US 11,990,830 B2
Power conversion system and virtual DC voltage generator circuit
Fumito Kusama, Kanagawa (JP); and Takaaki Norisada, Kanagawa (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/440,702
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 5, 2020, PCT No. PCT/JP2020/009526
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/189317, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-050368 (JP), filed on Mar. 18, 2019.
Prior Publication US 2022/0173652 A1, Jun. 2, 2022
Int. Cl. H02M 1/00 (2006.01); H02M 1/34 (2007.01); H02M 3/158 (2006.01); H02M 3/335 (2006.01); H02M 7/5387 (2007.01); H02M 1/08 (2006.01)
CPC H02M 1/007 (2021.05) [H02M 1/344 (2021.05); H02M 3/158 (2013.01); H02M 3/33576 (2013.01); H02M 7/53871 (2013.01); H02M 1/08 (2013.01)] 17 Claims
OG exemplary drawing
 
17. A power conversion system comprising:
a first circuit including a first internal terminal and a first external terminal and having the first external terminal electrically connected to either an AC power supply or an AC load; and
a second circuit including at least a second internal terminal,
the power conversion system being configured to transmit power between the first internal terminal of the first circuit and the second internal terminal of the second circuit,
the power conversion system further comprising a third circuit including a third internal terminal and a third external terminal,
the first internal terminal, the second internal terminal, and the third internal terminal being electrically connected to a same connection unit,
the third circuit including a switching element and a transformer electrically connected to the switching element, the third circuit being configured to provide an output voltage across a secondary winding of the transformer via the switching element and the transformer,
the secondary winding being electrically connected to the third internal terminal,
the output voltage having a waveform including:
a rising range in which the output voltage changes from a first potential to a second potential higher than the first potential;
a falling range in which the output voltage changes from the second potential to the first potential; and
a flat range in which the output voltage is maintained at either the first potential or the second potential, wherein
the first circuit includes a first switching element, the first switching element being different from a third switching element serving as the switching element,
the second circuit includes a second switching element, the second switching element being different from the first switching element and the third switching element,
the first circuit is configured to supply a first output current having a rectangular waveform to the first internal terminal by controlling ON/OFF states of the first switching element, and
the second circuit is configured to supply a second output current having a rectangular waveform to the second internal terminal by controlling ON/OFF states of the second switching element.