SYSTEMS AND METHODS FOR DISCHARGING BUS VOLTAGE USING SEMICONDUCTOR DEVICES
First Claim
Patent Images
1. An electrical system comprising:
- a first switch coupled to a first voltage rail;
a second switch coupled between the first switch and a second voltage rail; and
a control system coupled to the first switch and the second switch, wherein the control system is configured to alternately activate the first switch and the second switch such that an energy potential between the first voltage rail and the second voltage rail is dissipated through the first switch and the second switch.
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Abstract
Systems and methods are provided for discharging a voltage bus. An electrical system comprises a first switch coupled to a first voltage rail, a second switch coupled between the first switch and a second voltage rail, and a control system coupled to the first switch and the second switch. The control system is configured to alternately activate the first switch and the second switch such that an energy potential between the first voltage rail and the second voltage rail is dissipated through the first switch and the second switch.
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Citations
20 Claims
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1. An electrical system comprising:
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a first switch coupled to a first voltage rail; a second switch coupled between the first switch and a second voltage rail; and a control system coupled to the first switch and the second switch, wherein the control system is configured to alternately activate the first switch and the second switch such that an energy potential between the first voltage rail and the second voltage rail is dissipated through the first switch and the second switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrical system in a vehicle, the electrical system comprising:
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a voltage bus; a capacitive element coupled to the voltage bus; an electric motor having one or more windings; an inverter module coupled between the voltage bus and the electric motor, the inverter module including one or more inverter phase legs, wherein each inverter phase leg corresponds to a respective winding of the electric motor; and a control system coupled to the inverter module, wherein the control system is configured to; operate the one or more inverter phase legs to deliver power to the electric motor; and in response to a discharge condition, toggle at least one of the inverter phase legs to dissipate energy potential on the voltage bus. - View Dependent Claims (12, 13, 14)
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15. A method for discharging an energy potential between a first conductive element and a second conductive element using an inverter module coupled to the first conductive element and the second conductive element, the inverter module including a first set of one or more switches coupled to the first conductive element and a second set of one or more switches coupled to the second conductive element, the method comprising:
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identifying a discharge condition; and in response to the discharge condition, alternately dissipating the energy potential through the first set of switches or the second set of switches, wherein the first set of switches and the second set of switches do not dissipate energy simultaneously. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification