Direct Current Link Circuit
1 Assignment
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Accused Products
Abstract
An electronic circuit for converting power from a floating source of DC power to a dual direct current (DC) output is disclosed. The electronic circuit may include a positive input terminal and a negative input terminal connectible to the floating source of DC power. The dual DC output may connectible to the input of an inverter. A positive output terminal connected to the positive input terminal of the inverter and a negative output terminal and a ground terminal which may be connected to the input of the inverter. A series connection of a first power switch and a second power switch connected across the positive input terminal and the negative input terminal. A negative return path may include a first diode and a second diode connected between the negative input terminal and the negative output terminal. A resonant circuit may connect between the series connection and the negative return path.
9 Citations
35 Claims
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1-15. -15. (canceled)
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16. An electronic circuit comprising:
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first and second terminals adapted to be connected across a floating source of direct current (DC) power; third and fourth terminals; first and second switches in series across the first and the second terminals, wherein a first node is formed between the first and the second switches, and wherein the first switch is between the first node and the third terminal; a first diode between the fourth terminal and a second node; and a first resonant circuit in series between the first node and a second node, wherein the electronic circuit is configured such that when the first switch is closed and the second switch is open, the first resonant circuit is connected across the first and the second terminals, and such that when the first switch is open and the second switch is closed, the third terminal, the fourth terminal, the first diode, and the first resonant circuit are in series across the first and the second terminals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An electronic circuit comprising:
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first and second terminals adapted to be connected across a floating source of direct current (DC) power; third and fourth terminals adapted to be connected to a load; first and second switches in series across the first and the second terminals, wherein a first node is formed between the first and the second switches, and wherein the first switch is between the first node and the third terminal; a first diode between the fourth terminal and a second node; and a resonant circuit in series between the first node and a second node, wherein the electronic circuit is configured such that when the first switch is closed and the second switch is open, first current flows from the floating source of DC power through the resonant circuit, and such that when the first switch is open, the second switch is closed, and the load is connected to the third and fourth terminals, a second current flows from the first terminal through the load, the first diode, the resonant circuit, and the second terminal in series. - View Dependent Claims (28, 29, 30)
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31. A method comprising:
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connecting a floating source of direct current (DC) power across first and second terminals of a circuit, the circuit comprising; third and fourth terminals; first and second switches connected in series across the first and the second terminals, wherein a first node is formed between the first and the second switches, and wherein the first switch is between the first node and the third terminal; a first diode between the fourth terminal and a second node; and a resonant circuit in series between the first node and a second node, wherein the electronic circuit is configured such that when the first switch is closed and the second switch is open, the resonant circuit is connected across the first and the second terminals, and such that when the first switch is open and the second switch is closed, the third terminal, the fourth terminal, the first diode, and the resonant circuit are in series across the first and the second terminals; and causing the first and the second switches to be gated alternatively, such that the first switch is closed and the second switch is open during a first phase of a pulse width modulation (PWM) cycle thereby charging the resonant circuit from the floating source of DC power, and such that the first switch is open and the second switch is closed during a second phase of the PWM cycle thereby discharging the resonant circuit to provide converted power to a load connected to the third terminal, the fourth terminal, and to ground. - View Dependent Claims (32, 33, 34, 35)
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Specification