Loss modeling of converter induction machine system for variable speed drive

Sousa, G.C.D.; Bose, B.K.; Cleland, John G.F.; Spiegel, R.J.; Chappell, Philip

doi:10.1109/iecon.1992.254595

Cited by 44 publications

(12 citation statements)

References 8 publications

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“…The behavior of anomalous loss [calculated from (6)] against the fundamental frequency is shown in Fig. 5.…”

Section: B Iron Power Loss In the Statormentioning

confidence: 99%

“…One of the earliest references discussing iron losses in this model might be attributed to Behrend, in 1896 [3]. When secondary effects are to be taken into account, the model can be extended with a chain of LR-branches to consider higher order harmonics, extra resistors to account for eddy-current power dissipation, and/or saturable inductors (where more recent references [4], [5], and [6] are but a representative sample). Models based on the equivalent circuit achieve some success by quantitatively describing iron losses; however, they fail to provide information on where they are concentrated in the machine.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of power losses of an inverter-driven induction machine with its experimental validation

Hernandez-Aramburo

Green

Smith

2003

IEEE Trans. on Ind. Applicat.

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Abstract-Detailed power loss distribution in induction machines is assessed using time-stepped finite-element analysis coupled to circuit equations of an inverter. Losses are examined for various load conditions. Iron losses are largely unexplored and so particular attention is paid to them here. The simulation has revealed the division between ohmic, hysteresis, classic eddy-current, and anomalous losses; and the distribution in the frequency spectrum between fundamental, slotting, and multiples of the switching frequency. Insight is also gained into the spatial location of the loss. Experimental validation is provided for several fundamental frequencies from full-load to light-load conditions. Index Terms-Efficiency, finite element (FE), inverter-driven induction machines, iron losses, power losses, variable-speed drives.

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“…The behavior of anomalous loss [calculated from (6)] against the fundamental frequency is shown in Fig. 5.…”

Section: B Iron Power Loss In the Statormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of power losses of an inverter-driven induction machine with its experimental validation

Hernandez-Aramburo

Green

Smith

2003

IEEE Trans. on Ind. Applicat.

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“…However at lower supply frequencies, the ratio between fundamental and total RMS values for both voltages and currents increase leading to a higher THD, and hence more significant harmonic iron and copper losses. Stray load losses are also influenced by the VFC supply [15]. Because the stray load loss is relatively small, it is difficult to measure.…”

Section: Performance Analysis and Test Resultsmentioning

confidence: 99%

Implementation and performance analysis of an elevator electric motor drive system

Osama

Abdul_Azim

2008

2008 12th International Middle-East Power System Conference

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The focus of this paper is the implementation and performance analysis of an elevator three-phase induction motor drive and its comparison to the traditional dual stator winding line-supplied elevator motors. To carry-on this study, a scaled prototype elevator is designed and manufactured. The elevator system motion controller is implemented via a PLC. The elevator ASD (Adjustable Speed Drive) consists of a variable frequency converter driving the three-phase induction motor coupled to a gearbox. The implemented elevator motion control system is discussed in this paper. The per-phase equivalent circuit motor parameters and loss components are measured in case of variable frequency supply and compared to the 50-Hz sinsuoidal line supply case. The steady-state as well as dynamic performance of the elevator electric motor drive system is also evaluated.

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“…The process of energy conversion within the IMD converter and motor leads to the power losses in the motor windings and magnetic circuit, as well as the conduction and commutation losses [27] in the inverter. The motor losses are dominant in low power drives [5], [24] and become comparable to the inverter losses for medium-and high-power drives.…”

Section: Imd Power Loss Modeling and Identificationmentioning

confidence: 99%

Robust DSP-based efficiency optimization of a variable speed induction motor drive

Vukosavić

Levi

2003

IEEE Trans. Ind. Electron.

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This paper proposes a practical digital-signal-processor (DSP)-based algorithm for the online efficiency optimization of induction motor drives. The algorithm combines good features of the search control and loss-model-based control, while simultaneously eliminating their major drawbacks. It ensures very fast convergence without the need for any a priori knowledge of the motor loss-related parameters. The minimum loss operating point is decided from a functional approximation of the motor and the power converter losses, in the form of a suitably defined loss function. The loss function parameters are obtained online from input power measurement and a dedicated identification routine acting in conjunction with the common drive control functions. Proposed online identification of the loss function parameters relies upon the signals and states readily available within the drive controller memory and does not involve the user entry nor the initialization procedure. The proposed controller is coded into a conventional low-cost 16-bit DSP and verified on a 2.2-kW induction motor drive prototype. Index Terms-Digital signal processors (DSPs), induction motor drives (IMDs), minimum energy control, power conversion.

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Loss modeling of converter induction machine system for variable speed drive

Cited by 44 publications

References 8 publications

Assessment of power losses of an inverter-driven induction machine with its experimental validation

Assessment of power losses of an inverter-driven induction machine with its experimental validation

Implementation and performance analysis of an elevator electric motor drive system

Robust DSP-based efficiency optimization of a variable speed induction motor drive

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