著者

近藤 圭一郎 結城 和明

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.125, no.1, pp.1-8, 2005 (Released:2005-04-01)

参考文献数

10

被引用文献数

3 6

---

The Pulse Generators or PGs are equipped to detect the rotor frequency of induction traction motors for the torque control in railway vehicle traction field. Eliminating PGs are preferable from the view points of increasing the reliability of the traction system, reduction of the both initial and maintenance cost and down-sizing induction traction motors. Expecting those merits, we have been studying to apply a sensor less control method to induction traction motor control. Prior to some reports of studies and tests to apply speed sensor-less strategy to railway vehicle traction, we lunched the ideas to apply the speed sensor-less control strategy and results of the studies and the tests. In this paper, we present the novel control method for railway vehicle traction and some results of theoretical study and tests.

著者

戸田 伸一 結城 和明 逸見 琢磨 安岡 育雄

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.123, no.11, pp.1314-1320, 2003 (Released:2004-06-18)

参考文献数

3

被引用文献数

2 2

---

We have developed a Re-adhesion control algorithm of traction inverter without any Motor speed sensors. In this paper, we are focusing on anti-slip control performance of this system. The influence of speed estimation delay is considered and a method to improve the delay is shown. Acceleration performance of the proposed system is same level as the one of current drive systems using speed sensors.

著者

熊井 巧 青山 真大

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.1, pp.67-75, 2022-01-01 (Released:2022-01-01)

参考文献数

22

被引用文献数

3

---

This paper presents a new technique for carrier harmonics utilization for field excitations and its experimental demonstration. The system is composed of a permanent magnet rotor structure with a wound-field and concentrated winding stator. An induction coil with a series connected capacitor and a field coil with a rectifier are installed on the rotor. The resonance frequency of the LCR series circuit is set to the carrier frequency. Experiments are conducted and the test results are demonstrated along with the driving characteristics.

著者

土屋 柚樹 赤津 観

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.1, pp.1-8, 2022-01-01 (Released:2022-01-01)

参考文献数

10

---

The switched reluctance motor (SRM) has generated considerable attention because of its lack of magnets and lower cost structure compared to the permanent magnet synchronous motor (PMSM) structure. In addition, SRM can achieve high speed rotation because of its simple structure and high robustness. However, SRM has lower torque density than that of PMSM. To increase the torque density in SRM, a grain-oriented electrical steel sheet (GO) can be applied as the stator and rotor materials. The magnetic characteristics of GO fluctuate depending on the angle between the rolling direction and magnetic flux direction. In a previous research, it was confirmed that three kinds of torques are output when the stator and rotor materials use GO. In this paper, three kinds of torques are explained, and a design concept of an SRM using GO is proposed. In addition, the static and dynamic torque characteristics of the proposed SRM are verified by simulation and experiment.

著者

福間 勝彦 中村 利孝 塚越 昌彦 竹内 活徳 松下 真琴

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.1, pp.26-32, 2022-01-01 (Released:2022-01-01)

参考文献数

24

---

Application of large synchronous motors started in the early 90; currently the synchronous motors (SMs) are being phased out and replaced with getting old, and they are being replaced with larger capacity motors which are installed on the existing motor-mount basement. These larger capacity motors require higher magnetic flux than the conventional motors, which leads to the problem of magnetic saturation in the SMs. It is time consuming to find suitable parameters related to flux for each motor using the conventional SM control method. In this paper, a method to improve the adjustment of flux parameters using a simplified matrix table is introduced.

著者

高橋 翔太郎 和田 圭二

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.1, pp.33-40, 2022-01-01 (Released:2022-01-01)

参考文献数

21

被引用文献数

1

---

In this study, the authors propose a simple method for estimating stray capacitance of toroidal inductors. The proposed method calculates the total stray capacitance of a toroidal inductor based on the stray capacitance between the winding and the core, calculated by considering the insulation (plastic case and plastic molding) that contains the magnetic core. The frequency characteristics of the toroidal inductor can be calculated by substituting the calculated stray capacitance in the analytical model of the inductor, which takes into account the frequency dependence of the complex magnetic permeability of the magnetic material. In order to evaluate the proposed method, toroidal inductors were fabricated based on carbonyl iron dust, amorphous and nanocrystalline magnetic cores. Comparison between measured and calculated impedances clarify that the proposed method can calculate the stray capacitance of toroidal inductors with practical accuracy.

