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Challenge and Research Trends of Solar Concentrators
| Challenge and Research Trends of Solar Concentrators |
| Autore | Liang Dawei |
| Pubbl/distr/stampa | Basel, : MDPI - Multidisciplinary Digital Publishing Institute, 2022 |
| Descrizione fisica | 1 electronic resource (178 p.) |
| Soggetto topico |
Technology: general issues
History of engineering & technology |
| Soggetto non controllato |
luminescent solar concentrator
solar spectrum splitter power generation in space microalgae beam merging multirod Nd:YAG solar furnace solar flux homogenizer solar laser TEM00-mode solar pumping twisted light guide top hat doughnut-shaped nanofluid conical concentrator system performance comparison thermal efficiency Fresnel lens Gaussian source groove number solar flux optical efficiency full width at half maximum concentrator light guide optical fiber solar system solar daylighting laser parabolic mirror solar concentrator collecting efficiency conical solar concentrator performance analysis solar energy Ce:Nd:YAG aspherical lens side-pumped uniformity light-guide homogenizer solar-pumped laser laser efficiency |
| ISBN | 3-0365-6038-6 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910674052203321 |
Liang Dawei
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| Basel, : MDPI - Multidisciplinary Digital Publishing Institute, 2022 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Parameter Estimation of Permanent Magnet Synchronous Machines
| Parameter Estimation of Permanent Magnet Synchronous Machines |
| Autore | Zhu Zi Qiang |
| Edizione | [1st ed.] |
| Pubbl/distr/stampa | Newark : , : John Wiley & Sons, Incorporated, , 2025 |
| Descrizione fisica | 1 online resource (291 pages) |
| Disciplina | 621.46 |
| Altri autori (Persone) |
LiuKan
LiangDawei |
| Collana | IEEE Press Series on Control Systems Theory and Applications Series |
| Soggetto topico |
Parameter estimation
Permanent magnet motors |
| ISBN |
1-394-28045-9
1-394-28044-0 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Cover -- Half Title Page -- Title Page -- Copyright -- Contents -- Authors -- Preface -- List of Abbreviations -- List of Symbols -- Chapter 1: General Introduction -- 1.1 Introduction -- 1.2 Permanent Magnet Machines -- 1.3 Basic Equations and Machine Parameters -- 1.3.1 Fundamental Mathematical Model for PMSMs -- 1.3.2 Mathematical Model Considering Magnetic Saturation, Thermal Effect, and Iron Loss -- 1.3.2.1 Influence of Magnetic Saturation -- 1.3.2.2 Influence of Temperature -- 1.3.2.3 Influence of Iron Loss -- 1.4 Drives and Control Strategies -- 1.4.1 Drive System of PMSM -- 1.4.2 Space Vector Pulse Width Modulation -- 1.5 Outline of Parameter Estimation Techniques -- 1.5.1 Offline Parameter Estimation -- 1.5.2 Online Parameter Estimation -- 1.6 Scope of This Book -- References -- Chapter 2: Critical Issues with Online Parameter Estimation -- 2.1 Rank-Deficient Problem -- 2.1.1 Rank-Deficient Issue -- 2.1.2 Experimental Analysis and Results -- 2.2 Non-linearity of VSI -- 2.2.1 Modelling of VSI Non-linearity -- 2.2.1.1 VSI Modelling in abc Stationary Reference Frame -- 2.2.1.2 VSI Modelling in dq Rotating Reference Frame -- 2.2.2 VSI Non-linearity Estimation and Compensation -- 2.2.2.1 Estimation of VSI Non-linearity -- 2.2.2.2 Online Compensation of VSI Non-linearity -- 2.2.3 Influences of VSI Non-linearity on Parameter Estimation -- 2.3 Ill-Conditioned Problem -- 2.4 Summary -- References -- Chapter 3: Online Estimation of Rotor Flux Linkage with the Aid of Thermocouples in Stator Windings -- 3.1 Introduction -- 3.2 Online Estimation of Rotor Flux Linkage with the Aid of Thermocouples in Stator Windings -- 3.2.1 Online Estimation of Rotor Flux Linkage -- 3.2.2 Thermal Condition Monitoring of Rotor PM -- 3.3 Summary -- References -- Chapter 4: Online Parameter Estimation Based on Current Injections -- 4.1 Introduction.
