Interface for supplying power to a load from an electrical power supply network
The power supply interface ( 10 ) includes a rectification stage ( 18 ), having an autotransformer ( 40 ) connected to a power supply network ( 12 ), and a signal conditioning stage ( 20 ) having an output ( 28 ) supplying power to a load ( 14 ). The conditioning stage ( 20 ) includes a power module ( 22 ), for conditioning the power supply signal, and a control module ( 24 ) designed to control the power module ( 22 ). An autotransformer ( 40 ) includes at least one additional winding ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C) connected to the control module ( 24 ) to supply it with electrical power, the or each additional winding being magnetically coupled to at least one primary winding ( 44 A, 44 B, 44 C) of the autotransformer ( 40 ). The power is supplied to a motor in an airplane.
1. An interface ( 10 ) for supplying power to a load ( 14 ) from an electrical power supply network ( 12 ) comprising:
a rectification stage ( 18 ) comprising an autotransformer ( 40 ) equipped with at least one primary winding ( 44 A, 44 B, 44 C) designed to be connected to the power supply network ( 12 ); and
a power supply signal conditioning stage ( 20 ) having an output ( 28 ) supplying power to the load ( 14 ), which power supply signal conditioning stage ( 20 ) includes a power module ( 22 ) for conditioning the power supply signal connected at the output of the rectification stage ( 18 ) and a control module ( 24 ) designed to control the power module ( 22 ),
wherein the autotransformer ( 40 ) includes at least one additional winding ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C) connected to the control module ( 24 ) to supply it with electrical power, the at least one additional winding ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C) being magnetically coupled to at least one primary winding ( 44 A, 44 B, 44 C) of the autotransformer ( 40 ).
2. The power supply interface as claimed in claim 1 , wherein the autotransformer ( 40 ) is a polyphase transformer, and wherein it includes at least one additional winding ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C) provided for each phase of the transformer.
3. The power supply interface as claimed in claim 2 , wherein the autotransformer is a transformer with six-phase output ( 40 ).
4. The power supply interface as claimed in claim 1 , wherein the control module ( 24 ) includes a signal shaping module ( 32 ) connected to the at least one additional winding ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C).
5. The power supply interface as claimed in claim 1 , wherein the autotransformer ( 40 ) includes at least two additional windings ( 62 A, 62 B, 62 C; 64 A, 64 B, 64 C) having different numbers of turns designed to supply power to the control module ( 24 ) at two distinct voltages.
6. A transportation engine including an electrical power supply network ( 12 ) and at least one load ( 14 ) connected to the electrical power supply network ( 12 ) via a power supply interface as claimed in claim 1 .