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A resonant supplied cascaded H-Bridge Cell for a Series Hybrid Cascaded H-Bridge Converter used as a Power Hardware in the Loop Emulator

Schwendemann, Rudiger; Sommer, Fabian; Hiller, Marc

Abstract (englisch):
This paper presents a resonant LLC DC/DC-converter supplied Cascaded H-Bridge (CHB) cell for the use in a Series Hybrid Cascaded H-Bridge (SH-CHB) converter. The SH-CHB converter, which consists of CHB-cells with a dv/dt-filter and series-connected Linear Power Amplifiers (LPA), is briefly introduced and the requirements for the CHB-cells are discussed. The LLC circuit is designed for a resonance frequency of 60-70 kHz. The CHB-cells have a maximum output current of 70 A and can provide an output voltage of +/- 30 V. The resulting maximum output power is 2.1 kVA. All passive components of the resonant LLC DC/DC-converter supplied CHB-cells are PCB integrated. For the control and communication, a FPGA board is developed and a new switching frequency adaption algorithm as well as a novel start-up control strategy for the resonant LLC circuit is implemented.

DOI: 10.1109/COMPEL49091.2020.9265686
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Proceedingsbeitrag
Publikationsmonat/-jahr 11.2020
Sprache Englisch
Identifikator ISBN: 978-1-72817-160-9
KITopen-ID: 1000127240
HGF-Programm 37.06.01 (POF III, LK 01) Networks and Storage Integration
Erschienen in 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL)
Veranstaltung 21st Workshop on Control and Modeling for Power Electronics (COMPEL 2020), Aalborg, Dänemark, 09.11.2020 – 12.11.2020
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Seiten 1–8
Schlagwörter serial hybrid converter, resonant LLC converter, soft start-up, control strategies, cascaded H-Bridge cell
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