4.2 Multi-parameter Estimation Based on Current Injection and Error Analysis -- 4.2.1 Designed Parameter Estimation Scheme -- 4.2.2 Error Analysis -- 4.2.3 Experimental Results -- 4.3 Winding Resistance and Rotor Flux Linkage Estimation Based on Current Injection under Constant Torque/Speed Control -- 4.3.1 Designed Parameter Estimation Scheme -- 4.3.2 Error Analysis and Experimental Validation -- 4.4 Summary -- References -- Chapter 5: Online Parameter Estimation Based on Position Offset Injection -- 5.1 Introduction -- 5.2 Phasor Analysis of Rotor Position Offset in PMSMs -- 5.3 Position Offset-based Estimation with id = 0 Under Constant Torque/Speed Control -- 5.3.1 Designed Estimation Method -- 5.3.1.1 Estimation of Rotor PM Flux Linkage pm and Stator Winding Resistance Rs -- 5.3.1.2 Estimation of q-axis Inductance Lq -- 5.3.1.3 Estimation of d-axis Inductance Ld -- 5.3.2 Experimental and FEA Results -- 5.3.2.1 Experimental Results of Estimated pm and Rs -- 5.3.2.2 Experimental Results of Estimated Ld and Lq -- 5.4 Position Offset-based Estimation with id = 0 Under Variable Speed Control -- 5.4.1 Designed Estimation Method -- 5.4.2 Experimental and FEA Results -- 5.5 Position Offset-based Estimation with id ≠ 0 Under Constant Torque/Speed Control -- 5.5.1 Designed Estimation Method -- 5.5.1.1 Estimation of Rotor PM Flux Linkage pm and Inductances' Saliency Δ -- 5.5.1.2 Estimation of dq-axis Inductances -- 5.5.2 Experimental and FEA Results -- 5.6 Position Offset-based Estimation with id = 0 and id ≠ 0 Under Constant and Variable Speed Control -- 5.6.1 Designed Estimation Method -- 5.6.2 Experimental and FEA Results -- 5.7 Analysis of Amplitude of Position Offset Injection -- 5.8 Summary -- References -- Chapter 6: Online Parameter Estimation Under Variable Speed Control -- 6.1 Introduction. 6.2 Estimation of Stator Resistance, Inductances, and Rotor PM Flux Linkage -- 6.2.1 Identifiability Analysis and Influence of VSI Non-linearity -- 6.2.2 Improved Estimation Scheme -- 6.2.3 Experimental Results -- 6.3 Estimation of dq-axis Flux Linkage Maps with Uncertainties of Circuit Resistance and Inverter Non-linearity -- 6.3.1 Modelling of Cost Functions for Identification of Flux Linkages -- 6.3.2 Minimization of Cost Functions -- 6.3.3 Experimental Results -- 6.3.3.1 Data Recording and FE-predicted Flux Linkage Maps -- 6.3.3.2 Identification of dq-axis Flux Linkage Maps -- 6.3.3.3 Influence of Uncertain Circuit Resistance -- 6.3.3.4 Derivation of dq-axis Inductances -- 6.3.3.5 MTPA Current Trajectory Based on dq-axis Flux Linkage Maps -- 6.4 Summary -- References -- Chapter 7: Estimation of Magnetic Saturation and Cross-coupling Based on High-frequency Signal Injection -- 7.1 Introduction -- 7.2 Magnetic Saturation Modelling and Time Delay Effect in HF Signal Injection -- 7.2.1 Fundamental Mathematical Model -- 7.2.2 Time Delay Effect in HF Signal Injection Methods -- 7.3 HF Rotating Voltage Injection Method -- 7.4 HF Pulsating Voltage Injection Method -- 7.4.1 With the Aid of Position Estimator -- 7.4.2 Without the Aid of Position Estimator -- 7.5 Combined HF Rotating and Pulsating Voltage Injection Method -- 7.6 Experimental Results -- 7.6.1 Evaluation of Estimation Performance -- 7.6.2 Comparison with FE Results -- 7.6.3 Selection of Injected Voltage -- 7.7 Summary -- References -- Chapter 8: Offline and Multi-step Parameter Estimation Methods -- 8.1 Introduction -- 8.2 Parameter Estimation at Standstill by Square Voltage Injection -- 8.3 Parameter Estimation at Standstill by HF Current Injection -- 8.3.1 Estimation Based on Current Variations -- 8.3.2 Estimation Based on Zero-crossing Detection -- 8.4 Multi-step Parameter Estimation. 