Single switch inverter
AssigneeSuntec Enterprises
InventorJianping Fan
Life of this patent
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Abstract
A novel concept of converting a DC input to an AC output with a single active switch is disclosed. A series of topologies are developed to support the needs of different applications. Particular requirements for driving modern lighting devices are also addressed and supporting solutions are elaborated.
Claims9
A boost inverter circuit comprised at least by an inductor, an electronic power switch, a coupling capacitor, a DC input, and a load, one side of the said inductor is connected to the first terminal of the said DC input, and the other side of the inductor is connected to the first power switching terminal of the said electronic power switch, the second power switching terminal of the electronic power switch is connected to the second terminal of the said DC input, the said coupling capacitor is connected in series with the said load and such serial capacitor-load circuit is connected in parallel to the electronic power switch, the load is a bi-directional type that allows current flowing through it in both directions, the on and off switching operation of the power switch generates an AC voltage across the load and an AC current flowing through the load.
A buck-boost inverter circuit comprised at least by an electronic power switch, an inductor, a coupling capacitor, a DC input, and a load, the first power switching terminal of the said electronic power switch is connected to the first terminal of the said DC input, and the second power switching terminal of the electronic power switch is connected to one side of the said inductor, the other side of the inductor is connected to the second terminal of the said DC input, the said coupling capacitor is connected in series with the said load and such serial capacitor-load circuit is connected in parallel to the inductor, the load is a bi-directional type that allows current flowing through it in both directions, the on and off switching operation of the power switch generates an AC voltage across the load and an AC current flowing through the load.
An isolated buck-boost inverter circuit comprised at least by a transformer, an electronic power switch, a coupling capacitor, a DC input, and a load, the said transformer has at least one primary winding and one secondary winding, the first terminal of the primary winding of the transformer is connected to the first terminal of the said DC input, and the second terminal of the primary winding is connected to the first power switching terminal of the said electronic power switch, the second power switching terminal of the electronic power switch is connected to the second terminal of the said DC input, the said coupling capacitor is connected in series with the said load and such serial capacitor-load circuit is connected in parallel to the two terminals of the secondary winding of the transformer, the load is a bi-directional type that allows current flowing through it in both directions, the on and off switching operation of the power switch generates an AC voltage across the load and an AC current flowing through the load.
Dependencies are inferred from the claim text.