Inverter circuit and method for operating the inverter circuit
AssigneeSiemens Aktiengesellschaft
InventorJalal Hallak
Life of this patent
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Abstract
An inverter circuit having a primary circuit with a first choke for periodically connecting a primary winding to a DC voltage present at an input of the inverter circuit, a secondary circuit with a secondary winding, the secondary winding arranged in series with a first capacitor and connected via a full bridge consisting of four switching elements to a AC voltage present at an output of the inverter circuit via a second choke, and a transformer, wherein the primary circuit and the secondary circuit are electrically isolated by the transformer.
Claims20
An inverter circuit, comprising:
- a primary circuit having a first choke for periodically connecting a primary winding to a DC voltage present at an input of the inverter circuit;
- a secondary circuit having a secondary winding, the secondary winding arranged in series with a first capacitor and connected via a full bridge consisting of four switching elements to a AC voltage present at an output of the inverter circuit via a second choke;
- and
- a transformer, wherein the primary circuit and the secondary circuit are electrically isolated by the transformer.
A method for operating an inverter circuit, wherein the inverter circuit has a primary circuit with a first choke for periodically connecting a primary winding to a DC voltage present at an input of the inverter circuit, a secondary circuit with a secondary winding, the secondary winding arranged in series with a first capacitor and connected via a full bridge consisting of four switching elements to a AC voltage present at an output of the inverter circuit via a second choke, and a transformer, wherein the primary circuit and the secondary circuit are electrically isolated by the transformer, comprising:
- opening a first switching element during a positive AC voltage half-cycle;
- closing a second and a fourth switching element;
- and
- switching a third switching element inversely to a switching mode of a primary circuit.
A method for operating an inverter circuit, wherein the inverter circuit has a primary circuit with a first choke for periodically connecting a primary winding to a DC voltage present at an input of the inverter circuit, a secondary circuit with a secondary winding, the secondary winding arranged in series with a first capacitor and connected via a full bridge consisting of four switching elements to a AC voltage present at an output of the inverter circuit via a second choke, and a transformer, wherein the primary circuit and the secondary circuit are electrically isolated by the transformer, comprising:
- opening a fourth switching element during a negative AC voltage half-cycle;
- closing a first and a third switching element;
- and
- switching a second switching element inversely to the switching mode of the primary circuit.
Dependencies are inferred from the claim text.