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Sigma Elevator Company, which traces its heritage back to Goldstar and later LG elevators, is a respected global provider of vertical transportation systems, including elevators, escalators, and moving walks. The company emphasizes safety, ride comfort, modern design, and energy efficiency in its products.
Sigma has an international presence, serving customers in numerous countries. They utilize permanent magnet (PM) gearless machine technology, which offers significant energy savings and allows for more compact machine room designs, or even Machine Room-Less (MRL) solutions. The company focuses on providing customized solutions to meet the specific needs of various projects, considering factors like shaft sizes, traffic patterns, and aesthetic requirements.
PM Gearless Traction Machine: This technology is more energy-efficient (often reducing energy loss by around 35% compared to induction machines) and allows for smaller machine rooms.
Variable Voltage Variable Frequency (VVVF) Drive: Provides precise speed control, resulting in smooth starting, acceleration, deceleration, and stopping, which enhances ride comfort and leveling accuracy.
Safety and Quality: Sigma products are engineered to comply with high safety standards and often feature multiple safety components, with some products passing international safety certifications (like E3 certification).
Regenerative Drive System: In some models (especially for high-rise applications), Sigma uses a system that captures energy generated when the elevator travels up with a light load or descends with a heavy load, feeding it back into the building’s electrical grid for re-use.
