Hybrid carrier based space vector modulation for PV fed asymmetric cascaded multilevel inverter

Sujitha, N.; Krithiga, S.

doi:10.1109/icacci.2015.7275750

Cited by 3 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The survey revealed several commutation techniques applied to asymmetric multilevel topologies (see Table 5), in which it is observed that the POD-PWM and POD-PWM techniques present a significant harmonic distortion in the voltage signal of the converter [38], obtaining 14.83% and 15.2%, respectively. Furthermore, it is found that the most promising modulation techniques are Space Vector Modulation, Level-Shifted Pulse-Width Modulation, and Staircase Modulation [39][40][41] with voltage THDs of 3.71%, 3.84%, and 3.85%, respectively. These solutions were presented in an open loop, considering only the performance of the modulation in their respective topologies.…”

Section: Discussionmentioning

confidence: 99%

Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

et al. 2020

View full text Add to dashboard Cite

This article proposes a 27-level asymmetric cascade H-bridge multilevel topology for photovoltaic applications, which considers a predictive control strategy that allows minimization of the commutations of the converter. This proposal ensures a highly sinusoidal and stable photovoltaic injection when there are solar irradiance disturbances, generating a low distortion in the current waveform and low switching losses. To validate the performance of the control and the proposed topology, the dynamic model of the alternating current (AC) and direct current (DC) side system is first obtained, which is checked by computational simulations. Subsequently, the implementation of a master–slave control is carried out, focused on the control of DC voltage and AC current. The proposal is simulated, and the total harmonic distortion (THD) is obtained in the voltage and current waveforms. Undesired commutations, typical of the predictive control, are eliminated in the AC voltage waveform, and a proper DC voltage tracking is achieved for the high-power cell. In order to demonstrate the performance of the proposed control strategy, a low-power proof-of-concept prototype is implemented, in which the energy is injected to the grid, under the event of solar irradiance disturbances (with DC control).Then, the undesired switching in the main cell is eliminated, generating THDs in the voltage and current signal of 7.76% and 2.65%, respectively.

show abstract

Section: Discussionmentioning

confidence: 99%

Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The magnitude of the DC sources is selected in a predefined manner (Babaei et al , 2014; Zamiri et al , 2016). Usually, the asymmetric MLIs provide more voltage steps than the corresponding symmetric MLI (Sujitha and Krithiga, 2015). But this results in the requirement of a larger magnitude of DC voltage sources.…”

Section: Introductionmentioning

confidence: 99%

A novel cascaded transformer coupled multilevel inverter with reduced number of switches for high power applications

Behera,

Dash,

Panda

2022

WJE

View full text Add to dashboard Cite

Purpose The purpose of this paper is to design a cascaded Multilevel inverter with reduce number of switches for high power applications. This paper came up with an innovative three-phase multilevel inverter (MLI) topology, which is a cascaded structure based on classical three-legged voltage source inverter (VSI) bridges as an individual module. The prominent advantage of this topology is that it requires only one direct current (DC) link system. The main characteristic of it is that a higher number of voltage levels can be achieved with considerably a smaller number of semiconductor switches, which improves the reliability, power quality, cost and size of the system significantly. Design/methodology/approach The individual modules are cascaded through three-phase transformers to provide higher voltage at the output with the higher number of voltage levels. In this work, the phase-shifted pulse width modulation technique is implemented to verify the result. Findings The proposed topology is compared with three-phase cascaded H-bridge MLI (CHB-MLI) and a modified CHB-MLI topology and found better in many aspects. The proposed MLI can produce a higher number of voltage levels with fewer semiconductor switches and associated triggering circuitry. As the device count in the proposed MLI is less compared to other MLI discussed, it tends to have less switching and conduction loss which increases the efficiency and reliability. As the number of level increases, the voltage profile and the total harmonic distortion of the proposed MLI improves. Originality/value This is a transformer-based modular cascaded MLI, which is based on classical VSI bridges. Here in this topology, a single module provides all three phases. So, a single string of cascaded modules is enough for three-phase multilevel voltage generation.

show abstract

“…The cascaded single phase 7-level inverter as shown in Fig. 1 has ((7-1) /2 = 3) three H-Bridges with three isolated DC sources (Peng and Lai, 1997;Sujitha and Ramani, 2012). The Cascaded MLI:…”

Section: Introductionmentioning

confidence: 99%

Implementation of Cascaded H-Bridge Multilevel Inverter using MATLAB-DSP (ezDSP28335) Interfacing

Sultana¹,

Sahoo²,

Singh³

et al. 2014

RJASET

View full text Add to dashboard Cite

This study demonstrates, the generation of triggering signals using SPWM technique for a seven level H-Bridge cascaded inverter with the help of MATLAB-DSP (ezDSP 28335) interfacing without using EPWM block and presents the final output of the inverter. The focus is mainly on hardware implementation of Cascaded H-Bridge MLI using MATLAB-DSP interfacing. Generation of triggering signals using MATLAB-DSP interfacing has been explained briefly. Use of GPIO block in SIMULINK model makes the triggering signal generation easier and more efficient. The switching control signals required for triggering of switches are generated using MATLAB-DSP (ezDSP 28335) interfacing. This approach exploits the advantages of block programming in SIMULINK.

show abstract

Hybrid carrier based space vector modulation for PV fed asymmetric cascaded multilevel inverter

Cited by 3 publications

References 10 publications

Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

A novel cascaded transformer coupled multilevel inverter with reduced number of switches for high power applications

Implementation of Cascaded H-Bridge Multilevel Inverter using MATLAB-DSP (ezDSP28335) Interfacing

Contact Info

Product

Resources

About