<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432024000200005</article-id>
<article-id pub-id-type="doi">10.22201/fi.25940732e.2024.25.2.013</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Inversor CHB-7 con capacidad de múltiples algoritmos MPPT simultáneos en sistemas fotovoltaicos asimétricos de media tensión]]></article-title>
<article-title xml:lang="en"><![CDATA[CHB-7 inverter with capacity of multiple simultaneous MPPT algorithms in medium voltage asymmetrical photovoltaic systems]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Díaz]]></surname>
<given-names><![CDATA[Luis Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara-Cardoso]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Flores]]></surname>
<given-names><![CDATA[Concepción]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arjona-López]]></surname>
<given-names><![CDATA[Marco Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de La Laguna División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico Superior de Lerdo Departamento de Posgrado ]]></institution>
<addr-line><![CDATA[Lerdo Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de La Laguna División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Tecnológico de La Laguna División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>25</volume>
<numero>2</numero>
<fpage>0</fpage>
<lpage>0</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432024000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432024000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432024000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este artículo presenta un inversor trifásico de puentes H en cascada (CHB) de 7 niveles con capacidad de múltiples algoritmos simultáneos de seguimiento del punto de máxima potencia (MPPT) en sistemas fotovoltaicos asimétricos de media tensión sin transformador. La contribución del presente trabajo de investigación es la propuesta de una novedosa estrategia de control de balanceo basada en la modificación de la modulación de ancho de pulso desplazada en fase (PS-PWM). Esta estrategia permite superar la limitante en trabajos previos de solo poder conectar arreglos con un número igual de paneles fotovoltaicos en serie/paralelo en cada puente H, y que todos ellos solo deban operar bajo condiciones iguales de irradiancia solar. Es importante resaltar que para la implementación de estos algoritmos simultáneos MPPT no se utiliza el clásico convertidor elevador de voltaje en cada puente H, lo que representa un ahorro económico y un aumento en la eficiencia del sistema. Por otro lado, la topología CHB-7 estudiada está basada en transistores bipolares de compuerta aislada (IGBTs) comerciales de 6.5 kV, los cuales permiten la conexión directa del inversor a la red eléctrica de 13.8 kV, eliminando así la necesidad de un transformador elevador, y con ello su peso y volumen. Los resultados de simulación obtenidos en Matlab/SimPowerSystems validan el correcto y alto desempeño de los diferentes algoritmos MPPT operando al mismo tiempo con un conjunto de arreglos fotovoltaicos asimétricos teniendo una capacidad combinada de generación de 3 MW. Con el inversor CHB-7 utilizado se logró alcanzar una eficiencia total de 98 % en la potencia transferida a la red eléctrica y una muy buena calidad de la corriente de la red con tan solo 0.2 % de distorsión armónica, además de que los IGBTs operaron por debajo de 86 % de su voltaje colector-emisor máximo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This article presents a 7-level three-phase cascaded H-bridge (CHB) inverter capable of multiple and simultaneous maximum power point tracking (MPPT) algorithms in transformerless medium-voltage asymmetrical photovoltaic systems. The contribution of this research work is the proposal of a novel balancing control strategy based on the modification of the phase-shifted pulse width modulation (PS-PWM). This strategy allows to overcome the limitation in previous works of only being able to connect an array with an equal number of photovoltaic panels in series/parallel in each H bridge, and that all of them should only operate under equal conditions of solar irradiance. It is important to highlight that for the implementation of these simultaneous MPPT algorithms, the classical voltage boost converter is not used in each H bridge, which represents an economic saving and an increase in the system efficiency. On the other hand, the studied CHB-7 topology is based on commercial 6 kV IGBTs (Insulated Gate Bipolar Transistors), which allow a direct connection of the inverter to the electrical grid of 13.8 kV, thus eliminating the need of a step-up transformer, and with this its weight, volume and high-cost. The simulation results obtained in Matlab/SimPowerSystems validate the correct and high-performance of the different MPPT algorithms operating at the same time with a set of asymmetrical photovoltaic arrays having a combined generation capacity of 3 MW. With the used CHB-7 it was possible to achieve a total efficiency of 98 % in the power transferred to the electrical grid and a fairly good quality of the grid current with only 0.2 % of harmonic distortion, in addition to the IGBTs operate below 86 % of its maximum collector-emitter voltage.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Energía fotovoltaica]]></kwd>
<kwd lng="es"><![CDATA[inversor multinivel CHB]]></kwd>
<kwd lng="es"><![CDATA[arreglos fotovoltaicos asimétricos]]></kwd>
<kwd lng="es"><![CDATA[control de balanceo de voltaje]]></kwd>
<kwd lng="es"><![CDATA[PWM desplazada en fase]]></kwd>
<kwd lng="en"><![CDATA[Photovoltaic energy]]></kwd>
