Multilevel Inverters

دانلود کتاب Multilevel Inverters: Control Methods and Advanced Power Electronic Applications

Multilevel Inverters: Control Methods and Power Electronics Applications provides a suite of powerful control methods for conventional and emerging inverter topologies instrumentalized in power electronics applications. It introduces readers to the conventional pulse width modulation control of multilevel voltage source inverter topologies before moving through more advanced approaches including hysteresis control, proportional resonance control, and model predictive control. Later chapters survey the power electronics connection between device topologies and control methods, particularly focusing on conversion in renewable energy systems, electric vehicles, static VAR compensators and solid-state transformers.

Table of contents :

Front Matter
Copyright
Contributors
Preface
Pulse width modulation and control methods for multilevel inverters
Introduction
Modulation theory
Pulse modulation methods
PWM role in power electronics
PWM methods for multilevel inverters
Sinusoidal PWM
Selective harmonic elimination PWM (SHE-PWM)
Space vector PWM (SVM-PWM)
Third harmonic injection PWM (THI-PWM)
PLL control methods used in multilevel inverters
Synchronous reference frame (SRF) PLL
αβ PLL
Double synchronous reference frame (DSRF) PLL
Sinusoidal signal integrator (SSI) PLL
Dual second-order generalized integrator (DSOGI) PLL
Enhanced PLL
Control structures for grid-connected inverters
Synchronous reference frame control
Stationary reference frame control
Natural frame control
References
Hysteresis control methods
Introduction
MB hysteresis current control
MOB hysteresis current control
TB hysteresis current control
MB hysteresis voltage control
Hysteresis voltage regulation
Adaptive band low-frequency hysteresis voltage control (AB-LF-HVC)
Description of the studied inverter
Design example
Fundamentals of AB-LF-HVC
Adaptive hysteresis control implementation
Simulated results
Comparison and discussion
Conclusions
References
Proportional resonance control and applications
Introduction
Challenges in inverter systems control
Literature review
Problem statement and description
Problem formulation
System modeling
Effect of parameter variations on system performance
Frequency response of the system
Proposed multifrequency proportional resonant controller
State feedback control
Resonant controller
Polytopic model for uncertain systems
Stability according to Lyapunov
Pole clustering regions
Generalized Lyapunov theorem
H optimization
Controller synthesis with robust D-stability-based LMI approach
Control design algorithm
Results and discussion
Simulation results
Bessel polynomials
Robust control
Stability analysis for parametric variations
Bessel polynomials
Robust control
Conclusion
References
Model predictive control of multilevel diode-clamped converters
Introduction
Power circuit of multilevel diode-clamped converters
Mathematical modeling
Modeling of the converter output currents
Modeling of the DC capacitor voltages
Modeling of the common-mode voltage
Predictive current control scheme
Reference currents calculation
Extrapolation of reference currents
Predictive model
Cost function minimization
Selection of weighting factors
Selection of prediction horizon (h)
Control algorithm
Simulation results
Steady-state analysis
Transient analysis
Robustness against dc-link perturbations
Switching frequency reduction
Common-mode voltage minimization
Conclusion
References
Model predictive control of modular multilevel converters
Introduction
Power circuit of modular multilevel converter
Converter and submodule configuration
Control objectives
Mathematical modeling of an MMC
Model of DC-link current
Model of output current
Model of circulating current
Model of submodule capacitor voltage
Model of arm voltage
Model predictive control of an MMC
Challenges and issues
Methodologies
Direct model predictive control
Control algorithm
Results and analysis
Indirect model predictive control
Control algorithm
Voltage balancing strategy
Results and analysis
Conclusions
References
Multilevel converters for renewable energy systems
Introduction
Overview of multilevel converters for renewable energy
Back-to-back connected multilevel converters for wind energy
BTB neutral-point clamped converter
BTB active neutral-point clamped converter
BTB flying capacitor converter
BTB double-star four-level converter
BTB modular multilevel converter
BTB current source converter
Passive generator-side multilevel converters for wind energy
Vienna rectifier and NPC inverter
MV diode rectifier, 3L boost converter, and NPC inverter
MV diode rectifier, Buck converter, and current source inverter
Multiphase generator-side multilevel converters for wind energy
Cascaded BTB converters with six-phase PMSG
Cascaded PGS converters with six-phase PMSG
Cascaded converters with multiphase PMSG
Direct AC-AC multilevel converters for wind energy
Central multilevel inverters for photovoltaic energy
Neutral-point clamped inverter
T-type inverter
Current source inverter
String multilevel inverters for photovoltaic energy
Multistring multilevel inverters for photovoltaic energy
Conclusion
References
Multilevel inverter applications for electric vehicle drives
Introduction
Multilevel inverter topologies for EVs
Cascaded H-bridge multilevel inverter
Neutral point clamped inverter
Active neutral point clamped (ANPC) inverter
T-type NPC inverter
Multilevel inverter control systems for EVs
Field-oriented control
Direct torque control
Model predictive control
Sliding mode control (SMC)
References
STATCOM and DSTATCOM with modular multilevel converters
Introduction
Basic principle of operation
STATCOM DC side capacitor
Multilevel converter topologies
Modular multilevel converter
Basic switching control techniques
SM voltage equalization
Circulating current compensation
DC capacitor design
Arm filter design
Mathematical modeling and control of the MMC-STATCOM
Current control
Positive- and negative-sequence detectors
The positive- and negative-sequence current control
The generation of quadrature signals for the zero-sequence
The zero-sequence current control
The DC terminal voltage control
Applications of STATCOM in modern electric networks
PCC voltage compensation
Control of the PCC positive-sequence voltage
Control of the PCC negative-sequence voltage
Zero-sequence voltage compensation
Simulation of the PCC voltage compensation using the MMC-STATCOM
Case 1
Case 2
Case 3
Practical issues
Consumer imbalance assessment methodology
STATCOM energization scheme
Appendix
References
Solid state transformers with multilevel inverters
Introduction
Architecture of SSTs
Isolation configurations of SSTs
Multilevel inverter configurations used in SSTs
Conclusions
References
Index

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