ISSN (ONLINE): 2395-695X ISSN (PRINT): 2395-695X International Journal of Advanced Research in Basic Engineering Sciences and Technology (IJARBEST) Vol. 2, Issue 10, October 2016 K. Deepak et al ©IJARBEST PUBLICATIONS Simulation and Implementation of Electric Bicycle employing BLDC Drive K.Deepak 1 , R.Gowtham 2 , T.Hariharan 3 , S.Manimaran 4 & Dr.R.Seyezhai 5 1,2,3,4 UG Scholars, Department of EEE, SSN College of Engineering, Chennai. 5 Associate Professor, Renewable Energy Conversion Laboratory, Department of EEE, SSN College of Engineering, Chennai. Abstract - Electric Bicycles have been gaining attention as an efficient and clean means of transportation. This paper focuses on the design and implementation of a hybrid powered electric bicycle employing a dc-dc power converter. Two DC sources are used: battery and super capacitor. The super capacitor is connected in parallel to the battery and a dc-dc converter is designed in closed loop which arbitrates power between the battery and super capacitor. The purpose of employing super capacitor is to drive the vehicle during the peak power required by the load. The main components of the proposed electric bicycle are: battery, super capacitors, dc-dc converter, controller and BLDC motor. These components are modeled in MATLAB. Three topologies of dc-dc converter are investigated for the electric bicycle and they are compared in terms of ripple at the input and the output and from the results it is found that the modified boost converter results in reduced ripple. The lead acid battery and super capacitor are modeled in SIMULINK to obtain the voltage and current waveform. A prototype of the proposed dc-dc converter is built alongwith controller and it is tested. A real-time working model of electric bicycle is built and the performance of the sources and the power converter are analyzed and the results are verified. Index Terms- Electric bicycle, ripple, duty cycle, state of charge I. INTRODUCTION In the present era, there is an increasing demand for transportation and this has led to the vast development in the area of electric vehicles. Bicycle is a mode of transportation which is safe and cheaper and it reduces the air the pollution. Therefore, the use of electric bicycles has increased. Conventionally, dc motors are employed but it suffers from commutation problem and requires frequent maintenance. The deployment of Brushless DC motor (BLDC) for e-cycle overcomes the above problem.The BLDC motor is electrically commutated by power switches instead of brushes and is highly reliable since it does not have any brushes to wear out and replace. 16