دانلود کتاب m-Mode SVPWM Technique for Power Converters

In traditional SVPWM, all operating modes or voltage space vectors of the inverter
need participate in modulation, which results in a large amount of calculation in the
digital processor and the corresponding computational complexity. It is well known
that reducing the number of voltage space vectors is a potential methodology to
simplify the calculation of SVPWM.
Since 2001, the authors have studied the modulation characteristics of power
electronic converters to solve the computational complexity problem of SVPWM.
In terms of the system state controllability, it is found that not all voltage space
vectors are required for the SVPWM process, when the inverter is regarded as a
switched linear system. Further, some redundant voltage space vectors can be
ignored to reduce the computational complexity of SVPWM and achieve the
desired control output. Based on the above results, the rotating voltage space vector
can be synthesized by fewer voltage space vectors, and a novel and simpler
SVPWM can be obtained. In fact, any rotating voltage space vector has a variety of
synthesis methods on the basis of the space vector graph of SVPWM, when the
angle between two voltage space vectors forming the rotating voltage space vector
is less than 180°, so it is possible to choose the modulation method having fewer
voltage space vectors to realize SVPWM. The drawn conclusion of the system state
controllability analysis in geometry can be confirmed.
Therefore, in view of the system state controllability, the authors do propose the
mechanism and criterion of m-mode SVPWM, and develop the corresponding
strategies applied for two-level inverters, dual-output inverters, multiphase inverters,
three-level inverters, modular multilevel inverters, and PWM rectifiers.
Theoretical and experimental results validate that m-mode SVPWM has simpler
calculation, lower switching frequency, and higher efficiency than the existing
SVPWM. The m-mode SVPWM, we concluded, is an innovative one.
This book consists of four parts. According to the switched linear system theory,
the first part reveals the state controllability of power electronic converters and puts
forward the corresponding m-mode state controllability criteria and the m-mode
SVPWM mechanism. Based on the above theory, the m-mode SVPWM strategies
of the three-phase four-wire inverter, nine-switch dual-output inverter, five-leg
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dual-output inverter, and three-phase three-level inverter are proposed in the second
part in detail, and the proposed SVPWMs are compared with the traditional ones to
verify their superiorities. By reducing the number of inverter operating modes, the
following part exhibits the application of m-mode state controllability to the
complex modular multilevel inverter to simplify the PWM strategy. The m-mode
SVPWM mechanism, in the last part, is popularized and applied to the PWM
rectifier.
And, withal, an inspiration is given from this book: multi-interdisciplinary
research can achieve novel outcomes. For example, considering power electronic
converter only from the circuit theory, the factors that promote the development of
power electronic technology show less vitality. Switched linear system theory,
however, draws new elicitation for the study of power electronic converters. It is
even possible to achieve further discoveries, tap the potentials, and take full
advantage of the new characteristics of power electronic converters. Therefore, it is
interdisciplinary that enlightens the future direction in research of power electronics
technology.