COPOCO

Optimizing power density of aircraft inverter by optimized topology and PWM-pattern

Coordinatore	TECHNISCHE UNIVERSITAET DARMSTADT    more  Organization address address: Karolinenplatz 5 city: DARMSTADT postcode: 64289 contact info Titolo: Dr. Nome: Melanie Cognome: Meermann-Zimmermann Email: send email Telefono: +496151 16 57225
Nazionalità Coordinatore	Germany [DE]
Totale costo	496˙084 €
EC contributo	372˙063 €
Programma	FP7-JTI Specific Programme "Cooperation": Joint Technology Initiatives
Code Call	SP1-JTI-CS-2013-03
Funding Scheme	JTI-CS
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-10-01   -   2016-11-30

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	TECHNISCHE UNIVERSITAET DARMSTADT  Organization address address: Karolinenplatz 5 city: DARMSTADT postcode: 64289 contact info Titolo: Dr. Nome: Melanie Cognome: Meermann-Zimmermann Email: send email Telefono: +496151 16 57225	DE (DARMSTADT)	coordinator	372˙063.00

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 Obiettivo del progetto (Objective)

'The project is aimed at an increase of power density (kW per kg) of a three-phase inverter for aerospace application (power range 10 … 50 kW) of at least 10% with a concomitant compliance with RTCA DO-160, chapter 21 CMC limits.

The increase in power density will be achieved by implementing an innovative topology based upon: • Transition of the H5 or HERIC topology from single phase to a three phase inverter implementation • Application of the 3L-T-Type inverter which can be derived from a 2L-inverter with three additional, bidirectional switches which connect the AC terminals with the center-tapped DC link • And applying of appropriate modulation techniques which make use of switching states with reduced CMV levels

The resulting solutions will be compared with a state-of-the-art 2L-VSI power core based upon the following criteria: • Produced CMV and CMC levels, given by a quality parameter based upon RTCA DO-160, chapter 21 • Total weight for a 10 kW and a 50 kW power core implementation taking into account all relevant parts incl. gate driver, passive components for filter and cooling. The 10 kW power will be air cooled (natural convection), the 50 kW power core liquid cooled • Efficiency • the influence of the switching speed dv/dt will be taken into account, as today there exists a limit of approximately 5 kV/µs for the motor. Furthermore a too high dv/dt produces a significant amount of EMI'