9 0 0 0 OA デッドタイムによる誤差を生じない新しいPWM 法の提案
- 著者
- 岡本 浩平 青木 太誠 茂木 進一 道平 雅一 西田 保幸
- 出版者
- パワーエレクトロニクス学会
- 雑誌
- パワーエレクトロニクス学会誌 (ISSN:13488538)
- 巻号頁・発行日
- vol.40, pp.209, 2014-03-31 (Released:2016-04-08)
- 参考文献数
- 3
- 被引用文献数
- 1 1
1 0 0 0 OA ウェーブレット変換による三相PWM 変換器の時間周波数解析
- 著者
- 井本 涼太 茂木 進一 道平 雅一 西田 保幸
- 出版者
- パワーエレクトロニクス学会
- 雑誌
- パワーエレクトロニクス学会誌 (ISSN:13488538)
- 巻号頁・発行日
- vol.40, pp.176-181, 2014-03-31 (Released:2016-04-08)
- 参考文献数
- 7
- 被引用文献数
- 10 13
A three-phase voltage-fed converter operated by a two-phase PWM scheme offers relatively high ac voltage, low switching times, and low switching losses in comparison to that operated by a three-phase PWM scheme. However, the harmonics involved in the ac-side voltages and currents produced in the two-phase PWM scheme are distributed over a wide frequency range, which can be a significant drawback depending on its applications. Therefore the authors examine the problem using wavelet transform.
1 0 0 0 OA 単相電流形PWMインバータの新しい制御方式
- 著者
- 平地 克也 西田 保幸 中岡 睦雄
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- 電気学会論文誌D(産業応用部門誌) (ISSN:09136339)
- 巻号頁・発行日
- vol.117, no.12, pp.1535-1536, 1997-11-20 (Released:2008-12-19)
- 参考文献数
- 6
- 被引用文献数
- 3 2
1 0 0 0 OA 3相昇降圧形高力率スイッチングコンバータ
- 著者
- 西田 保幸
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- 電気学会論文誌D(産業応用部門誌) (ISSN:09136339)
- 巻号頁・発行日
- vol.115, no.4, pp.410-419, 1995-03-20 (Released:2008-12-19)
- 参考文献数
- 13
The harmonic pollution caused by ac-to-dc converters has been our great concern. To overcome the problem, several Power-Factor-Correction (PFC) converters have been developed and applied in practice in recent years.However, several power converter systems, such as motor drive system with a wide V/F control range, uninterruptible power supply system, and dc power supply system with an universal input voltage range, require an ac-to-dc converter or an off-line converter (pre-regurator) with a wide output-voltage control range to obtain high efficiency. But the most conventional PFC converters employ a Voltage-Fed or Current-Fed type topology and they have lower or upper limitation of the output-voltage control range. Thus, they do not realize sufficiently high system efficiency.On the other hand, a Buck/Boost converter has a wide control range of the output voltage and acts PFC operation under an appropriate control technique. Thus, the study of a possibility about the Buck/Boost ac-to-dc converter with PFC and a wide output-voltage control range is important to realize harmonic-free and efficient power conversion systems.In this paper, the author proposes a three-phase bridge-type ac-to-dc converter system with a high input power factor and a wide output-voltage control range. The controller of the proposed system includes following two new techniques. One is the “Pulse-Space-Modulation” to compensate modulation errors in conventional Pulse-Width-Modulation caused by dc current ripples or fluctuations of the current pulse amplitude. The other is a switching pulse pattern generator, using the idea of equivalent pulse current source for the bridge, to simplify the pulse pattern generation process.In the following, the paper describes the proposed converter system, the control and modulation principles, and experimental results that show the reliability and usefulness of the proposed Buck/Boost converter system. Finally, the paper concludes the contents of this paper.
1 0 0 0 OA 次世代パワー半導体時代に相応しい交流/直流電力変換器のための制御・変調方法の探索
一般に,交流/直流電力変換器は,新幹線,ハイブリッド自動車,太陽光発電用パワーコンディショナなどの多くのアプリケーションで使用されている.そこで本研究では,交流/直流電力変換器に最適なパルス幅変調(Pulse Width Modulation; PWM)法を明らかにする.具体的には,高調波フィルタを接続しないモータドライブシステムには指令値シフト二相PWM法が,太陽光発電用パワーコンディショナや高調波フィルタを接続するモータドライブシステムにはパルス重畳二相PWM法が適していることを明らかにした.