Project

# Title Team Members TA Documents Sponsor
36 High-quality low-loss low-cost dc motor speed control with wireless remote controller
 Jing Guo
Jun Ma
Yu Qiao
 James Kolodziej design_document0.pdf
final_paper0.pdf
presentation0.presentation
proposal0.pdf
This project uses a suitable power electronic converter, in combination with an encoder or tachometer, and feedback control, to produce a motor system that runs at an adjustable speed for a small mobility application. For example: a small motorized shopping cart, luggage cart or electric golf bag cart. The source is from a 12 V battery and control currents over a range of 0 to 50 A. The controller controls at least 90% efficient for motor loads in the range of 50 to 150 W. It also delivers 150 W continuously, 250 W for at least one minute, and up to 50 A at 10 V or more for at least 5 seconds without damage. If it is overloaded for a longer period, it should shut off automatically and require a reset by the user. Speed regulation allows a speed decrease of up to 10% for a load change of 0 to 150 W. Total parts cost of the converter does not to exceed $12.
Moreover, a wireless remove control is used in this project. it uses RF transmitter and receiver on both the remote controller and the local motor speed control. Users are able to use the remove controller to achieve all the functions on the converter.

Electricity-Generating Device Retrofitted for Spin Bikes with Wall Outlet Plug Connected to Gym's Grid

Raihana Hossain, Elisa Krause, Tiffany Wang

Electricity-Generating Device Retrofitted for Spin Bikes with Wall Outlet Plug Connected to Gym's Grid

Featured Project

**Elisa Krause (elisak2), Raihana Hossain (rhossa2), Tiffany Wang (tw22)**

**Problem:** Something we take for granted everyday is energy. Constantly, there is energy consumption in malls, offices, schools, and gyms. However, the special thing about gyms is that there is always someone using either the elliptical, bike or etc. Now what if, along with losing those extra pounds, you can also generate some electricity using these machines? Our device is a straightforward and cheap alternative for gyms to have retrofitted spin bikes that generate electricity, and for the gym to save money by using the electricity generated by the bikes that can be connected to the gym’s grid by simply plugging the device into the wall outlet.

**Solution Overview:** We are retrofitting a spin bike with an electricity-generating device that can be plugged into the wall outlet, which will be the path to send the generated electricity back to the gym’s grid to be used. The amount of electricity generated can also be monitored and displayed with the device.

**Solution Components:**

* **[Retrofit for Electricity Generation]** Component that attaches to any spin bike on the outside (straightforward and simple retrofit) and generates electricity when the bike is being used.

* **[Send Power to Gym Grid]** Component that reverses the typical direction of the wall outlet and sends the energy generated by the bike riders back to the gym’s power grid.

* **[Metering]** Component that records and displays how much energy was generated between the times when someone presses a button on the device. The first button press will reset the display. The second button press will show how much energy was generated from the time when the button was first pressed.

**Criterion for success:**

* Retrofits any (or the majority of) spin bike types

* Energy generated from people working out on the spin bikes is sent from a wall outlet to the gym’s power grid

* Device displays the power generated by a bike during the time of two button presses.

* Show that our power output being generated matches and syncs up with a sinusoidal input using a mock setup to simulate the grid

Project Videos