Resonant Inverter
First Claim
1. A resonant inverter comprising an input for supply of current from a DC power source, and two or more inductive elements that form part of a resonant circuit of the inverter, wherein leakage inductance of one or both of the inductive elements substantially decouples the inverter from the power source.
1 Assignment
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Accused Products
Abstract
A resonant inverter includes inductive elements (L1, L2) that allow the number of magnetic components in the inverter to be reduced. The elements (L1, L2) may be designed with a leakage inductance to eliminate the need for a large DC inductor. They may also perform the function of a current splitting transformer. The inverter switches may also be driven directly from the inverter circuit without a separate controller being required.
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Citations
47 Claims
- 1. A resonant inverter comprising an input for supply of current from a DC power source, and two or more inductive elements that form part of a resonant circuit of the inverter, wherein leakage inductance of one or both of the inductive elements substantially decouples the inverter from the power source.
- 3. A resonant inverter an input for supply of current from a DC power source, a resonant circuit including two or more inductive elements and a capacitive element, the inductive elements being arranged to split current from the power source, switching means to controllable switch current from the power source into the resonant circuit, and wherein leakage inductance of one or both of the inductive elements substantially decouples the inverter from the power source.
- 10. A resonant inverter comprising an input for supply of current from a DC power source, a resonant circuit including two or more inductive elements and a capacitive element, the inductive elements being arranged to split current from the power source, two switching devices operable to controllably switch current from the power source into the resonant circuit in substantially opposite phase to alternately switch current from the power source into the inductive elements, each switching device being driven by a signal derived from the resonant circuit.
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18. A resonant inverter comprising:
- a first and a second input terminal for connection to a power source of substantially direct current electrical power;
two inductive elements each having first and second terminals, the first terminals of each of the inductors being connected to the first input terminal;
a capacitive element connected between the other terminals of the inductors, and;
a first switching means connected between the second terminal of one inductor and the second input terminal, and a second switching means connected between the second terminal of the other inductor and the second input terminal, and;
wherein leakage inductance of one or both of the inductive elements substantially decouples the inverter from the power source. - View Dependent Claims (20, 21, 22, 23, 24, 38, 42, 46)
- a first and a second input terminal for connection to a power source of substantially direct current electrical power;
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19. A resonant inverter comprising:
- a first and a second input terminal for connection to a power source of substantially direct current electrical power;
two inductive elements each having first and second terminals, the first terminals of each of the inductors being connected to the first input terminal;
a capacitive element connected between the other terminals of the inductor, and;
a first switching means connected between the second terminal of one inductor and the second input terminal, and a second switching means connected between the second terminal of the other inductor and the second input terminal, and;
each switching means is driven by a signal derived from the second inductor terminal to which that switch is not connected. - View Dependent Claims (32, 33, 34, 35, 39, 43, 47)
- a first and a second input terminal for connection to a power source of substantially direct current electrical power;
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28. A resonant inverter an input for supply of current from a DC power source, and two or more inductive elements that form part of a resonant circuit of the inverter, wherein leakage inductance of one or both of the inductive elements substantially provides a current source.
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29. A method of designing a resonant inverter, the method the steps of selecting a magnetic component for a resonant circuit of the inverter which has sufficient leakage flux to substantially decouple the inverter from a DC power source.
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30. (canceled)
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31. A method of designing a resonant inverter substantially as herein described with reference to
FIG. 8 of the accompanying drawings.
Specification