Selection of the flux reference for induction machine drives in the field weakening region

Xu, X.; Novotny, D.W.

doi:10.1109/28.175288

Cited by 194 publications

(69 citation statements)

References 4 publications

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“…Similarly, Figure 3 shows that the flux tracking error e 2 =φ 2 − φ 2 r = 0 for all four loading conditions. And Figure 4 shows that currents in phases one and two do not change for all four loading conditions, as expected, since flux regulation is tantamount to Figure 4 shows that regardless of the load situation, current does not exceed the allowable value of 1.5i rated [25] where i rated for this motor is 12.5 Arms. The peak phase current achieved is less than 16 Arms, which is less than the allowable current.…”

Section: Simulationmentioning

confidence: 55%

Robust Control for a Class of Bilinear Systems with Application to Induction Motor

Akpan

2003

Electric Power Components and Systems

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A robustness proof for a class of uncertain bilinear systems is given. The full order model of an induction motor is used as a demonstration example. Motor parameters are not assumed to be constant or well known. To eliminate the back and forth coordinate transformations between the rotor and stator coordinates, vector control is not used. The rotor flux is not measured but estimated. The speed and flux track arbitrary reference signals. The only requirement on the reference signals is that they are continuous so that their first derivatives are bounded.

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Section: Simulationmentioning

confidence: 55%

Robust Control for a Class of Bilinear Systems with Application to Induction Motor

Akpan

2003

Electric Power Components and Systems

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“…This method is not the best option for the zone with flux weakening, because it does not provide a maximum electromagnetic torque and it can be used only for drive systems with no special requests considering the dynamic behavior (pumps, fans etc.) [17].…”

Section: A First Casementioning

confidence: 95%

An efficient method for flux weakening control of an induction motor drive system

Stanescu

Nicolae

Bojoi

2014

3rd International Symposium on Environmental Friendly Energies and Applications (EFEA)

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The paper presents a speed-sensorless induction motor drive system operated into deep flux weakening region. An efficient direct control method based on the stator flux control is detailed. The speed-sensorless proposed algorithm is based on the induction motor's mathematic model and is suitable for low cost industrial applications. Simulations and experimental results based on this algorithm are also presented. The experimental tests were performed based on a dSPACE DS 1103 platform controlling an inverter fed 4 kW induction motor.

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“…Several papers about this issue were presented for drives fed by traditional VSI [13]- [18]. According to these field weakening algorithms, the optimal flux value of the motor should be updated by means of look-up tables or explicit expressions containing the motor parameters and quantities such as the motor speed, the motor currents, the dc-link voltage and the requested torque.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an induction motor drive for high speed operation based on matrix converter

Casadei

Mengoni

Serra

et al. 2007

2007 European Conference on Power Electronics and Applications

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The control scheme of a speed-sensorless induction motor drive fed by a matrix converter is presented. The proposed scheme allows the motor to exploit the maximum torque capability at any speed, shows a moderate dependence on the motor parameters, and a fast torque response, even in the fieldweakening speed range. The behaviour of the matrix converter is assessed by means of experimental results. IntroductionInduction motor drives fed by Matrix Converter (MC) can theoretically offer better performance than traditional drives based on voltage source inverters [1]. The advantages that are often cited are the compactness, the bidirectional power flow and the higher current quality. The input currents are sinusoidal and the power factor is near unity. Furthermore, braking resistances are not necessary from a theoretical point of view, since the power flow during braking can be reverted, thus leading to a regenerative operation.However, the use of MC poses some problems. First of all, to obtain a good quality of the output currents, the input voltages should be constantly measured in order to adapt the duty-cycles of the output voltages in presence of input voltage harmonics or disturbances, thus risking system instability,[2], [3]. Secondly, MC bidirectional switches cause an higher voltage drop compared to VSI power switches, since the output current has to pass through two components in series, usually an IGBT and a diode. In addition, the switch commutation is a complex process that introduces dead-times similar to those of voltage source inverters. These converter nonlinearities, together with the sensor offsets, could affect the estimation of the voltage applied to the load [4], [5].Finally, some studies have shown that the quality of the input current deteriorates if the source voltage is unbalanced or distorted. The same happens if the load currents are unbalanced or distorted [6].All these aspects should be taken into account when assessing the performance of an electric motor drive fed by a MC. Some papers describing drives based on MC have already been presented. Some studies have been made to transfer the existing control techniques for voltage source inverters to MCs, such as constant V/Hz, field-oriented control and direct torque control [7]- [12].Electric drives are often requested to deliver constant power at speed higher than the rated one. However so far the performance of drives fed by MC and operating in the field-weakening region has not been examined in details.When the induction motors are used for applications at high speed, it is desirable to retain the maximum torque capability in the field weakening region. Several papers about this issue were presented for drives fed by traditional VSI [13]- [18]. According to these field weakening algorithms, the optimal flux value of the motor should be updated by means of look-up tables or explicit expressions containing the motor parameters and quantities such as the motor speed, the motor currents, the dc-link voltage and the requested torque. However,...

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Selection of the flux reference for induction machine drives in the field weakening region

Cited by 194 publications

References 4 publications

Robust Control for a Class of Bilinear Systems with Application to Induction Motor

Robust Control for a Class of Bilinear Systems with Application to Induction Motor

An efficient method for flux weakening control of an induction motor drive system

Assessment of an induction motor drive for high speed operation based on matrix converter

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