US 12,266,935 B2
Power conversion device
Kaho Mukunoki, Tokyo (JP); Hiroki Ishihara, Tokyo (JP); and Toshiyuki Fujii, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 18/569,604
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jun. 24, 2021, PCT No. PCT/JP2021/023950
§ 371(c)(1), (2) Date Dec. 13, 2023,
PCT Pub. No. WO2022/269858, PCT Pub. Date Dec. 29, 2022.
Prior Publication US 2024/0291275 A1, Aug. 29, 2024
Int. Cl. H02J 3/18 (2006.01); H02J 3/24 (2006.01); H02J 3/40 (2006.01)
CPC H02J 3/1885 (2013.01) [H02J 3/241 (2020.01); H02J 3/40 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power conversion device comprising:
a power converter connected to a power storage element; and
a control device to control the power converter, wherein
the power converter converts a DC power output from the power storage element into an AC power and outputs the AC power to a power grid,
the control device includes
a generator simulating unit to generate a voltage command value for the power converter by simulating characteristics of a plurality of synchronous generators, and
a signal generating unit to generate a control signal for the power converter, based on the voltage command value generated by the generator simulating unit, and
the generator simulating unit includes
a first characteristics simulating unit to generate a first command value by simulating characteristics of a first synchronous generator,
a second characteristics simulating unit to generate a second command value by simulating characteristics of a second synchronous generator different from the characteristics of the first synchronous generator,
an adder to perform addition of the first command value and the second command value, and
a voltage command generating unit to generate the voltage command value, based on an addition result of the first command value and the second command value.