Performance of Different Asynchronous Solid-Rotor Constructions in a Megawatt-Range High-Speed Induction Motor
(IEEE, 05.08.2019)High-speed electrical machines have their advantages, such as higher power density than in traditional electrical machines, and disadvantages, such as very demanding and tailored design and manufacturing process. The ... -
Cost Minimization of a Permanent Magnet Eddy Current Brake by Multiobjective Particle Swarm Optimization Based on Nonlinear Reluctance Network Modeling
(IEEE, 22.11.2021)Design optimization of a permanent magnet eddy current brake (PM-ECB) is performed by applying multiobjective particle swarm optimization (MO-PSO) for cost minimization. A previously designed and patented PM-ECB is used ... -
Design and Analysis of a Self-Holding Three-Position Electric Tubular Actuator
(IEEE, 07.08.2020)A self-holding three-position electric tubular actuator (SHTPETA) is described in the paper. The proposed linear actuator can be applied in a clutch system, where it is necessary to change certain mover positions over time. ... -
Design and Drive-Cycle Based Analysis of Direct-Driven Permanent Magnet Synchronous Machine for a Small Urban Use Electric Vehicle
(2014)A direct-driven permanent magnet synchronous machine for a small urban use electric vehicle is presented. The measured performance of the machine at the test bench as well as the performance over the modified New European ... -
Design and Manufacturing of a Modular Low-Voltage Multi-Megawatt High-Speed Solid-Rotor Induction Motor
(IEEE, 26.05.2021)High-speed solid-rotor induction machines (HSIMs) are popular within high-speed applications because of their high rotor structural integrity and their fairly well-established manufacturing process guaranteeing high quality ... -
Design and verification of a hermetic high-speed turbogenerator concept for biomass and waste heat recovery applications
(Elsevier, 11.09.2020)Many waste heat recovery and biomass applications offer opportunities for small-scale steam turbines to produce electricity and to improve systems’ energy efficiency. However, the currently used axial turbine-based technology ... -
Design of a Low-Power Direct-on-Line Synchronous Reluctance Motor Based on the Modified Natural Flux Line Curve Approach
(IEEE, 01.09.2021)A direct-on-line synchronous reluctance motor (DOLSynRM) with a rotor topology defined by the natural flux line curve approach is studied as an alternative to an induction motor (IM) using a 1.5 kW, 50 Hz synchronous ... -
Design of a Traction Motor With Tooth-Coil Windings and Embedded Magnets
(IEEE, 2014)Traction motor design significantly differs from industrial machine design. The starting point is the load cycle instead of the steady-state rated operation point. The speed of the motor varies from zero to very high speeds. ... -
Determination of High-Frequency Harmonic Power in Converter-Fed Motors
(IEEE, 13.10.2022)This paper focuses on usage of frequency domain power analysis on harmonic power extraction in converter-fed motor measurements. Synchronous generator and frequency converter supplies are compared in 16 operating points ... -
Direct Liquid Cooling Method Verified With a Permanent-Magnet Traction Motor in a Bus
(IEEE, 01.04.2019)Direct liquid cooling (DLC) of electrical machine windings is a clearly effectual cooling method for high-torque and high-power-density applications needed, especially, in heavy vehicles. Usually, in electric vehicles, the ... -
Direct-Driven Interior Magnet Permanent Magnet Synchronous Motors for a Full Electric Sports Car
(2014)The design process of direct-driven permanent magnet synchronous machines (PMSMs) for a full electric 4 ´ 4 sports car is presented. The rotor structure of the machine consists of two permanent magnet layers embedded inside ... -
Energy Efficiency Analysis of Electric Vehicle System Components
(IEEE, 02.01.2024)There are several figures used to promote the energy efficiency of battery electric vehicles (BEVs). A critical analysis of the energy consumption of BEV systems is presented here. A typical approach to estimate the ... -
Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature
(IEEE, 2014)The standard squirrel-cage induction machine has nearly reached its maximum efficiency. In order to further increase the energy efficiency of electrical machines, the use of permanent magnets in combination with the robust ... -
Experimental Investigation of a 75 kW Induction Motor Drive System Losses and Efficiency
(IEEE, 09.12.2019)The frequency converter driven IM can be used as a reference for the efficiency level of a drive system. In here, the losses and efficiency of a 75 kW IE3 -rated modern squirrel-cage induction motor are investigated ... -
Heat-transfer improvements in an axial-flux permanent-magnet synchronous machine
(Pergamon Press, 2014)Axial-flux machines tend to have cooling difficulties since it is difficult to arrange continuous heat path between the stator stack and the frame. One important reason for this is that no shrink fitting of the stator is ...
