Results 1 to 10 of about 1,157,052 (204)

Regulation Characteristics and Load Optimization of Pump-Turbine in Variable-Speed Operation

open access: yesEnergies, 2021
In order to improve the operating and regulation characteristics of the hydropower unit and to stabilize the load fluctuations, variable-speed pumped storage technology based on converters has been proposed and given more attention recently.
He Wang, Zhijie Ma
doaj   +3 more sources

Active Transmission Module for Generator Speed Regulation [PDF]

open access: yesIEEE Access, 2020
In this paper, an active transmission motion control system is proposed that appropriately regulates the speed of a generator. In conventional approaches to power electronic control, an AC/DC frequency converter is essential for the generator to be ...
I-Haur Tsai   +3 more
doaj   +2 more sources

Improved Sliding Mode Control for Permanent Magnet Synchronous Motor Speed Regulation System

open access: yesApplied Sciences, 2018
Due to advantages such as high speed, high accuracy, low maintenance and high reliability, permanent magnet synchronous motor (PMSM) servo systems have been employed in many fields.
Junbing Qian   +3 more
doaj   +3 more sources

SPEED REGULATION BY IN-CAR ACTIVE ACCELERATOR PEDAL

open access: yesIATSS Research, 2002
The effects on speeds and speed distribution were studied in a large scale field trial with an in-car system for speed adaptation in the city of Lund, Sweden.
Magnus HJÄLMDAHL
doaj   +2 more sources

A New Hydraulic Speed Regulation Scheme: Valve-Pump Parallel Variable Mode Control

open access: yesIEEE Access, 2018
To improve the comprehensive performances of hydraulic speed regulation systems, this paper proposes and develops a new control scheme, valve-pump parallel variable mode control, which can adopt different control modes in different speed regulation ...
Haigang Ding, Jiyun Zhao, Quanmin Zhu
doaj   +3 more sources

Speed Regulation Method Using Genetic Algorithm for Dual Three-phase Permanent Magnet Synchronous Motors

open access: yesCES Transactions on Electrical Machines and Systems, 2023
Dual three-phase Permanent Magnet Synchronous Motor (DTP-PMSM) is a nonlinear, strongly coupled, high-order multivariable system. In today's application scenarios, it is difficult for traditional PI controllers to meet the requirements of fast response ...
Xiuhong Jiang, Yuying Wang, Jiarui Dong
doaj   +1 more source

Electromechanical Coupling Dynamic Characteristics of Differential Speed Regulation System Considering Inverter Harmonics Under Variable Operating Conditions

open access: yesIEEE Access, 2022
The differential speed regulation system driven by inverters, motors and differential gear trains is a complex electromechanical system that achieves speed regulation and energy savings efficiently and economically.
Dianrui Wang   +4 more
doaj   +1 more source

Improved Non-Singular Fast Terminal Sliding Mode Control for SPMSM Speed Regulation

open access: yesIEEE Access, 2023
An improved non-singular fast terminal sliding mode control (INFTSMC) is proposed in this study, to improve the dynamic speed regulation and tracking accuracy of a surface-mounted permanent magnet synchronous motor (SPMSM) system.
Youngjae Kim   +3 more
doaj   +1 more source

Finite-Time Control for Dual Three-Phase Hybrid Excitation Synchronous Machine Based on Torque Sensorless Current Coordinative Strategy

open access: yesActuators, 2023
In this paper, the finite time speed regulation problem is investigated for a dual three-phase hybrid excitation synchronous machine (DTP-HESM) without a torque meter. The electromagnetic torque estimation required in the current coordinative strategy is
Bin Dai, Zixing Wu
doaj   +1 more source

Design and Control of an Energy-Efficient Speed Regulating Method for Pump-Controlled Motor System under Negative Loads

open access: yesMachines, 2023
Pump-controlled motor hydrostatic system (PCMH) is widely applied for rotary driving in heavy industry and construction machinery due to its high-power density and efficient speed regulation performance.
Huashuai Wang   +4 more
doaj   +1 more source

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