High frequency transformer with integrated rectifiers
OwnerMichel Rocheinventor
Life of this patent
Estimating the term…
Abstract
A high frequency transformer may include an integrated rectifier cell with flat windings and/or slotted copper segments stacked on a core branch to provide alternating primary and secondary windings. This reduces inductance leakage and thus increases the operating frequency of the transformer. Rectifying diodes of the rectifier cell may be arranged according to various configurations between the copper segments, and the collection plates may form one of the rectifier outputs. The other output may be provided by connecting all the midpoints of the windings with conductive spacers pressed together along a first axis. The invention is particularly advantageous in static converters, and, more particularly, in spot welding machines, for example.
Claims45
A transformer comprising:
- a magnetic core branch;
- at least one winding comprising a plurality of conductive segments surrounding said magnetic core branch;
- at least one respective rectification diode positioned between adjacent conductive segments;
- and
- a plurality of flat windings on said magnetic core branch stacked in alternating fashion with said conductive segments.
A transformer comprising:
- a magnetic core branch;
- at least one winding comprising a plurality of conductive segments surrounding said magnetic core branch;
- at least one respective integrated rectification diode positioned between adjacent conductive segments;
- a plurality of flat windings on said magnetic core branch stacked in alternating fashion with said conductive segments;
- and
- a compression device for compressing said integrated rectification diodes between respective conductive segments.
A static converter comprising:
- at least one input terminal and at least one output terminal;
- and
- a transformer connected between said at least one input terminal and said at least one output terminal and comprising
- a magnetic core branch,
- at least one winding comprising a plurality of conductive segments surrounding said magnetic core branch,
- at least one respective rectification diode positioned between adjacent conductive segments, and
- a plurality of flat windings on said magnetic core branch stacked in alternating fashion with said conductive segments.
A method for making a transformer comprising:
- positioning at least one winding comprising a plurality of conductive segments so that conductive segments surround a magnetic core branch;
- positioning at least one respective rectification diode between adjacent conductive segments;
- and
- stacking a plurality of flat windings on the magnetic core branch in alternating fashion with the conductive segments.
Dependencies are inferred from the claim text.