OSU Bike Generator
The bike generator is a human powered generator that features a stationary generator, a small 12 volt battery, and a 1000 watt inverter. The bike also has an energy monitor that displays information like watts produced in real time. The bike and generator assembly can be ridden without disassembly to events, making it a highly efficient, carbon neutral operation!
The bike generator's purpose is to produce renewable electricity that can power small items and serve as an outreach resource to inspire energy conservation and efficiency. It has powered sound systems, fridges, freezers and cell phone charging stations at events.
Assembling our bike generator cost around $1,900 and included the generator, battery, charge controller, energy display, inverter and assembly assistance from Shift Electric Vehicles in Albany, Oregon. Making your own is possible, as most of these parts are sold commercially and there are some pre-assembled versions as well.
The 1000 watt inverter converts the direct current (DC) from the generator and/or battery to alternating current (AC) for everyday items. Although the bike and battery can only produce constant outputs of up to around 350 watts, the 1000 watt inverter handles surges that result from powering on motor-driven devices like refrigerators.
The generator spins off the rear tire, producing power that varies with how fast the rider pedals and how hard they push. This power can then either be used to directly power the inverter or charge the battery. The inverter provides high quality, constant 120 volt power, making it safe for all standard 120 volt devices.
Switching the battery into the circuit while riding assists the cyclist and allows the bike to power larger loads more consistently and for the rider to take short breaks. With no rider, the battery can power small loads for short times, but is primarily used to smooth the power output. Whenever the demanded wattage is less than what the bike generator is producing, the excess power goes into charging the battery.
Riding the bike at a comfortable pace will produce somewhere around 100-200 watts that can be sustained for as long as the biker can pedal. Increasing the electrical load increases the resistance that the rider encounters and therefore the amount of force that is required to rotate the pedals.
To request the OSU Bike Generator for your event, please contact us!