MAGNETIC STRUCTURE COMBINING NORMAL MODE AND COMMON MODE INDUCTANCE
First Claim
1. A wind turbine power system, comprising:
- a wind driven generator configured to generate AC power;
a power converter coupled to the generator, the power converter comprising a first converter configured to convert AC power to DC power, a second converter configured to convert DC power to AC power, and a DC bus coupled between the first converter and the second converter; and
a magnetic component, the magnetic component comprising a core having a plurality of legs, the plurality of legs comprising a first leg, a second leg, and a third leg, each of the plurality of legs configured to provide a flux path in the core;
wherein the magnetic component comprises;
at least one common mode winding, the at least one common mode winding disposed about the first leg, the at least one common mode winding configured to provide a common mode inductance for the power system; and
at least one normal mode winding, the at least one normal mode winding disposed about the second leg, the normal mode winding configured to provide a normal mode inductance for the power system, the at least one common mode winding coupled between the at least one normal mode winding and a DC output of the magnetic component.
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Accused Products
Abstract
Magnetic components that can be used to provide normal mode and common mode inductance in a power system, such as a wind-driven doubly fed induction generator system, are provided. The magnetic components can include a structure that combines both normal mode inductors and common mode inductors on a common core. In particular, the magnetic components can include specific winding and core arrangements which couple a common mode inductor and a normal mode inductor onto a single core with at least three legs. The structure of the magnetic components can be smaller in size, can have lower weight, and can have a lower cost than typical solutions to providing common mode and normal mode inductance in a power system.
25 Citations
22 Claims
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1. A wind turbine power system, comprising:
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a wind driven generator configured to generate AC power; a power converter coupled to the generator, the power converter comprising a first converter configured to convert AC power to DC power, a second converter configured to convert DC power to AC power, and a DC bus coupled between the first converter and the second converter; and a magnetic component, the magnetic component comprising a core having a plurality of legs, the plurality of legs comprising a first leg, a second leg, and a third leg, each of the plurality of legs configured to provide a flux path in the core; wherein the magnetic component comprises; at least one common mode winding, the at least one common mode winding disposed about the first leg, the at least one common mode winding configured to provide a common mode inductance for the power system; and at least one normal mode winding, the at least one normal mode winding disposed about the second leg, the normal mode winding configured to provide a normal mode inductance for the power system, the at least one common mode winding coupled between the at least one normal mode winding and a DC output of the magnetic component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 22)
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17. A magnetic component for providing common mode and normal mode inductance in a power system, comprising:
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a core having a plurality of legs, the plurality of legs comprising a first leg, a second leg, and a third leg, each of the plurality of legs configured to provide a flux path in the core; at least one common mode winding, the at least one common mode winding disposed about the first leg, the at least one common mode winding configured to provide a common mode inductance for the power system; and at least one normal mode winding, the at least one normal mode winding disposed about the second leg, the normal mode winding configured to provide a normal mode inductance for the power system, the at least one common mode winding coupled between the at least one normal mode winding and a DC output of the magnetic component. - View Dependent Claims (20, 21)
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Specification