Designers in various industrial areas have been tackling energy-saving and environment-friendly production, which are urgent problems to be solved in realizing a sustainable society. The same goes for elevators, and we have been continuously struggling to propose the best solutions. Among many possible solutions, we focus on one in particular, namely, storing the power generated from natural power sources in rechargeable batteries for subsequent use under normal operation. Our new energy-saving system, which we introduce in this paper, proved to be remarkably effective.
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