Proportional Power Sharing Consensus in Distributed Generators

2018 ◽  
Author(s):  
Farzad Aalipour ◽  
Tuhin Das
Keyword(s):  
Power Sharing ◽  
Real Time Control ◽  
Dc Microgrid ◽  
Control Approach ◽  
Load Power ◽  
Time Control ◽  
Distributed Generators ◽  
Power Load ◽  
Control Scheme ◽  
Power Fluctuations

In this study, the problem of proportional power sharing consensus in a DC microgrid (MG) consisting of distributed generators (DGs) is discussed. Presently, MGs face challenges involving the intermittent nature of DGs and load power fluctuations. To address these challenges, three different control schemes are proposed. The first consensus-based control algorithm is introduced to address proportional power sharing in the presence of variations in the DGs rate, i.e., power capacity. Secondly, in regards to load power fluctuations, a control scheme is designed to enable the DGs to compute their individual proportional power share in a distributed manner. Eventually, a comprehensive real-time control approach is developed through which the DGs cooperatively maintain the required power load and achieve the updated proportional share simultaneously. To demonstrate the effectiveness of the proposed approaches simulations results for a simple network of DGs are presented.

Hierarchical control of DC microgrid with dynamical load power sharing

2019 ◽  
Vol 239 ◽  
pp. 1-11 ◽  
Author(s):  
Minghan Yuan ◽  
Yang Fu ◽  
Yang Mi ◽  
Zhenkun Li ◽  
Chengshan Wang
Keyword(s):  
Hierarchical Control ◽  
Power Sharing ◽  
Dc Microgrid ◽  
Load Power

scholarly journals On the Use of a Real-Time Control Approach for Urban Stormwater Management

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2842
Author(s):  
Mario Maiolo ◽  
Stefania Anna Palermo ◽  
Anna Chiara Brusco ◽  
Behrouz Pirouz ◽  
Michele Turco ◽  
...  
Keyword(s):  
Real Time ◽  
Stormwater Management ◽  
Risk Mitigation ◽  
Real Time Control ◽  
Urban Stormwater ◽  
Real Time System ◽  
Control Approach ◽  
Urban Stormwater Management ◽  
Time Control ◽  
Control Configuration

The real-time control (RTC) system is a valid and cost-effective solution for urban stormwater management. This paper aims to evaluate the beneficial effect on urban flooding risk mitigation produced by applying RTC techniques to an urban drainage network by considering different control configuration scenarios. To achieve the aim, a distributed real-time system, validated in previous studies, was considered. This approach uses a smart moveable gates system, controlled by software agents, managed by a swarm intelligence algorithm. By running the different scenarios by a customized version of the Storm Water Management Model (SWMM), the findings obtained show a redistribution of conduits filling degrees, exploiting the whole system storage capacity, with a significant reduction of node flooding and total flood volume.

scholarly journals Teleoperation Control Design with Virtual Force Feedback for the Cable-Driven Hyper-Redundant Continuum Manipulator

2020 ◽  
Vol 10 (22) ◽  
pp. 8031
Author(s):  
Long Qin ◽  
Fanghao Huang ◽  
Zheng Chen ◽  
Wei Song ◽  
Shiqiang Zhu
Keyword(s):  
Force Feedback ◽  
Inverse Kinematic ◽  
Real Time Control ◽  
Kinematics Model ◽  
Time Control ◽  
Virtual Force ◽  
Control Scheme ◽  
Continuum Manipulators ◽  
Transmission Structure ◽  
And Control

Hyper-redundant continuum manipulators present dexterous kinematic skills in complicated tasks and demonstrate promising potential in underground exploration, intra-cavity inspection, surgery, etc. However, the hyper-redundancy, which endows much dexterity and flexibility, brings a huge challenge to the kinematics solution and control of the continuum manipulators. Due to the pseudoinverse calculation of high-order Jacobian matrix or iteration, many inverse kinematic solution approaches of continuum manipulators are very time-consuming, which extremely limit their applicability in real-time control. Additionally, it is often difficult for the manipulators to perform the tasks well in complex scenarios due to lack of human intervention. Therefore, in this paper, a simplified kinematics model of a typical hyper-redundant manipulator is proposed based on its unique geometry relationships, where the mapping relationships between the actuators’ rotation and the end-effector’s position are derived through the analysis of its driving subsystem and motion subsystem, in particular the joint modules. To perform the tasks of manipulators with the help of operators, a teleoperation control scheme with modified wave transmission structure is designed to achieve the guaranteed stability and improved transparency, and the leader’s trajectory and generated force feedback are the transmitted signals in the communication channel. Specifically, a virtual force feedback generation algorithm is developed in the teleoperation control scheme via the processing tracking errors, which can improve the operators’ assistance and perception during the teleoperation process. The practical experiments with comparative wave variable structures in two different sets are implemented to verify the effectiveness of proposed kinematics model and control scheme.

