Variable DC link converter and transformer for wide output voltage range applications
First Claim
1. A power converter, comprising:
- a first converter stage configured to convert power from a power source to power at an intermediate link voltage;
a second converter stage configured to convert the power at the intermediate link voltage to power for charging a battery; and
a control system comprising;
an intermediate link voltage regulation control loop configured, in a first mode of operation, to regulate the intermediate link voltage through the first converter stage based on a voltage of the battery; and
a ripple regulation control loop configured to sense a charging current for the battery and regulate a gain of the second converter stage based on the charging current to reduce ripple in the charging current.
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Accused Products
Abstract
A variable direct current (DC) link power converter is described. In one example, the power converter includes a first converter stage configured to convert power from a power source to power at an intermediate link voltage and a second converter stage configured to convert the power at the intermediate link voltage to power for charging a battery. The power converter further includes a control system having an intermediate link voltage regulation control loop configured, in a first mode of operation, to regulate the intermediate link voltage through the first converter stage based on a voltage of the battery, and a ripple regulation control loop configured to sense a charging current for the battery and regulate a gain of the second converter stage based on the charging current to reduce ripple in the charging current. A new configuration of transformer suitable for use with the power converter is also described.
8 Citations
19 Claims
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1. A power converter, comprising:
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a first converter stage configured to convert power from a power source to power at an intermediate link voltage; a second converter stage configured to convert the power at the intermediate link voltage to power for charging a battery; and a control system comprising; an intermediate link voltage regulation control loop configured, in a first mode of operation, to regulate the intermediate link voltage through the first converter stage based on a voltage of the battery; and a ripple regulation control loop configured to sense a charging current for the battery and regulate a gain of the second converter stage based on the charging current to reduce ripple in the charging current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A power converter, comprising:
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a first converter stage and a second converter stage configured to convert power using an intermediate link voltage; and a control system comprising; an intermediate link voltage regulation control loop configured to regulate the intermediate link voltage through at least one of the first converter stage or the second converter stage; and a ripple regulation control loop configured to regulate a gain of the first converter stage or the second converter stage to reduce ripple in current output by the power converter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification