Review of Recent Advances in the Drive Method of Hydraulic Control Valve

Li, Yanchao; Li, Ruichuan; Yang, Junru; Yu, Xiaodong; Xu, Jikang

doi:10.3390/pr11092537

Cited by 5 publications

(3 citation statements)

References 113 publications

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“…MHG control technique is older and comprises of both hydraulic and mechanical components. Since electric components perform better and are more flexible than mechanical components, modern hydraulic turbine governors use electro-hydraulic systems [16]. The PID controller that comes with these electrohydraulic governors is called an electro-hydraulic based PID governor, and it regulates the system frequency during significant load fluctuations.…”

Section: Proper Coordination and Communication Between Multiplementioning

confidence: 99%

Comparative Studies on Load Frequency Control with Different Governors connected to Mini Hydro Power Plant via PSCAD Software

Masmali,

Elimy,

Fterich

et al. 2024

Eng. Technol. Appl. Sci. Res.

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Mini Hydropower Plants (MHPPs) are increasingly popular for rural electrification in developing nations due to their ecologically friendly operation. However, constant load fluctuation in these facilities poses a speed control issue. The mechanical, hydraulic governor, commonly used to face this challenge, cannot provide the best speed control due to its mechanical component system. Thus, an electrohydraulic PID-based governor is proposed to control the frequency and speed of MHPPs in a distribution network. This governor’s suitability for regulating the system's frequency in response to significant load variations within the distribution network is going to be determined in this study. The small hydropower plant and distribution system are modeled using the PSCAD software. A comparison between the mechanical hydraulic governor and the electro-PID governor was conducted by analyzing load fluctuations between 5% and 20%. The electro-PID governor responded faster and more actively to load connections and disconnections than the mechanical hydraulic governor, as the latter reduces large overshoots and undershoots, which can be dangerous and damaging to equipment. The electro-PID governor also helps to maintain a stable frequency within acceptable limits, ensuring smooth operation and minimizing the risk of system failures or disruptions.

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Section: Proper Coordination and Communication Between Multiplementioning

confidence: 99%

Comparative Studies on Load Frequency Control with Different Governors connected to Mini Hydro Power Plant via PSCAD Software

Masmali,

Elimy,

Fterich

et al. 2024

Eng. Technol. Appl. Sci. Res.

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“…VCM actuators, which most commonly have a structure similar to hard disk drives (HDDs), are characterized by their small size in the direction of the rotational axis, allowing many actuators to be placed side-by-side in small spaces for miniature organ instruments [20,21]. This property is not shared with other organ mechanism solutions with similar characteristics, such as the use of special electromagnets and stepping motors [22,23]. This paper presents a solution for the pipe organ's mechatronic system where the actuator is a Voice Coil Motor (VCM).…”

Section: Introductionmentioning

confidence: 99%

A Control Strategy for Mechatronic Action of a Pipe Organ Using a VCM Actuator

Kowol,

Nowak,

Lo Sciuto

2023

Electronics

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In pipe organs, the oldest and most commonly chosen system for connecting the organist operator to the source of sound (i.e., the pipes to the action) is mechanical action. This article presents a mechatronic action with a voice coil motor (VCM) actuator to reproduce the action of a mechanical action on pipe organ. The mechatronic action makes it feasible to mechanically separate the keyboard from the pipes and to determine the control strategy for the mechatronic action by utilizing sensors, an actuator and a microcontroller. The time response of the organ pipe with mechanical action and the requirements for mechatronic action were outlined. The control strategy was preceded by measurements of the mechanical action and measurements of the behavior of the VCM actuator system, which moves the pneumatic valve pallet. Two control strategies, open-loop and closed-loop, were proposed and analyzed for the mechatronic action with the VCM actuator. According to the results, the suggested control strategies successfully reproduce the mechanical action’s behavior to a good extent.

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“…For this reason, it is necessary to focus attention on possible innovations in proportional directional valve designs that can improve the control characteristics and stability of the entire hydraulic system. In terms of design, spool valves are the most used to control the direction and magnitude of flow [5]. Various hydraulic applications operate under different operating conditions, so it is necessary to design the appropriate proportional directional valve for each application.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Flow Force Acting on the Spool of Proportional Directional Valve

Ledvoň,

Hružík,

Bureček

et al. 2023

Processes

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This paper deals with the experimental and numerical analysis of the flow force acting on the spool of a proportional directional valve. The flow force arises due to the fluid flow through the flow path of the proportional directional valve and significantly influences the dynamics of the valve spool. The valve under investigation is a three-position four-way proportional directional valve with zero spool lap and feedback from the spool position. The dependence of the valve spool flow force on the volumetric flow rate is measured as part of the experiment. The measurements are performed for different spool displacements. The measured data will be used to verify the numerical simulations. The proportional directional valve was modified so that a force sensor could be included on the spool axis to realize the experiment. Firstly, the flow force is measured as the fluid passes through the two flow paths of the valve (PB and AT). Subsequently, the experimental setup is modified to determine the flow force when the fluid passes through each flow path separately. The measurements are compared. Simulations of the flow through the proportional directional valve are performed using Ansys Fluent 2022 R2 software to determine the flow forces acting on the valve spool. Simulations are performed for the selected spool positions of the proportional directional valve. Finally, the results of the simulation and the experiment are compared. The contribution of this study is a CFD model of the flow paths of the proportional directional valve verified by experiment. The CFD model will allow the flow force analysis for different flow path geometries of the investigated valve. Experimental analysis of flow force is performed over the entire spool stroke at different volumetric flow rates. The flow forces are measured for each flow path separately and for both flow paths simultaneously.

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Review of Recent Advances in the Drive Method of Hydraulic Control Valve

Cited by 5 publications

References 113 publications

Comparative Studies on Load Frequency Control with Different Governors connected to Mini Hydro Power Plant via PSCAD Software

Comparative Studies on Load Frequency Control with Different Governors connected to Mini Hydro Power Plant via PSCAD Software

A Control Strategy for Mechatronic Action of a Pipe Organ Using a VCM Actuator

Experimental and Numerical Analysis of Flow Force Acting on the Spool of Proportional Directional Valve

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