SOFT-SWITCHING HIGH VOLTAGE POWER CONVERTER
First Claim
1. A charge transfer apparatus for transferring an electric charge between an input power terminal and a galvanically isolated output power terminal comprising:
- a transformer including a plurality of primary windings and a plurality of galvanically isolated secondary windings;
a first plurality of resonant converters having input terminals connected in series to the input power terminal and having output terminals connected to different primary windings of the plurality of primary windings;
a second plurality of resonant converters having input terminals connected to different secondary windings of the plurality of secondary windings and having output terminals connected to the galvanically isolated power terminal;
a control system for controlling the transfer of electric charge between the input power terminal and the galvanically isolated output power terminal including controlling a first plurality of switches of the first plurality of resonant converters and a second plurality of switches of the second plurality of resonant converters in a zero current soft switching mode.
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Accused Products
Abstract
In a general aspect, a charge transfer includes a transformer including a plurality of primary windings and a plurality of galvanically isolated secondary windings, a first plurality of resonant converters having input terminals connected in series to an input power terminal and having output terminals connected to different primary windings of the plurality of primary windings, a second plurality of resonant converters having input terminals connected to different secondary windings of the plurality of secondary windings and having output terminals connected to a galvanically isolated power terminal, and a control system for controlling a transfer of electric charge between the input power terminal and the galvanically isolated output power terminal including controlling a first plurality of switches of the first plurality of resonant converters and a second plurality of switches of the second plurality of resonant converters in a zero current soft switching mode.
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Citations
17 Claims
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1. A charge transfer apparatus for transferring an electric charge between an input power terminal and a galvanically isolated output power terminal comprising:
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a transformer including a plurality of primary windings and a plurality of galvanically isolated secondary windings; a first plurality of resonant converters having input terminals connected in series to the input power terminal and having output terminals connected to different primary windings of the plurality of primary windings; a second plurality of resonant converters having input terminals connected to different secondary windings of the plurality of secondary windings and having output terminals connected to the galvanically isolated power terminal; a control system for controlling the transfer of electric charge between the input power terminal and the galvanically isolated output power terminal including controlling a first plurality of switches of the first plurality of resonant converters and a second plurality of switches of the second plurality of resonant converters in a zero current soft switching mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An n phase charge transfer apparatus including:
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n charge transfer apparatuses connected to an AC grid, each charge transfer apparatus of the n charge transfer apparatuses including; a transformer including a plurality of primary windings and a plurality of galvanically isolated secondary windings; a first plurality of resonant converters having input terminals connected in series to the input power terminal and having output terminals connected to different primary windings of the plurality of primary windings; a second plurality of resonant converters having input terminals connected to different secondary windings of the plurality of secondary windings and having output terminals connected to the galvanically isolated power terminal; a control system for controlling the transfer of electric charge between the input power terminal and the galvanically isolated output power terminal including controlling a first plurality of switches of the first plurality of resonant converters and a second plurality of switches of the second plurality of resonant converters in a zero current soft switching mode; wherein a smallest difference in phase angle of operation between the n charge transfer apparatuses is 360 degrees/n and the control systems of each of the n charge transfer apparatuses are configured to coordinate the n charge transfer apparatuses to operate as an n phase charge transfer apparatus. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification