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Sensorless control and Inductance Parameter Identification of PMSM Based on Two-Orientation High-Fequency Square Wave Injection 6

Sensorless Control and Inductance Parameter Identification o...

引用

6th IEEE international electrical and Energy conference, CIEEC 2023

作者： Zheng, Haowen Hao, Jiarui Zha, Ming Liu, Zirui Kong, Wubin School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Low Frequency Electromagnetic Communication Wmcri Laboratory Wuhan China

ISBN: (纸本)9798350346671

the fundamental-model-based sensorless control method is sensitive to inductance parameters, and accurate electrical parameters are conducive to improving rotor position estimation accuracy. In addition, the accuracy of inductance parameters will also affect the control performance of the motor system. Based on high-frequency square wave voltage injection, the sensorless control and online parameter identification are studied in this paper. Firstly, the influence of inductance parameters on fundamental-model-based sensorless control is studied, and then the zero- and low-speed sensorless control and parameter identification strategy based on two-orientation high-frequency square wave voltage injection is proposed. Finally, the method is verified by simulation and experiment. © 2023 IEEE.

关键词： Sensorless control

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Torque Ripple Suppression control in Medium to High-Speed Ranges With Position Sensorless Vector control 27

Torque Ripple Suppression Control in Medium to High-Speed Ra...

引用

27th international conference on electrical Machines and Systems, ICEMS 2024

作者： Mikami, Taiki Kawarazaki, Keitaro Hoshi, Nobukazu Tokyo University of Science Faculty of Science and Technologies Dept. of Electrical Engineering 2641 Yamazaki Chiba Noda278-8510 Japan

ISBN: (纸本)9784886864406

the spatial harmonics of the flux linkage generate torque ripple, which causes vibration and noise in the interior permanent magnet synchronous motors (IPMSMs). General torque ripple suppression control can suppress the ripples in the low-speed range;however, it is difficult to suppress them in the medium to high-speed range. this paper proposes a novel torque ripple suppression control that can be applied in a wide speed range using an all-pass filter with complex coefficients. Simulation and experimental results show suppression of the 6th -order torque ripple with a wide speed range under position sensorless control. the suppression rate in the high-speed range was approximately 52% for the simulation and 8.0 dB for the experiment. © 2024 the Institute of electrical Engineers of Japan.

关键词： All-pass filters

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High Performance Sensorless control Strategy of IPMSM Drives Based on High Frequency Square-Wave Voltage Injection 6

High Performance Sensorless Control Strategy of IPMSM Drives...

引用

6th IEEE international electrical and Energy conference, CIEEC 2023

作者： Cheng, Yuan Lv, Pingtailei Du, Bochao Cui, Shumei Department of Electrical Engineering and Automation China Chongqing Research Institute of Hit Harbin China

ISBN: (纸本)9798350346671

In order to improve the dynamic performance of sensorless Interior Permanent Magnet Synchronous Motor (IPMSM) position observation at low speeds, this paper proposes a position error extraction method based on Luenberger observer and combined with deadbeat predictive current control (DPCC) strategy. To improve the robustness of the position observation, a high frequency square-wave voltage is injected into the d-axis to generate a high frequency current signal with position information. then the actual current is subtracted from the observed signal to obtain the high frequency current error. the motor position information is calculated by position error decoupling and phase-locked loop. To improve the rapidity of the current loop, a DPCC strategy is adopted to obtain the predicted value of the motor current using the observer. Finally, the simulation results show that the proposed control method can reduce the overshoot of position observation error and the dynamic performance of the motor controller is improved. © 2023 IEEE.

关键词： Sensorless control

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Research on Full-Envelope Flight control of a New Type Tail-Sitter UAV 6

Research on Full-Envelope Flight Control of a New Type Tail-...

引用

6th international conference on Robotics, control and automation engineering, RCAE 2023

作者： Guo, Jiandong Liao, Zhixiang Dong, Zhen Liang, Chenyu Yang, Changfa Unmanned Aerial Vehicles Research Institute Nanjing University of Aeronautics and Astronautics Nanjing China College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China Nanjing Changkong Technology Co. Ltd. Nanjing China AVIC Hongdu Nanchang China

ISBN: (纸本)9798350315301

the proposed tail-sitter UAV in this paper combines the characteristics of helicopter and fixed-wing aircraft, with the performance of vertical take-off and landing and high-speed forward flight. Firstly, the total layout design of the UAVis carried out, the nonlinear dynamic model of the full-envelope flight is established, and the control law and coupling characteristics of the U A V are analyzed through the model characteristics. Secondly, according to the flight speed and pitch angle, a redundant allocation control strategy of adaptive rotor control and fixed-wing surface control is obtained, and a smooth switching method of horizontal and vertical attitudes is designed, with the numerical simulation is developed during the full-envelope flight. Finally, a flight test is carried out for a prototype UA V, the rationality of the redundant allocation control strategy and the feasibility of the full-envelope flight control law are verified. © 2023 IEEE.

关键词： Flight envelopes

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Parallel control of three-Phase Four-Leg inverter based on virtual impedance 6

Parallel control of Three-Phase Four-Leg inverter based on v...

引用

6th IEEE international electrical and Energy conference, CIEEC 2023

作者： Li, Fangyuan Wang, Fusheng Zhang, Shuo Xie, Yuanchao School of Electric Engineering and Automation Hefei University of Technology Anhui Province Hefei China

ISBN: (纸本)9798350346671

this letter proposes a sequential control method for three-phase four-leg(3P4L) inverter to improve the output voltage imbalance and power imbalance of parallel system under unbalanced conditions. In order to make the capacity of each inverter in the parallel system match, it is proposed to use the droop control on the first three legs, the negative sequence current and the fourth leg current use the virtual impedance method to control the distribution of positive sequence, negative sequence and zero sequence current respectively, the front three leg and the fourth leg of the 3P4L inverter control independently. Finally, the output voltage is balanced at the same time the output current and the output power of the parallel system are distributed according to the capacity of the parallel inverter under unbalanced conditions, and the circulation of the system is reduced. the correctness of the method is verified by simulation. © 2023 IEEE.

关键词： Electric inverters

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Small-Signal Stability Analysis of Grid-connected Converters with Different Reactive Power control 6

Small-Signal Stability Analysis of Grid-connected Converters...

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6th international conference on electrical engineering and control Technologies, CEECT 2024

作者： Yang, Libin Song, Lei Li, Zhengxi Liu, Tingxiang Wang, Zhihao Ma, Junxiong State Grid Qinghai Economic and Technological Research Institute Qinghai Xining810000 China Green Energy Development Research Institute State Grid Qinghai Electric Power Company Qinghai Xining810000 China State Grid Qinghai Electric Power Company Qinghai Xining810000 China Shandong University School of Electrical Engineering Jinan China

ISBN: (纸本)9798331528096

Renewable energy Grid-Connected systems are confronted with complex stability issues. Meanwhile, the diversification of control strategies further increases the difficulty of stability analysis. Grid-connected converters have various reactive power control (RPC) methods, which are summarized as constant voltage control (CVC), constant reactive power control (CRPC), and reactive power-voltage droop control (QVC) in this paper. To explore the impact of the aforementioned three different RPC methods on system stability, this paper establishes a small-signal model of the system under different control methods and analyzes its smallsignal stability using the state space analysis method. During the analysis, it is acknowledged that the impact of phase-locked loops (PLL) on stability has been researched. thus, in this paper, we further simplify the complex system by neglecting the dynamic effects of the PLL, focusing instead on the selection of RPC methods and the setting of control parameters and their influence on system stability. this work provides a framework for stability analysis, control structure selection, and parameter design of grid-connected converters. the validity of the work presented is confirmed through simulations in DlgSILENT PowerFactory. © 2024 IEEE.

关键词： Phase locked loops

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Research on Bidding Model for Coal-Fired Power Units under the Coupling of Electricity and Carbon Markets 6

Research on Bidding Model for Coal-Fired Power Units under t...

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6th international conference on electrical engineering and control Technologies, CEECT 2024

作者： Cheng, Fan Wang, Chen State Grid Shanghai Municipal Electric Power Company Electric Power Science Research Institute Shanghai China

ISBN: (纸本)9798331528096

Amid the ongoing shift towards sustainable energy, the convergence of electricity markets with carbon markets has taken center stage, significantly influencing the bidding strategies of coal-fired power plants. this study delves into the underlying principles and functioning of the integrated electricity-carbon market, examining its impact on the bidding approaches of coal-based power units. We have developed a bidding framework that factors in carbon emission costs and tested its effectiveness through comprehensive case studies. Our findings reveal that accounting for carbon emission costs significantly alters the marginal costs and competitive landscape for coal-fired power units, compelling them to implement strategies aimed at reducing carbon emission intensity. As a result, this research plays a crucial role in promoting the low-carbon transition within the power sector, providing both theoretical insights and practical guidance for enhancing the collaborative development of electricity and carbon markets. © 2024 IEEE.

