Arm energy balancing techniques for modular multilevel converter for both equal and unequal frequencies operations

Gyanendra Kumar Sah

doi:10.18453/rosdok_id00004850

Gyanendra Kumar Sah

Arm energy balancing techniques for modular multilevel converter for both equal and unequal frequencies operations

Universität Rostock, 2023

https://doi.org/10.18453/rosdok_id00004850

Abstract: This work investigates and presents many possible degrees of freedom and arm energies regulation techniques of MMC for both equal and unequal single-phase and three-phase system frequency operations. Only four average arm energy controllers are found to be possible, which do not inject harmonics into the source and load currents. Of these four methods, only two are stable for equal frequency operations. A new seven-arm direct AC-AC MMC topology is proposed to increase the converter's power density if the source does not allow reactive power flow for equal frequency operation of MMC.

Dissertation Freier Zugang

Titel:

Arm energy balancing techniques for modular multilevel converter for both equal and unequal frequencies operations

Beteiligte Personen:

Gyanendra Kumar Sah[VerfasserIn]
	1370530102
Hans-Günter Eckel[AkademischeR BetreuerIn]
	0009-0009-2666-7309
	115363866
	Institut für Elektrische Energietechnik, University of Rostock
Marc Hiller[AkademischeR BetreuerIn]
	136858481
	Power Electronic Systems (PES), Elektrotechnisches Institut (ETI), Karlsruher Institut für Technologie (KIT)
Rainer Gruber[AkademischeR BetreuerIn]
	Siemens Mobility GmbH, Erlangen

Beteiligte Körperschaften:

Universität Rostock[Grad-verleihende Institution]
	38329-6
Universität Rostock. Fakultät für Informatik und Elektrotechnik[Grad-verleihende Institution]
	10085032-7

Zusammenfassung:

This work investigates and presents many possible degrees of freedom and arm energies regulation techniques of MMC for both equal and unequal single-phase and three-phase system frequency operations. Only four average arm energy controllers are found to be possible, which do not inject harmonics into the source and load currents. Of these four methods, only two are stable for equal frequency operations. A new seven-arm direct AC-AC MMC topology is proposed to increase the converter's power density if the source does not allow reactive power flow for equal frequency operation of MMC. [Englisch]

Dokumenttyp:

Dissertation

Einrichtung:

Fakultät für Informatik und Elektrotechnik

Sprache:

Englisch

Sachgruppe der DNB:

620 Ingenieurwissenschaften und Maschinenbau

621.3 Elektrotechnik, Elektronik

Veröffentlichung /
Entstehung:

Rostock: Universität Rostock

2023