APPARATUS FOR HEATING BY ELECTROMAGNETIC INDUCTION, IN PARTICULAR INDUCTION HEATING OR INDUCTION FURNACE
First Claim
1. An apparatus for heating by electromagnetic induction, comprisinga first power supply arrangement (1) having an output with two terminals (11, 12),a second power supply arrangement (2) for providing an n-phase multi-phase AC voltage at n outputs, each output having two terminals (21, 22, 23), wherein the phase shift between the chained voltages (U12, U21) of the n-phase multi-phase AC voltage provided at an output side of the second power supply arrangement is 360°
- /n, and wherein n is a natural number greater than or equal to two,wherein the n outputs of the second power supply arrangement (2) form a chain, in that two terminals are assigned to n-2 outputs among the n outputs, which are also associated with another one of the outputs, and in that two outputs of the n outputs have only one terminal (22), which is also associated with another output, whereas the other terminals (21, 23) of these two outputs are associated with only one output and wherein these terminals (21, 23) form the beginning and the end of the chain,wherein one of the chained voltages (U12, U21) of the n-phase alternating current system is present at each output of the second current supply arrangement (2),the apparatus further comprisingat least n inductors (31, 32),wherein the inductors (31, 32) are connected in series to the output of the first power supply arrangement with respect to the first power supply arrangement (1), andwherein at least one respective inductor (31, 32) is connected to an output of the outputs of the second power supply arrangement.
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Accused Products
Abstract
An apparatus for heating by electromagnetic induction heating e.g., for heating silicon carbide, with a first power supply arrangement (1) having an output with two terminals (11, 12), with a second power supply arrangement (2) for providing an n-phase multi-phase AC voltage at n outputs, each output having two terminals (21, 22, 23). The phase shift between the chained voltages (U12, U21) of the n-phase multi-phase AC voltage provided at output side of second power supply arrangement is 360°/n. The n outputs of the second power supply arrangement (2) form a chain: two terminals are assigned to n-2 outputs, in two outputs of the n outputs have only one terminal (22), which is also associated with another output, whereas the other terminals (21, 23) of these two outputs are associated only with one output and wherein these terminals (21, 23) form the beginning and the end of the chain.
2 Citations
9 Claims
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1. An apparatus for heating by electromagnetic induction, comprising
a first power supply arrangement (1) having an output with two terminals (11, 12), a second power supply arrangement (2) for providing an n-phase multi-phase AC voltage at n outputs, each output having two terminals (21, 22, 23), wherein the phase shift between the chained voltages (U12, U21) of the n-phase multi-phase AC voltage provided at an output side of the second power supply arrangement is 360° - /n, and wherein n is a natural number greater than or equal to two,
wherein the n outputs of the second power supply arrangement (2) form a chain, in that two terminals are assigned to n-2 outputs among the n outputs, which are also associated with another one of the outputs, and in that two outputs of the n outputs have only one terminal (22), which is also associated with another output, whereas the other terminals (21, 23) of these two outputs are associated with only one output and wherein these terminals (21, 23) form the beginning and the end of the chain, wherein one of the chained voltages (U12, U21) of the n-phase alternating current system is present at each output of the second current supply arrangement (2), the apparatus further comprising at least n inductors (31, 32), wherein the inductors (31, 32) are connected in series to the output of the first power supply arrangement with respect to the first power supply arrangement (1), and wherein at least one respective inductor (31, 32) is connected to an output of the outputs of the second power supply arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- /n, and wherein n is a natural number greater than or equal to two,
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9. A method for heating silicon carbide by electromagnetic comprising the steps of
providing a first power supply arrangement (1) having an output with two terminals (11, 12), providing a second power supply arrangement (2) for providing an n-phase multi-phase AC voltage at n outputs, each output having two terminals (21, 22, 23), wherein the phase shift between the chained voltages (U12, U21) of the n-phase multi-phase AC voltage provided at an output side of the second power supply arrangement is 360° - /n, and wherein n is a natural number greater than or equal to two,
wherein the n outputs of the second power supply arrangement (2) form a chain, in that two terminals are assigned to n-2 outputs among the n outputs, which are also associated with another one of the outputs, and in that two outputs of the n outputs have only one terminal (22), which is also associated with another output, whereas the other terminals (21, 23) of these two outputs are associated with only one output and wherein these terminals (21, 23) form the beginning and the end of the chain, wherein one of the chained voltages (U12, U21) of the n-phase alternating current system is present at each output of the second current supply arrangement (2), providing at least n inductors (31, 32), wherein the inductors (31, 32) are connected in series to the output of the first power supply arrangement with respect to the first power supply arrangement (1), and wherein at least one respective inductor (31, 32) is connected to an output of the outputs of the second power supply arrangement.
- /n, and wherein n is a natural number greater than or equal to two,
Specification
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- Resources
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Current AssigneeAEG Power Solutions BV (3W Power Holdings Limited)
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Original AssigneeAEG Power Solutions BV (3W Power Holdings Limited)
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InventorsWallmeier, Peter
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Application NumberUS13/795,092Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current219/671CPC Class CodesH05B 6/067 for melting furnacesH05B 6/10 Induction heating apparatus...
