0278-0046 (c) 2017 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Citation information: DOI 10.1109/TIE.2017.2767521, IEEE Transactions on Industrial Electronics IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 1 Abstract—Almost all flux switching permanent magnet linear generators (FSPMLGs) and Vernier hybrid machines contain a heavy solid translator due to their design limitations for electricity generation from the oceanic waves. This paper presents the new design of a FSPMLG in which the translator weight is reduced and an additional static steel core is inserted inside the translator cavity to improve the magnetic flux linkage of the main stator. The generated voltage, current, power, efficiency, core loss, force ripples and cogging force minimization of the proposed FSPMLG are presented. From the dynamic model of the oceanic wave, it is shown that the translator with lower mass could generate electricity more effectively. The special stator and translator sets have been optimized by using the genetic algorithm before they are used in the proposed FSPMLG. To analyze the performance and verify the feasibility of the new design of FSPMLG, the finite element analysis is performed by using the commercial software package ANSYS/Ansoft. Index Terms—Linear generator, main stator, oceanic wave energy, secondary stator. I. INTRODUCTION HEinterest in harvesting electrical energy from renewable energy resources (RERs) has been growing rapidly in recent years due to the fast depletion of traditional energy resources and the negative environmental impacts of much utilization of fossil fuels [1]‒[3]. A lot of research works have been done based on solar and wind energy [4]‒[7]. At present, small hydropower plants [8] have a large development potential because of the increasing interest in RERs and distributed energy generation. As of 2015, a majority of countries have set renewable electricity targets in the range of 10‒40% to be achieved by 2030 [3]. European countries have already announced different subsidies to achieve 20% of Manuscript received February 8, 2017; revised May 14, 2017 and September 11, 2017; accepted October 18, 2017. O. Farrok is with the Department of Electrical & Electronic Engineering (EEE), Ahsanullah University of Science & Technology, Dhaka, Bangladesh, (e-mail: omarruet@gmail.com, omar.eee@aust.edu). M. R. Islam and M. R. I. Sheikh are with the Department of EEE, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh (e-mail: rabiulbd@hotmail.com, rabiul@ruet.ac.bd). Y. G. Guo and J. G. Zhu are with the Faculty of Engineering and Information Technology, University of Technology Sydney, Broadway, NSW 2007, Australia (e-mail: youguang.guo-1@uts.edu.au; jianguo.zhu@uts.edu.au). electrical power generation from the renewable energy by 2020 [9]. According to the policies and projects recently established in China, there is a target of 15% electrical power generation from RERs depending on the source of energy. One of the most promising RERs, the oceanic wave energy (OWE) has drawn tremendous attentions in the last decade because of the most distinguishing features from other RERs. China has 21.79 GW exploitable generating capacity from wave and tidal energies [10]. OWE is able to generate electricity up to 90% of the time using wave energy converters (WECs), which is around four times more than wind and solar [11]. It is more predictable and has the highest energy density among RERs. The total wave energy resource around the world is estimated 10 TW in the open sea, which is comparable to the world’s total power consumption [12]. An oscillating water column based WEC plant was modeled and controlled using two complementary control strategies to improve the conversion of wave energy into electrical energy [13]. The Wells turbine is the WEC contains a bidirectional air turbine which operates efficiently over a restricted range of air flow to produce electricity. Two generator control strategies were introduced in [14] that optimize the power take off (PTO) efficiency for low inertia turbine systems. According to the location and nature of PTO system of the WEC, they are of different types. Among various existing WECs, the oscillating devices especially point absorber is proven to be one of the most promising solutions [15], in which the wave energy is captured by floating buoys generally and then converted to linear motion which can be realized from Fig. 1. Fig. 1. The relative up and down bobbing motion of the floater coupled with linear generator to produce electricity caused by passing waves. In general, there is a floater of a point absorber, which is A Split Translator Secondary Stator Permanent Magnet Linear Generator for Oceanic Wave Energy Conversion Omar Farrok, Md. Rabiul Islam, Senior Member, IEEE, Md. Rafiqul Islam Sheikh, Member, IEEE, Youguang Guo, Senior Member, IEEE, and Jianguo Zhu, Senior Member, IEEE T