Patent ID: 11888411
Assignee: TOSHIBA MITSUBISHI—ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power conversion device comprising:
a main circuit including a main circuit switching element and a main circuit power storage element;
main circuit control circuitry to control the main circuit; and
a main circuit power supply device to supply a control power source from the main circuit power storage element to the main circuit control circuitry, wherein
the main circuit power supply device includes
a plurality of voltage-division power storage elements connected in series,
a voltage adjustment circuit which is connected to the plurality of voltage-division power storage elements and adjusts each of voltages of the plurality of voltage-division power storage elements through mutual transfer of power between the plurality of voltage-division power storage elements, and
at least one DC/DC converter which is connected to at least one of the plurality of voltage-division power storage elements and supplies the control power source.