著者

高橋 空路 美井野 優 髙木 茂行

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.1, pp.18-25, 2022-01-01 (Released:2022-01-01)

参考文献数

26

---

We propose a new bias torque function control (B-TFC) method for electric vehicles (EVs) for starting on uphill roads and confirm its effectiveness by simulations and experiments. In the simulation, we developed a new model for accurate behavior of the evaluation system. We compared three kinds of slip suppression control methods, namely without TFC, with TFC (conventional), and the B-TFC. In the case of the B-TFC method, an EV carrying one person can start moving on a 1° wet uphill road without rolling backward. In the simulation using the developed model, the torque is suppressed and fluctuates between the command and bias torques. Then, the vehicle speed at 3s is 1.7m/s, which is the highest among the compared methods. The experimental results therefore agree with the simulations and the developed simulation model reproduces the experimental trends with high accuracy. We confirm that the proposed B-TFC method improves acceleration and slip suppression performances.

著者

熊谷 崇宏 伊東 淳一 日下 佳祐 佐藤 大介

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.12, pp.962-975, 2021-12-01 (Released:2021-12-01)

参考文献数

21

被引用文献数

1

---

This paper proposes an automatic design method of typical parameters such as number of phases, number of poles, stack thickness, stator outer diameter, rotor outer diameter, and number of turns of a switched reluctance motor from the requirement of the N-T characteristic. In particular, a specific parameter related to the magnetic saturation is defined in order to arbitrarily determine how much to use the magnetic properties of the iron core material. In the proposed method, the typical motor parameters in order to realize a miniaturized volume which satisfies an input N-T characteristic are obtained by setting the parameter related to magnetic saturation, maximum electrical frequency, maximum current density, maximum copper loss, conductor slot fill factor, magnetic properties of material, and input voltage. The designed motor is analyzed using the Finite Element Method in order to validate the proposed method.

著者

髙橋 和輝 苗 山 片山 昇

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.12, pp.1011-1012, 2021-12-01 (Released:2021-12-01)

参考文献数

2

---

This study proposes a method to estimate the states-of-charge (SoCs) and states-of-temperature (SoTs) of secondary batteries using neural networks and electrochemical impedance spectroscopy. The impedances in the frequency range of 100mHz-10kHz of a general lithium-ion battery were measured for various SoCs and SoTs and used for training a neural network with two hidden layers. The performance was evaluated using the measured impedances that were not used for the training. The mean square errors obtained were 2.094% and 0.511°C for SoC and SoT respectively.

著者

小笠原 悟司 山岸 直行 戸塚 弘之 赤木 泰文

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.111, no.11, pp.937-944, 1991-11-20 (Released:2008-12-19)

参考文献数

6

被引用文献数

8 6

---

In general, diode rectifiers with electrolytic capacitors on the DC side have been used as DC power supplies for voltage source inverters. This type of rectifiers, however, causes many problems such as poor power factor and harmonics. Recently, voltage source PWM rectifier-inverters have been studied to provide the following advantages; (1) harmonic-free on both AC sides; ( 2) unity power factor on the input AC side; (3) power flow of either direction or power regeneration; (4) reduction of the DC capacitor. It is, however, difficult for a conventional one to regulate the capacitor voltage on transient states because of having only a voltage feed-back loop.This paper describes a voltage source PWM rectifier-inverter with feed-forward control of instantaneous power. Based on the pq theory, the instantaneous power which is calculated in the control circuit of the inverter is fed forward to the control circuit of the rectifier. The feed-forward control of instantaneous power makes a great contribution to sufficiently suppress voltage fluctuation of the DC capacitor on transient states. Transient characteristics are discussed and some interesting experimental results of a laboratory model are shown.

著者

西田 克美 小西 義弘 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.122, no.4, pp.396-402, 2002-04-01 (Released:2008-12-19)

参考文献数

7

---

In this paper a dynamic circuit system model of active three-phase current-source PWM converter for Power Factor Correction is described on the basis of instantaneous space vector modulation scheme. The formulation of the discretized system and control algorithm to achieve the deadbeat responses of state variables in the utility AC power side low pass filter of this converter are evaluated and discussed from an experimental point of view. The system response of this converter is much faster and transient oscillations of both source current and capacitor voltage are suppressed effectively, though the state variable in the state feedback is only the current obtained from the precise current sensor interface circuit.

著者

松永 信智 仲野 征彦 岡島 寛 川路 茂保

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.130, no.10, pp.1175-1181, 2010-10-01 (Released:2010-10-01)

参考文献数

20

被引用文献数

1

---

In manufacturing processes, inappropriate thermal distribution, which is observed in both steady and transient states of the thermal plant, leads to inferior quality. For a plant with strong thermal interaction, decoupling control is effective in precisely tuning the control system. We proposed the decoupling controller based on the temperature-difference feedback model. However, no parameter-identification method of thermal interaction has been presented so far. Traditionally, iterative tuning by trial and error has been used to tune the controller parameters. In the case of an industrial plant, the tuning time would be long because of the large time constants of the plant. Recently, the virtual reference feedback tuning (VRFT) method, which can be used for off-line tuning of the controller parameters using a set of I/O data, has been studied to examine the possibility of shortening the tuning time. In this paper, a VRFT method for the feedback decoupling controller is proposed for a two-dimensional heat plate by taking consideration the thermal interaction property. The effectiveness of this VRFT method is evaluated by performing an experimental simulation.

著者

西尾 太一 山内 亮佑 金堂 雅彦 赤津 観

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.11, pp.848-855, 2021-11-01 (Released:2021-11-01)

参考文献数

9

被引用文献数

2

---

Permanent-magnet synchronous motors (PMSMs) are used for traction application in electric vehicles (EVs) and hybrid electric vehicles (HEVs). However, PMSMs generate vibration and acoustic noise in the connected load due to torque ripple. Torque ripple reduction techniques require accurate modeling of torque ripple and estimation of motor parameters considering magnetic saturation and magnet temperature variation. Existing approaches that consider magnetic saturation and magnet temperature variation are complicated and difficult to realize. Therefore, this paper proposes a torque ripple expression which is regarded as complex vector behavior. It can easily determine the high harmonic current reference to reduce the torque ripple by geometrically expressing the torque ripple. Furthermore, the effect of the proposed method of torque ripple reduction was experimentally verified.

著者

玉井 伸三 赤木 泰文

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.125, no.3, pp.221-228, 2005 (Released:2005-06-01)

参考文献数

12

被引用文献数

1

---

The so-called three level inverters have been widely used for industry applications because of high-voltage output ability and low harmonic contents. These applications are mainly suitable for ac motor drives. Nowadays, attention has been paid to larger-capacity inverters applicable to power system control. This paper describes their applications to power systems. First, harmonic analysis of a three-level inverter is achieved under the condition that its two dc capacitor voltages are unbalanced. Second, a control method for balancing the two dc capacitor voltages is described. Finally, applications of single-phase three-level inverters to STATCOM and BTB are introduced. Their control performance is confirmed by computer simulation.

著者

澤畠 公則 堀 雅寛 永田 稔 榎本 裕治

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.771-777, 2021-10-01 (Released:2021-10-01)

参考文献数

10

---

Downsizing of motors by achieving a high power density is required to meet the emission regulations of each country. In this study, we developed a permanent magnet synchronous motor (PMSM) with high space factor, which enables the motor to be downsized. This PMSM applies the welding-less rectangular coil to shorten the axial motor length. The developed PMSM was verified by elemental and measurement tests. The test results confirmed that (i) the local heating of the welding-less coil was 4.5K and (ii) the torque and coil temperature of the developed PMSM reached their design values.

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

及部 七郎斎 堀 洋一

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.121, no.12, pp.1250-1255, 2001-12-01 (Released:2008-12-19)

参考文献数

14

---

A novel object transfer system named “Magic Carpet” composed of linear actuator array and driven by autonomous decentralized type control algorithm is proposed. An object is manipulated by a large number of contact points with many actuators, which differs from conventional systems like belt conveyor. In this paper, the control algorithm for such “distributed manipulation” is proposed.Due to recent development of micromachine technology, distributed manipulation becomes more important. This system has a big advantage in its fault tolerance because it has a lot of actuators with poor performance to move a large heavy object. However, it has a serious wiring problem to be solved and homogeneous structure should be introduced because of a large number actuators.To solve these problems, “combined control of central /autonomous decentralized algorithms” is proposed and evaluated by computer simulation and experiment.

著者

保川 忍 藤田 信一郎

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.107, no.5, pp.665-672, 1987

被引用文献数

1

著者

土居 弘毅

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.110, no.6, pp.608-611, 1990-06-20 (Released:2008-12-19)

参考文献数

7

著者

山下 祐輝 子田 陸 片山 一哉 岡本 吉史

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.9, pp.729-737, 2021-09-01 (Released:2021-09-01)

参考文献数

20

被引用文献数

2

---

Because the interior permanent magnet synchronous motor (IPMSM) is one of the most efficient motors, it is applied to many industrial machines. The electromagnetic characteristic of IPMSM is dependent on many design parameters such as the position and shape of flux barrier, the magnetization angle of permanent magnet, the current phase angle and so on. The topology optimization (TO), which is an attractive method due to the wide design range with high degree of freedom, has been applied to the rotor design of IPMSM. In this paper, two stage TO method is proposed. Firstly, to widely search the rotor structure, the density method (DM) which handling gray scale is carried out. Next, the obtained structure is set to the initial structure of level-set method (LSM), the local search is carried out. The performance of proposed TO method composed of DM and LSM is compared with the single TO method (DM or LSM) in the design problem in which the object is the determination of the rotor structure composed of permanent magnet, rotor core and flux barrier to improve the torque characteristics and the magnet demagnetization.