Design of Hybrid Power-Split Transmission For Three- Wheeler Rickshaw

Abstract

The main aim of this research is to present research findings and the work carried out related to the design of three-wheelers with hybrid drivelines, identifying the impact that hybrid vehicles have on the environment and on fuel efficiency, and using it to locally implement this phenomenon, setting up the target vehicle specifications, performance goals, selection of motors, battery, engine generator, and other major and minor components. The performance of HEV greatly depends upon its architecture and its components like battery, motor, bidirectional energy converters, and the combustion engine. To select the most optimum design for a power-split hybrid, considerations regarding the power source efficiency, vehicle driving cycle requirements, transmission efficiency, and primary control strategies are defined. Vehicle dynamic loads were calculated including the tractive forces, tractive powers source dynamics, wheel rpms, wheel torques, velocities and torque at the vehicle differential etc. to cater the drive cycles used (the Indian Drive Cycle). Based on fuel economy optimization and drivability evaluation, a single planetary gear set is proposed, according to the gear ratios considered while accounting for the planetary gear-set configuration design that included factors like the speed ratios that were calculated from the ratio of teeth. A 3D Solid works model is designed and developed through initial gearbox design calculations. Then the design is simulated through Ansys and analyzed thoroughly. Software’s including MATLAB/Simulink were used to simulate the performance of our three-wheeler for the power-split configuration, accounting for the powers achieved, motor and engine speeds, electrical losses, motor performance including range, speed changes along drive-cycles, battery SOC etc. and the power and energy analysis of the engine proposed using the engine Optimum Operation Lines (OOL) for better comparison of the results, all of which has been achieved as discussed further this report.