Parallel operation system of ac output inverters

Details Parallel operation system of ac output inverters Parallel operation system of ac output inverters

H - Electricity

02

M

H02M 7/5395 (2006.01) H02J 3/46 (2006.01) H02M 7/48 (2006.01) H02M 7/5387 (2006.01)

Patent

CA 2066490

Disclosed is a parallel operation system comprising: AC output inverters for controlling instantaneous values of output voltages by causing arms in respective phases to effect switching plural times during one cycle; a bus for connecting outputs of the inverters to a load so that a load current is shared by the inverters; a synchronous circuit for synchronizing the inverters by outputting common synchronous signals to the inverters; a detection circuit for detecting a cross current component of an electric current flowing between the inverters; and a control circuit for controlling the output voltages of the inverters to restrain the cross current component detected by the detection circuit.

L'invention est un système d'exploitation parallèle comportant des inverseurs à sortie alternative servant à contrôler des tensions de sortie instantanées en faisant commuter plusieurs fois au cours d'un cycle les branchements des différentes phases, un bus servant à connecter les sorties des inverseurs à une charge de façon que le courant de charge soit réparti entre les inverseurs, un circuit synchrone servant à synchroniser les inverseurs en transmettant des signaux synchrones communs à ces derniers, un circuit servant à détecter la composante de croisement d'un courant électrique circulant entre les inverseurs et un circuit servant à commander les tensions de sortie des inverseurs pour limiter le courant de croisement détecté.

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