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[null,"1.","Record Nr.",null,"UNICASRAV0108048"]
[null,null,"Autore",null,"Sartori, Giovanni <1924-2017>"]
[null,null,"Titolo",null,"Il cittadino totale : partecipazione, eguaglianza e liberta nelle democrazie d'oggi / Liberalismo e democrazia di Giovanni Sartori ; Cittadini e partecipazione al di la della democrazia rappresentativa? di Ralf Dahrendorf"]
[null,null,"Pubbl/distr/stampa",null,"Torino, : Biblioteca della Liberta, 1977"]
[null,null,"Descrizione fisica",null,"59 p. ; 21 cm."]
[null,null,"Collana",null,"Quaderni di Biblioteca della libertà ; 3"]
[null,null,"Disciplina",null,"321.8"]
[null,null,"Soggetti",null,"Democrazia"]
[null,null,"Lingua di pubblicazione",null,"Italiano"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,"2.","Record Nr.",null,"UNINA9910830140203321"]
[null,null,"Autore",null,"Lian Ryan Kuo-Lung"]
[null,null,"Titolo",null,"Harmonic modeling of voltage source converters using simple numerical methods / / Ryan Kuo-Lung Lia, Ramadhani Kurniawan Subroto. Bing Hao Lin"]
[null,null,"Pubbl/distr/stampa",null,"Hoboken, New Jersey : , : John Wiley & Sons, Incorporated, , [2021]"]
[{"$nulls":4},"©2021"]
[null,null,"ISBN",null,"1-119-52715-5"]
[{"$nulls":4},"1-119-52719-8"]
[{"$nulls":4},"1-119-52714-7"]
[null,null,"Descrizione fisica",null,"1 online resource (419 pages)"]
[null,null,"Collana",null,"IEEE Press."]
[null,null,"Disciplina",null,"621.3815322"]
[null,null,"Soggetti",null,"Harmonics (Electric waves) - Mathematical models"]
[{"$nulls":4},"Electromagnetic interference - Mathematical models"]
[{"$nulls":4},"Electric power-plants - Equipment and supplies"]
[{"$nulls":4},"Electric current converters - Mathematical models"]
[{"$nulls":4},"Numerical analysis"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,"Nota di contenuto",null,"Cover -- Title Page -- Copyright -- Contents -- Preface -- Acknowledgments -- Symbols -- Chapter 1 Fundamental Theory -- 1.1 Background -- 1.2 Definition of Harmonics -- 1.3 Fourier Series -- 1.3.1 Trigonometric Form -- 1.3.2 Phasor Form -- 1.3.3 Exponential Form -- 1.4 Waveform Symmetry -- 1.4.1 Even Symmetry -- 1.4.2 Odd Symmetry -- 1.4.3 Half‐Wave Symmetry -- 1.5 Phase Sequence of Harmonics -- 1.6 Frequency Domain and Harmonic Domain -- 1.7 Power Definitions -- 1.7.1 Average Power -- 1.7.2 Apparent and Reactive Power -- 1.8 Harmonic Indices -- 1.8.1 Total Harmonic Distortion (THD) -- 1.8.2 Total Demand Distortion (TDD) -- 1.8.3 True Power Factor -- 1.9 Detrimental Effects of Harmonics -- 1.9.1 Resonance -- 1.9.2 Misoperations of Meters and Relays -- 1.9.3 Harmonics Impact on Motors -- 1.9.4 Harmonics Impact on Transformers -- 1.10 Characteristic Harmonic and Non‐Characteristic Harmonic -- 1.11 Harmonic Current Injection Method -- 1.12 Steady‐State vs. Transient Response -- 1.13 Steady‐State Modeling -- 1.14 Large‐Signal Modeling vs. Small‐Signal Modeling -- 1.15 Discussion of IEEE Standard (STD) 519 -- 1.16 Supraharmonics -- Chapter 2 Power "]
[{"$nulls":4},"Electronics Basics -- 2.1 Some Basics -- 2.2 Semiconductors vs. Wide Bandgap Semiconductors -- 2.3 Types of Static Switches -- 2.3.1 Uncontrolled Static Switch -- 2.3.2 Semi‐Controllable Switches -- 2.3.3 Controlled Switch -- 2.4 Combination of Switches -- 2.5 Classification Based on Commutation Process -- 2.6 Voltage Source Converter vs. Current Source Converter -- Chapter 3 Basic Numerical Iterative Methods -- 3.1 Definition of Error -- 3.2 The Gauss-Seidel Method -- 3.3 Predictor‐Corrector -- 3.4 Newton's Method -- 3.4.1 Root Finding -- 3.4.2 Numerical Integration -- 3.4.3 Power Flow -- 3.4.4 Harmonic Power Flow -- 3.4.5 Shooting Method -- 3.4.6 Advantages of Newton's Method -- 3.4.7 Quasi‐Newton Method."]
