研究者詳細 - 道木　慎二

論文 - 道木　慎二

分割表示 266 件中 41 - 60 件目／全件表示 >>

Control Method that Reduces the High Harmonic in Overmodulation Drive of Dual Winding Motor under Condition of Voltage Supplies Unbalance 査読有り

Suzuki T., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 918 - 923 2020年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

Looking toward the autonomous driving, redundant motor drive system with two voltage supplies, two inverters, and a dual winding motor is reported recently. The dual winding motor has a characteristic of cancelling the 6th harmonic produced in overmodulation drive. However, it loses its characteristic when there is voltage difference in the two voltage supplies. In this report, it is shown that characteristics of cancellation is maintained even if there is voltage difference in the two voltage supplies when sum of the current is controlled. The maintained characteristics is confirmed with the simulation.

DOI： 10.23919/ICEMS50442.2020.9290790

Scopus

Examination of Magnetization Curve Model for Torque Ripple Reduction of IPMSMs to Compensate for Magnetic Characteristics 査読有り

Akatsuka H., Hasegawa M., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 240 - 245 2020年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

This paper evaluates a torque ripple reduction performance of IPMSMs by model selection of magnetization curves to be compensated for magnetic characteristics. A non-linearity compensation method for magnetic characteristics has been proposed, which is based on simple approximations of the magnetization curve. Therefore, an approximation of the magnetic characteristics suitable for torque ripple reduction was studied and the performance of the proposed method was experimentally evaluated.

DOI： 10.23919/ICEMS50442.2020.9290817

Scopus

Examination of Current Sensor Fail-Safe of PMSM current control system which using current and position state estimation techniques 査読有り

Hori S., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 694 - 698 2020年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

PMSM is increasingly used in applications requiring safety, such as electric vehicles. However, in a typical PMSM drive system, just one failure of the sensors causes whole system failure. Then it is focused on the potential to improve the system redundancy by making the sensing system redundant In this paper, we report that the control of a current sensing system made redundant by state estimation techniques can be continued even in the event of a phase current sensor failure.

DOI： 10.23919/ICEMS50442.2020.9290924

Scopus

The improvement of initial rotor position estimation method with Extended-EMF available at overall speed range by exciting with speed and signal injection 査読有り

Kozakura T., Nimura T., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 252 - 257 2020年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

We have proposed position sensorless control of PMSMs with Extended-ElectroMotive Force(EEMF). It is available at overall speed with a single estimator by exciting with speed and signal injection. Therefore, the configuration is simplified, and acceleration/deceleration rate is improved because a controller is not switched to another. Additionally, Extended-EMF also available for the start-up method which uses principle of magnetic saturation. In this paper, we propose the new initial rotor position estimation method using Extended-EMF.

DOI： 10.23919/ICEMS50442.2020.9291103

Scopus

A Novel Decoupling Control Scheme for Dual Three Phase Motors 査読有り国際誌

Wang S., Imai K., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 1225 - 1229 2020年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

A novel decoupling control scheme for multiphase machines with multiple three-phase winding sets, for instance, the Dual Three Phase (DTP) machines, is proposed in this paper. This motor has two sets of three phase windings that implemented spatially with 30 electrical degrees. Vector Space Decomposition (VSD) frame and Multiple Stator (MS) frame are well known for its vector control. VSD frame has been applied in many applications due to its clear harmonics mapping and good extensions to multiphase machines. On the other hand, MS frame is more intuitive as to treat two winding sets individually so that the accumulated techniques of three-phase machines can be applied directly. However, this approach was not adopted in high performance drives because its decoupling control methodology is not sufficiently developed to solve its inherent magnetic coupling issue. Therefore, this paper proposed a decoupling control scheme to improve dynamic performance of MS frame, and performance has been evaluated by experimental results.

DOI： 10.23919/ICEMS50442.2020.9290999

Scopus

Position Sensorless Estimation for Surface Permanent Magnet Synchronous Motor Using Eddy Current 査読有り国際誌

Kato S., Tomita M., Hasegawa M., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 1972 - 1976 2020年11月

担当区分：最終著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

The rotor position sensorless control of Surface Permanent Magnet Synchronous Motor (SPMSM) at a standstill and in the low-speed region is challenging because the motor has no magnetic saliency. Thus, the paper presents the development of a new rotor position-sensorless estimation method for SPMSM.In the proposed method, thin conductive non-magnetic materials are placed on the rotor surface. When the high-frequency voltage is applied, the eddy current flows through the materials, and the inductance is slightly changed depending on the rotor position. The position estimation from 0 to 360 angles (electrical degrees) where the field-oriented control (FOC) is required for SPMSM is realized using this inductance changes. The experiments show that the initial rotor position estimation error is less than 20 degrees ; thus, the proposed method is very useful.

