著者

森本 茂雄 河本 啓助 武田 洋次

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.122, no.7, pp.722-729, 2002-07-01 (Released:2008-12-19)

参考文献数

12

被引用文献数

21 20

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In most variable-speed drives of PMSM, some type of shaft sensor such as an optical encoder or resolver is connected to the rotor shaft. However, such sensor presents several disadvantages such as drive cost, machine size, reliability and noise immunity. Therefore, the sensorless control of PMSM is desired and various sensorless control strategies have been investigated. This paper presents a novel sensorless control strategy for an interior permanent magnet synchronous motor (IPMSM). A new model of IPMSM using an extended electromotive force (EMF) in the rotating reference frame is utilized in order to estimate both of position and speed. The extended EMF is estimated by the least-order observer, and the estimation position error is directly obtained. The proposed scheme corrects the estimated position and speed so that the estimation position error becomes to be zero. The proposed system is very simple and the design of the controller is easy. Several drive tests are carried out and the experimental results show the effectiveness of the proposed sensorless control system.

著者

榎倉 浩志 井上 征則 森本 茂雄 真田 雅之 會澤 敏満 高木 隆志

出版者

一般社団法人 電気学会

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.142, no.5, pp.393-399, 2022-05-01 (Released:2022-05-01)

参考文献数

15

---

This paper proposes a novel torque controller in a direct torque control (DTC) system for permanent magnet synchronous motors (PMSM). A reference flux vector calculation (RFVC) DTC uses a PI controller for torque control and can be applied with a PWM voltage-fed inverter. The RFVC DTC's controller can be designed using classical control theory with a linear transfer function by analyzing the relationship between the torque, torque angle, rotor speed, and angular frequency of the stator flux-linkage vector. In contrast, the conventional equivalent modeling method is only applicable with high control gain. At a lower control gain, the convergence performance degrades in the conventional model. Therefore, the torque control characteristics are improved by the proposed system, which is based on the decoupling rotor speed in the torque control system. Simulation and experimental results confirm the validity of the proposed system.

著者

清水 悠生 森本 茂雄 真田 雅之 井上 征則

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.43, pp.130-137, 2017-03-31 (Released:2018-10-28)

参考文献数

8

被引用文献数

1

---

Nowadays, interior permanent magnet synchronous motors (IPMSMs), generally driven by PWM inverters, are mainly utilized as the traction motors of eco-friendly vehicles. As a result of the carrier harmonics of the input current by PWM inverters, harmonic losses of IPMSMs become higher than those of IPMSMs with ideal current input. This paper discusses the characteristics of the proposed double-layered IPMSM and the conventional single-layered IPMSM with current inputs where the PWM carrier frequencies were set to 5, 10, and 20 kHz, respectively, which reveals the influence of various carrier frequencies on the performance of IPMSMs.

著者

吉川 祐一 村上 浩 森本 茂雄

出版者

一般社団法人 電気学会

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.136, no.2, pp.126-133, 2016-02-01 (Released:2016-02-01)

参考文献数

12

被引用文献数

2 1

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This paper proposes a new structural dual rotor SPMSM (Surface Permanent Magnet Synchronous Motor) using ferrite magnets having high torque density, small size, and low noise. In addition, the advantages of having a toroidally winding and adual rotor are examined through analysis, and it is confirmed that the torque density of the proposed motor is competitive to the rare-earth IPMSM (Interior Permanent Magnet Synchronous Motor).

著者

河本 啓助 森本 茂雄 武田 洋次

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研究会論文誌 (ISSN:09167269)

巻号頁・発行日

vol.26, no.2, pp.168-174, 2001-03-01 (Released:2010-03-16)

参考文献数

7

---

This paper presents a sensorless control of IPMSM using an estimated axis error on the basis of an extended emf. In the sensorless control method using a rotational axis model, the approximated model is generally used, thus some problems exist in the sensorless control at IPMSM with a large saliency ratio. In this paper the use of a rotational axis model using an extended emf can accomplish a sensorless control on the basis of an IPMSM model without any approximation. Moreover to confirm the effectiveness of the proposed method this paper shows simulation results of some kinds of drive situations and IPMSMs with various saliency ratios.

著者

十時 詠吾 山口 信一 田中 敏則 伊藤 一将 大穀 晃裕 森本 茂雄

出版者

一般社団法人 電気学会

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.141, no.10, pp.763-770, 2021-10-01 (Released:2021-10-01)

参考文献数

34

被引用文献数

1

---

This paper presents a new configuration for the concentrated windings of permanent magnet motors in order to reduce the torque ripple. There are limited choices for the concentrated windings in conventional permanent magnet motors when selecting the numbers of poles and slots, which results in winding factors for harmonics that cannot be zero and the corresponding torque ripple remains. Unlike conventional concentrated-winding motor, whose teeth are all wound with one coil, the proposed concentrated-winding motor has some teeth with multiple coils wound around. The number of turns for each coil can be optimized to reduce its winding factors for harmonics to nearly zero so that the corresponding torque ripple could be significantly reduced. Prototypes of the conventional and proposed motors were constructed, and the experimental results are compared. Simulation and experimental results confirm the torque reduction effect of the proposed concentrated-winding motor.

