Induction machine at unity power factor with rotating power electronic converter

Malik, Naveed-ur-Rehman; Sadarangani, Chandur; Cosic, Alija; Lindmark, Magnus

doi:10.1109/speedam.2012.6264391

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…They were proposed to overcome some typical drawbacks of conventional induction motors, mainly poor efficiency and power factor, by exploiting a partial power converter, which means an inverter rated at only a fraction of the motor rated power, cutting the cost. According to the DOL-DWIM approach, a special induction machine is used, encompassing two full sets of stator windings: one being directly connected to the grid and a second one being fed by an inverter supplied through a floating capacitor [12][13][14][15][16][17]. According to the basic DOL-DWIM configuration, the two winding sets feature the same number of turns; thus, the inverter supplying the second set is rated at the grid voltage, although at remarkably lower power.…”

Section: Introductionmentioning

confidence: 99%

“…According to the basic DOL-DWIM configuration, the two winding sets feature the same number of turns; thus, the inverter supplying the second set is rated at the grid voltage, although at remarkably lower power. DOL-DWIMs are generally managed by simple control algorithms, mainly developed in order to control the PF under sinusoidal steady state operation [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

et al. 2021

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A technique to improve the performance of grid-connected induction motors by exploiting an auxiliary winding set is proposed in this paper. This auxiliary winding features the same distribution of the main winding, although with a reduced number of turns and it is fed by an inverter a fraction of the power in comparison with the rated size of the induction motor. As shown in the paper, through the auxiliary winding, it is possible to set the machine power factor, increasing the efficiency of the power conversion system and mitigating speed oscillations due to torque disturbances. A mitigation of the grid current peaks due to motor start-up is obtainable. First, the proposed technique is theoretically introduced, then a feasibility assessment is accomplished by simulations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

et al. 2021

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“…Similarly, the brushless doubly-fed induction generator (B-DFIG) has been the focus for advancements on variable speed offshore wind power applications [15]- [26]. In automotive applications, a rotating dc-dc converter with MOSFETs has been tested [27].…”

Section: Introductionmentioning

confidence: 99%

Rotating Power Electronics for Electrical Machines and Drives - Design Considerations and Examples

Nøland

Molinas

2020

2020 15th IEEE Conference on Industrial Electronics and Applications (ICIEA)

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The industrial shift towards rotating power electronics (RPE) promotes brushless flexible rotor excitation, as well as battery-less rotor instrumentation and measurement devices for electrical machines. Recently, the high-power thyristor converter has been proven to be excellent for rotating applications. Moreover, MOSFET components have been successful for lowpower rotating applications. However, the question arises whether IGBT's, capacitors and related components are able to withstand the centrifugal forces that are generated due to shaft rotation. In fact, the manufacturers do not conventionally test their power electronic components against cyclic accelerational forces. Moreover, the insulation material in some types of semiconductor modules are viscous and will be affected by rotational forces. This paper addresses the current design challenges and presents new design criteria for RPE systems and applications. Finally, this paper reviews the current technology status for RPE concepts.

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“…Thus, the slip-rings and carbon brushes of the induction machine can be removed. The studies on steady state [11,12] and dynamic performance [13] of the system reveal the capability of the topology to achieve constant speed operation and unity power factor. The stator power factor can be improved over a wide range of load torque.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an induction machine using a rotor integrated converter with a floating capacitor

Yao

Cosic

Sadarangani

2015

2015 18th International Conference on Electrical Machines and Systems (ICEMS)

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A novel topology of induction machine with a rotor integrated converter with a floating capacitor is investigated in this paper. The stator windings of the induction machine are directly connected to the grid. While the rotor windings are connected to a converter with a floating capacitor. The steady state mathematical model is presented and used to predict the operating range of the induction machine. The result shows that the induction machine can operate in a wide torque and speed range instead of working on the original torque-speed curve. In addition, the relationship between capacitance and capacitor voltage is studied for the constant speed and variable load operation. It is shown that it is possible to choose a low volume and high capacitance capacitor since the average DClink voltage is quite low.Index Terms-Induction machine, unity power factor, rotor integrated converter, steady state model, operating range, floating capacitor.978-1-4799-8805-1/15/$31.00 c ⃝2015 IEEE

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Induction machine at unity power factor with rotating power electronic converter

Cited by 11 publications

References 20 publications

Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

Rotating Power Electronics for Electrical Machines and Drives - Design Considerations and Examples

Analysis of an induction machine using a rotor integrated converter with a floating capacitor

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