Loading...

Design of Soft-Switching Inverter Using Wide Bandgap Transistors for Electric Vehicle

Elyasi, Bijan | 2021

266 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54217 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Tahami, Farzad
  7. Abstract:
  8. The electric vehicle inverter, as one of the most important components of the vehicle, needs to have a high efficiency and also be able to work at high temperatures. Due to passing a large part of the battery power through this part and being one of the components that has the biggest power in an electric vehicle , traction inverter Efficiency has a big impact on the total efficiency of the whole vehicle . By increasing the battery voltage of electric vehicles, in order to achieve a higher charging power, the electric vehicle inverter must be able to withstand a voltage of about 800 volts input .On the other hand, in electric car inverters, the goal is to reach a power density of 100kw / L. Due to the power density of the existing samples is less than 30kw / L, it is not possible to achieve this goal using silicone switches and hard switching method . In order to achieve high power density and reduce voltage stress in switches, in this research, an NPC structure with soft switching has been introduced in which the components and circuits used to soften the switching have very low losses. The advantages of this inverter are very high efficiency, high power density, cost and low number of additional parts, and the distribution of loss power between the switches and the possibility of easier disposal, and as a result, the ability to work at higher temperatures. The performance of the introduced structure has been proved by simulation in Simulink and Pspice environments and construction of a practical example of it. And three-level inverters with silicone switches, each of which is suitable for use in an 800-volt electric vehicle, have been compared with the proposed structure in terms of efficiency and cost
  9. Keywords:
  10. Electrical Vehicle ; Electric Vehicle Charger ; Soft-Switching ; Wideband Gap Transistor ; Soft Switching Three Level Inverter ; 800 Volt Electric Vehicle ; Soft Switching Inverter

 Digital Object List

 Bookmark

No TOC