Abstract
One of the merits of permanent magnetic gears is that they can be product compactly. However, they have the demerit that the gear can not control the magnetic force between the driving wheel (pinion) and the driven wheel (gear) while maintaining a constant gap. This report describes the design and testing of electromagnetic gears and discusses the performance characteristics of an output-efficiency test.
The test showed that the current intensity to the magnetic pole Ic is larger and the output P0 is higher. With a constant gap, the Ic is smaller and the transmitted efficiency η' is higher. One of the reasons for this is the magnitude of the magnetic flux density of the gap between pinion and gear. The value of η' is increased by decreasing the thrust load in accordance with the electromagnetic attractive force.
