Hydro-quebec

Citeq

Novelorg Inc.

Citeo

Pierre Pelletier

Jacques Brochu

Gaston Morin

Francedillaois Beauregard

Mathieu Bouchard

André Chénier

Stéphan Boivin

Gerald Roberge

Momcilo Gavrilovic

Stephan Boivin

Andre Chenier

The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provides for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Proportional electromagnet actuator and control system

The invention provides an actuator for actuating a pallet of a pipe organ under the command of a key of an organ. The actuator comprises a movable member, adapted to be connected to the pallet of the organ pipe and a magnetic plunger, mounted on the movable member. It also comprises an electromagnet having a gap within which the magnetic plunger can be inserted and moved, wherein the electromagnet when energized moves the member to thereby actuate the pallet. A controller roller unit controls a current in the electromagnet to provide a controlled actuation of the pallet that is proportional to a key dip of the key. It also provide for a system based on a digital serial link for controlling an assembly of organ pallets that are actuated by electromagnets.

Methods of enhancing capacity of transformer equipment and of power flow

Method for interconnecting two synchronous polyphase AC networks and

Method of phase-shifting voltages applied to susceptances

The present disclosure describes a method and a system for interconnecting a first and a second three-phase alternating electric networks. The system comprises a first transformer having secondary windings for producing a first and a second secondary three-phase voltages, each phase of the first secondary voltage being out of phase with respect to one of the phases of the second three-phase voltage by a first angle; a second transformer having secondary windings for producing a third and a fourth secondary, three-phase voltages, each phase of the third secondary voltage being out of phase with respect to one of the phases of said fourth voltage by a second angle different from said first angle; a plurality of variable reactive impedances for establishing between each phase of the first and second voltages and two phases of said third and fourth voltages, two single-phase interconnections of variable susceptances, respectively; and a regulator for operating the variable reactive impedances to vary the susceptances of the interconnections so as to establish a desired transfer of electric active power from one of the first and second networks to the other network while maintaining at a desired level an electric reactive power engaged in said transfer of active power.

Method and system for interconnecting in quadrature two synchronous or

A method and a system for interconnecting two electrical, alternating three phase networks operating asynchronously or synchronously at voltages of equal or adjacent frequencies, and in which, for corresponding phases, the voltages of the first and second networks are out of phase by a constant or varying angle. A plurality of three phase variable reactive impedances interconnect the two networks for carrying out a desired transfer of active power from one of the two networks to the other. The variable impedances are operated to establish between each phase of the first network and the three phases of the second network, three interconnections each having a different susceptance, which susceptances vary with the three phase variable reactive impedances. A regulator measures electrical parameters associated with at least one corresponding phase of the first and second networks, and operates the three phase variable reactive impedances to vary the susceptances of the interconnections in relation with the measured parameters so as to establish the desired transfer of active power from one of the first and second networks to the other network, while maintaining at a desired level a reactive power engaged in the transfer of active power.

Method and system for interconnecting two synchronous or asynchronous

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Boucherville, Canada

Pierre Pelletier