<kwd lng="en"><![CDATA[CHB multilevel inverter]]></kwd>
<kwd lng="en"><![CDATA[asymmetrical PV arrays sources]]></kwd>
<kwd lng="en"><![CDATA[voltage balancing control]]></kwd>
<kwd lng="en"><![CDATA[phase-shifted PWM]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Algarny]]></surname>
<given-names><![CDATA[K. S. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vilathgamuwa]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Broadmeadow]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Independent voltage oriented DC-side sensorless control of three-phase cascaded H-bridge multilevel inverter with decentralized MPPTs]]></article-title>
<source><![CDATA[2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)]]></source>
<year>2020</year>
<page-range>740-3</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Azad]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sadhu]]></surname>
<given-names><![CDATA[P. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Das]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative study between P&amp;O and incremental conduction MPPT techniques-A review]]></article-title>
<source><![CDATA[International Conference on Intelligent Engineering and Management (ICIEM)]]></source>
<year>2020</year>
<page-range>217-22</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chavarria]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Biel]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Guinjoan]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Meza]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Negroni]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Energy-balance control of PV cascaded multilevel grid-connected inverters under level-shifted and phase-shifted PWMs]]></article-title>
<source><![CDATA[IEEE Transactions on Industrial Electronics]]></source>
<year>2013</year>
<volume>60</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>98-111</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cuzmar]]></surname>
<given-names><![CDATA[R. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Pereda]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilera]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phase-shifted model predictive control to achieve power balance of CHB converters for large-scale photovoltaic integration]]></article-title>
<source><![CDATA[IEEE Transactions on Industrial Electronics]]></source>
<year>2021</year>
<volume>68</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>9619-29</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="">
<collab>Enerdata</collab>
<source><![CDATA[Datos sobre la cuota de energía eólica y solar en la producción de electricidad]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Freddy]]></surname>
<given-names><![CDATA[T. K. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Rahim]]></surname>
<given-names><![CDATA[N. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hew]]></surname>
<given-names><![CDATA[W.-P.]]></given-names>
</name>
<name>
<surname><![CDATA[Che]]></surname>
<given-names><![CDATA[H. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modulation techniques to reduce leakage current in three-phase transformerless H7 photovoltaic inverter]]></article-title>
<source><![CDATA[IEEE Transactions on Industrial Electronics]]></source>
<year>2015</year>
<volume>62</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>322-31</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Cavalcanti]]></surname>
<given-names><![CDATA[M. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Farias]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Single-carrier modulation for neutral-point-clamped inverters in three-phase transformerless photovoltaic systems]]></article-title>
<source><![CDATA[IEEE Transactions on Power Electronics]]></source>
<year>2013</year>
<volume>28</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>2635-7</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huber]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Kolar]]></surname>
<given-names><![CDATA[J. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Volume/weight/cost comparison of a 1MVA 10 kV/400 V solid-state against a conventional low-frequency distribution transformer]]></article-title>
<source><![CDATA[IEEE Energy Conversion Congress and Exposition (ECCE)]]></source>
<year>2014</year>
<page-range>4545-52</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<collab>Infineon Technologies AG</collab>
<source><![CDATA[IGBTs-insulated gate bipolar transistors]]></source>
<year></year>
<publisher-name><![CDATA[Infineon Technologies AG]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ko]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Tcai]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Liserre]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[DC-link voltage balancing modulation for cascaded H-bridge converters]]></article-title>
<source><![CDATA[IEEE Access]]></source>
<year>2021</year>
<volume>9</volume>
<page-range>103524-32</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kouro]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Malinowski]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Gopakumar]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Pou]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Franquelo]]></surname>
<given-names><![CDATA[L. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Leon]]></surname>
<given-names><![CDATA[J. I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Recent advances and industrial applications of multilevel converters]]></article-title>