[{"$nulls":4},"3.4.8 Limitation of Newton's Method -- 3.5 PSO -- Chapter 4 Matrix Exponential -- 4.1 Definition of Matrix Exponential -- 4.2 Evaluation of Matrix Exponential -- 4.2.1 Inverse Laplace Transform -- 4.2.2 Cayley-Hamilton Method -- 4.2.3 Padé Approximation -- 4.2.4 Scaling and Squaring -- 4.3 Krylov Subspace Method -- 4.4 Krylov Space Method with Restarting -- 4.5 Application of Augmented Matrix on DC‐DC Converters -- 4.6 Runge-Kutta Methods -- Chapter 5 Modeling of Voltage Source Converters -- 5.1 Single‐Phase Two‐Level VSCs -- 5.1.1 Switching Functions -- 5.1.2 Switched Circuits -- 5.2 Three‐Phase Two‐Level VSCs -- 5.3 Three‐Phase Multilevel Voltage Source Converter -- 5.3.1 Multilevel PWM -- 5.3.2 Diode Clamped Multilevel VSCs -- 5.3.3 Flying Capacitor Multilevel VSCs -- 5.3.4 Cascaded Multi‐Level VSCs -- 5.3.5 Modular Multi‐Level VSC -- Chapter 6 Frequency Coupling Matrices -- 6.1 Construction of FCM in the Harmonic Domain -- 6.2 Construction of FCM in the Time Domain -- Chapter 7 General Control Approaches of a VSC -- 7.1 Reference Frame -- 7.1.1 Stationary‐abc Frame -- 7.1.2 Stationary‐&lt -- 3:spiinlinemath 0:display&amp -- equals -- \"inline\" 0:overflow&amp -- equals -- \"scroll\" &gt -- αβ Frame -- 7.1.3 Synchronous‐&lt -- 3:spiinlinemath 0:display&amp -- equals -- \"inline\" 0:overflow&amp -- equals -- \"scroll\" &gt -- dq Frame -- 7.1.4 Phase‐Locked Loop -- 7.2 Control Strategies -- 7.2.1 Vector‐Current Controller -- 7.2.2 Direct Power Controller -- 7.2.3 DC‐bus Voltage Controller -- 7.2.4 Circulating Current Controller -- Chapter 8 Generalized Steady‐State Solution Procedure for Closed‐Loop Converter Systems -- 8.1 Introduction -- 8.2 Generalized Procedure -- 8.2.1 Step 1: Determine How and Where to Break the Loop -- 8.2.2 Step 2: Check if the Calculation Flows of the Broken System are Feasible."]
