Circulating Current Induced Electromagnetic Torque Generation in Electric Machines with Delta Windings

TL;DR

This paper investigates how circulating currents in delta-wound electric machines generate electromagnetic torque, providing detailed models validated by simulations and experiments to enhance understanding and design of such machines.

Contribution

It introduces comprehensive mathematical models and explanations for circulating current-induced torque in delta-wound machines, validated through simulation and experimental data.

Findings

Circulating currents significantly contribute to torque production.

The models accurately predict experimental and simulation results.

Enhanced understanding aids in improved machine design.

Abstract

This paper explains the phenomenon of current circulation and the resulting electromagnetic torque generation in electric machines employing delta windings. The description entails a systematic assessment of the electrical and magnetic behavior of the machine to develop mathematical models, followed by intuitive explanations of the derived analytical forms. The modeling is thoroughly validated through simulation and experimental results on a prototype machine.