Innovative Application Technologies of AC Motor Drive Systems

Kondo, Keiichiro; Kubota, Hisao

doi:10.1541/ieejjia.1.132

Cited by 44 publications

(12 citation statements)

References 16 publications

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“…In recent years, Permanent Magnet Synchronous Motors (PMSMs) are successfully being applied to various fields such as railway vehicle, electric vehicle (EV), hybrid electric vehicle (HEV), electric appliance or industry fields for their compactness, high power density and high efficiency (1) (2) . Vector control is a most commonly used control method to operate PMSMs for accurate torque control and fast torque response.…”

Section: Introductionmentioning

confidence: 99%

Position Estimation System for PMSM Position Sensorless Control in Inverter Overmodulation Drive

Kondo

Doki

2017

IEEJ Journal IA

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This study investigates compensation methods for harmonic components to realize PMSM position sensorless control in inverter overmodulation drive. While applying PMSMs as traction motor motors in an EV or HEV, operating PMSM in inverter overmodulation drive is an effective method to widen high-speed drive region of PMSM and achieve fast torque response when voltage saturates because it enable to utilize 27% higher fundamental voltage as compared to linear drive. In addition, position sensorless control is regarded as an important technique for adding a fail-safe function and downsizing of the drive system. However, the harmonic components which are inevitably generated in inverter overmodulation drive have negative effects on closed current control and position estimation systems.The key to realize position sensorless control in inverter overmodulation drive is an appropriate compensation for the harmonic components in the input voltage and input current of a the position estimator. There are several methods to achieve this, and differences in position estimation performance possibly exist among these methods.In this study, the compensation methods for harmonic components in overmodulation drive are compared, and a suitable compensation method for sensorless control is investigated through an experiment.

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Section: Introductionmentioning

confidence: 99%

Position Estimation System for PMSM Position Sensorless Control in Inverter Overmodulation Drive

Kondo

Doki

2017

IEEJ Journal IA

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“…Recently, an inverter-driven AC motor system has been widely used in many fields, and its applications range from home appliances to industrial applications from the viewpoint of global environmental problems (1)- (3) . Typically, controlling the compressor rotating speed in a residential airconditioner application with an inverter-driven AC motor system would allow for overall system optimization, which could significantly reduce energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Harmonics Reduction Control for the Input Current of Electrolytic Capacitor-less High-Power-Factor Inverter for IPMSM

et al. 2015

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This paper describes an inverter control method for reducing the input current harmonics and vibration in an electrolytic capacitor-less inverter for an interior permanent magnet synchronous motor (IPMSM). Typically, the back electromotive force (EMF) on an IPMSM is not sinusoidal and contains harmonics caused by the rotor structure, which leads to harmonic distortion in the motor control system and generation of harmonics in the input current. Moreover, the input current vibration occurs at the source side, which is caused by resonance with the line impedance and the DC-link capacitor.This paper proposes three control methods to reduce the current harmonics distortion and vibration. The first method filters out the harmonics of the feedback d-q axis current using a notch filter. The second method compensates the d-q axis voltage references to reduce the input current harmonics. To prevent the input current vibration, the third method adds a cancellation voltage pulse to the three-phase voltage reference of the inverter. The superior performance of these proposed methods are demonstrated through experimental results. The experimental results confirm that the proposed methods meet guideline EN61000-3-2.

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“…By series-stacking the requisite number of SMs, any desired multilevel ac voltage can be synthesized. This modular string architecture has become the basic building block for many converter topologies (2) (4)- (7) and is particularly appealing for use in HVDC transmission (8) (9) . Although attractive for dc/ac conversion, using conventional strings of cascaded SMs (or hybrid SM strings (10) (11) ) to perform dc/dc conversion has, to date, required a frontto-front (i.e.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of DC/AC and DC/DC Modular Multilevel Energy Conversion Processes

Kish

Lehn

2015

IEEJ Journal IA

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Using strings of cascaded submodules for multilevel dc/ac conversion has attracted considerable attention owing to the widespread popularity of the modular multilevel converter (MMC). Recently, it has been shown that such conventional submodule strings can be adapted to achieve single-stage dc/dc conversion. Although the modular string configurations for dc/ac and dc/dc conversion are similar, the underlying power transfer mechanisms employed by each differ significantly. This paper compares the dc/ac and dc/dc energy conversion processes for series-cascaded submodules and highlights their key similarities and differences. In addition, converter operation and control requirements for dc/ac and dc/dc conversion are discussed and compared. A capacitor voltage regulation scheme for dc/dc conversion is proposed, whereby vars generation can be arbitrarily allocated between the converter arms in order to maximize conversion efficiency. It is shown that single-stage dc/dc conversion can reduce converter cost and operating losses by up to 50% as compared to conventional cascaded dc/ac stages, i.e. dc/ac-ac/dc conversion.

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Innovative Application Technologies of AC Motor Drive Systems

Cited by 44 publications

References 16 publications

Position Estimation System for PMSM Position Sensorless Control in Inverter Overmodulation Drive

Position Estimation System for PMSM Position Sensorless Control in Inverter Overmodulation Drive

Harmonics Reduction Control for the Input Current of Electrolytic Capacitor-less High-Power-Factor Inverter for IPMSM

A Comparison of DC/AC and DC/DC Modular Multilevel Energy Conversion Processes

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