[{"$nulls":4},"8.2.3 Step 3: Determine What Domain of Each Component in the System Should be Modeled -- 8.2.4 Step 4: Formulate the Mismatch Equations -- 8.2.5 Step 5: Iterate to Find the Solution -- 8.3 Previously Proposed Methods Derived from the Proposed Solution Procedures -- 8.3.1 Steady‐State Methods Derived from Loop‐Breaking 1 Method -- 8.3.2 Steady‐State Methods Derived from Loop‐Breaking 2 Method -- 8.4 The Loop‐Breaking 3 Method -- Chapter 9 Loop‐Breaking 1 Method -- 9.1 A Typical Two‐Level VSC with AC Current Control and DC Voltage Control -- 9.2 Loop‐Breaking 1 Method for a Two‐Level VSC -- 9.2.1 Block 1 -- 9.2.2 Current Controller Block -- 9.2.3 Voltage Controller Block -- 9.3 Solution Flow Diagram -- 9.3.1 Initialization -- 9.3.2 Jacobian Matrix -- 9.3.3 Number of Modulating Voltage Harmonics to be Included -- Chapter 10 Loop‐Breaking 2 Method for Solving a VSC -- 10.1 Modeling for a Closed‐Loop DC‐DC Converter -- 10.1.1 Model of the Buck Converter -- 10.1.2 Constraints of Steady‐State -- 10.1.3 Switching Time Constraints -- 10.1.4 Solution Flow Diagram -- 10.2 Two‐Level VSC Modeling: Open‐Loop Equations -- 10.2.1 Steady‐State Constraints -- 10.2.2 Switching Time Constraints -- 10.2.3 Solution Flow Diagram -- 10.2.4 Initialization -- 10.2.5 Jacobian Matrix -- 10.3 "]
[{"$nulls":4},"Comparison Between the LB 1 and LB 2 Methods -- 10.3.1 Case #1: Balanced System -- 10.3.2 Case #2: Unbalanced System with AC Waveform Exhibiting Half‐Wave Symmetry -- 10.3.3 Case #3: Unbalanced System, No Waveform Symmetry -- 10.4 Large‐Signal Modeling for Line‐Commutated Power Converter -- 10.4.1 Discontinuous Conduction Mode -- 10.4.2 Continuous Conduction Mode -- 10.4.3 Steady‐State Constraint Equations -- 10.4.4 General Comments -- Chapter 11 Loop‐Breaking 3 Method -- 11.1 OpenDSS -- 11.2 Interfacing OpenDSS with MATLAB -- 11.3 Interfacing OpenDSS with Harmonic Models of VSCs."]
[{"$nulls":4},"Chapter 12 Small‐Signal Harmonic Model of a VSC -- 12.1 Problem Statement -- 12.2 Gauss-Seidel LB 3 and Newton LB 3 -- 12.2.1 Current Injection Method -- 12.2.2 Norton Circuit Method -- 12.3 Small‐Signal Analysis of DC‐DC Converter -- 12.4 Small‐Signal Analysis of a Two‐Level VSC -- 12.4.1 Approach from Section 12.3 -- 12.4.2 Simpler Approach -- Chapter 13 Parameter Estimation for a Single VSC -- 13.1 Background on Parameter Estimation -- 13.2 Parameter Estimator Based on White‐Box‐and‐Black‐Box Models -- 13.3 Estimation Validations -- 13.3.1 Experimental Validation -- 13.3.2 PSCAD/EMTDC Validation -- Chapter 14 Parameter Estimation for Multiple VSCs with Domain Adaptation -- 14.1 Introduction of Deep Learning -- 14.2 Domain Adaptation -- 14.3 Parameter Estimation for Multiple VSCs -- 14.4 Notations for DA -- 14.5 Supervised Domain Adaptation for Regression -- 14.6 Supervised Domain Adaptation for Classification -- 14.7 Test Setup -- 14.7.1 Data Generator -- 14.7.2 Data Preprocessing -- 14.8 Performance Metrics -- 14.8.1 R square (Regression) -- 14.8.2 Mean Absolute Percentage Error, MAPE (Regression) -- 14.8.3 Accuracy (Classification) -- 14.8.4 F1 score (Classification) -- 14.9 Test Results -- 14.9.1 Classification Task on Multiple VSC -- 14.9.2 Regression Task on Multiple VSC -- 14.10 Software for Running the Codes -- 14.11 Implementation of Domain Adaptation -- 14.11.1 Data Generation -- 14.11.2 Regression -- 14.11.3 Classification Network -- References -- Index -- EULA."]
[null,null,null,"Sommario/riassunto","\"The ac electric power systems are essentially designed to operate with sinusoidal voltages and currents at frequencies of 50 or 60 Hz. However, certain types of power components or loads produce currents and voltages with frequencies that are integer multiples of these frequencies (i.e. the fundamental frequencies). These higher frequencies are a form of electrical pollution known as power system harmonics. Power system harmonics are not a new phenomenon, and it is as old as the distribution of alternating current, which began in 1895-1896 [5]. It is reported that in 1893, Charles Proteus Steinmetz had worked on the problem of motor heating while working at Thomson-Houston [6]. After rigorous calculations and experimental validation, Steinmetz concluded that the problem was due to the resonance in the transmission circuit feeding the plant and a generator with a substantial amount of waveform distortion. Consequently, Steinmetz proposed two solutions to overcome this harmonic problem. The first was to reduce the system frequency to one-half of its original value. That is, to reduce the original frequency value of 125 Hz to a new value of 62.5 Hz. Note that at that time, most of the single-phase generator were operated at 125 Hz, 140 Hz or 1331\"--"]