Cascaded Multilevel Inverter Employing Three-Phase Transformers and Single DC Input

Song, Sung Geun; Kang, Feel Soon; Park, Sung-Jun

doi:10.1109/tie.2009.2013846

Cited by 144 publications

(22 citation statements)

References 33 publications

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“…This configuration use single DC input and require additional single and three phase transformers for higher voltage level. In accordance with the observation from the references [5]- [7], inverter topology requires more DC input, transformers and switches which result in increased complexity, system size and cost. For maintain grid current as pure sinusodial Proportional-Integral (PI) controller and FLC controllers are used as feedback controller.…”

Section: Introductionsupporting

confidence: 55%

“…Table 1 shows THD profile of exiting work. [20] 2013 Three Phase 5Levels SVPWM 9.0% Table 2 shows the comparison of a number of power devices used in the proposed approach with two existing approaches inferred in [5] and [7]. In the proposed work the numbers of switches are reduced to fifteen when compared to 24 in [5,7].…”

Section: Performance Analysis Of Pi and Fuzzy Logic Controllermentioning

confidence: 99%

“…In addition the DC source used in the input is reduced to one whereas it is 6 in [5]. Similarly three transformers were used in [7] whereas in the proposed work only one transformer is used. Usage of lesser components results in reduced cost and reduced complexity of the system.…”

Section: Performance Analysis Of Pi and Fuzzy Logic Controllermentioning

confidence: 99%

“…The above topology, each H bridge require separate DC sources with equal rating and separate DC sources make it system bulky and costlier [6]. Cascade H bridge inverter employing single phase and three phase transformers with single DC input is also presented [7]. This configuration use single DC input and require additional single and three phase transformers for higher voltage level.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparative Study of Three Phase Grid Connected Photovoltaic Inverter Using PI and Fuzzy Logic Controller with Switching Losses Calculation

Venkatesan¹,

Rajeshwari²,

Deverajan³

et al. 2016

IJPEDS

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A comparative study of three phase grid connected photovoltaic (PV) inverter using Proportional-Integral (PI) controller and Fuzzy logic controller (FLC) is presented in this paper. Proposed three phase inverter with single DC source employing three phase transformer for grid connected PV system controlled by using space vector pulse width modulation (SVPWM) technique. PI and FLC are used as current controller for regulating the current. Perturb and observe maximum power point technique (MPPT) is used for tracking of maximum power from the PV panel. Finally total harmonic distortion (THD) comparison made between two controllers for validation of results. Furthermore swithing losses of inverter are also presented. The simulation results are obtained using MATLAB simulink. Keyword:Fuzzy INTRODUCTIONIn the modern scientific world ruled by science, the utilizing of electricity has increased rapidly due to growing of population of the world. Nowadays, most of the research works have focused on PV based power generation due to major reasons such as price of fossil fuel, green house effect and energy available in nature [1]. Actually, solar panel is directly converting solar irradiation in to electrical energy [2]. It is necessary to convert available DC voltage into AC voltage and the converted AC voltage should be sinusoidal with high quality output voltage. For this purpose, multilevel inverter (MLI) is the most suitable choice for converting DC into AC compared to the conventional two level inverters with minimum THD values. MLI's broadly categorised into three main types namely, diode clamped, flying capacitor and cascade [3]- [4]. Three phase MLI inverter using cascaded H-Bridge with independent DC source is presented in the literature review [5]. The above topology, each H bridge require separate DC sources with equal rating and separate DC sources make it system bulky and costlier [6]. Cascade H bridge inverter employing single phase and three phase transformers with single DC input is also presented [7]. This configuration use single DC input and require additional single and three phase transformers for higher voltage level. In accordance with the observation from the references [5]- [7], inverter topology requires more DC input, transformers and switches which result in increased complexity, system size and cost. For maintain grid current as pure sinusodial Proportional-Integral (PI) controller and FLC controllers are used as feedback controller. The PI is maynot satisfactory in controlling various non linear control applications. Moreover the design of its control system is

