Method to determine an operating characteristic of a vehicle power converter
First Claim
1. A method for determining, without measuring, an operating characteristic of a DC/DC power converter for an automotive vehicle including a power storage unit and a bus wherein the DC/DC power converter has a storage side electrically connected with the power storage unit and a bus side electrically connected with the bus and wherein the DC/DC power converter includes a first capacitor, having a first voltage, electrically connected with the storage side and a second capacitor, having a second voltage, electrically connected with the bus side, the method comprising:
- determining a duty cycle of the DC/DC power converter;
measuring one of the first and second voltages; and
determining, without measuring, the other of the first and second voltages based on the duty cycle and the one of the first and second voltages thereby determining the operating characteristic of the DC/DC power converter.
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Accused Products
Abstract
Measured or otherwise known operating characteristics of a DC/DC power converter are used to determine, without measuring, an operating characteristic of the DC/DC power converter.
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Citations
15 Claims
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1. A method for determining, without measuring, an operating characteristic of a DC/DC power converter for an automotive vehicle including a power storage unit and a bus wherein the DC/DC power converter has a storage side electrically connected with the power storage unit and a bus side electrically connected with the bus and wherein the DC/DC power converter includes a first capacitor, having a first voltage, electrically connected with the storage side and a second capacitor, having a second voltage, electrically connected with the bus side, the method comprising:
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determining a duty cycle of the DC/DC power converter; measuring one of the first and second voltages; and determining, without measuring, the other of the first and second voltages based on the duty cycle and the one of the first and second voltages thereby determining the operating characteristic of the DC/DC power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining, without measuring, an operating characteristic of a DC/DC power converter for an automotive vehicle including a power storage unit and a bus, wherein the DC/DC power converter has a storage side electrically connected with the power storage unit and a bus side electrically connected with the bus, wherein the DC/DC power converter includes a first capacitor, having a first voltage, electrically connected with the storage side, a second capacitor, having a second voltage, electrically connected with the bus side, and an inductor, having an inductance, electrically connected with the storage side, and wherein a current flows through the inductor, the method comprising:
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determining at least one of an on time and an off time of the DC/DC power converter; measuring all but one of the first voltage, the second voltage, and a ripple of the current thereby identifying measured operating characteristics; and determining, without measuring, the other of the first voltage, the second voltage, and the ripple of the current based on one of the on time and off time, the measured operating characteristics, and the inductance thereby determining the operating characteristic of the DC/DC power converter. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification