Power conversion method using a synergetic control of two power converters
AssigneeInfineon Technologies Austria AG
InventorsJohann Walter Kolar, Yunni Li, Jannik Robin Schaefer
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Abstract
A power conversion method is disclosed. The method includes operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes, and operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter. Operating the SR converter includes regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.
Claims18
A power conversion method, comprising:
- operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes;
- and
- operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter,
- wherein operating the SR converter comprises regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and
- wherein the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.
A power converter arrangement, comprising:
- a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes;
- an SR converter coupled to the PFC converter via the DC link nodes;
- and
- a control circuit configured to:
- operate the PFC converter in one of at least two operating modes,
- operate the SR converter in one of at least two different operating modes dependent on an output voltage of the SR converter, and
- regulate, by operating the SR converter, a voltage level of the DC link voltage dependent on a DC link voltage reference,
- wherein the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.
Dependencies are inferred from the claim text.