Abb Technology Ag

Abb Research Ltd.

Abb Technology Ltd

Abb Schweiz Ag

Filippo Chimento

Staffan Norrga

Tomas Lars Jonsson

Jean-Philippe Hasler

Jan Svensson

Frans Dijkhuizen

Falah Hosini

Peter Lundberg

Mauro Monge

Fredrik Tinglow

Willy Hermansson

Ola Jeppsson

Åke Öberg

Liwei Wang

Jian Qin

Fredrik Tinglöw

A mechanical switch in the form of a bypass switch assembly is arranged between two electrical conductors (busbars) and stays open during normal operation. When a cell fault happens, the fault and bypass information is transmitted to an actuator (acting as a trigger circuit) which activates inter alia a gas generator producing huge volume of gas in a very short time. The gas pressure pushes a movable member to bridge the two electrical conductors with ultrafast speed.

Bypass switch assembly

A gate control circuit including: a gate input arranged to receive an input gate feed signal; a gate output arranged to be connected, during normal operation, to at least one switching module for controlling current through a main circuit, the gate output being connected to the gate input; a power supply; and a switch connected between the power supply and the gate output, the switch being arranged to close as a response to a failure. A corresponding power module and method are also presented.

Gate control circuit, power module and associated method

Voltage source converter based on a chain-link cell topology including one or more phases, each of the phases having one or more series-connected chain-link cell modules connected to each other. The output voltage of the voltage source converter is controlled by control signals applied to the series-connected chain-link cell modules. In case of failure of a chain-link cell module, that module is controlled, by the control signals, such that zero output voltage is provided at its output voltage AC terminal.

Modular voltage source converter

An arrangement to determine a cell capacitor voltage value of a cell of a multi-cell power converter includes the cell and a control unit. The cell itself includes four power electronic valves interconnected as a full-bridge converter having a first and a second phase leg, where each phase leg includes a series-connection of two of the four power electronic valves and where the connection point between the two power electronic valves of each phase leg is externally connectable, a cell capacitor being connected in parallel to the first and the second phase legs, and four gate units, each being connected to a corresponding one of the power electronic valves as well as to the control unit.

Method and arrangement to determine the cell capacitor voltage of a cell of a multi-cell power converter

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Västerås, Sweden

Filippo Chimento