Em Microelectronic-marin Sa

Frako, Kondensatoren-und Apparatebau Gmbh

Siegfried Kern

Daniel N Luthi

Steffen Schmid

Jean-Noel Divoux

Jean-Noël Divoux

Ray Ridley

Otmar Glaser

Daniel LÜTHI

The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on the primary side, the primary part of the converter being associated with a control circuit also arranged on the primary side and controlling the electrical energy flowing in the primary power path of the primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in the primary power path, the power supply unit entering a very low power mode ('Power-down' mode) when the first control signal is set to OFF so that the converter is not supplied anymore. The power management unit is arranged such that, in the very low power mode, it can receive or generate at least a wake-up signal and set to ON the first control signal in response to the wake-up signal for supplying again the primary and secondary parts of the converter.

Power supply unit having a voltage converter

The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on said primary side, the primary part of the converter being associated with a control circuit also arranged on said primary side and controlling the electrical energy flowing in the primary power path of said primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in said primary power path, said power supply unit entering a very low power mode ('Power-down' mode) when said first control signal is set to OFF so that the converter is not supplied anymore. The power management unit is arranged such that, in said very low power mode, it can receive or generate at least a wake-up signal and set to ON said first control signal in response to said wake-up signal for supplying again said primary and secondary parts of the converter.

An AC/DC converter is provided for connecting to conductors of a multi-phased alternating current generator or network, which is built redundantly for protection against a total loss and which loads the AC generator essentially without non-linear distortion and where several power factor correction circuits, arranged in parallel with one another, are provided. A number of rectifier circuits are included which are independent of each other and equal to the number of phases of the generator. Each rectifier circuit has six rectifier elements which are connected in pairs to terminals of the generator and, by the formation of bridges, are commonly connected to the output conductors of the rectifier circuits. Each rectifier circuit is connected to a one phase power correction circuit. At least one switch is provided for each rectifier circuit. The switch or switches are associated with at least one pair of rectifier elements and are used to always separate associated pairs of rectifier elements from the conductors associated with the generator. Sensors are included for the functional control of the phases of the generator and the one phase power factor circuits. A switch control logic circuit is connected through conductors with the sensors and which, based on the signals from the sensors, closes or opens the switches of the rectifier circuits.

AC/DC converter

A method and circuit arrangement for measuring in-phase current and quadrature current in an electrical alternating current power supply is disclosed. The invention uses a microprocessor whereby four integral values A.sub.1 through A.sub.4 are combined in such as to allow determination of the in-phase current and the quadrature current. The invention is useful in recording in-phase and quadrature components of current from an alternating current power supply.

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Freiamt, Germany

Siegfried Kern