US 2012/0075899 A1 · INTERCONNECTION INVERTER DEVICE

Abstract

The interconnection point of capacitors C1, C2 is connected with one end of an electric power system and one end of a reactor L. First switch section (S1, D1) is connected, at its respective ends, to the positive electrode of the direct-current DC power source, and to the other end of the reactor L. One end of a second switch section (S2, D2) is connected to the negative electrode of the DC power source, while the other end is connected to the other end of the reactor L. One end of a third switch section (S3, D3) is connected to the other end of the reactor L, while the other end is connected to the other end of the electric power system. One end of a fourth switch section (S4, D4) is connected to the other end of the reactor L, while the other end is connected to the other end of the electric power system.

Claims8

Dependent claims

An interconnection inverter device for converting direct-current power fed from a direct-current power source to alternating-current power to interconnect to an electric power system, the interconnection inverter device comprising:

first and second capacitors which are connected in series to both ends of the direct-current power source and an interconnection point of which is connected to one end of the electric power system;
a reactor with one end connected to the connection point between the first capacitor and the second capacitor;
a first switch section with one end connected to a positive electrode of the direct-current power source and the other end connected to the other end of the reactor;
a second switch section with one end connected to a negative electrode of the direct-current power source and the other end connected to the other end of the reactor;
a third switch section with one end connected to the other end of the reactor and the other end connected to the other end of the electric power system;
a fourth switch section with one end connected to the other end of the reactor and the other end connected to the other end of the electric power system;
and
a third capacitor connected to both ends of the electric power system in parallel thereto.

5 more elements

first and second capacitors which are connected in series to both ends of the direct-current power source and an interconnection point of which is connected to one end of the electric power system;
a reactor with one end connected to the connection point between the first capacitor and the second capacitor;
a first switch section actuated when energy from the first capacitor is stored in the reactor;
a second switch section actuated when energy from the second capacitor is stored in the reactor;
a third switch section actuated when the energy stored in the reactor is supplied by the actuation of the first switch section to the electric power system;
a fourth switch section actuated when the energy stored in the reactor is supplied by the actuation of the second switch section to the electric power system;
and
a third capacitor connected to both ends of the electric power system in parallel thereto.

5 more elements

Dependencies are inferred from the claim text.

Interconnection inverter device

Life of this patent

Interconnection inverter device

Life of this patent

Abstract

Claims8