Variable Frequency Inverter with Sinusoidal Voltage Outputs Using Rotating Coordinate Transformation.

Nakano, Hirotami; Jibiki, Masayuki; Nabae, Akira; Okamura, Yositsugu

doi:10.1541/ieejias.115.735

Cited by 8 publications

(7 citation statements)

References 1 publication

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“…Where, J is a Jacobian matrix that is defined as (32). In this offline nonlinear least-squares method, a pseudo-inverse matrix of the Jacobian matrix, expressed as (33), is used.…”

Section: Saving Memory Methods Of Disturbance Torque Hybrid Observermentioning

confidence: 99%

“…The input and output frames of the d-q PI current control are different from them of the α-β sinusoidal current control. In order to analyze the performance of d-q PI current control, this paper uses the rotating coordinate transformation e jω re t and e − jω re t (31) (32) . The d-q PI current control is equivalently converted on the α-β stationary frame.…”

Section: Current Control System On α-β Stationary Framementioning

confidence: 99%

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Robust Positioning Control Using α-β Stationary Frame Current Controller and Disturbance Torque Hybrid Observer

et al. 2017

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In the field of high precision positioning control, the position servo system must be highly robust against disturbance torque. A Permanent Magnet Synchronous Motor (PMSM) has various torque ripple components that degrade control performance. A portion of the torque ripple is caused by the harmonic current. The torque ripple can be suppressed using a highly robust current control system. The remaining torque ripple is defined as the disturbance torque and is compensated for using a Disturbance OBserver (DOB). However, it is very difficult for a DOB to perform the appropriate compensation because it uses a low-pass filter to reduce noise. To obtain highly robust performance, this paper proposes a new position servo system using a disturbance torque hybrid observer and a current control system in the α − β stationary frame. In addition, this paper uses the torque ripple equation instead of a torque ripple table so as to reduce the amount of Digital Signal Processor (DSP) memory. The effectiveness of the proposed position servo system is confirmed using numerical and experimental results.

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“…Where, J is a Jacobian matrix that is defined as (32). In this offline nonlinear least-squares method, a pseudo-inverse matrix of the Jacobian matrix, expressed as (33), is used.…”

Section: Saving Memory Methods Of Disturbance Torque Hybrid Observermentioning

confidence: 99%

Section: Current Control System On α-β Stationary Framementioning

confidence: 99%

Robust Positioning Control Using α-β Stationary Frame Current Controller and Disturbance Torque Hybrid Observer

et al. 2017

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“…Yano's idea was extended to the parallel processing of two components by the same two filters in parallel form by Takada and his colleagues in 1988 in relation to active filtering and its applications [4]. Potential usefulness of the filter with phase converters/vector rotators has been demonstrated through several other applications of three-phase power systems such as control of sinusoidal inverter expected to produce sinusoidal power independently on loads by Okamura, Nakano, and Nabae [5][6][7]11], realization of a series active capacitance capable of compensating voltage drop caused by source impedances by Nabae and colleagues [8], and compensation of current in nonsinusoidal unbalanced three-phase systems by Tanaka and colleagues [9]. Order of the employed interior parallel filters was first in almost all previous applications, second on rare occasion.…”

Section: Introductionmentioning

confidence: 99%

“…Analyses rather than intuitive discussions for the filter with phase converters/vector rotators have already been reported [10][11][12][13][14][15]. According to the analyses, the filter has the following attractive filtering properties, which cannot be obtained by ordinary filters.…”

Section: Introductionmentioning

confidence: 99%

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A new three‐input/output characteristic‐varying filter in the D‐module for direct processing of three‐phase signals

Shinnaka

2003

Electrical Engineering Japan

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SUMMARYThis paper proposes a new three-input and three-output characteristic-varying filter in the D-module for direct processing of three-phase signals, which are becoming indispensable for effective active compensation of threephase power such as harmonics current, negative phase current, reactive power, and varying voltage compensations. The filter in the D-module can show different filtering characteristics to positive, negative, and zero phase components of three-phase signals and can allow direct processing of the signals based on frequency polarities. The filter in the D-module can also change dynamically its filtering characteristics by simply injecting a shift-signal to itself. These filtering effects are obtained in a very simple manner using the D-module. A new unified analysis of attractive general characteristics of the proposed filter in the D-module is given for its easy designs and realizations as well. Effectiveness of the analysis and usefulness of the filter in the D-module are newly examined and confirmed through experiments. The newly proposed filter in the D-module has potential regarding a variety of three-phase signal filtering applications.

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Characteristic‐varying systems in the D‐Module: Their properties of existence, realization, and stability

Shinnaka

2003

Electrical Engineering Japan

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SUMMARYSignal processing based on frequency polarity has been attracting wide attention due to its potential applications to industry. It is popular to employ two vector rotators for such signal processing. However, it has very recently been reported that an equivalent signal processing effect can be attained in a much simpler manner using two-input two-output filters in the D-module. This paper further investigates a class of characteristic-varying systems in the D-module, which contains the filters in the D-module as a special case, and gives new analytical results on their properties from the viewpoints of existence, realization, and stability. If the results are applied to filter problems, n-th order filters in the D-module in new forms can be easily and directly obtained, whose stability and response equivalent to the associated filters with vector rotators are guaranteed. If the results are applied to AC motor modeling problems, dynamic models and block diagrams of AC motors in general reference frame are easily and directly obtained. Very general and useful analyses are given for a newly proposed class of characteristic-varying systems in the D-module that have potential usefulness in various industrial applications including control of magnetic bearing system, analyses and active compensations of power systems, and sensorless drives of AC motors.

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Variable Frequency Inverter with Sinusoidal Voltage Outputs Using Rotating Coordinate Transformation.

Cited by 8 publications

References 1 publication

Robust Positioning Control Using <i>α</i>-<i>β</i> Stationary Frame Current Controller and Disturbance Torque Hybrid Observer

Robust Positioning Control Using <i>α</i>-<i>β</i> Stationary Frame Current Controller and Disturbance Torque Hybrid Observer

A new three‐input/output characteristic‐varying filter in the D‐module for direct processing of three‐phase signals

Characteristic‐varying systems in the D‐Module: Their properties of existence, realization, and stability

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