Proposal of 3-Phase Spectrum Analyzer based on Rotating Coordinate Transformations

Nakano, Hirotami; Aono, Yasuhisa; Naitoh, Masanobu; Kondou, Ryou; Eda, Hiroshi; Matsukawa, M.; Miura, Y.

doi:10.1541/ieejias.120.1277

Cited by 5 publications

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“…It was pointed out by Nakano and colleagues that the three-phase signal contains several positive and negative phase harmonics, and that the fifth negative phase harmonic is most dominant [18]. Figure 9 shows the threephase signal to be processed.…”

Section: Methodsmentioning

confidence: 99%

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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Section: Methodsmentioning

confidence: 99%

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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“…Subsequently, applications of the filter with vector rotators to other three-phase power systems have been reported by Nabae, Tanaka, and colleagues [10,11]. Nakano's group applied the filter with vector rotators to a spectrum analyzer for three-phase signal [12]. The first application of the filter with vector rotators to sensorless vector control of AC motors was by Degner and Lorenz in 1997 where it was used for estimating rotor position of a specific induction motor [13,14].…”

Section: Introductionmentioning

confidence: 99%

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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A new characteristics-varying two-input/output filter in D-module-designs, realizations and equivalence

Shinnaka¹

Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248)

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Proposal of 3-Phase Spectrum Analyzer based on Rotating Coordinate Transformations

Cited by 5 publications

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

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

A new characteristics-varying two-input/output filter in D-module-designs, realizations and equivalence

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