著者

秦 広 前田 孝 田川 直人

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.1511-1516, 1997-11-20 (Released:2008-12-19)

参考文献数

10

---

As for traction motor for railway vehicle, over fifty thousands DC motors are used only in Japan Railways Companies. Insulation breakdown is one of the biggest problem for traction motor and various kind of insulation tests are carried out for every motors at the time of overhaul. The methods and the way of these insulation tests are determined about thirty years ago or more. Materials of insulation and how to compose these materials have progressed in these days. So it is important to research what kind of insulation test is suited for traction motor.This time we made a research to estimate various kinds of insulation tests by carrying out dielectric breakdown test for over 150 motors. And this paper describes the result.

著者

奥谷 民雄 島添 敏之

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.119, no.11, pp.1307-1314, 1999-11-01 (Released:2008-12-19)

参考文献数

20

---

This paper describes the development of a centralized interlocking system (CIS) for railway signalling and its evaluation in terms of safety and availability. The CIS is applied to the Ibara-line (41.7km) connecting Soja, Okayama Prefecture, and Kannabe, Hiroshima Prefecture, which began operations at January 11, 1999. The objectives in developing a CIS were to provide all the facilities available in both interlockings and a CTC (Centralized Traffic Control) system at significantly reduced cost while maintaining high levels of safety and reliability.The CIS is regarded as being divided into control center and lineside subsystems (see Fig.1). At the heart of the control center subsystem is the interlocking itself, which is a fail-safe multiple processor system. The lineside subsystem consists of the lineside data cable and trackside functional modules forming a fail-safe local area network.The trackside functional modules are connected to the control center subsystem which control them by trackside data links using single mode(SM) optical fiber cables. For the CIS we developed a long distance data transmission system by means of SM optical fiber technology, permitting a direct link over 20km without using a repeater.This system enables direct interlocking between starting signals reading into each end of a single line section. Furthermore, a train direction logic featuring a diversity train detection method that was produced in this development improves a safety level and a utilization rate in the single line signalling.

著者

小川 知行 若尾 真治 近藤 圭一郎

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.126, no.12, pp.1690-1698, 2006 (Released:2007-03-01)

参考文献数

8

被引用文献数

2 4

---

In this paper, we study an optimal design for a hybrid power source railway vehicle as an alternative to diesel railway vehicles. The hybrid power source railway vehicle is assumed to be composed of the fuel cell and the electric double layer capacitor. We apply the multiobjective optimization based on the genetic algorithm for the vehicle design, aiming at reduction of both initial cost and energy consumption. The pareto optimal solutions are obtained using the multiobjective optimization.First we develop a simulation model of the hybrid power source railway vehicle and its electric power control methods. Next we derive the pareto optimal solutions as a result of the multiobjective optimization. Finally, we categorize the pareto optimal solutions to some groups, which enables us to elucidate characteristics of the pareto optimal solutions. Consequently, using the multiobjective optimization approach we effectively comprehend the problem characteristics and can obtain the plural valuable solutions.

著者

鈴木 和樹 田崎 剛 柴田 昌明

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.124, no.10, pp.1017-1022, 2004 (Released:2005-01-01)

参考文献数

12

被引用文献数

2 2

---

In this paper, we propose a novel approach for stepping forward action of biped robot with minimum kicking force. In walking or starting to walk, the general biped robot kicks the ground with its own hind leg as well as human being does. The condition of the ground often restricts the gait because of stiffness, slipperiness and so on. In order to surmount the difficulty on stepping forward action, we introduce the redundant legged biped robot, which has 4 degree-of-freedoms on each leg. Our robot enables to move its tip position and its center of mass (COM) position independently. Controlling COM acceleration without moving its tip position realizes the stepping forward action with little kicking force. The physical experimental results show the significant validity of the proposed approach.

著者

北川 英裕美 片岡 健司 駒谷 喜代俊

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.116, no.8, pp.874-882, 1996-07-20 (Released:2008-12-19)

参考文献数

12

被引用文献数

1 1

---

This paper presents a computer aided system for making the train timetable, DIAPLAN-II (Train Diagram Planning Support System). It is designed to prepare the timetable of complicated lines including junctions and sections with different number of tracks such as single, double and four. We have already developed the DIAPLAN for double-track lines. It has employed the integrated framework of simulation and scheduling to emulate human experts' scheduling process on a computer, and it has been successfully applied to the co-operative work between man and computer in the timetable planning. Based on this experience, we employ the same framework to develop our new system. In this system, we define some additional functions to adjust the arrival and departure order of trains at a station in our framework, because it is the critical point for making the timetable of those complicated lines. A timetable generated by DIAPLAN-II shows its usefulness in the co-operative timetable planning.

