Elevator | Power & Motion Technology | Automation | By Samantha Lotz | Mar 17, 2014
The Challenge
• Existing 3m/s DC-SCR installation employed on six lifts in London's Apollo House required ever increasing maintenance to sustain system operation.
• Sourcing spare parts for this aging installation was becoming difficult.
• The system was not energy efficient.
The Solution
• Modernize six lifts with six 150A Quattro DC Elevator Drives used to operate existing DC motors.
• Quattro DC Elevator Drives replaced the existing isolation transformers, ripple filters and all large core interconnecting wiring required for the DC- SCR solution.
Results
• Installing Quattro resulted in estimated energy savings of approximately 25% when compared to the previous DC-SCR solution which was already using regenerative technology.
• Power factor, harmonic distortion and peak currents were all significantly improved.
• The new solution ensured less heating and more floor space in the machine room.
• Installation was simplified because no isolation transformer or ripple filter was required and there was less on-site wiring.
• The introduction of the Lester Controls' serial 'Direct-to-Floor' controller software resulted in a significantly reduced floor-to-floor travel time when compared to the old system.
• Smoother acceleration and deceleration resulted
in improved ride quality.
• Quattro DC Drives are designed so they can be converted for use with AC motors. This allows the property owner to modernize with these energy efficient DC drives now without changing the motors, but allows the flexibility to convert to AC motors in the future.
Milwaukee, WI
By replacing antiquated elevator motor controls with Magnetek energy-saving Quattro DC adjustable speed drives with clean utility side harmonics and regenerative technology, the CityCenter Building elevators are today able to achieve 38 percent daily energy savings based on an average of 500 runs per day by each car. Magnetek Quattro drives used in the modernization project are designed to consume the lowest energy possible and their precise, accurate controls provide smooth acceleration and deceleration, resulting in both superior ride quality and reliability.
Dallas, TX
As Dallas' premiere Class A, multi-purpose business complex, The Crescent houses office spaces, hotel accommodations, restaurants, and retail shops. To effectively transport the large number of people that work in and visit The Crescent office building every day, a more energy efficient solution was required to replace an aging elevator system.
North America - EN
