Title page for ETD etd-102497-12366


Type of Document Master's Thesis
Author Katsis, Dimosthenis C.
Author's Email Address katsis-dc@salem.ge.com
URN etd-102497-12366
Title Development of a Testbed for Evaluation Of electric Vehicle Drive Performance
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Lee, Fred C. Committee Chair
Borojevich, Dushan Committee Member
Lai, Jason Committee Member
Keywords
  • Electric Vehicles
  • Inverter Fed Drives
  • Efficiency
  • Drive Cycles
Date of Defense 1997-08-27
Availability unrestricted
Abstract
This thesis develops and implements a testbed for the evaluation of inverter fed motor

drives used in electric vehicles. The testbed consists of a computer-controlled

dynamometer connected to power analysis and data collection tools. The programming

and operation and of the testbed is covered. Then it is used to evaluate three pairs of

identical rating inverters. The goal is to analyze the effect of topology and software

improvements on motor drive efficiency.

The first test analyzes the effect of a soft-switching circuit on inverter and motor

efficiency. The second test analyzes the difference between space vector modulation

(SVM) and current-band hysteresis. The final test evaluates the effect of both soft-switching

and SVM on drive performance.

The tests begin with a steady state analysis of efficiency over a wide range of torque

and speed. Then drive cycles tests are used to simulate both city and highway driving.

Together, these dynamic and steady state test results provide a realistic assessment of

electric vehicle drive performance.

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