DOI： 10.23919/ICEMS50442.2020.9291246

Scopus

Performance Evaluation of Position Sensorless Control by using Extended Electromotive Force including Overmodulation Region on Electric Vehicle 査読有り国際誌

Kitamura K., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 550 - 554 2020年11月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

Position sensorless control of PMSMs is one of the important research object in terms of lowering cost, saving installation space and improvement of reliability. A previous research proposed a method to estimate EEMF(Extended Electromotive Force) excited by signal injection and speed for all speed range and confirmed its performance in EV. In this paper, position sensorless control including overmodulation is implemented to EV and evaluated its performance.

DOI： 10.23919/ICEMS50442.2020.9291125

Scopus

A Study on the Implementation of Vector Control System Using the Model Base Parallelization Tool on Multi-Core Processor 査読有り国際誌

Kim J., Kato S., Honda S., Edahiro M., Doki S.

23rd International Conference on Electrical Machines and Systems, ICEMS 2020 頁： 1951 - 1956 2020年11月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：23rd International Conference on Electrical Machines and Systems, ICEMS 2020

The scope of embedded systems used by multi-core processors is widely applied to various products that require control, such as home appliances, industrial devices, transportation devices, and communication terminals. Model-Base Parallelization technology was proposed towards efficient parallelization to implement a control system in the introduction of multi-core processors. By applying MBP, it is possible to parallelization even details that people are not aware of, but the control system with numerous causal relationships still does not sufficiently utilize multi-core. Therefore, a method of inserting a time-delay is being studied as a method for improving the parallelization of multi-cores.In this paper, We describe the insertion location that improves parallelization and does not affect the control performance by inserting time-delay to implement the vector control system of PMSM on multi-core efficiently.

DOI： 10.23919/ICEMS50442.2020.9290965

Scopus

Design Method of Model Predictive Control for Development of Current Control System of PMSM 査読有り

Shimaoka M., Doki S.

IEEJ Transactions on Industry Applications 140 巻 ( 11 ) 頁： 793 - 806 2020年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEJ Transactions on Industry Applications

This paper describes the design method for Model Predictive Control (MPC) that is suitable for current control systems of Permanent Magnet Synchronous Motor (PMSM). A current control system based on MPC predicts future current behaviors for considerable input voltage and determines the optimum input voltage by evaluating these behaviors. Conventional MPC sets the cost function, making it effective for several control purposes. However, the suitability of the search space of conventional MPC has not been discussed and its achievable performance was limited. In this paper, we consider an appropriate search space for current control system of PMSM by referring to existing modulation methods and inverter operation. Then, we propose new MPC that satisfies that search space and show that the proposed MPC can usage from a linear region to a square-wave region by the appropriate search space.

DOI： 10.1541/ieejias.140.793

Scopus

PMSM電流制御系構築のためのモデル予測制御の設計法査読有り

嶋岡雅浩, 道木慎二

電気学会論文誌D 140 巻 ( 11 ) 頁： 793-806 2020年11月

PMSM電流制御系構築のためのモデル予測制御の設計法査読有り

嶋岡雅浩, 道木慎二

電気学会論文誌D 140 巻 ( 11 ) 頁： 793-806 2020年11月

Servo brake control based on finite control set-model predictive control with a voltage smoother 査読有り国際共著国際誌

Kawai H., Cordier J., Kennel R., Doki S.

Proceedings - 2020 IEEE 2nd Global Power, Energy and Communication Conference, GPECOM 2020 頁： 131 - 136 2020年10月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Proceedings - 2020 IEEE 2nd Global Power, Energy and Communication Conference, GPECOM 2020

This study presents an angular position control strategy for servo brake motion of an electric motor based on a finite control set-model predictive control (FCS-MPC) with a voltage smoother. In the proposed control scheme, the controller predicts the future current, speed and angular position with a finite set of smoothed voltages and outputs the optimal smoothed voltage by using pulse width modulation (PWM). Smoothed voltages effectively reduce current ripple, which results in less parasitic oscillations of the angular position while tracking the reference target. The simulated and experimental results obtained with a permanent magnet synchronous motor (PMSM), fed by a 2-level 3-phase voltage source inverter, show that the proposed method has both excellent performance of current ripple reduction and excellent dynamic performance in servo brake motion.

