Applications of variable speed drive (VSD) in electrical motors energy savings

Saidur, R.; Mekhilef, Saad; Ali, Mohammed A. H.; Safari, Amin; Mohammed, Hussein A.

doi:10.1016/j.rser.2011.08.020

Cited by 204 publications

(106 citation statements)

References 21 publications

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“…Induction motors (IMs) and permanent magnet synchronous motors are two types of AC motors that are employed in AC drive systems. Variable frequency control techniques are suggested in numerous industrial applications, which can provide cost-effectiveness and save energy for IMs [1][2][3][4][5]. Direct torque control and field-oriented control (FOC) are two popular control techniques for IMs [6].…”

Section: Introductionmentioning

confidence: 99%

Vector control of unbalanced 3-phase IM using forward and backward components

Jannati¹,

Idris²

2017

Turk J Elec Eng & Comp Sci

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Abstract:In some industries, continuous operation of 3-phase induction motors (IMs) even under faults until the scheduled maintenance time is essential. Conventional control techniques such as field-oriented control (FOC) cannot be used to control faulty IMs since this will result in significant oscillations in the speed and torque. Consequently, a new control approach must be developed for improving IM performance during fault conditions. This paper presents a method for vector control of 3-phase IMs under open-phase faults. The main advantage of this control scheme is its ability to handle not only one phase but also two phases of open-phase fault conditions. When applying this control technique to a faulty machine, only minor changes to the parameters used in the equations are needed and the conventional FOC algorithm used for healthy 3-phase IMs can still be used. In this paper, simulation and experimental results are presented to study the effectiveness of the proposed technique to control both healthy and faulty 3-phase IMs. The results show that the proposed technique reduces electromagnetic torque pulsations during open-phase fault conditions.

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Section: Introductionmentioning

confidence: 99%

Vector control of unbalanced 3-phase IM using forward and backward components

Jannati¹,

Idris²

2017

Turk J Elec Eng & Comp Sci

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“…A few are listed in the references section of this report for review. (36)(37)(38) Assessing these data, and other reports show clear documented evidence of energy savings using VSDs of between 15% and 35%, with results dependent upon belt feed rates. However, using finely tuned VSDs (either VFD or VTD) in such processes as those found in Marlette could yield an estimated approximate savings of 15% to 20% kWh at ½ grain feed rates.…”

Section: 2) Legs and Dragsmentioning

confidence: 65%

Using Undergraduate Engineering Students to Develop Practical Methods for Reducing Energy Costs at a Grain Receiving, Storage, and Transfer Facility Based on an Energy Study in the State of Michigan

Fletcher¹

2015 ASEE Annual Conference and Exposition Proceedings

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“…In the occurrence of an AC source, the input stage is composed of an AC-DC converter, also known as a rectifier. Variable speed drives augment the frequency of the AC source to drive electronic motors [13]. For variable speed drives, the input stage must both rectify and regulate the DC bus voltage of the inverter stage.…”

Section: Inverter Systemmentioning

confidence: 99%

“…Additionally, equations (3-16) and (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) are used in conjunction to solve for the output power. The derivation is shown below.…”

Section: Output Powermentioning

confidence: 99%

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Low-Frequency Series Loaded Resonant Inverter Characterization

Medina¹

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Low-Frequency Series Loaded Resonant Inverter Characterization Alfredo MedinaModern power systems require multiple conversions between DC and AC to deliver power from renewable energy sources. Recent growth in DC loads result in increased system costs and reduced efficiency, due to redundant conversions. Advances in DC microgrid systems demonstrate superior performance by reducing conversion stages. The literature reveals practical DC microgrid systems composed of wind and solar power to replace existing fossil fuel technologies for residential consumers. Although higher efficiencies are achieved, some household appliances require AC power; thus, the need for highly efficient DC to AC converters is imperative in establishing DC microgrid systems. Resonant inverter topologies exhibit zero current switching (ZCS); hence, eliminate switching losses leading to higher efficiencies in comparison to hard switched topologies.Resonant inverters suffer severe limitations mainly attributed to a load dependent resonant frequency. Recent advancements in power electronics propose an electronically tunable inductor suited for low frequency applications [24], [25]; as a consequence, frequency stability in resonant inverters is achievable within a limited load range. This thesis characterizes the operational characteristics of a low-frequency series loaded resonant inverter using a manually tunable inductor to achieve frequency stability and determine feasibility of utilization. Simulation and hardware results demonstrate elimination of switching losses via ZCS; however, significant losses are observed in the resonant inductor which compromises overall system efficiency.Additionally, harmonic distortion severely impacts output power quality and limits practical applications.

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Applications of variable speed drive (VSD) in electrical motors energy savings

Cited by 204 publications

References 21 publications

Vector control of unbalanced 3-phase IM using forward and backward components

Vector control of unbalanced 3-phase IM using forward and backward components

Using Undergraduate Engineering Students to Develop Practical Methods for Reducing Energy Costs at a Grain Receiving, Storage, and Transfer Facility Based on an Energy Study in the State of Michigan

Low-Frequency Series Loaded Resonant Inverter Characterization

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