Dr.
Range Electric Vehicle
Performance Analysis Software
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Dr.
Range Electric Vehicle Performance Analysis Software |
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| Win95, 98 MacOS
Requires Excel 97 or later Have you ever wondered how far a given electric vehicle will really go? Have you ever wanted to quickly check the practicality of a new design? Have you ever lost a race because you weren't sure what your optimum cruising speed was? For design, analysis, racing, and touring Dr. Range computes the range of Electric Vehicles (EV's). Dr. Range is a tool for trade studies and optimization. In design of new EV's, or in tuning the configuration of an existing EV, Dr. Range can be used to optimize performance. |
| Analysis: Decision makers can use Dr. Range to make assessments of EV capability that can be used in the specification of charging requirements, e.g. parking meter and garage charging. |
Optimization:
In racing Dr. Range can be used to determine optimum vehicle parameters such as cruising speed and battery weight. If configuration changes are made during a race, Dr. Range can provide new estimates without extensive rework. |
Touring:
Dr. Range can determine how far the vehicle will go before charging is needed using driving conditions, vehicle properties, battery configuration, optional solar power configuration, optional hybrid power configuration, and weights. |
The Dr. Range Model
Dr. Range compares drag, rolling, and hill climbing power with available power to compute range vs. battery weight. Cruising speed, frontal area and coefficient of drag are used to compute the drag force. Skin friction and flow conditions are incorporated by increasing or decreasing the drag coefficient. Dr. Range models the energy recovery from regenerative braking. Various battery technologies can be compared by the supplying the specific energy to the program. Some electric vehicles utilize solar panels or hybrid power units (HPU's). Dr. Range computes the solar panels' and HPU 's extension to range.
Dr. Range Outputs
The results that Dr. Range outputs include optimum cruise speed, vehicle forces,
power loss & gain, battery calculations, and of course, range, battery only
time and Hybrid burn time.
Dr. Range is distributed electronically. To order click on the button and type: "Order Dr.Range" in the message.
Conclusions
A typical analysis run of Dr. Range would show how the example vehicle's range varies with the weight of the battery pack . We would select a battery weight that achieves our objective. Alternately we may decide to change a design parameter and repeat the analysis.
DISCLAIMER
By nature, engineering calculation involves approximation.
This approximation leads to uncertainty.
This software is sold "as is" without warranty of
merchantability or fitness for any purpose expressed or implied.
