Design Improvisation for Reduced Harmonic Distortion in a Flux Pump-Integrated HTS Generator

Abstract

This paper presents a design improvisation of a flux pump-integrated 10 kW high-temperature superconducting (HTS) proof of concept generator for reduced harmonic distortion. To carry out the design improvisation, a finite element analysis (FEA) model of the 10 kW HTS generator is developed, and time-stepped magnetic transient simulations are conducted on the 2D model. The effects of stator yoke material, winding pitch factors, and load configurations on total harmonic distortion (THD) are investigated. The results showed that fibre-reinforced polymer (FRP) epoxy (G10) can be used as the stator yoke material to effectively avoid the hysteresis and eddy current losses. In addition, the study results show that for the non-conventional design of the machine, a winding pitch of 2/3 and the armature-load configuration of Star-Delta gives THD values within the standard limit defined by IEEE Standard 519-2014. The THD values indicate that the machine design configuration is suitable for the development of machines for both stand-alone and grid-connected operations, according to IEEE STD 519-2014.

Optimal Shape Design of Direct-Drive Permanent Magnet Generator for 1 kW-Class Wind Turbines

“…Fine meshes tend to increase simulation time, while coarser meshes yield poorly resolved outputs. Therefore, length-based meshes were adopted with a mesh size of 0.5 mm for the air-gap and coarse meshes with a larger size of 3 mm for the remaining regions, to ensure both computational efficiency and simulation accuracy [23].…”

“…Fine meshes tend to increase simulation time, while coarser meshes yield poorly resolved outputs. Therefore, length-based meshes were adopted with a mesh size of 0.5 mm for the air-gap and coarse meshes with a larger size of 3 mm for the remaining regions, to ensure both computational efficiency and simulation accuracy [23]. To evaluate the generator's performance, an electromagnetic analysis under no-load conditions was conducted to investigate the flux linkage and electromotive force.…”

Physical principles of development of magneto-levitation systems based on the second generation high temperature superconducting composites (Review)

“…The word " multiphysical" in this context implies an associated solution of several equations with different master variables (for example, electrodynamic model and heat model, additional consideration of mechanical properties of the system, etc.) The most popular of such modular packages are Comsol Multiphysics [96,97], ANSYS [98,99] and flexPDE [100]. These packages use mainly the finite element method or finite difference method to solve differential equations in partial derivatives.…”

Физические Принципы Создания Магнитолевитационных Систем На Основе Высокотемпературных Сверхпроводящих Композитов Второго Поколения (Обзор)

“…д.) Наиболее известные из таких модульных пакетов -это Comsol Multiphysics [96,97], ANSYS [98,99] и flexPDE [100]. Эти пакеты по большей части используют метод конечных элементов или метод конечных разностей для решения дифференциальных уравнений в частных производных.…”