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Proportional Plus Integral Control for Set-Point Regulation of a Class of Nonlinear RLC Circuits

Fernando Castaños, Bayu Jayawardhana, Romeo Ortega, Eloísa García-Canseco
2009 Circuits, systems, and signal processing  
The property of relative passivity is then used to build simple, yet robust and globally stable, proportional plus integral controllers.  ...  In this paper we identify graph-theoretic conditions which allow us to write a nonlinear RLC circuit as port-Hamiltonian with constant input matrices.  ...  The main contribution of this paper is to show that for a large class of nonlinear RLC circuits with regulated voltage and current sources, we can exploit the property of passivity to ensure that the problem  ... 
doi:10.1007/s00034-009-9103-x fatcat:pzdwji424ng7pn3hjbjyakpwty

A Class of Nonlinear RLC Circuits Globally Stabilizable by Proportional plus Integral Controllers

Fernando Castaños, Bayu Jayawardhana, Romeo Ortega, Eloísa García-Canseco
2008 IFAC Proceedings Volumes  
The property of relative passivity is then used to build simple, yet robust and globally stable, Proportional plus Integral controllers. Copyright  ...  In this note we identify graph-theoretic conditions which allow to write an RLC circuit as port-Hamiltonian with constant input matrices.  ...  INTRODUCTION In this note, we look at the problem of global output regulation of nonlinear RLC networks using Proportional plus Integral (PI) controllers.  ... 
doi:10.3182/20080706-5-kr-1001.01047 fatcat:amlmutyosrbyveeoxpecnpzeti

Pressure Regulation in Nonlinear Hydraulic Networks by Positive and Quantized Controls

Claudio De Persis, Carsten Skovmose Kallesoe
2011 IEEE Transactions on Control Systems Technology  
After introducing the model for this class of networks, we show how to achieve semiglobal practical pressure regulation at designated points of the network by proportional control laws which use local  ...  Furthermore, motivated by the need of transmitting the values taken by the control laws to the pumps of the network in order to distribute the control effort, we study the pressure regulation problem using  ...  Trangbaek, Aalborg University, Aalborg, Denmark, for their help with the installation of the Matlab/Simulink platform for controlling the test setup, and T. Nørgaard Jensen and R.  ... 
doi:10.1109/tcst.2010.2094619 fatcat:isys44h6gbgcjffh3fb7f35fvi

Constant Power Load Stabilization in DC Microgrid Systems Using Passivity-Based Control with Nonlinear Disturbance Observer

Mustafa Alrayah Hassan, Yigang He
2020 IEEE Access  
To this end, the control robustness of the PBC strategy is improved by adding the nonlinear disturbance observer (NDO).  ...  The MATLAB simulation and hardwarein-loop (HIL) experimental results are presented to verify the control robustness of the proposed controller.  ...  The linear resistanceinductance-capacitance (RLC) circuit is a simple example to represent the passive system.  ... 
doi:10.1109/access.2020.2992780 fatcat:2k3y6p5j4vcprh676dmco7rfr4

Step-by-Step Eigenvalue Analysis With EMTP discrete-time Solutions

Jorge Ariel Hollman, José Ramón Marti
2010 IEEE Transactions on Power Systems  
A fundamental advantage of extracting the system eigenvalues directly from the EMTP solution is the ability of the EMTP to follow the characteristics of nonlinearities.  ...  In addition, the algorithm can be used as a tool to identify network partitioning subsystems suitable for real-time hybrid power system simulator environments, including the implementation of multi-time  ...  For instance, if we take ∆t the eigenvalues can still be reconstructed for large ∆t s, in the important case of a circuit with nonlinearities, large ∆t s may move the operating point too far in the nonlinear  ... 
doi:10.1109/tpwrs.2009.2039810 fatcat:vdv2bohdbza2dduzvoegka34ea

Robust Decentralized Tracking Voltage Control for Islanded Microgrids by Invariant Ellipsoids

Hisham M. Soliman, Ehab Bayoumi, Amer Al-Hinai, Mostafa Soliman
2020 Energies  
This manuscript presents a robust tracking (servomechanism) controller for linear time-invariant (LTI) islanded (autonomous, isolated) microgrid voltage control.  ...  The proposed tracker (state feedback integral control) rejects bounded external disturbances by minimizing the invariant ellipsoids of the MG dynamics.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/en13215756 fatcat:u7gxrixowzef5f62vgdfboixdm

Chaotic ferroresonance in power transformers

S. Mozaffari
1995 IEE Proceedings - Generation Transmission and Distribution  
The solution of the nonlinear equation for a typical ferroresonant circuit containing a power transformer is shown to be dependent on the accurate description of the ii magnetization curve.  ...  One of the fundamental properties of ferroresonance is the fact that several stable solutions can exist under steady-state conditions for a given circuit.  ...  EMTP has a wide range of circuit-modeling capabilities, from linear and nonlinear RLC circuit elements to circuit breakers, diodes, thyristors, transformers, dynamic synchronous machines, lightening arrestors  ... 
doi:10.1049/ip-gtd:19951749 fatcat:3x5en6yy7zd6bdw6jpydrpslfq

Harmonic Reduction Techniques in Renewable Energy Systems [chapter]

