Sensitivity Analysis of a New Linear-Rotary Permanent Magnet Generator for Wind-wave Combined Energy Conversion

Permanent magnet linear-rotary generators (PMLRGs) have attracted significant attention due to their application potentiality for a direct-drive wind-wave combined energy conversion (WWCEC) system. This paper presents a novel PMLRG which has the advantages of power balance and easy complementary control. It is more suitable for the WWCEC system than other PMLRGs proposed before. The proposed PMLRG consists of two units, linear unit and rotary unit, with a shared mover. This dual-unit design gives rise to multiple design variables and constraints, making the optimization process more complex. Assessing the sensitivity of parameters to performance is an important aspect of simplifying optimization design. Accordingly, this paper conducts the sensitivity analysis of the proposed PMLRG to lay an important foundation for subsequent optimization design in the further.