8.4.1 Two-step Estimation Method -- 8.4.2 Three-step Estimation Method -- 8.5 Summary -- References -- Chapter 9: Estimation of Mechanical Parameters -- 9.1 Introduction -- 9.2 Mechanical Parameter Estimation Methods -- 9.2.1 Acceleration/Deceleration-Based Method -- 9.2.2 MRAS Observer-Based Method -- 9.2.3 Fundamental Motion Equation-Based Estimation Method -- 9.2.4 Critical Issue of Torque Prediction -- 9.3 Experimental Results -- 9.3.1 Comparison Between Schemes I and III -- 9.3.2 Comparison Between Schemes II and III -- 9.3.3 Influence of Variation in Rotor PM Flux Linkage -- 9.3.4 Sensitivity Analysis of Sinusoidal Perturbation Signal -- 9.4 Design of PI Speed Regulator -- 9.5 Summary -- References -- Chapter 10: Modern Control and Optimization Theory-Based Parameter Estimation Algorithms -- 10.1 Introduction -- 10.2 Designed Parameter Estimation Scheme -- 10.3 Recursive Least-Squares -- 10.3.1 Basic Principle -- 10.3.2 Application to Parameter Estimation for PMSMs -- 10.4 Kalman Filter -- 10.4.1 Basic Principle -- 10.4.1.1 Conventional Kalman Filter -- 10.4.1.2 Extended Kalman Filters -- 10.4.2 Application to Parameter Estimation for PMSMs -- 10.5 Model Reference Adaptive System -- 10.5.1 Basic Principle -- 10.5.2 Application to Parameter Estimation for PMSMs -- 10.6 Adaline Neural Network -- 10.6.1 Basic Principle -- 10.6.2 Application to Parameter Estimation for PMSMs -- 10.7 Gradient-Based Methods -- 10.7.1 Basic Principle -- 10.7.1.1 Steepest Descent Method -- 10.7.1.2 Newton's Method -- 10.7.1.3 Gauss-Newton Method -- 10.7.2 Application to Parameter Estimation for PMSMs -- 10.8 Particle Swarm Optimization -- 10.8.1 Basic Principle -- 10.8.2 Application to Parameter Estimation for PMSMs -- 10.9 Genetic Algorithm -- 10.9.1 Basic Principle -- 10.9.2 Application to Parameter Estimation for PMSMs -- 10.10 Summary -- References. Chapter 11: Applications of Parameter Estimation -- 11.1 Introduction -- 11.2 Improvement in Control Performance -- 11.2.1 Design of PI Regulators for FOC -- 11.2.1.1 Parameter-Based PI Regulator Design -- 11.2.1.2 Parameter Estimation -- 11.2.1.3 Designed PI Regulators and Experimental Performance -- 11.2.2 Determination of MTPA Current Trajectory -- 11.3 Improvement in Sensorless Control -- 11.3.1 Improvement in Sensorless Control Performance -- 11.3.1.1 Extended Back-EMF-Based Method -- 11.3.1.2 High-frequency Signal Injection-Based Method -- 11.3.2 Application of Parameter Estimation Under Sensorless Control -- 11.3.2.1 Position-offset-Based Online Parameter Estimation Under Sensorless Control -- 11.3.2.2 Experimental Results -- 11.4 Precise Torque Estimation -- 11.4.1 HF Square Wave Voltage Injection Considering Cross-coupling Effect -- 11.4.2 Torque Estimation Based on Estimated HF Inductances -- 11.5 Thermal Condition Monitoring -- 11.6 Fault Diagnosis -- 11.6.1 Inter-turn Short-circuit Fault -- 11.6.2 Demagnetization Fault -- 11.7 Summary -- References -- Appendix A: Finite Element Calculation of Winding Inductances -- Appendix B: Specifications of Prototype Machines and Experimental Platforms -- Index -- EULA. |
| Record Nr. | UNINA-9911022472203321 |
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Zhu Zi Qiang
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| Newark : , : John Wiley & Sons, Incorporated, , 2025 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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