A new PWM inverter for photovoltaic power generation system

Hinga, Peterson K.; Ohnishi, Tokuo; Suzuki, Takayuki

doi:10.1109/pesc.1994.349704

Cited by 47 publications

(12 citation statements)

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“…As a solution for this requirement, a new family of the inverter has emerged and known as the multilevel inverter [7]. Multilevel Inverter (MLI) technology assures some advantages comparably to the conventional technology and deals with higher power applications which make it much easier to deal with lower power applications such as the PV systems [8][9][10][11][12][13][14][15][16][17][18][19]. One of the main advantages of the MLI structure is the improvement of the output voltage waveform by approaching the sinusoidal waveform which implicates reducing the harmonic stress [20].…”

Section: Introductionmentioning

confidence: 99%

Modulation Index Variation Effect on Harmonic Behavior of Fifteen Multilevel Inverter Neutral-Point-Clamped Topology

Benioub

Kadri

Adnane

et al. 2017

IJECE

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The Market for photovoltaic cells (PV) has grown fast due to a higher demand on PV applications. However, there are still the transport and connection problems of the PV systems to the grid because of the difference in the current form. To assure the adequate connection between the PV sources and the network, the conversion of direct current (DC) to an alternative current (AC) is required and provided by an electronic device known as the inverter. In this last years, the conventional inverter structure reached its limits in power level and conversion performance. The multilevel inverter (MLI) structure was introduced and widely used in high power and high voltage applications to solve the conventional inverter limitation problem. In this paper, the Neutral-Point-Clamped (NPC) topology of the MLI was simulated to evaluate the effect of modulation index variation of the control technique on the harmonic behavior of the fifteen-level NPC. The simulation results were useful for the optimization of the MLI control technique toward the decrease of the harmonic (THD) effect on the NPC MLI. Keyword:Multilevel INTRODUCTIONPhotovoltaic (PV) systems world market know a fast growth during the last year due to the necessity of developing the renewable energy to replace the fossil fuels [1]. However, this rapid growth required in parallel the improvement of the PV chain efficiency such as the PV generator energy yielding, the electrical power transport performance and the adequate connection to the grid [2]. One of the important parts of the conversion chain devices is the inverter which allows the conversion of DC signal to AC signal in purpose to permit the distribution and connection of the output electrical energy of the PV generator to the network [3]. In addition to PV conversion chain, inverters are used in power system applications and uninterrupted power supplies industries [4]. The inverters power efficiency to feed the different type of loads of the grid reach the max level and it is due to the increase of inductive load usage. More inductive loads mean more harmonics and less conversion efficiency [5]. Improvement of the output power quality of the inverter required reducing its total harmonic distortion (THD) content and decrease the size of the filter used [6]. As a solution for this requirement, a new family of the inverter has emerged and known as the multilevel inverter [7]. Multilevel Inverter (MLI) technology assures some advantages comparably to the conventional technology and deals with higher power applications which make it much easier to deal with lower power applications such as the PV systems [8][9][10][11][12][13][14][15][16][17][18][19]. One of the main advantages of the MLI structure is the improvement of the output voltage waveform by approaching the sinusoidal waveform which implicates reducing the harmonic stress

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Section: Introductionmentioning

confidence: 99%

Modulation Index Variation Effect on Harmonic Behavior of Fifteen Multilevel Inverter Neutral-Point-Clamped Topology

Benioub

Kadri

Adnane

et al. 2017

IJECE

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“…The three-level inverter can satisfy specifications through its very high switching, but it could also unfortunately increase switching losses, acoustic noise, and level of interference to other equipment. Improving its output waveform reduces its harmonic content and, hence, also the size of the filter used and the level of electromagnetic interference (EMI) generated by the inverter's switching operation [3].…”

Section: Introductionmentioning

confidence: 99%

“…Multilevel inverters are promising; they have nearly sinusoidal output-voltage waveforms, output current with better harmonic profile, less stressing of electronic components owing to decreased voltages, switching losses that are lower than those of conventional two-level inverters, a smaller filter size, and lower EMI, all of which make them cheaper, lighter, and more compact [3], [4]. Various topologies for multilevel inverters have been proposed over the years.…”