Dynamic Control of Curve-Constrained Hyper-Redundant Manipulators

2004 ◽  
Vol 16 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Shugen Ma ◽  
◽  
Mitsuru Watanabe ◽  
Keyword(s):  
Degrees Of Freedom ◽  
Dynamic Control ◽  
Redundant Manipulators ◽  
Redundant Manipulator ◽  
Real Time Control ◽  
Feed Forward ◽  
Manipulator Dynamics ◽  
Time Control ◽  
Control Scheme ◽  
Feed Forward Controller

Hyper-redundant manipulators have high number of kinematic degrees of freedom, and possess unconventional features such as the ability to enter narrow spaces while avoiding obstacles. To control these hyper-redundant manipulators accurately, manipulator dynamics should be considered. This is, however, time-comsuming and makes implementation of real-time control difficult. In this paper, we propose a dynamic control scheme for hyper-redundant manipulators, which is based on analysis in defined posture space where three parameters were used to determine the manipulator posture. Manipulator dynamics are modeled on the parameterized form with the parameter of the posture space path. The posture space path-tracking feed-forward controller is then formulated on the basis of a parameterized dynamic equation. Computer simulation, in which a hyper-redundant manipulator traces the posture space path well by using the proposed feed-forward controller, proved that the hyper-redundant manipulator tracks the workspace path accurately.

scholarly journals Using Graphics Processing Units and Compute Shaders in Real Time Multimodel Adaptive Robust Control

Electronics ◽  
2021 ◽  
Vol 10 (20) ◽  
pp. 2462
Author(s):  
Cosmin-Constantin Mihai ◽  
Ciprian Lupu
Keyword(s):  
Robust Control ◽  
Real Time ◽  
Systems Engineering ◽  
Graphics Processing Units ◽  
Adaptive Robust Control ◽  
Real Time Control ◽  
Time Control ◽  
Control Scheme ◽  
Graphics Processing ◽  
Time Systems

Graphics processing units and video cards have seen a surge of usage in domains other than graphics computers, due to advances in hardware and software technologies; however, little uptake has been in the domain of systems engineering and real time control. This research article will demonstrate the use of video cards in multimodel adaptive robust control, using openGL and compute shaders. A software simulation will show the behavior of the adaptive robust multimodel control scheme as the target process is exposed to both parametric and structural disturbances and will show the viability of using graphics processing units in real time systems control.

scholarly journals Virtual Oscillator Control of Multiple Solar PV Inverters for Microgrid Applications

2020 ◽  
Vol 24 (5) ◽  
pp. 173-183
Author(s):  
Han Min Htut ◽  
Wijarn Wangdee
Keyword(s):  
Control Strategy ◽  
Control Algorithm ◽  
Sliding Mode ◽  
Power Sharing ◽  
Solar Pv ◽  
Maximum Power Point ◽  
Load Power ◽  
Control Scheme ◽  
Power Point ◽  
Pv Generation

This paper proposes the inverter control strategy for multiple solar PV generation sources based on the two-stage converters with a combination of the modified virtual oscillator control (VOC) and the cascaded sliding mode control (SMC). With this proposed control strategy, the load power-sharing in proportion to the inverter rating is guaranteed when the solar PV output satisfies the power-sharing requirement. On the other hand, the control algorithm autonomously forces the solar PV to operate at the maximum power point if the solar PV output is lower than the power-sharing requirement. Various operating scenarios have been simulated to appreciate the effectiveness of the proposed control scheme for ensuring the load-power sharing and maintaining the voltage and frequency stability of the islanded microgrid containing a 100% solar PV generation.

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