Enhancing Power Factor and Efficiency of Three Phase Induction Motor Drive using Single Main PWM Switch and Three Auxiliary Switches

Ambhorkar, Komal; Rana, Ashwani K.; Tutakne, D. R.

doi:10.1109/pedes.2018.8707482

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…As motor drive systems tend to dominate in elevator applications, enabling important energy savings with respect to direct motor supply by the grid, the requirement of an appropriate power electronics converter is usually referred to as a variable-voltage variable-frequency (VVVF) inverter [7]. This control technique is used in simulations where greater energy savings are required each time the load torque is reduced while controlling the speed of the system [8].…”

Section: Drive System Controlmentioning

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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Section: Drive System Controlmentioning

confidence: 99%

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

Vlachou,

Karakatsanis,

Kladas

2023

Energies

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Design, Analysis and Application of Control Techniques for Driving a Permanent Magnet Synchronous Motor in an Elevator System

Vlachou,

Efstathiou,

Karakatsanis

2024

Machines

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An electrical motors, together with its appropriate drive system, is one of the most important elements of electromobility. In recent years, there has been a particular interest by academic researchers and engineers in permanent-magnet motors (PMSMs) in various applications, such as electric vehicles, Unmanned Aerial Vehicles (UAVs), elevator systems, etc., as the main source of drive transmission. Nowadays, the elevator industry, with the evolution of magnetic materials, has turned to gearless PMSMs over geared induction motors (IMs). One of the most important elements that is given special emphasis in these applications is proper motor design in consideration of the weight and speed of the chamber to be served during operation. This paper presents a design of a high-efficiency PMSM, in which finite elements analysis (FEA) and the study of the lift operating cycle provided useful conclusions on the magnetic field of the machine in different operating states. In addition, a simulated model was compared with experimental results of test operations. Furthermore, the drive system also required the use of appropriate electrical power and controls to drive the PMSM. Especially in elevator applications, the control of the motor speed by the variable voltage variable frequency technique (VVVF) is the most common technology used to avoid endangering the safety of the passengers. Thus, suitable speed and current controllers were used for this purpose. In our research, we focused on studying different control techniques using a suitable inverter to compare the system operation in each case studied.

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Enhancing Power Factor and Efficiency of Three Phase Induction Motor Drive using Single Main PWM Switch and Three Auxiliary Switches

Cited by 2 publications

References 5 publications

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

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

Design, Analysis and Application of Control Techniques for Driving a Permanent Magnet Synchronous Motor in an Elevator System

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