Section: Introductionmentioning

confidence: 99%

Modified multilevel inverter topology with reduced switch count and a novel PWM control scheme

Balakrishnan

Indiradevi

2014

2014 International Conference on Computer Communication and Informatics

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Abstract-Multilevel converters offer high power capability, associated with lower output harmonics and lower commutation losses. Their main disadvantage is their complexity, requiring a great number of power devices and passive components, and a rather complex control circuitry. This paper proposes a singlephase seven-level inverter for grid connected PV systems, with a novel pulse width-modulated (PWM) control scheme. Three reference signals that are identical to each other with an offset that is equivalent to the amplitude of the triangular carrier signal were used to generate the PWM signals. The inverter is capable of producing seven levels of output-voltage levels from the dc supply voltage. This paper proposes a new multilevel inverter topology using an H-bridge output stage with two bidirectional auxiliary switches. The new topology produces a significant reduction in the number of power devices and capacitors required to implement a multilevel output using the Asymmetric Cascade configuration.Index Terms-Asymmetric cascade configuration, H-Bridge, multilevel inverter, pulse width Modulation.

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“…Aquila et al [6] presented a digital implementation of DCMLI employing a fast microprocessor and logic circuits. Multilevel voltage source inverters have recently become very popular in applications using renewable energy sources such as fuel cell, photovoltaic cell and biomass etc [7]. The idea of control degrees of freedom combination and the validity of the PWM strategies are demonstrated by simulation and experimentation of three and five level inverters by Hongyan Wang et al [9].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Carrier Overlapping PWM Strategies for Five Level Diode Clamped Inverter

Shanthi¹,

Natarajan²

2011

ijeei

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Keywords: dSPACE, DCMLI, PWM, COPWM, CFD. IntroductionMultilevel inverter has drawn tremendous interest in high power applications because it has many advantages: it can realize high voltage and high power output through the use of semiconductor switches without use of transformer and without dynamic voltage balance circuits. When the number of output levels increases, harmonics of the output voltage and current as well as Electro Magnetic Interference (EMI) decrease. Behera et al [1] described the harmonic analysis of the stepped output of the three level inverter based on number of triangular carriers and a sinusoidal modulating signal. The use of multilevel approach is believed to be a promising alternative in very high power conversion processing [2,8]. Chaturvedi et al [3] presented simulation studies on different control techniques for three and five level DCMLI. The performance of each technique has been investigated based upon reduction in THD. Many investigators [4,10,13] have proposed carrier based multilevel sine triangle PWM schemes for control of a DCMLI used in a motor drive and in a static VAR compensator. Multilevel converters are rapidly emerging as viable alternatives for high power drives. A generalized circuit topology of multilevel voltage source inverter is proposed in [5]. Aquila et al [6] presented a digital implementation of DCMLI employing a fast microprocessor and logic circuits. Multilevel voltage source inverters have recently become very popular in applications using renewable energy sources such as fuel cell, photovoltaic cell and biomass etc [7]. The idea of control degrees of freedom combination and the validity of the PWM strategies are demonstrated by simulation and experimentation of three and five level inverters by Hongyan Wang et al [9]. This is based on a direct extension of three level inverter to higher level. Newton et al [11] discussed the control requirements for three and five level inverters.

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A new PWM inverter for photovoltaic power generation system

Cited by 47 publications

References 1 publication

Modulation Index Variation Effect on Harmonic Behavior of Fifteen Multilevel Inverter Neutral-Point-Clamped Topology

Modulation Index Variation Effect on Harmonic Behavior of Fifteen Multilevel Inverter Neutral-Point-Clamped Topology

Modified multilevel inverter topology with reduced switch count and a novel PWM control scheme

Comparative Study on Carrier Overlapping PWM Strategies for Five Level Diode Clamped Inverter

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