TITLE

Selective harmonic mitigation-pulse-width modulation technique with variable DC-link voltages in single and three-phase cascaded H-bridge inverters

AUTHOR(S)
Moeini, Amirhossein; Iman-Eini, Hossein; Bakhshizadeh, Mohamadkazem
PUB. DATE
April 2014
SOURCE
IET Power Electronics;Apr2014, Vol. 7 Issue 4, p924
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
There are different modulation techniques that can be used in medium-voltage and high-power electronic converters, but a few of them provide high efficiency and satisfy power quality requirements. This study presents a modified selective harmonic mitigation pulse-width modulation (SHM-PWM) technique which employs variable DC-link voltages as a degree of freedom in cascaded H-bridge (CHB) inverters. This degree of freedom increases the range of acceptable modulation indices, reduces the number of switching transitions and increases the number of harmonics that can be removed in selective harmonic elimination (SHE) (or SHM) techniques. Hence, in addition to efficiency improvement, a huge number of harmonics can be mitigated in AC side of the converter. Using this approach, triplen harmonics can be restricted to standard limits, in singlephase inverters. In addition, the proposed SHM-PWM approach employs the least number of switching transitions in a fundamental period to limit the specific number of harmonics compared to the alternative SHE or SHM techniques. In this study, the requirements of two well-known grid codes EN 50160 and CIGRE WG 36-05 are well satisfied and the validity of proposed method is verified by several simulations and experiments on a seven-level CHB inverter in single-phase and threephase operating modes.
ACCESSION #
95909588

 

Related Articles

  • Vector-optimised harmonic elimination for single-phase pulse-width modulation inverters/converters. Hadji, S.; Touhami, O.; Goodman, C.J. // IET Electric Power Applications;May2007, Vol. 1 Issue 3, p423 

    A new approach for calculating single-phase inverters/converters-optimised pulse-width modulation (PWM) switching angles for harmonic and voltage control is proposed. This approach takes into account the DC-link voltage ripple, due to the finite DC-link capacitance, in the optimised...

  • Predictive modulation schemes to reduce common-mode voltage in three-phase inverters-fed AC drive systems. Hoseini, Seyed Kazem; Adabi, Jafar; Sheikholeslami, Abdolreza // IET Power Electronics;Apr2014, Vol. 7 Issue 4, p840 

    Pulse width modulation controlled inverters produce common-mode voltage, which has been reported to cause many system drawbacks. This voltage along with high dv/dt raises leakage currents which can result in serious problems such as motor damage and electromagnetic interference to the...

  • Single-phase multilevel inverter based on switched-capacitor structure. Bac-Bien Ngo; Minh-Khai Nguyen; Jae-Hong Kim; Firuz Zare // IET Power Electronics;2018, Vol. 11 Issue 11, p1 

    This study proposes a new topology for multilevel inverters based on switched-capacitor structure. The proposed topology uses capacitor charged/discharged characteristic to boost the output voltage without employing magnetic elements. The proposed circuit configuration has fewer components,...

  • Theoretical harmonic analysis of cascaded H-bridge inverter under hybrid pulse width multilevel modulation. Jiaomin Liu; Yuwei Sun; Yonggang Li; Chao Fu // IET Power Electronics;2016, Vol. 9 Issue 14, p2714 

    This study investigates the analytical approach for determining the spectral components of a hybrid pulse width modulation (HPWM) strategy for cascaded H-bridge (CHB) multilevel inverters. By decomposing the HPWM voltage into a staircase waveform and a non-sinusoidal pulse width modulation...

  • Dynamic voltage restorer based on multilevel inverter with adjustable dc-link voltage. Babaei, Ebrahim; Kangarlu, Mohammad Farhadi; Sabahi, Mehran // IET Power Electronics;Mar2014, Vol. 7 Issue 3, p576 

    Dynamic voltage restorer (DVR) is a power electronic converter-based custom power device used to compensate for voltage variations. The inverter used in the DVR structure can have different topologies. Multilevel inverters are a good candidate to be used in the DVR structure especially in higher...

  • Space vector pulse-width modulation scheme for multilevel voltage inverters with duty cycle calculation based on relative vector distances. Ovalle, Andres; Ramos, Gustavo // IET Power Electronics;Apr2014, Vol. 7 Issue 4, p829 

    In this study, a control scheme for multilevel inverters is formulated employing space vector pulse-width modulation. The notable formulation bases the duty cycle calculation on relative distances among constructive vectors provided by the lineneutral voltage levels of the converter topology....

  • Neuro-Fuzzy Five-level Cascaded Multilevel Inverter for Active Power Filter. Rao, G. Nageswara; Sekhar, K. Chandra; Raju, P. Sangameswara // International Journal on Electrical & Power Engineering;Feb2012, Vol. 3 Issue 1, p49 

    This paper presents an investigation of five-Level Cascaded H-bridge(CHB) inverter as Active Power Filter in Power System (PS) for compensation of reactive power and harmonics. The advantages of CHB inverter are low harmonic distortion, reduced number of switches and suppression of switching...

  • True Six-Phase Space Vector Modulation Scheme with Reduced Low Order Harmonics. Lipinskis, T.; Baskys, A.; Bleizgys, V.; Platakis, A. // Electronics & Electrical Engineering;2014, Vol. 20 Issue 9, p46 

    A novel space vector pulse width modulation (PWM) scheme based on the employment of medium magnitude space vectors for six-phase voltage source inverter has been developed. The proposed PWM scheme allows generating the six-phase voltage with the reduced level of low order harmonics. It is...

  • Simulation and Analysis of PI and NN Tuned PI Controllers for Transformer Based Three-Phase Multi-level Inverter with MC-PWM Techniques. Dasari, Manikana Swamy; Mani, Venkatesan // Journal Européen des Systèmes Automatisés;Dec2019, Vol. 52 Issue 6, p587 

    The proposed work mainly deals with transformer-based three-phase Multi-Level Inverter (MLI) where the switches in MLI are controlled by Multi-Carrier PWM (MC-PWM) techniques. In this article, 48V DC input voltage is fed to 48/400V High-Voltage DC-DC boost converter which is controlled by...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics