Active Voltage Balancing Control of A 7-Level Hybrid Multilevel Converter Topology

Arash Khoshkbarsadigh; Vahid Dargahi; Ramin Rahimzadeh Khorasani; Jose Rodriguez

doi:10.1109/TIE.2020.3048288

Active Voltage Balancing Control of A 7-Level Hybrid Multilevel Converter Topology

Arash Khoshkbarsadigh, Vahid Dargahi, Ramin Rahimzadeh Khorasani, Jose Rodriguez

Engineering School

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The series connection of a standard 3-level active neutral-point-clamped (ANPC) inverter and two cascaded H-bridge (CHB) modules comprising the flyingcapacitors (FCs) instead of the isolated dc-voltage sources forms a 7-level hybrid topology that is referred to as improved ANPC (I-ANPC) converter. This paper proposes an active voltage balancing technique for control of this hybrid multilevel inverter. The suggested method is based on a set of effortless logic-equations that aim to stabilize the FC voltages within the CHB modules at their requisite reference values as well as to control the output voltage of the overall hybrid converter based on the phase-shiftedcarrier pulse-width-modulation (PSC-PWM) strategy. The experimental results obtained from a single-phase I-ANPC inverter's prototype are presented to validate the proposed control technique and its simple logic-equations.

Original language	English
Pages (from-to)	74-89
Number of pages	16
Journal	IEEE Transactions on Industrial Electronics
Volume	69
Issue number	1
DOIs	https://doi.org/10.1109/TIE.2020.3048288
Publication status	Accepted/In press - 2021

Keywords

Active voltage balancing
Cost function
cost-function elimination
direct method
ease of implementation
effortless logic equations
fast method
FPGA
Inverters
optimization-less
Pulse width modulation
Support vector machines
Switches
Topology
Voltage control

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

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10.1109/TIE.2020.3048288

Cite this

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title = "Active Voltage Balancing Control of A 7-Level Hybrid Multilevel Converter Topology",

abstract = "The series connection of a standard 3-level active neutral-point-clamped (ANPC) inverter and two cascaded H-bridge (CHB) modules comprising the flyingcapacitors (FCs) instead of the isolated dc-voltage sources forms a 7-level hybrid topology that is referred to as improved ANPC (I-ANPC) converter. This paper proposes an active voltage balancing technique for control of this hybrid multilevel inverter. The suggested method is based on a set of effortless logic-equations that aim to stabilize the FC voltages within the CHB modules at their requisite reference values as well as to control the output voltage of the overall hybrid converter based on the phase-shiftedcarrier pulse-width-modulation (PSC-PWM) strategy. The experimental results obtained from a single-phase I-ANPC inverter's prototype are presented to validate the proposed control technique and its simple logic-equations.",

keywords = "Active voltage balancing, Cost function, cost-function elimination, direct method, ease of implementation, effortless logic equations, fast method, FPGA, Inverters, optimization-less, Pulse width modulation, Support vector machines, Switches, Topology, Voltage control",

author = "Arash Khoshkbarsadigh and Vahid Dargahi and {Rahimzadeh Khorasani}, Ramin and Jose Rodriguez",

year = "2021",

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AU - Dargahi, Vahid

AU - Rahimzadeh Khorasani, Ramin

AU - Rodriguez, Jose

PY - 2021

Y1 - 2021

N2 - The series connection of a standard 3-level active neutral-point-clamped (ANPC) inverter and two cascaded H-bridge (CHB) modules comprising the flyingcapacitors (FCs) instead of the isolated dc-voltage sources forms a 7-level hybrid topology that is referred to as improved ANPC (I-ANPC) converter. This paper proposes an active voltage balancing technique for control of this hybrid multilevel inverter. The suggested method is based on a set of effortless logic-equations that aim to stabilize the FC voltages within the CHB modules at their requisite reference values as well as to control the output voltage of the overall hybrid converter based on the phase-shiftedcarrier pulse-width-modulation (PSC-PWM) strategy. The experimental results obtained from a single-phase I-ANPC inverter's prototype are presented to validate the proposed control technique and its simple logic-equations.

AB - The series connection of a standard 3-level active neutral-point-clamped (ANPC) inverter and two cascaded H-bridge (CHB) modules comprising the flyingcapacitors (FCs) instead of the isolated dc-voltage sources forms a 7-level hybrid topology that is referred to as improved ANPC (I-ANPC) converter. This paper proposes an active voltage balancing technique for control of this hybrid multilevel inverter. The suggested method is based on a set of effortless logic-equations that aim to stabilize the FC voltages within the CHB modules at their requisite reference values as well as to control the output voltage of the overall hybrid converter based on the phase-shiftedcarrier pulse-width-modulation (PSC-PWM) strategy. The experimental results obtained from a single-phase I-ANPC inverter's prototype are presented to validate the proposed control technique and its simple logic-equations.

KW - Active voltage balancing

KW - Cost function

KW - cost-function elimination

KW - direct method

KW - ease of implementation

KW - effortless logic equations

KW - fast method

KW - FPGA

KW - Inverters

KW - optimization-less

KW - Pulse width modulation

KW - Support vector machines

KW - Switches

KW - Topology

KW - Voltage control

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Active Voltage Balancing Control of A 7-Level Hybrid Multilevel Converter Topology

Abstract

Keywords

ASJC Scopus subject areas

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