Power conversion device
AssigneesMitsubishi Electric Corporation, Toshiba Mitsubishi-Electric Industrial Systems Corporation
InventorsAkito Nakayama, Taichiro Tsuchiya, Jumpei Isozaki
Life of this patent
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Abstract
A main circuit power supply device includes: a plurality of voltage-division power storage elements connected in series; voltage adjustment circuits for adjusting 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 voltage-division power storage elements and supplies a control power source to a main circuit control circuitry to control a main circuit.
Claims20
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.
Dependencies are inferred from the claim text.