A regenerative converter (sometimes it is also known as regenerative inverter or regenerative drive) in an elevator is a device that transmit a power distributed by an traction elevator so that it can be reused by the building's power supply for other electrical systems.
Elevators are usually travels using power distributed by a power supply. When the elevator travels down with a heavy car load or up with a light car load, the traction drive machine functions as a power generator. Energy is being regenerated by the drive machine then transmitted by a regenerative converter back to a power distribution transformer and feeds to the building's electrical network along with the energy from the main power supply. The regenerated energy can be used for other machineries and electrical systems in the building such as air conditioners, ceiling lamps, power sockets, etc.
Nowadays many modern elevators (both gearless and machine room less traction) are using this device as an energy-saving feature. In addition, regenerative converter can saves up to 30% energy compared to elevators without this device and can decreases harmonic currents.
Notable elevator regenerative converters
Notes and references
Concept: Destination dispatch • Elevator algorithm • Elevator control system • Elevator machine room • Elevator maintenance • Elevator major alterations • Elevator modernization • Machine room less elevator
Elevator systems, controllers and equipments: Elevator fixtures • Elevator keys • Elevator special modes • Elevator doors • Door cam • Door interlocks (Interlock wiring communication system) • Door restrictor • Elevator Inspection Certificate • Emergency stop button • Floor designators • Gate switch • Old Deadman controls • Overspeed governor • Motor-generator set & Silicon-controlled rectifier (for DC-powered elevators) • Insulated-gate bipolar transistor (for AC-VVVF-powered elevators) • Regenerative converter (for AC-VVVF-powered elevators)
See also: List of elevator fixtures guide • List of elevator and escalator companies • Elevator door sill guide (Generic elevator component door sill guide) • Floor numbering (Unlucky floor numbers) • Elevator incidents and accidents
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