US 2019/0058329 A1 · POWER FLUCTUATION MITIGATION SYSTEM

Abstract

A power fluctuation mitigation system includes a first converter coupled to an AC power supply to perform AC-to-DC conversion, an inverter coupled to the first converter via a DC intermediate condenser to perform DC-to-AC conversion to supply power to an AC load, a second converter coupled to the AC power supply to perform AC-to-DC conversion, an electric storage device configured to be charged by a DC output power of the second converter, and a DC/DC converter coupled between the DC intermediate condenser and the electric storage device to perform DC power conversion, wherein a DC power obtained by activating the DC/DC converter is supplied to the DC intermediate condenser as a compensating power upon a change in an output of the inverter occurring due to fluctuation of the AC load.

Claims6

Dependent claims

A power fluctuation mitigation system, comprising:

a first converter coupled to an AC power supply to perform AC-to-DC conversion;
an inverter coupled to the first converter via a DC intermediate condenser to perform DC-to-AC conversion to supply power to an AC load;
a second converter coupled to the AC power supply to perform AC-to-DC conversion;
an electric storage device configured to be charged by a DC output power of the second converter;
and
a DC/DC converter coupled between the DC intermediate condenser and the electric storage device to perform DC power conversion,
wherein a DC power obtained by activating the DC/DC converter is supplied to the DC intermediate condenser as a compensating power upon a change in an output of the inverter occurring due to fluctuation of the AC load.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/015,398Filed 22 Jun 2018

Priority

JP 2017-15832921 Aug 2017

Published

21 Feb 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

H02J 3/32
Arrangements for balancing of the load in networks by storage of energy: using batteries or super capacitors with converting means
H02J 3/01
Circuit arrangements for AC mains or AC distribution networks: arrangements for reducing harmonics or ripples
H02J 3/36
Circuit arrangements for AC mains or AC distribution networks: arrangements for transfer of electric power between AC networks via high-voltage DC…
H02J 7/345
Parallel operation in networks using both storage and other DC sources, e.g. providing buffering: using capacitors as storage or buffering devices

Power fluctuation mitigation system

Life of this patent

Power fluctuation mitigation system

Life of this patent

Abstract

Claims6