Bidirectional power conversion
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsHirotaka KARAKAMA, Keisei INOKI, Yoichi YANO, Takahiro UCHINO, Toshihiro HANADA
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Abstract
A power conversion apparatus includes: matrix converter circuitry configured to perform bidirectional power conversion between a primary side and a secondary side; and control circuitry configured to: calculate a deterioration level based on a secondary side current of the matrix converter circuitry, a carrier frequency, and a primary-secondary frequency difference between a primary side frequency and a secondary side frequency of the matrix converter circuitry; and output a deterioration notification in response to determining that the deterioration level exceeds a predetermined level.
Claims20
A power conversion apparatus comprising:
- matrix converter circuitry configured to perform bidirectional power conversion between a primary side and a secondary side;
- and
- control circuitry configured to:
- calculate a deterioration level based on a secondary side current of the matrix converter circuitry, a carrier frequency, and a primary-secondary frequency difference between a primary side frequency and a secondary side frequency of the matrix converter circuitry;
- and
- output a deterioration notification in response to determining that the deterioration level exceeds a predetermined level.
A power conversion method comprising:
- calculating a deterioration level based on a secondary side current, a carrier frequency of matrix converter circuitry performing bidirectional power conversion between primary side power and secondary side power, and a primary-secondary frequency difference between a primary side frequency and a secondary side frequency of the matrix converter circuitry;
- and
- outputting a deterioration notification in response to determining that the deterioration level exceeds a predetermined level.
A non-transitory memory device having instructions stored thereon that, in response to execution by a processing device, cause the processing device to perform operations comprising:
- calculating a deterioration level based on a secondary side current, a carrier frequency of matrix converter circuitry performing bidirectional power conversion between primary side power and secondary side power, and a primary-secondary frequency difference between a primary side frequency and a secondary side frequency of the matrix converter circuitry;
- and
- outputting a deterioration notification in response to determining that the deterioration level exceeds a predetermined level.
Dependencies are inferred from the claim text.