Control Strategy for Multilevel Inverter with Non-ideal DC Sources

Kühn, Harald; Ruger, N.E.; Mertens, Axel

doi:10.1109/pesc.2007.4342061

Cited by 20 publications

(10 citation statements)

References 6 publications

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“…In the binary The other progression is sine quantization. Each DC voltage in this ACMLI can be determined by equation (8), while the maximum output voltage calculate by equation (9). In this equation the voltage of sine wave reference is Vm, the frequency is f, the sequence number of H-Bridge is j and the number of HBridge is N. The process is produced by definition of quantization that is conversion of a continuous range of values into a number of discrete levels.…”

Section: Voltages Amplitude In Acmlimentioning

confidence: 99%

“…In this paper, NN use to improve ACMLI controller especially to make the controller easier to design, simpler, and better performance if compared to other control of ACMLI, as electronic circuits controller, micro-controller, Field Programmable Gate Array (FPGA), or computer program within certain language [1], [4][5], [8], [10,[13]. NN will be applied for ACMLI within binary, trinary and sine quantization of DC voltage progression.…”

Section: Introductionmentioning

confidence: 99%

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Neural Network Controller for Asymmetric Cascaded Multilevel Inverter

Sujanarko¹,

Ashari²,

Purnomo³

2010

IJCA

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Among the Artificial Intelligent (AI) technique, Neural Network (NN) is emerging technology that is advancing rapidly and having impact on many scientific and engineering applications. In this paper, NN apply on Asymmetric Cascaded Multilevel Inverter (ACMLI), in order to improve the controller easier to construct, simpler and better performance. To verify these goals, the system simulated based on Matlab Simulink after the NN controller build using m-file program. The simulation results show that the goals can realized.

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Section: Voltages Amplitude In Acmlimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Neural Network Controller for Asymmetric Cascaded Multilevel Inverter

Sujanarko¹,

Ashari²,

Purnomo³

2010

IJCA

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“…The most popular asymmetric CMLI that follow functions are binary (orde-2) and trinary (orde-3) progressions of DC voltages. Others DC progression are equal interval [6] and sine quantization [3]. To implement ACMLI in the various DC voltage progressions and various numbers of H-Bridges, the main problem is control design that consist some control parameters, especially voltage levels, firing angle and switching-state, because nothing researches reported how to determine these parameters.…”

Section: Introductionmentioning

confidence: 99%

“…Different DC voltage progression also have discussed in [3] and [6]. But in these reference and others not discussed how to determine switching-states for the voltage levels.…”

Section: Introductionmentioning

confidence: 99%

Universal Algorithm Control for Asymmetric Cascaded Multilevel Inverter

Sujanarko¹,

Ashari²,

Purnomo³

2010

IJCA

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Asymmetric Cascaded Multilevel Inverter (ACMLI) was widely studied. Various control strategies have been investigated. However, most of the reported control strategies not discussed how to determinate voltage levels, firing angle, switching-state and other parameters control design. This work was developed a universal algorithm to overcome the problems in the various number of H-Bridges and various DC voltages of ACMLI. The proposed algorithm based on combination theorem and matrix operation. The MATLAB computer program and simulation using MATLAB SIMULINK in the binary, trinary, equal interval, sine quantization and random DC voltage are the methods for verify the proposed algorithm. The results program execution and simulation in the single phase of ACMLI show that the proposed algorithm produces ACMLI control more accurate and faster if compared with previous control strategies. General TermsAlgorithms, Control, Power Electronics Keywords universal algorithm, asymmetric multilevel inverter, voltage levels, firing angle, switching-state.

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“…Some of them have discussed the potential of using unequal DC source voltages, either with a large voltage ratio, e.g. 1:3:9 or a small diversity in the range of^20 per cent (Kuhn et al, 2007). They have either considered the variations in the DC source voltages (the input capacitors' voltages) caused by load or supply or have taken different fixed voltages, but no control has been applied to regulate the DC source voltages.…”

Section: Introductionmentioning

confidence: 99%

Optimum regulation of DC sources in cascaded multi‐level inverters

Fathi

Aghdam²,

Zahedi³

et al. 2009

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to introduce a new concept in selecting the values of the DC source voltages in cascaded multi-level inverters in order to improve the output voltage THD. Design/methodology/approach -In cascaded multi-level inverters, it is usually assumed that the DC sources have the same constant voltage and output harmonics minimization is accomplished by applying proper switching angles. Employing different DC voltages with proper ratios can result in further reduction of the harmonics. After formulation of the system, i.e. describing the inverter's output voltage components in terms of the switching angles and unequal DC source voltages, a rule is applied to obtain the step heights of the staircase output waveform (DC source voltages), so that the output waveform becomes as close to the required fundamental sine wave as possible. Substituting the obtained DC source voltages into the harmonics elimination equations results in a set of equations, which are functions of switching angles only. Solving these equations leads to proper switching angles, which, regardless of the fundamental component's value, provide the specified harmonic conditions. The output voltage is then controlled by DC sources voltage regulation. Findings -Computer simulations show that employing the proposed concept results in substantial improvement in the harmonic minimization, as well as, extending the operating range of the inverter, compared to the conventional methods with equal DC source voltage multi-level inverters. Originality/value -The proposed concept according to which the ratio of the DC source voltages are determined, is original. IntroductionOwing to the limited ratings of the semiconductor switches and problems arising from their series connection, utilization of static converters in medium and high-voltage applications has been restricted for years. In recent decades, multi-level inverters have been proposed and widely utilized in various high voltage and high-power applications, such as flexible AC transmission systems (FACTS) devices, HVDC light transmission, AC drives and active filters, to overcome the aforementioned problems (Hammond

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Control Strategy for Multilevel Inverter with Non-ideal DC Sources

Cited by 20 publications

References 6 publications

Neural Network Controller for Asymmetric Cascaded Multilevel Inverter

Neural Network Controller for Asymmetric Cascaded Multilevel Inverter

Universal Algorithm Control for Asymmetric Cascaded Multilevel Inverter

Optimum regulation of DC sources in cascaded multi‐level inverters

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