著者

森本 茂雄

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.37, pp.217-220, 2012

著者

森本 茂雄

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.37, pp.217-220, 2012-03-31 (Released:2013-04-12)

著者

東 聖 伊藤 大介 石田 貴仁 岩田 明彦 菅原 賢悟 森本 茂雄

出版者

一般社団法人 電気学会

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.139, no.5, pp.495-502, 2019-05-01 (Released:2019-05-01)

参考文献数

15

被引用文献数

2

---

This paper proposes countermeasures to reduce radiated AM radio frequency noise caused by the VVVF (variable-voltage/variable-frequency) inverter system incorporated with an electric railway car. First, the common-mode current flowing through a cooling fin earth line is studied, and the connection change of the line shows good attenuation of the 1.26MHz resonance component. Second, the common-mode current flowing though the motor earth line with a capacitor is focused upon, and the modified connections of the line to the outside of the input common-mode core achieves fine noise reduction in the range from 500kHz to 1.5MHz. In such cases, the existing input common-mode core is utilized to establish the impedance, which is efficient in both the noise reduction and the countermeasure cost reduction. Finally, a current simulation model which is paid attention to the AM radio frequency range is examined with the measured impedance data of the VVVF inverter system. The currents flowing thorough the cooling fin earth line and the motor earth line is simulated, and these simulated currents show good agreement with the measured one.

著者

山田 耕司 森本 茂雄 真田 雅之 武田 洋次

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.31, pp.187-187, 2006-03-31 (Released:2010-03-12)

参考文献数

2

著者

谷 勇佑 森本 茂雄 真田 雅之

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.36, pp.179-179, 2011-03-31 (Released:2012-02-15)

参考文献数

1

著者

森本 茂雄 上野 智広 武田 洋次

出版者

一般社団法人 電気学会

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.114, no.6, pp.668-673, 1994-06-20 (Released:2008-12-19)

参考文献数

8

被引用文献数

9 27

---

Permanent magnet synchronous (PM) motors are widely used for industrial applications. In the PM motor drives, it is difficult to achieve the wide speed and constant power operations, which are desired in traction and spindle drives, because the field-flux of PM motor is uncontrollable and as a result the field-weakening control is not available. The air-gap flux, however, can be weakened by the demagnetizing effects due to the d-axis armature reaction (flux-weakening control). In this paper, the wide speed control method of the interior PM (IPM) motor, which includes the maximum torque-per-ampere control and the flux-weakening control, is proposed. In the high-speed flux-weakening region, there are some cases where the control performances become worse and the control system becomes unstable because of the saturation of current regulator and the effects of magnetic saturation. The high performance current regulator compensating these effects is also proposed. The control performances of the proposed control system are confirmed by the several drive tests with respect to the prototype IPM motor.

著者

富樫 涼 井上 征則 森本 茂雄

出版者

電気学会

雑誌

電気学会研究会資料. MD

巻号頁・発行日

vol.2014, no.74, pp.69-74, 2014-07-09

著者

森本 茂雄 畠中 啓太 童 毅 武田 洋次 平紗 多賀男

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.112, no.3, pp.292-298, 1992

被引用文献数

22 9

---

Permanent magnet synchronous (PM) motors are widely used for industrial applications. In traction and spindle drives, the constant power operation and wide speed range are desirable. With DC motor drives, these are achieved by the appropriate reduction of the field current as the speed increases. In the PM motor, the direct control of magnet flux is not available. The air-gap flux, however, can be weakened by the direct axis armature reaction. This control technique is called "flux-weakening" instead of "field-weakening". This paper describes a variable speed drive system of PM motor for the constant power and wide speed range operations. In the proposed control system, a novel flux-weakening technique is applied. The current vector is controlled so that the maximum torque per armature current can be obtained at low speeds and the terminal voltage is kept within its limited value at high speeds. The control performances are examined by the simulations and the experimental results.

著者

森本 茂雄 武田 洋次 平紗 多賀男

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.113, no.11, pp.1330-1331, 1993

被引用文献数

31 14

著者

深澤 信之 森本 茂雄 黒沢 努 山下 礼士 関 千納美

出版者

国立研究開発法人 科学技術振興機構

雑誌

情報管理 (ISSN:00217298)

巻号頁・発行日

vol.50, no.12, pp.860-862, 2008 (Released:2008-03-01)

参考文献数

9

被引用文献数

1 1 1