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8183850 |
Power converting device and power supply apparatus
Each voltage converting unit outputs a first signal at a first output and second signal at a second output. Each first transforming unit includes a magnetically coupled primary and secondary coil,...
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7813147 |
AC/DC converter for aeronautics
The invention relates to the electrical power supply of aircraft and notably of large commercial aircraft. According to the invention, the aircraft is equipped with an AC-DC converter that...
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7772953 |
Symmetrical auto transformer delta topologies
Various embodiments of multi-phase transformers are disclosed. Exemplary transformer includes primary windings, secondary windings and third windings. Primary windings, secondary windings and third...
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7719858 |
Fifteen-phase autotransformer
A polygon connected three-phase autotransformer using nine windings per phase provides a reduced power rating fifteen-phase power source suitable for 30-pulse AC to DC power converters. The...
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7352594 |
Stage for rectifying a three-phase current
The rectification stage (18) having: an autotransformer (40) for twelve-phase rectification;two rectifiers (50A, 50B) each of which is connected at the input to three separate phases of the...
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7277302 |
12-pulse converter including a filter choke incorporated in the rectifier
The invention provides a 12-pulse converter comprising an autotransformer having a primary winding connected in a delta configuration and two secondary windings connected in star configurations,...
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6269009 |
Compact polyphase electrical power converter having a single ferromagnetic core
A polyphase generator for medical diathermy apparatus comprises a ferromagnetic ring core bearing two primary windings each of which has two winding portions positioned diametrically opposite one...
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6249443 |
Nine-phase transformer
The invention includes a transformer for converting three-phase AC power to nine-phase AC power. An autotransformer includes three coils, each coil including a plurality of serial windings that...
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5671127 |
DC power supply device with high voltage and large power handling capability
Three-phase alternating-current electric energy supplied from a primary power supply is supplied to first and second six-phase transformer-coupled rectifying circuits which are connected in cascade...
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5455759 |
Symmetrical, phase-shifting, fork transformer
In 12-pulse and 18-pulse AC/DC converter systems a single wye connected auto transformer using appropriate segments of voltage from each phase connected in fork fashion is used to develop 6-phase...
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5148357 |
Auto-connected hexagon transformer for a 12-pulse converter
A 12-pulse converter of lower rating and minimal current harmonics is obtained with an auto-connected regular hexagon transformer including a delta winding in its center.
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5068774 |
24-pulse hexagon-type AC/DC static converter
An AC/DC or DC/AC converter includes a single hexagon transformer with each side connected to opposite polarity DC terminals through two pairs of SCR devices gated in sequence synchronously with...
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4876634 |
Multi-pulse converter system
In a multiphase AC/DC converter system a single transformer is used having phase shifted tappings drawn from a polygonal succession of long and short windings wherein some of the windings carry...
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4833583 |
Electric supply device for an ozonizer
Device for supplying power from a three-phase network to an ozonizer comprising at least two discharge elements (3, 4) having a capacitive character, and comprising two single-phase step-up...
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4831352 |
Rectifier transformer
A rectifier transformer for supplying a predetermined alternating current to a rectifier includes: a transformer having secondary windings (cell windings) connected in a double star in such a...
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4683527 |
AC/DC or DC/AC converter system with outboard commutation inductors
In a 12-pulse AC/DC converter of the hexagon type the rectifier switches are distributed in three groups for each polarity and for each polarity three coils are joined to the common pole and...
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4498127 |
Static converter with electric valves comprising a twelve-phase connection with two Graetz bridges for the suppression of harmonics 5 and 7 of network current
There is disclosed an alternating current to direct current static converter which includes a three-phase transformer interconnected with two rectifier bridges to produce a twelve-phase connection...
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4255784 |
Transformer-rectifier apparatus
A three-phase transformer having a delta-connected primary and two identical secondary windings per phase connected in hexagon, has symmetrical taps on each secondary winding connected to...
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3585484 |
AXIAL AMPERE-TURN BALANCING IN MULTIPLE, SEGREGATED SECONDARY WINDING TRANSFORMERS
A tertiary winding is provided for a multisecondary transformer wherein the tertiary winding has axially separated parallel connected sections which are disposed adjacent respective axially...
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3535617 |
POWER SOURCE INCLUDING ALTERNATING CURRENT TRANSFORMER HAVING OUTPUT VOLTAGE ADJUSTABLE IN SMALL INCREMENTS
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3513377 |
INDIVIDUAL INTERPHASE TRANSFORMERS
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3447062 |
POLYPHASE BOOSTER CONTROLLED BATTERY CHARGER WITH REDUCED TELEPHONE INTERFERENCE
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3308368 |
Six-phase rectifier wherein the input even harmonics are eliminated
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3168692 |
Static inverter
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3083329 |
Apparatus for operation of converters with suction chokes
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3036258 |
Electric power translation system
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3026467 |
Electric power translation system
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3021471 |
Direct voltage system comporising static converters interconnected through inter-phase transformers
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2986691 |
Electric power translation system
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2958817 |
Rectifier circuit
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2825022 |
Triple-diametric rectifier-connections
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