Analysis of Regenerative Cycles and Energy Efficiency of Regenerative Elevators

Erica, Dora; Godec, Damjan; Kutija, Martina; Pravica, Luka; Pavlić, Ivana

doi:10.1109/edpe53134.2021.9604058

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…AC gearless motor machines are used in more elevators today despite that they are more expensive. This is because they have higher overall efficiency and may be utilized for a greater amount of time [5,7,8] .…”

Section: Geared and Gearless Motorsmentioning

confidence: 99%

Smart Elevator Systems

Al‐Kodmany

2023

j. of mech. mater. and mech. res.

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Effective vertical mobility is a crucial element in the design and construction of tall buildings. This paper reviews recent “smart” developments in elevator technologies and analyzes how they affect the construction and operation of tall buildings. In an approachable and non-technical discourse, it maps out, arranges, and compiles complicated and dispersed information on various elements of elevator design. It discusses hardware-based machinery, such as AC and gearless motors, machine-room-less (MRL) elevators, regenerative drives, elevator ropes, and LED lighting, as well as software-based solutions, such as destination dispatching systems, people flow solutions, standby mode, and predictive maintenance applications. Future vertical transportation models are also discussed, including multi-directional elevators, and circulating multi-car elevators. Lastly, the paper suggests fruitful avenues for further studies on the subject, such as robotics, 3D printing, and the impact of COVID-19 pandemic on elevator design.

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Section: Geared and Gearless Motorsmentioning

confidence: 99%

Smart Elevator Systems

Al‐Kodmany

2023

j. of mech. mater. and mech. res.

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“…Their ranking is related to the energy consumed during standby and during lifting. The energy standby is determined 10 min after the last lift is completed, while the lifting energy refers to the consumption during the motion for a given route, always taking into account the corresponding energy spent on opening the doors [23].…”

Section: Vdi 4707mentioning

confidence: 99%

Energy Savings in Elevators by Using a Particular Permanent-Magnet Motor Drive

Vlachou,

Karakatsanis,

Kladas

2023

Energies

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This paper presents the energy savings achieved by using a particular three-phase permanent-magnet motor drive control strategy in an elevator application. The proposed control methodology, based on a particular variable-amplitude variable-frequency voltage control pattern technique implemented in a permanent-magnet motor, is compared to a standard induction motor elevator case. By adopting appropriate simultaneous changes in the amplitude and frequency of the motor voltage, high speeds can be attained in conjunction with smooth starting and stopping actions involving a reduced supply current during the respective movement of the elevator. In addition, this method exhibits a high power factor with a good driving quality. The control technique introduced achieves the levelling-off of the floor and the group movement of the system using in the programmable memory a speed pattern that is generated targeting proportionality to the position of the lift. In that respect, significant energy savings can be obtained, which, depending on the type of motor implemented, can be up to 30% compared to the conventional techniques. These improvements can be attained with the appropriate handling of the applied pulse width modulation techniques. Various simulated and experimental results are given, illustrating the respective energy savings achieved with the proposed methodology.

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“…The 6phase interleaved DC/DC converter was proposed to achieve the desired maximum output current ripple, reduce the volume of inductor and reduce the DC/DC converter losses. The SC bank was sized according to the regenerative energy potential analysis presented in [29,31]. The EESS simulation model consisted of the DC/DC converter, the SC bank, and the EESS control algorithm.…”

Section: Energy Storage Systemmentioning

confidence: 99%

Supercapacitor-Based Energy Storage in Elevators to Improve Energy Efficiency of Buildings

2022

Self Cite

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Improving energy efficiency is the most important goal for buildings today. One of the ways to increase energy efficiency is to use the regenerative potential of elevators. Due to the special requirements of elevator drives, energy storage systems based on supercapacitors are the most suitable for storing regenerative energy. This paper proposes an energy storage system consisting of a supercapacitor bank and a bidirectional six-phase interleaved DC/DC converter. The energy savings achieved by the proposed system were investigated through simulation tests. The proposed system was modeled considering all physical constraints. A simulation model of the existing faculty elevator system was created in PLECS and verified with field measurements. Reliable results were ensured by using the verified simulation model and considering all physical constraints. The operation of the proposed energy storage system was tested under various conditions. In addition, the simulation model of the elevator system with the proposed energy storage system was tested using the elevator traffic data obtained from the measurements. The simulation results show the effectiveness of the proposed energy storage system and that significant energy savings can be achieved.

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Analysis of Regenerative Cycles and Energy Efficiency of Regenerative Elevators

Cited by 9 publications

References 16 publications

Smart Elevator Systems

Smart Elevator Systems

Energy Savings in Elevators by Using a Particular Permanent-Magnet Motor Drive

Supercapacitor-Based Energy Storage in Elevators to Improve Energy Efficiency of Buildings

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