US 12,068,645 B2
System configured to deliver a polyphase current of constant frequency from a synchronous generator
Christelle Saber, Moissy-Cramayel (FR); Anthony Gimeno, Moissy-Cramayel (FR); Cyrille Gautier, Moissy-Cramayel (FR); Stephane Petibon, Moissy-Cramayel (FR); and Toni Youssef, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/437,308
Filed by SAFRAN, Paris (FR)
PCT Filed Mar. 10, 2020, PCT No. PCT/FR2020/050487
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/183102, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 1902569 (FR), filed on Mar. 13, 2019.
Prior Publication US 2022/0181957 A1, Jun. 9, 2022
Int. Cl. H02K 21/12 (2006.01); H02M 5/458 (2006.01); H02P 9/10 (2006.01); H02P 103/20 (2016.01)
CPC H02K 21/12 (2013.01) [H02M 5/4585 (2013.01); H02P 9/102 (2013.01); H02P 2103/20 (2015.01)] 10 Claims
OG exemplary drawing
 
1. A system configured to deliver as output a polyphase current of constant frequency from a synchronous generator driven at variable speed, said system successively comprising, at the output of said generator an AC to DC rectifier, a DC bus and a DC to AC inverter for the output of said system, the output inverter of said system or the DC bus comprising an arm connected to the neutral, said output inverter further comprising one arm per phase of the polyphase alternating current at the output of said system, said rectifier being an active rectifier comprising at least one arm for each phase of a polyphase current at the output of said generator, each arm comprising at least one controllable switch, said system also comprising an electronic control unit configured to drive said active rectifier with first means for controlling said at least one controllable switch of each arm, said system being characterised in that the electronic control unit comprises means for monitoring a respective upstream and downstream voltage for the active rectifier and/or for the output inverter of said system and second means for controlling said output inverter, in that each arm per phase of said output inverter comprises at least one controllable switch configured to be driven by the second controlling means of the electronic control unit, and in that said system comprises an electromagnetic compatibility filter at the output of the output inverter of said system, said filter comprising an arm for each phase of the polyphase current at the output of said system, each arm of each phase comprising an inductor, a capacitor mounted in a bypass of each arm downstream of said inductor, the arm connected to the neutral being connected to each bypass of the arms of the phases of the EMC filter and in that the arm connected to the neutral is connected in the output inverter to an additional arm to the arms of said inverter associated respectively with a phase of the current, said additional arm comprising at least one controllable switch.