Mathematical Model, Design, and Cost Analysis of a Linear Electrical Generator

The simplified mathematical model of a flux switching linear electrical generator for wave power extraction is presented in this chapter. Then design and simulation of a double-sided flat flux switching linear electrical generator (FSLEG) is presented. Characteristics of the FSLEG for harvesting oceanic wave energy are analyzed. To enhance the performance of FSLEG, a special Kool Mµ powder core with N46SH permanent magnet is applied. It is found from the simulation that because of using Kool Mµ powder core, core loss is minimized. On the other hand, power generation is reduced. To increase power generation, high graded N46SH material is applied again. Thus, with proper combination of Kool Mµ and N46SH, both parameters are improved, i.e., increase in electrical power generation and decrease in core loss. Cost analysis is provided for the active material, i.e., copper, permanent magnet, and magnetic core. Then the tentative material cost of the FSLEG is calculated. As application of Kool Mµ powder core to the linear electrical generator is relatively new, future recommendation is listed at the end of this chapter.