S. Sumathi, L. Ashok Kumar, P. Surekha
2015 Green Energy and Technology  
Systems with power quality issues and a case study.  ...  as DSTATCOM, DVR and UPQC. • Power quality problems and standards associated with power quality issues. • Procedure for measurement of power quality in PV system. • Harmonic reduction in Wind Energy Conversion  ...  Load Control Local loads can be switched on or off to: • Compensate slow active power variations of wind farms, • Perform a frequency regulation with a load control, • In order to facilitate the integration  ... 
doi:10.1007/978-3-319-14941-7_8 fatcat:6gaf5fbaybfldnpf2r3qavpjda

Grid-forming Control for Power Converters based on Matching of Synchronous Machines [article]

Catalin Arghir and Taouba Jouini and Florian Dorfler
2018 arXiv   pre-print
We consider the problem of grid-forming control of power converters in low-inertia power systems.  ...  characteristic of a SM: the presence of an internal rotating magnetic field.  ...  ) for µ in terms of input s l,dq and set-point v dc,ref .  ... 
arXiv:1706.09495v3 fatcat:r7cuw6bccbgund7tna4bwtcypy

Nearest Neighbor Control For Practical Stabilization of Passive Nonlinear Systems [article]

M. Z. Almuzakki and B. Jayawardhana and A. Tanwani
2021 arXiv   pre-print
This paper studies static output feedback stabilization of continuous-time (incrementally) passive nonlinear systems where the control actions can only be chosen from a discrete (and possibly finite) set  ...  of points.  ...  Pro- Ortega, R., Perez, J., Loria, A., Nicklasson, P., Sira-Ramirez, portional plus integral control for set-point regulation of a class H., 2013.  ... 
arXiv:2003.13284v2 fatcat:53734f6nhveczca6by3xz3rgge

Implementing a Piezoelectric Transformer for a Ferroelectric Phase Shifter Circuit

Anthony Roberts, Robert Romanofsky
2012 Integrated Ferroelectrics  
The phase undergoes a complete -resonance circuit model for the piezoelectric transformer is a series RLC circuit.  ...  For a given set of operating conditions and a limited bandwidth of operation (around the resonant point), a PT closely resembles a high Q factor, second order system.  ...  Such a circuit might aid future work in the design of future electronics based on the PT operating at cryogenic temperatures  ... 
doi:10.1080/10584587.2012.665306 fatcat:4uyu36wusrdpnpj3ammiw72g2q

Data-driven Discovery of Cyber-Physical Systems [article]

Ye Yuan, Xiuchuan Tang, Wei Pan, Xiuting Li, Wei Zhou, Hai-Tao Zhang, Han Ding, Jorge Goncalves
2018 arXiv   pre-print
This study proposes a general framework for reverse engineering CPSs directly from data. The method involves the identification of physical systems as well as the inference of transition logic.  ...  Such information has been proven essential for the assessment of the performance of CPS, the design of failure-proof CPS and the creation of design guidelines for new CPSs.  ...  The code implementation of IHYDE is available at https://github.com/HAIRLAB/CPSid.  ... 
arXiv:1810.00697v1 fatcat:jqtntrlcjbhe5dmx7pwls5ryc4

Resonant-repetitive combined control for stand-alone power supply units

Alessandro Lidozzi, Luca Solero, Fabio Crescimbini, Chao Ji, Pericle Zanchetta
2014 2014 IEEE Energy Conversion Congress and Exposition (ECCE)  
At the same time, the resonant controller is able to stabilize the system without the necessity of any further additional controller; the repetitive part of the scheme is implemented for the fine regulation  ...  The proposed control configuration is used to regulate the power supply output voltage providing very good tracking of the output voltage reference even in the presence of a non-linear load.  ...  The RR control shows higher gain in the neighborhood of the fundamental frequency with respect to the RC plus integral structure.  ... 
doi:10.1109/ecce.2014.6953800 fatcat:evb55yxpsbeebbskcmzfkjam34

Resonant–Repetitive Combined Control for Stand-Alone Power Supply Units

Alessandro Lidozzi, Chao Ji, Luca Solero, Pericle Zanchetta, Fabio Crescimbini
2015 IEEE transactions on industry applications  
At the same time, the resonant controller is able to stabilize the system without the necessity of any further additional controller; the repetitive part of the scheme is implemented for the fine regulation  ...  The proposed control configuration is used to regulate the power supply output voltage providing very good tracking of the output voltage reference even in the presence of a non-linear load.  ...  The RR control shows higher gain in the neighborhood of the fundamental frequency with respect to the RC plus integral structure.  ... 
doi:10.1109/tia.2015.2458960 fatcat:atotm7webnc4xa25r2puue7vuq

RF Mixers [chapter]

2010 Radio Frequency Circuit Design  
ACKNOWLEDGMENT The authors wish to acknowledge the help of Terry Jamison in the analysis of the impulse response data.  ...  These ICs require digital control words to set the desired frequency. 248 PHASE LOCK LOOPS Many integrated circuits are presently available that combine many of the PLL functions on a single chip.  ...  The dynamic range of a communication transmitter or receiver circuit is usually limited at the high-power point by nonlinearities and at the low-power point by noise.  ... 
doi:10.1002/9780470768020.ch11 fatcat:t332r6j2p5epjpfnsnoal3xalq
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