Inductance analysis of an IPM motor using JMAG

An IPM motor can use both magnet torque and reluctance torque, so by appropriately choosing the current phase it is possible to improve efficiency over a broad spectrum of drive range. It is a motor type that is often used in equipment with a wide operational range, from air compressors in air conditioners to motors that power vehicles. In many cases, strong rare earth magnets are used to increase output density, so it is necessary to have an IPM motor design that accounts for magnetic circuit saturation. So need to investigate variations in inductance characteristics due to current phase, geometry, or the material’s nonlinear magnetic properties.