Viya+more

Oct 17 Researched ways>>increase energy efficiency of escalator motors

E-Save technology >> controller~monitors load on electric motorreduces amount of power used when load is lighter used in Las Vegas convention centre http://www.automation.com/content/kone-and-power-efficiency-implement-e-save-technology-at-las-vegas-convention-center

How E-Save tecnology works: http://www.powerefficiencycorp.com/technology.php

Power Efficiency Corporation is a green energy company focused on efficiency technologies for electric motors. Power Efficiency is incorporated in Delaware and is headquartered in Las Vegas, Nevada. The company has developed a patented and patent-pending technology platform, called E-Save Technology™, which has been demonstrated in independent testing to improve the efficiency of electric motors by up to 35% in appropriate applications. Electric motors consume over 25% of the electricity in the U.S. and many operate inefficiently. E-Save Technology™ can be licensed to motor, controls and equipment manufacturers. Power Efficiency’s first product based on E-Save Technology™ is a Motor Efficiency Controller for applications such as escalators, crushers, granulators, mixers, saws and MG elevators. Power Efficiency is also developing a new product based on E-Save Technology™ for the tens of millions of small motors found in applications such as residential air conditioning, pool pumps, and clothes dryers. The company is working with manufacturers to incorporate this technology directly into new motors and appliances.
 * About Power Efficiency Corporation**

http://www.powerefficiencycorp.com/pdf/ES_Caesars_Escalator.pdf Demonstrates one hotel's kilowatt usage over period of 5 days after installation of motor efficiency motor

**Technology outline & how it can save energy:** The energy optimizer (also known as performance controller, energy saver or power factor controller) is a solid-state controller that reduces losses in AC induction motors in the form of energy efficiency and soft starting capability. It is not a variable speed drive and does not change the frequency of the motor. ** During the low load condition, induction motors usually operating at full supply voltage have very low power factor and are less efficient. The energy optimizer could provide the required motor operating voltage to suit various loading conditions **, resulting in power factor improvement and reduction of motor losses. The other benefit of the energy optimizer is its soft starting property that reduce motor starting current and excessive wear of mechanical gears, chains, belts etc. associate with the mechanical transmission system. The energy optimizer could be use for any AC motor application with constant speed and variable load. Best applications are those motors with substantial variation in loading such as escalator and passenger conveyers. An energy optimizer

Service-on-Demand Escalator http://ee.emsd.gov.hk/english/lift/lift_tech/lift_tech.html#3 Includes "automatic start/stop control" technology of these sensors seem to be expensive>>will energy savings pay off the price of installing this technology? Consider the amount of escalators found in the science centre.