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Section: Introductionsupporting

confidence: 55%

Section: Performance Analysis Of Pi and Fuzzy Logic Controllermentioning

confidence: 99%

Section: Performance Analysis Of Pi and Fuzzy Logic Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative Study of Three Phase Grid Connected Photovoltaic Inverter Using PI and Fuzzy Logic Controller with Switching Losses Calculation

Venkatesan¹,

Rajeshwari²,

Deverajan³

et al. 2016

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Several asymmetrical topologies have been brought out along with a requirement for high frequency switching devices and ability to withstand overall voltage, which restricts their use for high voltage applications [15][16][17][18][19][20]. A topology based on series parallel connection of dc sources to produce higher number of levels has not been in surface due to the different rating of power components and its associated increase in the overall cost [15].…”

Section: Introductionmentioning

confidence: 99%

A New Cascaded Multilevel Inverter Topology with Voltage Sources Arranged in Matrix Structure

Thamizharasan¹,

Baskaran²,

Ramkumar³

2015

Journal of Electrical Engineering and Technology

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-The paper unleashes a new idea to arrive at reduced switch count topological structures configured in the form of a matrix for a cascaded Multi level inverter (CMLI). The theory encircles to minimize the number of switches involved in the conduction path and there from acclaim reduced input current distortion, lower switching losses and electromagnetic interference. The focus extends to standardize the number of power devices required for reaching different levels of output voltage from the same architecture. It includes appropriate pulse width modulation (PWM) strategy to generate firing pulses and ensure the desired operation of the power modules. The investigative study carries with it MATLAB based simulation and experimental results obtained using suitable prototypes to illustrate the viability of the proposed concept. The promising nature of the performance projects a new dimension in the use of single phase MLIs for renewable energy related applications.

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Design and analysis of novel optimal harmonic elimination strategy based on MOPSO to obliterate low‐order harmonics of odd‐nary cascaded transformers‐based multilevel inverter

Falehi

Rafiee

2018

Math Methods in App Sciences

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Creating a high‐step staircase sinusoidal voltage taking into account of low number of switches is recognized as a significant challenge ahead of inventors of power electronics. This paper suggests a maiden cascaded transformer‐based multilevel inverter to effectively develop and solve the abovementioned challenge. Hence, via appending the bidirectional switches to the capacitors of submultilevel inverter as well as low‐frequency transformers, the proposed inverter structure can flexibly operate as so‐called “odd‐nary asymmetrical multilevel inverter.” From the perspective of low‐order harmonics produced by all inverter structures, apart from inverter type, it is essential that an effective strategy to be implemented to eliminate these harmonics. Toward this subject, kerf‐style Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) has been scheduled as an optimization problem. Because of nature of multiobjective state of the problem, application of the multiobjective optimization technique is inevitable. Considering significant performance of Multi Objective Particle Swarm Optimization (MOPSO) for solving the nonlinear objectives, the elimination of fifth, seventh, and 11th harmonics is formulated by relevant fitness functions based on MOPSO. Putting it all together, the relevant analytical study accompanying both the simulation and experimental results has transparently verified the performance of the proposed multilevel inverter. Furthermore, elimination of all three designated low‐order harmonics, ie, fifth, seventh, and 11th harmonics using MOPSO‐based kerf‐style SHEPWM strategy has been well confirmed.

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Cascaded Multilevel Inverter Employing Three-Phase Transformers and Single DC Input

Cited by 144 publications

References 33 publications

Comparative Study of Three Phase Grid Connected Photovoltaic Inverter Using PI and Fuzzy Logic Controller with Switching Losses Calculation

Comparative Study of Three Phase Grid Connected Photovoltaic Inverter Using PI and Fuzzy Logic Controller with Switching Losses Calculation

A New Cascaded Multilevel Inverter Topology with Voltage Sources Arranged in Matrix Structure

Design and analysis of novel optimal harmonic elimination strategy based on MOPSO to obliterate low‐order harmonics of odd‐nary cascaded transformers‐based multilevel inverter

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