METHOD FOR OPERATING AN INVERTER, AND INVERTER
First Claim
1. A method for operating an inverter for converting a direct current voltage of a solar generator into an alternating current voltage for supplying power to a network, the inverter including a step-up converter circuit, a dynamic intermediate circuit, and a step-down converter circuit, comprising:
- increasing, by the step-up converter circuit, the direct current voltage if the direct current voltage is lower than a peak-to-peak maximum of the network voltage;
lowering, by the step-down converter circuit, an intermediate circuit voltage, as needed, to a lower voltage currently required in the network; and
dynamically increasing, by the step-up converter circuit, the direct voltage to a value currently required in the network and temporarily supplying an approximately sinusoidal voltage curve for the intermediate circuit voltage.
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Accused Products
Abstract
In an inverter and a method for operating an inverter, the inverter includes a step-up converter circuit, a dynamic intermediate circuit, and a step-down converter circuit for converting a direct voltage of a direct voltage generator or string into an alternating voltage for supplying a network. The step-up converter circuit increases the direct voltage if the latter is lower than a peak-to-peak maximum of the network voltage, and the step-down converter circuit lowers a dynamic intermediate circuit voltage, as needed, to a lower voltage currently required in the network. The step-up converter circuit dynamically increases the direct voltage to the value currently required in the network and in the process temporarily supplies an approximately sinusoidal voltage curve for the intermediate circuit voltage.
122 Citations
10 Claims
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1. A method for operating an inverter for converting a direct current voltage of a solar generator into an alternating current voltage for supplying power to a network, the inverter including a step-up converter circuit, a dynamic intermediate circuit, and a step-down converter circuit, comprising:
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increasing, by the step-up converter circuit, the direct current voltage if the direct current voltage is lower than a peak-to-peak maximum of the network voltage; lowering, by the step-down converter circuit, an intermediate circuit voltage, as needed, to a lower voltage currently required in the network; and dynamically increasing, by the step-up converter circuit, the direct voltage to a value currently required in the network and temporarily supplying an approximately sinusoidal voltage curve for the intermediate circuit voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An inverter for converting a direct current voltage of a solar generator into an alternating current voltage for supplying power to a network, comprising:
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a step-up converter circuit; a dynamic intermediate circuit; and a step-down converter circuit; wherein the step-up converter circuit is adapted to increase the direct current voltage if the direct current voltage is lower than a peak-to-peak maximum of the network voltage; wherein the step-down converter circuit is adapted to lower an intermediate circuit voltage, as needed, to a lower voltage currently required in the network; and wherein the step-up converter circuit is adapted to dynamically increase the direct current voltage to the value currently required in the network and to temporarily supply an approximately sinusoidal voltage curve for the intermediate circuit voltage. - View Dependent Claims (9, 10)
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Specification