Fault Diagnosis Method for Rolling Element Bearings Under Variable Speed Based on TKEO and Fast-SC
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Failure Analysis and Prevention"
DOI: 10.1007/s11668-018-0383-y
Abstract: Abstract With rotating speed of rotating machinery, it is difficult to maintain stability in practical work which brings many difficulties to the condition monitoring of rotating machinery. When rolling element bearings work under variable speed,… read more here.
Keywords: fault; variable speed; method; speed ... See more keywords
State-space modeling and analysis of power assist unit-based variable-speed pump-controlled-motor drive system
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-017-0917-3
Abstract: The variable-speed electrohydraulic system has been widely employed in industry for its energy-saving performance. But its poor response and low accuracy, which were caused by the big inertias of electric motor and hydraulic pump, limit… read more here.
Keywords: system; variable speed; drive; power ... See more keywords
A proportional–integral (PI) law based variable speed technology for temperature control in indirect evaporative cooling system
Sign Up to like & getrecommendations! Published in 2019 at "Applied Energy"
DOI: 10.1016/j.apenergy.2019.113390
Abstract: Abstract The operation of indirect evaporative cooler (IEC) largely depends on the ambient temperature and humidity. To maintain stable indoor temperature, proper controller is essential. On-off control is a mature and stable control method used… read more here.
Keywords: system; variable speed; control; temperature ... See more keywords
Robust spacecraft rendezvous using a variable speed control moment gyro and thruster
Sign Up to like & getrecommendations! Published in 2021 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2021.106644
Abstract: Abstract Robust, co-ordinate free, thrust-vector tracking controls are designed for a single Variable Speed Control Moment Gyro (VSCMG). The proposed controls, based on an adaptive active disturbance rejection control and higher-order sliding mode control are… read more here.
Keywords: variable speed; thruster; control; control moment ... See more keywords
Study on a chiller of air conditioning system by sensing refrigerant pressure feedback control with stepless variable speed driving technology
Sign Up to like & getrecommendations! Published in 2019 at "Building and Environment"
DOI: 10.1016/j.buildenv.2018.12.024
Abstract: Abstract This study proposes a stepless variable speed driving technology for the refrigeration equipment of the air conditioning system, to realize the energy saving strategies by using the Variable Refrigerant Volume (VRV). The developed technology… read more here.
Keywords: stepless variable; driving technology; variable speed; speed driving ... See more keywords
Review of variable speed drive technology in beam pumping units for energy-saving
Sign Up to like & getrecommendations! Published in 2020 at "Energy Reports"
DOI: 10.1016/j.egyr.2020.09.018
Abstract: Abstract Beam pumping units have been widely used in oilfields worldwide due to its simple structure, strong field adaptability, and convenient maintenance. Different energy-saving technologies have also been broadly applied in various beam pumping units.… read more here.
Keywords: variable speed; energy; beam pumping; energy saving ... See more keywords
Assessments of variable-speed equipment for packaged rooftop units (RTUs) in the United States
Sign Up to like & getrecommendations! Published in 2018 at "Energy and Buildings"
DOI: 10.1016/j.enbuild.2018.01.007
Abstract: Abstract Packaged air-conditioning systems, such as rooftop units (RTUs), are widely used in small commercial buildings in the United States. Although new regulations and standards require new air-conditioning equipment to have multi-speed supply fan operation,… read more here.
Keywords: variable speed; energy; speed supply; speed ... See more keywords
A novel approach for robust control design of hidden synthetic inertia for variable speed wind turbines
Sign Up to like & getrecommendations! Published in 2021 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2021.107267
Abstract: Abstract This work presents a novel design methodology for hidden synthetic inertia control of variable speed wind turbines that considers the compromise between grid frequency response and operating limits of the wind turbine states. Two… read more here.
Keywords: synthetic inertia; wind; variable speed; control ... See more keywords
A Tailored ADMM Approach for Power Coordination in Variable Speed Drives
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.1489
Abstract: Abstract Variable speed drives (VSDs) are AC/DC/AC power converters that drive electric machines at variable frequency. In a VSD the electric energy is first rectified to DC, then stored in a DC-link, and finally inverted… read more here.
Keywords: tailored admm; speed drives; variable speed; admm approach ... See more keywords
Nonlinear Control of a Fully-Fed Variable Speed Pumped Storage Plant
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.456
Abstract: This paper presents the nonlinear control of a Fully-Fed Synchronous Machine based Variable Speed Pumped Storage Plant (FFSM PSP). First, a model is developed and the control objective is established followed by the control design.… read more here.
Keywords: control fully; variable speed; speed pumped; control ... See more keywords
Coordinated Variable Speed Limit, Ramp Metering and Lane Change Control of Highway Traffic
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.982
Abstract: Abstract Integrated variable speed limit and ramp metering control for highway traffic is expected to smooth the traffic flow and improve the mobility of highway networks. Our recent results showed that variable speed limit control… read more here.
Keywords: traffic; control; variable speed; speed limit ... See more keywords