Lai, J. S.Bailey, J. M.Young, R. W.Sohns, C. W.Hawsey, R. A.2022-03-032022-03-031989-01-010197-2618http://hdl.handle.net/10919/109051A high-speed (20,000 r/min) axial-gap permanent magnet (PM) synchronous motor constructed and controlled using a novel algorithm is described. An optimization algorithm using the Newton-Raphson method is proposed to solve the maximum torque/amp problem for salient-type PM motors. The optimum voltage and torque angle for different speeds are further derived from optimum dq-axes currents so that decoupled control can be applied to a six-step inverter. The complete drive system can be implemented using open-loop optimum voltage and torque angle trajectories or closed-loop control with one variable controlled by a lookup table and the other variable controlled by a closed-loop controller. The open-loop and closed-loop control systems are simulated. Although torque pulsation cannot be avoided with a six-step inverter, acceleration is quite smooth due to high load inertia.Pages 767-7726 page(s)application/pdfenPublic DomainEnergy & FuelsEngineering, Electrical & ElectronicEngineering, MechanicalErgonomicsMeteorology & Atmospheric SciencesEngineeringConference proceeding2022-03-03https://doi.org/10.1109/IAS.1989.96734pt 1Lai, Jih [0000-0003-2315-8460]