著者

桝川 重男

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.116, no.5, pp.538-545, 1996-04-20 (Released:2008-12-19)

参考文献数

13

被引用文献数

1 5

---

In this paper, a novel method to reduce harmonics involved in ac line currents of a diode rectifier circuit with a smoothing capacitor inside the dc output is proposed. This circuit consists of passive rectifier devices only. It is applied to the conventional double connected diode rectifier, 12-phase rectifier, and is added an auxiliary circuit which is composed of an interphase transformer with a secondary winding and a single-phase diode rectifier. Input voltage waveforms of the proposed circuit are quasi 24-step voltages which correspond to those of the conventional 24-phase rectifier.In this paper, circuit performances of the proposed method are discussed by analyzing the input voltage waveforms. Then, effects on harmonic reductions can be clarified by theoretical and experimental results, and ratings of system components are investigated.

著者

松岡 孝一 村本 宏美

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.9, pp.1049-1053, 1997-08-20 (Released:2008-12-19)

参考文献数

11

著者

川合 弘敏

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.131, no.11, 2011

著者

上町 俊幸 遠藤 亮 大石 潔

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.5, pp.530-531, 2005 (Released:2005-08-01)

参考文献数

5

---

This paper proposes a new field-weakening control considering voltage saturation for vector controlled induction motor. The proposed method improves the output torque characteristics in the field-weakening region. The effectiveness of proposed method is verified by the experimental results.

著者

松井 信行 千葉 明 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.114, no.9, pp.824-832, 1994-08-20 (Released:2008-12-19)

参考文献数

51

被引用文献数

5 9

著者

瓜田 英明 山村 直紀 常広 譲

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.119, no.5, pp.707-712, 1999-05-01 (Released:2008-12-19)

参考文献数

4

被引用文献数

1 5

---

Although general-purpose inverters have been used for variable speeds driving of AC motors, these are only for induction motor (IM) driving. Synchronous motor (SM) with permanent magnets has many advantages compared with IM; Small size, high efficiency, driving only synchronous frequency, and so on. In this paper, “general-purpose inverter for SM driving” is discussed. Following characteristics are required for the achievement of this inverter; (1) Stable driving without position sensor. (2) Performance characteristics equal to DC motor driving. (3) Robust control system with the estimating functions of motor parameters.This paper describes practical methods that attain the above characteristics by controlling primary flux of SM. In addition, it is shown that the estimating functions of motor parameters and the inverter circuits generating voltages equal to reference are indispensable to achieve high performance over all working regions.

著者

前田 卓志 駒谷 喜代俊

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.118, no.7-8, pp.836-842, 1998-07-01 (Released:2008-12-19)

参考文献数

6

被引用文献数

1

---

For sufficient transportation capacity and passengers comfort and convenience, it is very important to design the suitable lift systems (e. g., the appropriate number of cages, velocity, capacity etc.) using a model which describes real elevator movements.The procedure used in conventional design calculations for office buildings is to determine the transportation capacity for the up-peak traffic situation using a, simple passengers arrival model.This paper presents a new design calculations using balanced traffic model, which can deal with the elevetor movements considering passengers arrival rate. As some performance indexes to evaluate the quality of service can be calculated by using this model, lift system designers can determine the appropriate lift facilities as to satisfy their goals. The validity of the propsed model is also shown by comparing with the measured data in real lift systems.

