Field-oriented control of an induction machine in the field-weakening region with DC-link and load disturbance rejection

Seibel, B.J.; Rowan, T.M.; Kerkman, R.J.

doi:10.1109/28.649971

Cited by 50 publications

(7 citation statements)

References 5 publications

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“…The IPM machines' electromagnetic torque may be estimated by modifying Equation (1) to include the flux components expressed in Equation (2). In addition, the electromagnetic torque of a squirrel-cage IM can be estimated via Equation (3), which is derived for stator flux-oriented IM drive [27,28]. In Equation (3), the superscript "es" denotes that the quantity is in the synchronous reference frame orientated to the stator flux…”

Section: Performance Comparisonmentioning

confidence: 99%

Torque Capability Comparison of Induction and Interior Permanent Magnet Machines for Traction Applications

Gündoğdu

2023

Gazi University Journal of Science

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This paper investigates the torque generating capabilities and performance comparison of induction machines (IM) and interior-permanent magnet (IPM) machines for electric vehicle (EV) traction applications. Electromagnetic performance characteristics, such as torque, torque ripple, air-gap flux density, etc. are quantitatively compared by changing the level of electric loading. Other performance characteristics such as saturation factor, power losses, efficiency, etc. including the flux-weakening capability and efficiency map have also been compared. For calculations of the electromagnetic performance characteristics, 2D time-stepping finite element analysis (FEA) has been employed. It has been revealed that due to the reduction in torque components of IPM machine as a consequence of magnet demagnetization, it cannot generate toque as high as IM under overloading operating conditions. A thorough review of the literature on comparative studies on the electrical machines used in EV or Hybrid EV (HEV) applications is also included.

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Section: Performance Comparisonmentioning

confidence: 99%

Torque Capability Comparison of Induction and Interior Permanent Magnet Machines for Traction Applications

Gündoğdu

2023

Gazi University Journal of Science

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“…DC-link voltage shortage may also be caused by a large demand of active power, e.g., by fast accelerations [547] or by other loads connected to the dc-link or power supply (if any) [169]. Alternatively, if there is not an increment in the active-power demand, v dc shortage can be produced when a failure occurs in the power supply, assuming that the machine works as a motor [169,466,467,548,549]; e.g., a voltage sag in the grid [467,548,549].…”

Section: Causes Of Dc-link Voltage Shortagementioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

et al. 2022

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Multiphase drives offer enhanced fault-tolerant capabilities compared with conventional three-phase ones. Their phase redundancy makes them able to continue running in the event of faults (e.g., open/short-circuits) in certain phases. Moreover, their greater number of degrees of freedom permits improving diagnosis and performance, not only under faults affecting individual phases, but also under those affecting the machine/drive as a whole. That is the case of failures in the dc link, resolver/encoder, control unit, cooling system, etc. Accordingly, multiphase drives are becoming remarkable contenders for applications where high reliability is required, such as electric vehicles and standalone/off-shore generation. Actually, the literature on the subject has grown exponentially in recent years. Various review papers have been published, but none of them currently cover the state-of-the-art in a comprehensive and up-to-date fashion. This two-part paper presents an overview concerning fault tolerance in multiphase drives. Hundreds of citations are classified and critically discussed. Although the emphasis is put on fault tolerance, fault detection/diagnosis is also considered to some extent, because of its importance in fault-tolerant drives. The most important recent advances, emerging trends and open challenges are also identified. Part 1 provides a comprehensive survey considering numerous kinds of faults, whereas Part 2 is focused on phase/switch open-circuit failures.

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“…According to (16), if the motor parameters in Table 1 are applied, the actual dq current when θ error is within [−7π/18 and 7π/18] is shown in Fig. 8.…”

Section: Field Orientation Error Effect Analysis and Selfcorrectionmentioning

confidence: 99%

“…Thus, a threshold should be kept between the usable voltage and the maximum inverter output voltage, to guarantee the dynamic response of current regulators. Seibel et al [16] stated that a threshold of 3% maximum inverter output voltage is required, while Sahoo et al [17, 18] proposed a maximum voltage usage ratio of 96.34%. In the six‐step operation, motor voltage amplitude is fixed, and the voltage usage ratio is 100%.…”

Section: Introductionmentioning

confidence: 99%

Current closed‐loop control and field orientation analysis of an induction motor in six‐step operation for railway applications

Fang

Tian

et al. 2019

IET Power Electronics

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In railway traction drive systems, six-step operation is widely used for motors in a flux-weakening region. Traditional vector control algorithms in six-step operation cannot work effectively due to the limitation of a single degree of freedom. This paper analyses the dq current coupling relationship when voltage amplitude is limited and applies a current closed-loop control strategy in six-step operation. This paper proposes a proper switching control strategy to achieve a dualmode control for induction motors in a full-speed region. The accuracy of field orientation is affected by changes in motor parameters and plays a key role in current control precision. This paper analyses the effect of field orientation error on motor six-step operation. It is found that the proposed current closed-loop control strategy can correct the field orientation error and guarantee the motor current to track the reference precisely. A case study of a 5.5 kW experimental platform is presented to validate the control schemes. Nomenclature , d-axis and q-axis stator voltage , d-axis and q-axis stator current Stator resistance Stator self-inductance Total leakage factor Stator angular velocity Maximum stator current vector amplitude Maximum stator voltage vector amplitude Inverter DC-link voltage Rotor flux Electromagnetic torque Rotor time constant Rotor self-inductance Mutual inductance Motor pole pairs Differential operator. Rated d-axis current _ Feed-forward compensatory d-axis voltage _ Feed-forward compensatory q-axis voltage Stator voltage vector Rotor angular velocity Motor base angular velocity Stator current vector amplitude δ Field orientation angle * Subscript denotes instruction value ^ Subscript denotes estimated value

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Field-oriented control of an induction machine in the field-weakening region with DC-link and load disturbance rejection

Cited by 50 publications

References 5 publications

Torque Capability Comparison of Induction and Interior Permanent Magnet Machines for Traction Applications

Torque Capability Comparison of Induction and Interior Permanent Magnet Machines for Traction Applications

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

Current closed‐loop control and field orientation analysis of an induction motor in six‐step operation for railway applications

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