A Battery-Supercapacitor Hybrid Powered EV SRM Drive and Microgrid Incorporated Operations
Objective
It is shown that the lowered/boosted DC-link voltage can yield less battery energy consumption owing to less switching loss under lower speed
Abstract
This paper presents a battery/super-capacitor (SC) powered electric vehicle (EV) switched-reluctance motor (SRM) drive and its microgrid incorporated operation control. The battery and the SC are connected to the motor drive DC link via an H-bridge converter and a one-leg boost-buck converter, respectively. The varied DC-link voltage can be set lower and higher than the battery voltage to yield the improved EV driving performance over wide speed range. Through the proposed current sharing control approach for the battery and SC, the battery can possess smooth discharging current characteristics.
The SC is arranged to be charged by the battery during constant speed driving duration to preserve sufficient energy. In the proposed EV SRM drive current control scheme, the feedback controller is augmented with an observed back electromotive force (EMF) feed forward controller and a robust current tracking error cancellation controller. More importantly for EV, the commutation shifting and the voltage boosting are applied to reduce the effects of back-EMF on the current control under higher speeds and/or heavier loads. And the regenerative braking is successfully conducted.
Similarly, the speed dynamic control is also enhanced by adding robust control. As to the microgrid incorporated operation, the EV SRM drive can perform the microgrid-to-vehicle (M2V) and vehicle-to-microgrid (V2M) operations to DC microgrid. The required schematics are formed using the embedded converters in the EV drive or the microgrid. Successful operations are verified experimentally.
Keywords: Electric vehicle, SRM, battery, super-capacitor, interface converter, microgrid, dynamic control.
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Block Diagram
Specifications
Software Configuration:
Operating System : Windows 7/8/10
Application Software : Matlab/Simulink
Hardware Configuration:
RAM : 8 GB
Processor : I3 / I5(Mostly prefer)
Learning Outcomes
- Introduction to Matlab/Simulink
- What is EISPACK & LINPACK
- How to start with MATLAB
- About Matlab language
- About tools & libraries
- Application of Matlab/Simulink
- About Matlab desktop
- Features of Matlab/Simulink
- Basics on Matlab/Simulink
- Introduction to controllers.
- Study of PWM techniques.
- Project Development Skills:
- Problem analyzing skills
- Problem solving skills
- Creativity and imaginary skills
- Programming skills
- Deployment
- Testing skills
- Debugging skills
- Project presentation skills
- Thesis writing skills
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