A Flexible Selective Harmonic Mitigation Technique to Meet Grid Codes in Three-Level PWM Converters

Franquelo, Leopoldo G.; Nápoles, J.; Guisado, R.C.P.; Leon, Jose I.; Aguirre, M.A.

doi:10.1109/tie.2007.907045

Cited by 218 publications

(111 citation statements)

References 19 publications

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“…An evolution of SHE is the selective harmonic mitigation (SHM) technique, which is based on preprogrammed waveforms not eliminating the loworder harmonics but reducing the distortion below the limits imposed by a grid code [30], [31].…”

Section: Selective Harmonic Mitigation Techniquementioning

confidence: 99%

Model Predictive Control: A Review of Its Applications in Power Electronics

Vázquez

Leon

Franquelo

et al. 2014

EEE Ind. Electron. Mag.

996

374

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Section: Selective Harmonic Mitigation Techniquementioning

confidence: 99%

Model Predictive Control: A Review of Its Applications in Power Electronics

Vázquez

Leon

Franquelo

et al. 2014

EEE Ind. Electron. Mag.

996

374

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“…This modulation technique is called Selective Harmonic Mitigation (SHM) [66]. The SHM method can be used in all the applications where the SHE technique operates obtaining better results in terms of the resulting necessary filter to be used in the power system.…”

Section: Iii4b Selective Harmonic Mitigation Techniquementioning

confidence: 99%

High-Performance Motor Drives

Kaźmierkowski

Franquelo

Rodríguez³

et al. 2011

EEE Ind. Electron. Mag.

193

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Abstract--Power electronic converter-fed high performance AC drives belong to high-tech industry and are one of main factors for energy saving and productivity growth. This paper reviews present state and trends in development of key parts of controlled induction motor drive systems: converter topologies, modulation methods, as well as control and estimation techniques. Following topologies are described: Two-and Multi-level Voltage Source Converters, Current Source Converters and Direct Converters. Among the modulation techniques are briefly presented: conventional bipolar and unipolar PWM, space vector modulation (SVM) with extension for multilevel converters, harmonic control techniques, variable frequency modulation (hysteresis, nearest level, and model predictive techniques). About the control strategies, the generic torque control methods are described in two groups: linear and nonlinear controllers. In linear group are presented field oriented control (FOC), direct torque control (DTC) with voltage SVM, and DTC with flux vector modulation (DTC-FVM). The group of nonlinear control include: classical switching table based hysteresis DTC, direct self control (DSC) and predictive DTC scheme. Also, selected simple flux vector observers/estimators are discussed.

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“…Various switching strategies of multilevel inverters are categorized into high switching frequency methods such as sinusoidal pulse width modulation (SPWM) strategy [14] and low switching frequency techniques, often equal to the fundamental switching frequency of the components, which create stepwise output voltage waveform [15]. The second category comprises of three major switching strategies so-called optimized harmonic stepped waveform (OHSW) [16], selective harmonic mitigation (SHM-PWM) [17][18], and optimal minimization of the THD [19]. Selective harmonic elimination is an as efficient method to mitigate the loworder harmonic components [20].…”

Section: Introductionmentioning

confidence: 99%

Comparison Study and Simulation of the Main Multilevel Inverter Topologies for Different Output Voltage Levels

Benioub¹,

Adnane²,

Itaka³

2017

ijeei

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This paper discusses the difference between the three fundamental types of multilevel inverter (MLI) topologies, which are the neutral-point-clamped, the flying capacitors and the cascaded H-bridges. The sinusoidal pulse width modulation technique was used to simulate the output voltages and currents of the MLI inverters. The total harmonic distortion (THD) was estimated for each topology and each voltage level. Moreover, the simulation results indicate that the cascaded structure exhibited a lower THD value even when increasing the number of the output voltage. Furthermore, a new key parameter was defined as cost efficiency factor and used to compare the three topologies. Evaluation results of this factor indicate that the cascaded structure was the most advantages as it reduces stress effect on the inverter switches by eliminating the power diodes and capacitors.Keywords: Multilevel Inverter, Sinusoidal Pulse-width modulation, Cost efficiency IntroductionThe fast growth of PV power application industry requires the development of new technologies to maximize the energy yield of the PV systems [1]. This technology concerns the electrical power operation control and transfer in between the PV sources and the customers, to keep the supply of the electric power in a way to match the international standard requirement for power supply [2]. One of the weak points of the PV systems is the incapability conversion from the DC voltage to the AC voltage before connecting to the power network [3]. This conversion is performed by inverters, which are used in power system application and uninterrupted power supplies industries [4]. Improvement of the output voltage required an appropriate control of the waveform on the inverter to reduce its respective harmonic and electromagnetic effect by the diminution of switching operations and hence the filter size [5]. The limitations of the conventional inverters in the case of power or harmonic effect lead to the usage of the multilevel inverter (MLI) technology which promises some advantages over the conventional inverter especially for high power applications [6]. Three main topologies for multilevel inverter are used. The first structure is known as the neutral-point-clamped (NPC) [7], the second as the flying capacitor (FC) [8] and the third as the cascaded H-bridge with separate DC sources [9]. They are characterized by many features such as low total harmonic distortion (THD) of generated output voltage, reduced size of the filter and increased the system efficiency [10]. Thus, aspect lead the MLI topologies to find their application in PV system on the low cost and high performance [11]. New combined topology have been reported, such as three-phase MMLI, where the authors developed to reduce the components number and improve the output voltage level [12]. Moreover, the MLDCL topology which is based on cascaded H-bridge topology connected with half H-bridges cells in a series configuration in purpose to reduce the components number. However, this topology shows a hi...

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A Flexible Selective Harmonic Mitigation Technique to Meet Grid Codes in Three-Level PWM Converters

Cited by 218 publications

References 19 publications

Model Predictive Control: A Review of Its Applications in Power Electronics

Model Predictive Control: A Review of Its Applications in Power Electronics

High-Performance Motor Drives

Comparison Study and Simulation of the Main Multilevel Inverter Topologies for Different Output Voltage Levels

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