Performance Mapping of a Linear Induction Machine for Hyperloop Applications

In the future, faster-electrified means of transportation are a necessity for more sustainable technologies. The use of Linear Induction Machines (LIM) poses an important propulsion option for high-speed transportation, particularly in hyperloop applications. Such types of high-power linear machines are complex to design and needs development without compromising too much on efficiency. The reason for the low efficiency of LIMs is high rotor losses and large airgap. Furthermore, a need to estimate the efficiency map during the runtime is necessary as high losses under constrained environments of pressure and temperature leads to significant changes in the total efficiency. Currently, LIM manufacturers do not usually provide efficiency maps with respect to an entire range of torque and speed. Thus, a design methodology and temperature-dependent efficiency maps are proposed for LIM. In accordance with the design requirements of the hyperloop pod in its entirety, a maximum speed of approximately 150km/h is achieved.