Protection for redundancy of isolated inverter blocks
First Claim
1. A power converter system, the power converter, comprising:
- a plurality of inverter blocks, each inverter block comprising a plurality of conversion entities, each conversion entity having a plurality of bridge circuits, each bridge circuit comprising a plurality of semiconductor switching elements coupled in series, wherein the plurality of conversion entities comprise a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power, wherein an isolation transformer is coupled between the first conversion entity and the second conversion entity;
an inverter block switching element coupled to an output of each inverter block;
at least one protection element disposed in each inverter block;
one or more control devices configured to isolate at least one of the plurality of inverter blocks based at least in part on a status of the at least one protection element disposed in the inverter block.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for protecting the redundancy of inverter blocks are provided. In one example implementation, a system can include a plurality of inverter blocks. Each inverter block can include a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power. An isolation transformer can be coupled between the first conversion entity and the second conversion entity. The system includes an inverter block switching element coupled to an output of each inverter block. A protection element is disposed in each inverter block. The system includes one or more control devices configured to isolate at least one of the plurality of inverter blocks based at least in part on a status of the protection element disposed in the inverter block.
-
Citations
20 Claims
-
1. A power converter system, the power converter, comprising:
-
a plurality of inverter blocks, each inverter block comprising a plurality of conversion entities, each conversion entity having a plurality of bridge circuits, each bridge circuit comprising a plurality of semiconductor switching elements coupled in series, wherein the plurality of conversion entities comprise a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power, wherein an isolation transformer is coupled between the first conversion entity and the second conversion entity; an inverter block switching element coupled to an output of each inverter block; at least one protection element disposed in each inverter block; one or more control devices configured to isolate at least one of the plurality of inverter blocks based at least in part on a status of the at least one protection element disposed in the inverter block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method for isolating an inverter block in a power converter system, the power converter system comprising a plurality of inverter blocks, each inverter block comprising a plurality of conversion entities, each conversion entity having a plurality of bridge circuits, each bridge circuit comprising a plurality of silicon carbide MOSFET switching elements coupled in series, wherein the plurality of conversion entities comprise a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power, wherein an isolation transformer is coupled between the first conversion entity and the second conversion entity, the method comprising:
-
obtaining, by one or more control devices, a signal from a one or more sensors associated with a protection element disposed in the inverter block; determining, by the one or more control devices, a status of the protection element based at least in part on the signal from the one or more sensors; controlling an inverter block switching element to isolate one of the plurality of inverter blocks based at least in part on the status of the protection element. - View Dependent Claims (17, 18, 19)
-
-
20. A wind driven generator system, the system comprising:
-
a wind driven generator; a power converter comprising; a plurality of inverter blocks, each inverter block comprising a plurality of conversion entities, each conversion entity having a plurality of bridge circuits, each bridge circuit comprising a plurality of semiconductor switching elements coupled in series, wherein the plurality of conversion entities comprise a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power, wherein an isolation transformer is coupled between the first conversion entity and the second conversion entity; an inverter block switching element coupled to an output of each inverter block; at least one fuse disposed in each inverter block; one or more control devices configured to isolate at least one of the plurality of inverter blocks using the inverter block switching element associated with the at least one inverter block based at least in part on a status of the at least one fuse disposed in the inverter block.
-
Specification