关键词： Coal fired power plant

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Modeling and control of Unidirectional Power Flow DC Solid-State Transformer Applied to Multi-sources DC Power Grid 6

Modeling and Control of Unidirectional Power Flow DC Solid-S...

引用

6th international conference on Energy, electrical and Power engineering, CEEPE 2023

作者： Yao, Yue Chen, Jieguang Xu, Weiming He, Ping Chen, Yaojun Li, Jiaying Hengchuang Electric Power Design and Research Institute Co. Ltd Technology Department Jiaxin China School of Electrical and Automation Wuhan University Wuhan China

ISBN: (纸本)9798350348279

In the DC distribution network, photovoltaic power stations are connected to the grid through DC high voltage by a DC solid state transformer. In this paper, the control characteristics of the unidirectional power flow DC Solid-State Transformer based on LLC converter as the sub-module are studied. For this purpose, the DC grid-connected equivalent model is established to analyze control characteristics, resulting that the input current has reactive modulation and active modulation components, and the active component is proportional to the output current of the high-voltage rectifier, while the reactive component provides the basis for energy transmission. the power flow control mechanism is analyzed, the characteristics of gain changing with frequency are studied, and the selection of control objectives is discussed. Based on this, a double closed-loop control strategy with the system gain control as the outer loop and the sub-module input current control as the inner loop is proposed. the sub-module voltage balance is realized at the same time without additional voltage balance strategy. Finally, the validity of the proposed strategy is verified by simulation and experiment. © 2023 IEEE.

关键词： Electric power transmission

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A Fiber Optic Acceleration Sensor for Low-Frequency Vibration Detection and Its Application in Reactor Vibration 6

A Fiber Optic Acceleration Sensor for Low-Frequency Vibratio...

引用

6th international conference on Energy Systems and electrical Power, ICESEP 2024

作者： Zhang, Shuainan Gao, Chaofei Liu, Jingzhou Wang, Wei School of Electrical and Electronic Engineering North China Electric Power University Beijing China School of Automation Beijing Information Science and Technology University Beijing China

ISBN: (纸本)9798350353563

To address the limitations of piezoelectric accelerometers in measuring low-frequency vibrations under high-voltage conditions, this paper introduces a fiber optic accelerometer vibration sensor based on the Fiber Optic Extrinsic Fabry-Perot Interferometer (EFPI). After determining the material, size, and other parameters, modal and frequency response analyses of the sensitive unit were performed, revealing a natural frequency of 11,637 Hz. Additionally, COMSOL simulations were used to model the transmission of low-frequency vibration signals to the sensitive unit. the results demonstrated a strong correlation between the central displacement of the sensitive unit and the external vibration signals. A low-frequency vibration test platform was then constructed where both piezoelectric and fiber optic accelerometers were used to measure low-frequency vibration signals. the findings indicate that the fiber optic accelerometer is capable of measuring low-frequency vibration acceleration, with a sensitivity of approximately 1V/0.1g. Using this sensor, vibration tests were performed on a 25kV, 5.3kA high-voltage reactor. the measurements revealed that the vibration acceleration at the upper end of the reactor reached 0.53g, while at the side end it reached 0.21g. © 2024 IEEE.

关键词： Fabry-Perot interferometers

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the Smart Design Method of OPGW Grounding Based on the Multi-Dimensional Evaluation Indicators 6

The Smart Design Method of OPGW Grounding Based on the Multi...

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6th international conference on Energy Systems and electrical Power, ICESEP 2024

作者： Wei, Qi Jin, Guangxiang Wei, Yong Wang, Xianchun Yang, Huifeng State Grid Economic and Technological Research Institute CO. LTD. Research Center for Automation and Control Design Beijing China State Grid Hebei Information & Telecommunication Branch Shijiazhuang China State Grid Hengshui Electric Power Supply Company Hengshui China

ISBN: (纸本)9798350353563

With the advancement of the dual carbon goals and the construction of the new-type power system, the functional demands and the quality requirements for OPGW (optical fiber composite overhead ground wire) are gradually enhancing. Especially with the frequent ice disaster caused by the extreme weather, more economic and more scientific design method for the OPGW grounding is required for different situations. A smart design method of OPGW grounding mode based on the multi-dimentional evaluation indicators is proposed. the evaluation indicator and the optimization algorithm are the cores. We propose a new economic analysis model with the cost of the electric energy loss for OPGW grounding and eleven technical indicators. the method proposed is to realize the refinement of the OPGW grounding design. the simulation results show that base-by-base grounding is more economical than the sectional insulation grounding of OPGW in 220kV line. © 2024 IEEE.

关键词： Integrated circuit design

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