Resource Energy Controller™

Example frontpage imageThe Resource Energy Controller™ is based on a proven technology that delivers 25 to 45% energy savings. A technology that until today was ahead of its time, but now is positioned to address a major global concern. That concern is how to significantly reduce the amount of fossil based fuels used as well as the associated electric energy being consumed that might otherwise be freed-up for other uses. This proven technology involves a controller that is based on a NASA invention that was developed for energy conservation of AC motors on board spacecraft. NASA was granted a patent (number 4,266,177) by the US Patent and Trademark Office on May 5th 1981. REST team members first commercialized this invention that became an exclusive license arrangement based on the success of their controller. The patent has since expired and is now in the public domain.Example frontpage image

However, since the commercialization of the NASA controller, REST team members have made a number of innovations that are kept as trade secrets, and are currently available through REST. In particular, some of these innovations have led to a controller that can be used across a large range of end-use applications and different motor sizes with minimal modifications, while another group of innovations have led to a decrease in manufacturing costs of the controllers. These improvements, along with the increasing cost of electricity, make the REST controller now extremely economically viable for AC motor customers who can expect a return on investment (ROI) of two years at 10 cents per kilowatt-hour electricity rate. Note that many heavy industrial areas are above that rate, and rising rapidly, and these areas represent the greatest targets for REST to address.

How the REST Motor Controller works

The REST Motor Controller regulates the power consumed by an AC induction motor, by:

  1. Determining the phase difference between the motor voltage and motor current, and
  2. Using the resulting error signal to gate SCRs (silicon-controlled rectifier or thyristor) through which the power is supplied to the motor, reducing current delivered to an underloaded motor.

This process is controlled using a very fast feedback circuit (~4 millisecond response time).

Benefits of the Resource Energy Controller™

With a proven 15-40% energy savings throughout the entire motor life, the typical payback time is 24 months. Using the Resource Energy Controller™ extends the life of equipment because reduced inrush current (up to 70%), reduced motor temperature (~10°C), and smoothed motor startup all lead to longer motor lifetimes.

The Resource Energy Controller™ always supplies the power needed by the motor and is rugged, reliable, and maintenance free.