DOI： 10.1109/GPECOM49333.2020.9247941

Scopus

Torque Ripple Reduction of IPMSM Considering Compensation of Nonlinearities of Magnetic Characteristics 査読有り

Akatsuka H.

IECON Proceedings (Industrial Electronics Conference) 2020-October 巻頁： 1102 - 1107 2020年10月

信号重畳と速度により励起される拡張誘起電圧を利用した永久磁石同期モータの全速度域位置センサレス制御査読有り

二村拓未, 道木慎二

電気学会論文誌Ｄ 140 巻 ( 8 ) 頁： 8589-596 2020年8月

信号重畳と速度により励起される拡張誘起電圧を利用した永久磁石同期モータの全速度域位置センサレス制御査読有り

二村拓未, 道木慎二

電気学会論文誌Ｄ 140 巻 ( 8 ) 頁： 8589-596 2020年8月

モデル予測制御に基づくPMSM電流制御系の定常電流制御性能改善のための探索空間設計査読有り

嶋岡雅浩, 道木慎二

電気学会論文誌D 140 巻 ( 6 ) 頁： 468-479 2020年6月

モデル予測制御に基づくPMSM電流制御系の定常電流制御性能改善のための探索空間設計査読有り

嶋岡雅浩, 道木慎二

電気学会論文誌D 140 巻 ( 6 ) 頁： 468-479 2020年6月

Position sensorless control of PMSM at overall speed with extended-EMF excited by speed and signal injection 査読有り

Nimura T., Doki S.

IEEJ Transactions on Industry Applications 140 巻 ( 8 ) 頁： 589 - 596 2020年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEJ Transactions on Industry Applications

Extended electromotive force (EEMF) estimation method is a representative method used for position sensorless control of PMSM in the middle/high speed range. EEMF enables position estimation by utilizing back-EMF and the saliency of inductance. The amplitude of EEMF is adjusted to maintain it above a certain voltage by using a signal injection, regardless of the rotor speed. Thus, EEMF can be used as a single position estimator to estimate overall speed range. Based on the validation of a EEMF control performance and a parameter sensitivity analysis, this paper presents a position sensorless control system configured with a single position estimator from startup to middle/high speed. The necessary adjustment parameter and control performance of the actual machine are also presented.

DOI： 10.1541/ieejias.140.589

Scopus

Design of Search Space for Improving the Steady Current Control Performance of PMSM Current Control System based on Model Predictive Control 査読有り国際誌

Shimaoka M., Doki S.

IEEJ Transactions on Industry Applications 140 巻 ( 6 ) 頁： 468 - 479 2020年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEJ Transactions on Industry Applications

This paper proposes a method to design the search space of Model Predictive Control (MPC) for improving the steady current control performance of Permanent Magnet Synchronous Motor (PMSM) current control system. A current control system based on MPC predicts the future current behaviors for considerable input voltage and determines the optimum input voltage by evaluating these behaviors. However, the basic MPC has inferior steady current control performance depending on the operating points. This is because the search space of basic MPC represented by voltage vectors is not suitable appropriate for PMSM current control. To overcome this problem, we consider difference of search space of basic MPC and current vector control with a modulator such as Pulse Width Modulation (PWM) or Space Vector Modulation (SVM) and clarify the necessary search space for improving the steady current control performance. Then we propose a design method for the search space, and through experimentation, we show that proposed design method can improve the steady current control performance.

DOI： 10.1541/ieejias.140.468

Scopus

Position Sensorless Control of Synchronous Reluctance Motors at Low-Speeds 査読有り国際共著国際誌

Hatanaka T., Kato S., Tomita M., Hasegawa M., Doki S., Kato S.

2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019 2019年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：2019 IEEE 4th International Future Energy Electronics Conference, IFEEC 2019

Synchronous reluctance motors (SynRMs) have attracted much attention because they do not require magnets. Position sensorless control of SynRMs at low speeds is necessary, and several methods have been proposed in this regard. A new position sensorless control method for SynRMs operating in the very low-speed region is proposed. This approach superimposes a high-frequency current with a small and constant amplitude and a constant frequency to the torque current for driving the SynRMs, by using a high-frequency current control system. It has been shown that robust position sensorless control against inductance variations can be realized using this proposed method. In the position sensorless control method based on a superimposing signal, the current should be small. Therefore, in this paper, the capability of the presented approach to achieve a minimum constant amplitude of the high-frequency current is investigated. The experimental results indicate that the proposed method is a feasible one as position sensorless control of SynRMs in very-low speed region even if the superimposed current has a minimum constant amplitude.

DOI： 10.1109/IFEEC47410.2019.9014679

Scopus

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