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Development of energy-saving elevator using regenerated power storage system

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6 Author(s)
Tominaga, S. ; Ind. Electron. & Syst. Lab., Mitsubishi Electr. Corp., Hyogo, Japan ; Suga, I. ; Araki, H. ; Ikejima, H.
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Various measures have been strongly focused upon to prevent global environmental problems. One of them has been the development of energy saving methods for electrical apparatus. In contrast, a standard elevator with a diode rectifier consumes regenerated power from its electric motor as heat in resistors. As a result, the entire elevator system suffers a remarkable energy loss. This paper proposes an energy-saving elevator capable of storing regenerated energy and capable of discharging the stored energy during operation. The result is a highly efficient elevator system. This paper also focuses on three methods for elevator systems: load-leveling method, storage method, and energy-saving method. The technical possibilities of these methods are successfully verified through prototypes. With the energy-saving method in particular, a 31% energy saving is attained due to the use of nickel metal-hydride (Ni-MH) batteries

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Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the  (Volume:2 )

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