<source><![CDATA[IEEE Transactions on Industrial Electronics]]></source>
<year>2010</year>
<volume>57</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>2553-80</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[E.-J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[K.-B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modulation methods based on phase-shifted PWM for H-bridge multilevel inverters]]></article-title>
<source><![CDATA[2020 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)]]></source>
<year>2020</year>
<page-range>189-93</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marzo]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Sanchez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Barrena]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Abad]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Muguruza]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Power balancing in cascaded H-bridge and modular multilevel converters under unbalanced operation: A review]]></article-title>
<source><![CDATA[IEEE Access]]></source>
<year>2021</year>
<volume>9</volume>
<page-range>110525-43</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marzoughi]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Burgos]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Boroyevich]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Xue]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Design and comparison of cascaded H-bridge, modular multilevel converter and 5-L active neutral point clamped topologies for drive application]]></article-title>
<source><![CDATA[IEEE Energy Conversion Congress and Exposition (ECCE)]]></source>
<year>2015</year>
<page-range>4033-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rahimi]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Farhangi]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Farhangi]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Moradi]]></surname>
<given-names><![CDATA[G. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Afshari]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Blaabjerg]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[H8 inverter to reduce leakage current in transformerless three-phase grid-connected photovoltaic systems]]></article-title>
<source><![CDATA[IEEE Journal of Emerging and Selected Topics in Power Electronics]]></source>
<year>2018</year>
<volume>6</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>910-8</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rahman]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Meraj]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Iqbal]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Prathap-Reddy]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A combinational level shifted and phase shifted PWM technique for symmetrical power distribution in CHB inverters]]></article-title>
<source><![CDATA[IEEE Journal of Emerging and Selected Topics in Power Electronics]]></source>
<year>2021</year>
<volume>11</volume>
<numero>1</numero>
<issue>1</issue>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shi]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Tolbert]]></surname>
<given-names><![CDATA[L. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A comparison of phase disposition and phase shift PWM strategies for modular multilevel converters]]></article-title>
<source><![CDATA[2013 IEEE Energy Conversion Congress and Exposition]]></source>
<year>2013</year>
<page-range>4089-96</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Mishra]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Kant]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Power quality improvement in single phase five level cascaded grid interfaced systems]]></article-title>
<source><![CDATA[2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)]]></source>
<year>2018</year>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tarisciotti]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zanchetta]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Watson]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bifaretti]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Clare]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Wheeler]]></surname>
<given-names><![CDATA[P. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Active DC voltage balancing PWM technique for high-power cascaded multilevel converters]]></article-title>
<source><![CDATA[IEEE Transactions on Industrial Electronics]]></source>
<year>2014</year>
<volume>61</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>6157-67</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vineeth]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Jayaprakash]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Subramaniam]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modified H-bridge multilevel inverter for grid integration with voltage balancing circuit]]></article-title>
<source><![CDATA[2020 International Conference on Power Electronics and Renewable Energy Applications (PEREA)]]></source>
<year>2020</year>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ye]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ren]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Song]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Research on power-balance control strategy of CHB multilevel inverter based on TPWM]]></article-title>
<source><![CDATA[IEEE Access]]></source>
<year>2019</year>
<volume>7</volume>
<page-range>157226-40</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