著者

小野寺 浩

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.612-616, 1990-06-20 (Released:2008-12-19)

参考文献数

4

著者

田口 義晃

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.11, pp.NL11_2-NL11_2, 2016-11-01 (Released:2016-11-01)

著者

飯田 祥二 桝川 重男 下村 潤一 宮入 庄太

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.5, pp.467-476, 1990-05-20 (Released:2008-12-19)

参考文献数

7

被引用文献数

1 2

---

In this paper, we propose a new effective method for improving waveforms of output voltages in a double connected voltage source inverter. This method is based on applying two different input DC voltages which change to two levels periodically and differ each other from half cycle in phase, as DC power supplies into the inverter apparatus. The operations of two 6-phase bridge inverter circuits and the configurations of two output transformers, connected delta-delta and delta-star, are exactly the same as the conventional 12-step inverter.First is this paper, the principle of the proposed method is described, and the optimum input voltage waveforms are decided theoretically by minimizing the total harmonic distortion factor of the output voltages in this inverter apparatus. Then we suggest that the calculated input voltages with two levels can be realized by dividing those into two DC voltage supplies whose voltage ratio is 2:1 and adding four bi-directional switching elements. Also, the capacities of the DC input sources and the output transformers are calculated.As a result, we can make clear that although the construction of the proposed inverter is very simple, the output voltage waveshapes of the inverter are almost the same as those of the 24-step inverter. The experimental discussions are also given.Moreover, a voltage control method for applying it to uninterruptible power supply is discussed. In addition, it is shown that the waveforms of output voltage in the inverter apparatus are improved, similar to the conventional 36-step or 48-step inverter when the DC voltage source is divided into 3 or 4 supply parts.

著者

近藤 稔 川村 淳也 寺内 伸雄

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.125, no.4, pp.313-320, 2005 (Released:2005-07-01)

参考文献数

15

被引用文献数

5 8

---

We are developing a new high performance traction motor for railway vehicle using interior permanent magnet synchronous motor (IPMSM) and expecting it can reduce energy consumption. To estimate the losses and energy consumption of IPMSM, a simple motor model is needed. In this paper, We propose a simple equivalent circuit and loss model for IPMSM, the constants of which can be obtained from several simple test results. The calculation results using them show that the total loss of the IPMSM becomes about 60% of that of the induction motor when used as a traction motor for a typical commuter train.

著者

近藤 圭一郎 秦 広 結城 和明 長沼 克範 松岡 孝一 長谷部 寿郎

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.125, no.4, pp.348-354, 2005 (Released:2005-07-01)

参考文献数

6

被引用文献数

2 3

---

This paper is aimed at providing the designing method of a permanent magnet synchronous motor (PMSM) control system for the high-speed and the single-phase AC powered Gauge Changing Train (GCT). The state-of-the-art electrical motive unit is equipped with downsized direct drive type PMSMs for the simplified gauge changeable truck. Due to the feeding the AC single phase power, we propose a beat-less control for PMSMs. We verify the development results of designing procedures by the experimental results of operation on a high-speed test line in Colorado, USA.

著者

藤野 篤哉 飛田 敏光 中川 久美子

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.7, pp.815-822, 1997-06-20 (Released:2008-12-19)

参考文献数

9

被引用文献数

4 1

---

With a view point of space factor in large-scale buildings, this paper first overviews several mass transportation systems and compares their characteristics. Then a loop-type independent-driven multiple-cage elevator system and its high-efficient control method are proposed, The multiple-cage elevator system can reduce its shaft space as half as that of normal elevator system. Computer simulations show the proposed control method can improve waiting time and round trip time, and restrain needless stops. The loop-type multiple-cage elevator system may be feasible for the third transportation system which fills the gap between elevators and escalators in the near future.

著者

稲員 ふみ

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.4, pp.NL4_05-NL4_05, 2010-04-01 (Released:2010-04-01)

著者

山崎 克巳 春石 善久 荒 隆裕

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.124, no.11, pp.1155-1163, 2004 (Released:2005-02-01)

参考文献数

8

被引用文献数

4 6

---

In this paper, we investigate effects of harmonic electromagnetic field to torque characteristics of induction motors from both side of experiment and electromagnetic field analysis. The characteristics of two kinds of the aluminum cage three-phase induction motors are measured and calculated. One is with the closed rotor slots. The other is semi-closed. In the experiment, the negative torque at synchronous speed is measured by driving the induction motor by the synchronous permanent magnet motor. The total torque at load condition is also measured by the torque detector. In the analysis, the harmonic magnetic fields, the harmonic losses and the harmonic torques at each time and space harmonic order are calculated using the nonlinear time-stepping finite element method to clarify the mechanism of the harmonic torque generation. The measured and the calculated results agree well. It is clarified that the negative torque caused by the slot harmonics at the rated load condition is not negligible and that the negative torque is mainly generated by the harmonic core losses.