BASCO: Hybid Lawn MowerErfan AhmadAndrew BauerDerek Forehand

Topics1. Gantt Chart

2. Testing3. Power Analysis

Gantt Chart

Testing• Tested the electric

components for power draw and run time

• Used back calculation to calculate current draw on components.

• Discussed potential trade-offs between performance and run-time

Testing Conditions• Wet thick grass to find a

maximum cutting load• “Low load blade”

minimum load• “High load blade”

maximum load• “On road” minimum

trans axel load• “Off road” maximum

transaxle load

Testing Facility

Power Analysis• Battery discharge time may be estimated via:• Ex. A 150 A-hr battery with a

current load of 35 amps would have a projected run-time of 4 hours and 17 minutes.

Power AnalysisPower Analysis

• Determine average current draw of components (back calculation)

• Plug into the equation• Project run-time of the machine

on just battery power

Power AnalysisPower Analysis

• Battery charge time calculators are available as online tools.

• Online Calculator• Useful for determining run-time

on fuel for an average day• Cost analysis

Questions