International Journal of Power Electronics and Drive System (IJPEDS) Vol. 9, No. 1, March 2018, pp. 457~464 ISSN: 2088-8694, DOI: 10.11591/ijpeds.v9.i1.pp457-464  457 Journal homepage: http://iaescore.com/journals/index.php/IJPEDS Design and Analysis of In-Wheel Double Stator Slotted Rotor BLDC Motor for Electric Bicycle Application S. Farina 1 , R.N. Firdaus 2 , F. Azhar 3 , M. Azri 4 , M. S. Ahmad 5 , R. Suhairi 6 , A. Jidin 7 , T. Sutikno 8 1,2,3,4,5,6,7 Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia. 1,2,3,4,5,6,7 Electrical Machine Design, Power Electronics and Drives Research Group, CeRIA, UTeM. 6 Electrical Technology Section, Universiti Kuala Lumpur-British Malaysian Institute, Malaysia. 8 Universitas Ahmad Dahlan, Indonesia. Article Info ABSTRACT Article history: Received Sep 7, 2017 Revised Oct 31, 2017 Accepted Dec 21, 2017 This paper discusses about design and analysis of double stator slotted rotor (DSSR) BLDC motor for electric bicycle application. Usually single stator (SS) BLDC motor is used in an electric bicycle. This type of motor has low performance and need to be charged regularly. The objective of this research is to design and analysis DSSR motor that have high torque. At starts, design specification for the electric bicycle is calculated. Next, design process for DSSR is carried out by using the desired parameter. Lastly, analysis for double stator slotted rotor is simulated using FEM. Result for average back emf, average inductance, inner stator flux density, outer stator flux density, average torque and estimate torque constant is obtained. Result for average torque from FEM archieve the requirement of motor torque for DSSR design where the maximum average torque is 16.2 Nm. This research will give benefit to mankind and society in term of environment protection and energy consumption. Keyword: Double stator BLDC motor Copyright © 2018 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: R.N. Firdaus, Faculty of Electrical Engineering, Universiti Teknikal Malaysia, Melaka, Malaysia Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia. Email: norfirdaus@utem.edu.my 1. INTRODUCTION Recently, the accelerated development in the number of vehicle in use has seriously impacted on worldwide energy consumption and environment. Compared to the internal combustion engine vehicles, electric vehicles contribute significantly to the energy saving and environmental protection, and on account of these benefits, they constitute today’s direction for the automotive industry [1]. With growing concerns on environment protection and energy conservation, electric vehicles have gained increasing attention [1-3]. Different from the internal combustion vehicles, electric vehicle have an electric motor embedded in the powertrain. Since the efficiency in the energy conversion of an electric motor together with the associated power electronics supply is much higher than internal combustion vehicles, electric vehicle need less energy to move [4]. Furthermore, exploiting the capabilities of the electric motors, additional abatement in energy consumption can be achieved. For instance, the start-stop and the regenerative braking features can further reduce the energy consumption by approximately 20%–30% [4]. Therefore, electric vehicle are convenient, not only for increasing the efficiency in the energy utilization, but also for cutting out environmental pollution in an equal proportion [4]. There are many type of electric vehicle which include electric scooter, electric skateboard, hoverboard, and electric moped scooter. Electric bicycle is one of the electric vehicle which uses electric motor for propulsion. There are a great variety of electric bicycle available worldwide from electric bicycle