Hybrid Overmodulation Strategy for Dual Two-Level Inverter with Arbitrary DC-Bus Voltage Distribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00375441" target="_blank" >RIV/68407700:21230/24:00375441 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/TPEL.2024.3410682" target="_blank" >https://doi.org/10.1109/TPEL.2024.3410682</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TPEL.2024.3410682" target="_blank" >10.1109/TPEL.2024.3410682</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hybrid Overmodulation Strategy for Dual Two-Level Inverter with Arbitrary DC-Bus Voltage Distribution

Popis výsledku v původním jazyce

This paper introduces an innovative overmodulation strategy for a dual two-level inverter topology featuring galvanically isolated DC-links and accommodating arbitrary distribution of DC-bus voltages. In such a configuration, the uneven distribution of DC voltages gives rise to 12 additional fundamental voltage vectors compared to the conventional two-level inverter, effectively enabling the topology to function as a five-level inverter. The primary innovation of our proposed method lies in its ability to transition from linear modulation to what we term an 18-step operation – an improved multilevel square-wave operation of the inverter. This extended operational range is achieved through a hybrid space vector PWM approach, a well-established technique in the context of two-level inverters. Moreover, this paper presents a crucial nonlinear gain compensation characteristic essential for real-time control applications. To validate the effectiveness of our approach, we conducted experiments using a custom 15-kW GaN dual inverter. These experiments included the implementation of a straightforward V/Hz control of a 12-kW induction motor supplied by the dual inverter. The results of our experiments confirm the strategy's effectiveness, demonstrating superior current waveform quality and a seamless transition from linear modulation mode to the 18-step operation.

Název v anglickém jazyce

Hybrid Overmodulation Strategy for Dual Two-Level Inverter with Arbitrary DC-Bus Voltage Distribution

Popis výsledku anglicky

This paper introduces an innovative overmodulation strategy for a dual two-level inverter topology featuring galvanically isolated DC-links and accommodating arbitrary distribution of DC-bus voltages. In such a configuration, the uneven distribution of DC voltages gives rise to 12 additional fundamental voltage vectors compared to the conventional two-level inverter, effectively enabling the topology to function as a five-level inverter. The primary innovation of our proposed method lies in its ability to transition from linear modulation to what we term an 18-step operation – an improved multilevel square-wave operation of the inverter. This extended operational range is achieved through a hybrid space vector PWM approach, a well-established technique in the context of two-level inverters. Moreover, this paper presents a crucial nonlinear gain compensation characteristic essential for real-time control applications. To validate the effectiveness of our approach, we conducted experiments using a custom 15-kW GaN dual inverter. These experiments included the implementation of a straightforward V/Hz control of a 12-kW induction motor supplied by the dual inverter. The results of our experiments confirm the strategy's effectiveness, demonstrating superior current waveform quality and a seamless transition from linear modulation mode to the 18-step operation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Power Electronics

ISSN

0885-8993

e-ISSN

1941-0107

Svazek periodika

39

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

11479-11492

Kód UT WoS článku

001273801000099

EID výsledku v databázi Scopus

2-s2.0-85195388713