Novel Flux-Weakening Control of an IPMSM for Quasi-Six-Step Operation

Choi, Gi-Young; Kwak, Mu-Shin; Kwon, Tae-Suk; Sul, Seung-Ki

doi:10.1109/tia.2008.2006305

Cited by 179 publications

(71 citation statements)

References 16 publications

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“…(12) is consistent with the voltage limitation proposed in [19]. Under the assumption of a single harmonic component in the zero-sequence circuit, the maximum value of the dq voltage references can be expressed as:…”

Section: Limitation (Vl-pwm)supporting

confidence: 81%

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region

Sandulescu

Meinguet

Kestelyn

et al. 2014

IEEE Trans. Power Electron.

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Section: Limitation (Vl-pwm)supporting

confidence: 81%

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region

Sandulescu

Meinguet

Kestelyn

et al. 2014

IEEE Trans. Power Electron.

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“…The MMF of rotor PMs can be assumed as square waveform, and can be expressed in the Fourier series, as given in Equation (8).…”

Section: Air-gap Flux Generated By Rotor Pmsmentioning

confidence: 99%

“…Therefore, the air-gap flux density generated by rotor PMs can be obtained by multiplying Equations (8) and (11), as given in Equation (12).…”

Section: Air-gap Flux Generated By Rotor Pmsmentioning

confidence: 99%

“…Fixed PM excitation is one major drawback of PM machines which means that the air-gap flux cannot be easily regulated as in the EEMs by controlling the excitation current. A well-known flux weakening method of PM machines is to apply negative d-axis current, but the voltage drop involved with the d-axis current reduces the output torque and efficiency accordingly [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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A Novel DC-Coil-Free Hybrid-Excited Machine with Consequent-Pole PM Rotor

Wang

Niu

2018

Energies

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This paper proposes a new DC coil free hybrid excited machine concept, which has no external field windings. The technical novelty is the integration of field windings and armature windings. DC bias current is injected into the excitation and the field windings in the traditional hybrid excited machine are eliminated. Compared with traditional hybrid-excited machines with additional field windings, the proposed machine can realize a higher slot utilization ratio, hence achieve a higher torque density and a wider flux adjusting range. Another advantage of the proposed machine is that the voltage drop associated with flux regulation is small due to the small DC resistance, and the torque generating capability at the flux regulating region can be improved accordingly. The rotor is specifically designed with magnet-iron sequences and a consequent-pole, in which the permanent magnet and iron pole are alternatively employed. A bi-directional flux modulating effect can be achieved, which can contribute to the magnetic coupling in the air-gap. Analytical derivation is used to describe the operating principle, and the proposed machine was optimally designed using the Tabu search algorithm. A prototype was made, and its performances investigated through experimental tests.

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“…There have been many researches on the flux-weakening control [1]- [6] regarding PMSM drives. The main role of the flux-weakening controller is the determination of the current reference in the flux-weakening region.…”

Section: Introductionmentioning

confidence: 99%

Improved speed control of Permanent Magnet Synchronous Machine at overmodulation region

Kwon

Kim

Kwon

et al. 2012

2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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In Permanent Magnet Synchronous Machine (PMSM) drives, linear region, which is inside the inscribed circle of the voltage hexagon in the voltage plane, is mainly used for the stable operation. To enhance torque capability under the limited input DC link voltage, the region outside the inscribed circle of the voltage hexagon, known as overmodulation region, can be exploited in the flux-weakening operation. However, the operation of drive system in the overmodulation region cannot be free from the degradation of speed control performance. This paper presents investigations on control issues in the overmodulation region and proposes an algorithm for improving the speed control performance in the overmodulation region. The effectiveness of the proposed method is verified by computer simulations and experiments.

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Novel Flux-Weakening Control of an IPMSM for Quasi-Six-Step Operation

Cited by 179 publications

References 16 publications

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region

A Novel DC-Coil-Free Hybrid-Excited Machine with Consequent-Pole PM Rotor

Improved speed control of Permanent Magnet Synchronous Machine at overmodulation region

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