Variable voltage converter control in vehicles
First Claim
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1. A vehicle power system comprising:
- a gate driver configured to, in response to a throughput magnitude falling below a threshold, drive a traction gate and a generator gate corresponding to switches of a variable voltage converter such that the gates have alternating pulse width modulation ON periods, and in response to the throughput exceeding the threshold, drive the gates such that a duty cycle of one of the gates is zero.
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Abstract
A vehicle power system may include a gate driver configured to drive a traction gate and a generator gate corresponding to switches of a variable voltage controller such that the gates have alternating pulse width modulation ON periods. The gates may be driven in response to a throughput magnitude falling below a threshold. The gate driver may be further configured to drive the gates such that a duty cycle of one of the gates is zero in response to the throughput exceeding the threshold.
4 Citations
20 Claims
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1. A vehicle power system comprising:
a gate driver configured to, in response to a throughput magnitude falling below a threshold, drive a traction gate and a generator gate corresponding to switches of a variable voltage converter such that the gates have alternating pulse width modulation ON periods, and in response to the throughput exceeding the threshold, drive the gates such that a duty cycle of one of the gates is zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle comprising:
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a variable voltage converter (VVC), electrically coupled to a battery, a traction motor, and a generator, having a voltage converter portion that includes switches controlled by a gate driver that is configured to; in response to VVC power throughput being balanced, operate the switches in a combination switching mode such that a traction gate and a generator gate of the switches of the voltage converter portion have alternating pulse width modulation ON periods, in response to VVC power throughput recharging the battery, operate the gate driver in a generation switching mode such that a duty cycle of the traction gate is zero, and in response to VVC power throughput depleting the battery, operate the gate driver in a traction switching mode such that a duty cycle of the generator gate is zero. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A vehicle power system comprising:
a variable voltage converter configured to, in response to a throughput magnitude falling below a threshold, toggle switches associated with a traction mode and generator mode such that the switches have alternating pulse width modulation ON periods, and in response to the throughput exceeding the threshold, toggle the switches such that a duty cycle of one of the switches is zero.
Specification