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53results about "Protective switches using micromechanics" patented technology
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Electromechanical switching circuitry in parallel with solid state switching circuitry selectively switchable to carry a load appropriate to such circuitry
ActiveUS7643256B2Electrostatic/electro-adhesion relaysElectric switchesOperational capabilitiesElectrical and Electronics engineering
A switching system is provided. The switching system includes electromechanical switching circuitry, such as a micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.
Owner:GENERAL ELECTRIC CO
System with circuitry for suppressing arc formation in micro-electromechanical system based switch
ActiveUS20080164961A1Electrostatic/electro-adhesion relaysSwitch operated by excess voltageOver current protectionVoltage
A system that includes micro-electromechanical system switching circuitry is provided. The system may include a first over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a voltage level across contacts of the micro-electromechanical system switching circuitry during a first switching event, such as a turn-on event. The system may further include a second over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a current flow through the contacts of the micro-electromechanical system switching circuitry during a second switching event, such as a turn-off event.
Owner:GENERAL ELECTRIC CO
Micro-Electromechanical System Based Electric Motor Starter
ActiveUS20080165457A1Suppress arc formationDynamo-electric motors/converters startersElectric motor controlElectric machineEngineering
A motor starter is provided. The motor starter includes micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current from a motor connected to the motor starter. The switching may be performed between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.
Owner:ABB (SCHWEIZ) AG
Micro-electromechanical system based arc-less switching
InactiveUS20070139829A1Enhanced inhibitory effectElectrostatic/electro-adhesion relaysElectric switchesEngineeringElectrical and Electronics engineering
A system is presented. The system includes a first micro-electromechanical system switch. Further, the system includes arc suppression circuitry coupled to the first micro-electromechanical system switch, wherein the arc suppression circuitry comprises a balanced diode bridge and is configured to facilitate suppression of an arc formation between contacts of the first micro-electromechanical system switch.
Owner:GENERAL ELECTRIC CO
Micro-electromechanical system based soft switching
ActiveUS20070139830A1Emergency protective arrangements for automatic disconnectionProtective switches using micromechanicsSoft switchingControl circuit
A system is presented. The system includes detection circuitry configured to detect occurrence of a zero crossing of an alternating source voltage or an alternating load current. The system also includes switching circuitry coupled to the detection circuitry and comprising a micro-electromechanical system switch. Additionally, the system includes control circuitry coupled to the detection circuitry and the switching circuitry and configured to perform arc-less switching of the micro-electromechanical system switch responsive to a detected zero crossing of an alternating source voltage or alternating load current.
Owner:GENERAL ELECTRIC CO
Circuit System With Supply Voltage For Driving An Electromechanical Switch
InactiveUS20080211347A1Sufficient voltagePiezoelectric/electrostriction/magnetostriction machinesElectrostatic/electro-adhesion relaysLow voltageEngineering
A circuit for controlling operation of a load. In one example, a MEMS switch is positioned in the circuit to place the load in one of a conducting state or a nonconducting state. A piezoelectric transformer provides a relatively high voltage output signal or a relatively low voltage output signal to control movement of the switch between a closed position, placing the load in the conducting state, and an open position. The high voltage output signal includes a frequency component in the resonant frequency range of the transformer. Control circuitry provides an input voltage signal to the piezoelectric transformer to provide the high voltage output signal or the low voltage output signal at the output terminals of the piezoelectric transformer.
Owner:GENERAL ELECTRIC CO
Micro-Electromechanical System Based Arc-Less Switching With Circuitry For Absorbing Electrical Energy During A Fault Condition
ActiveUS20070139831A1Suppress arc formationTransistorElectrostatic/electro-adhesion relaysElectric energyEnergy analysis
A system is presented. The system includes a micro-electromechanical system switch. Further, the system includes a balanced diode bridge configured to suppress arc formation between contacts of the micro-electromechanical system switch. A pulse circuit is coupled to the balanced diode bridge to form a pulse signal in response to a fault condition. An energy-absorbing circuitry is coupled in a parallel circuit with the pulse circuit and is adapted to absorb electrical energy resulting from the fault condition without affecting a pulse signal formation by the pulse circuit.
Owner:GENERAL ELECTRIC CO
MEMS micro-switch array based current limiting arc-flash eliminator
InactiveUS20080310058A1Prevent voltageElectrostatic/electro-adhesion relaysElectric switchesArc flashCurrent limiting
The present invention comprises MEMS enabled apparatus for the detection of arc-faults and the elimination of arc-flash conditions. The apparatus comprises an arc-flash detection component and a current limiting component. The current limiting component comprises a logic circuit in communication with the user interface, an MEMS protection circuit in communication with the logic circuit, and a switching circuit in communication with the MEMS protection circuit. The switching circuit comprises a plurality of micro-electromechanical system switching devices and a voltage limiting device, wherein the voltage limiting device is configured to prevent an over voltage event during a current limiting operation.
Owner:GENERAL ELECTRIC CO
Micro-electromechanical system based switching
ActiveUS20090115255A1Avoid hard activationBoards/switchyards circuit arrangementsElectrostatic/electro-adhesion relaysEngineeringControl circuit
A current control device is disclosed. The current control device includes control circuitry integrally arranged with a current path and at least one micro electromechanical system (MEMS) switch pair disposed in the current path. The current control device further includes a hybrid arcless limiting technology (HALT) circuit connected in parallel with the at least one MEMS switch pair facilitating the opening of the at least one MEMS switch pair.
Owner:GENERAL ELECTRIC CO
Digital wireless network receptacle
InactiveUS20130184890A1Power on safelyEfficient integrationParameter calibration/settingLevel controlMicrocontrollerEngineering
A digital wireless network receptacle has an upper housing, two power sockets formed through the upper housing, a lower housing and a multi-layer mechanism mounted between the upper housing and the lower housing. A single microcontroller unit (MCU) is employed within the multi-layer mechanism so that an intelligent control circuit can be effectively integrated and received in the receptacle with standardized size and limited space. Each power socket of the receptacle is independently monitored and controlled, and power consumed from each power socket can be recorded to ensure a complete understanding of power usage. Besides transmission of power consumption information to a host server through a wireless network, automatic power breaking safety protection upon an overload or standby condition of electrical appliances can be provided.
Owner:TING ROY +2
Micro-electromechanical system based electric motor starter
ActiveUS7542250B2Dynamo-electric motors/converters startersElectric motor controlElectric machineEngineering
A motor starter is provided. The motor starter includes micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current from a motor connected to the motor starter. The switching may be performed between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.
Owner:ABB (SCHWEIZ) AG
Micro-electromechanical system based switching
ActiveUS8144445B2Facilitate interruptionCircuit-breaking switches for excess currentsElectrostatic/electro-adhesion relaysEngineeringControl circuit
A current control device is disclosed. The current control device includes control circuitry and a current path integrally arranged with the control circuitry. The current path includes a set of conduction interfaces and a micro electromechanical system (MEMS) switch disposed between the set of conduction interfaces. The set of conduction interfaces have geometry of a defined fuse terminal geometry and include a first interface disposed at one end of the current path and a second interface disposed at an opposite end of the current path. The MEMS switch is responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path.
Owner:ABB (SCHWEIZ) AG
MEMS based motor starter with motor failure detection
ActiveUS7589942B2DC motor speed/torque controlEmergency protective arrangements for automatic disconnectionEngineeringControl circuit
A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor algorithm residing on the processor, the at least one processor algorithm containing instructions to monitor characteristics of current on the at least one current path and to provide data pertaining to a condition of the at least one current path. The motor starter further includes a micro electromechanical system (MEMS) switch disposed on the at least one current path, the MEMS switch responsive to the control circuitry to facilitate the control of an electrical current, passing through the at least one current path.
Owner:ABB (SCHWEIZ) AG
Method and device for preventing damage to a semiconductor switch circuit during a failure
InactiveUS20090161277A1Avoid damageSolid-state devicesEmergency protective arrangements for automatic disconnectionSwitched currentEngineering
A device includes at least one semiconductor switching circuit connected to a power source and a load and at least one breaker switch integrated with the at least one semiconductor switching circuit. The breaker circuit may be connected in series with the at least one semiconductor switching circuit and the at least one breaker switch is configured to create an open circuit in less than about twenty microseconds of receipt of a predetermined threshold of semiconductor switch current to thereby prevent damage to the at least one semiconductor switching circuit or housing. A method of preventing damage to a semiconductor switching circuit or device is also presented.
Owner:GENERAL ELECTRIC CO
MEMS based motor starter with motor failure detection
ActiveUS20080310057A1DC motor speed/torque controlEmergency protective arrangements for automatic disconnectionControl circuitElectrical current
A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor algorithm residing on the processor, the at least one processor algorithm containing instructions to monitor characteristics of current on the at least one current path and to provide data pertaining to a condition of the at least one current path. The motor starter further includes a micro electromechanical system (MEMS) switch disposed on the at least one current path, the MEMS switch responsive to the control circuitry to facilitate the control of an electrical current, passing through the at least one current path.
Owner:ABB (SCHWEIZ) AG
Micro-electromechanical system based switching module serially stackable with other such modules to meet a voltage rating
ActiveUS7332835B1Dc network circuit arrangementsElectrostatic/electro-adhesion relaysElectricityEngineering
MEMS-based switching module, as may be electrically connected to other such modules in a series circuit, to achieve a desired voltage rating is provided. A switching array may be made up of a plurality of such switching modules (e.g., used as building blocks of the switching array) with circuitry configured so that any number of modules can be connected in series to achieve the desired voltage rating (e.g., voltage scalability).
Owner:GENERAL ELECTRIC CO
Micro-electromechanical system based switching
ActiveUS7554222B2Avoid hard activationBoards/switchyards circuit arrangementsElectrostatic/electro-adhesion relaysEngineeringControl circuit
A current control device is disclosed. The current control device includes control circuitry integrally arranged with a current path and at least one micro electromechanical system (MEMS) switch pair disposed in the current path. The current control device further includes a hybrid arcless limiting technology (HALT) circuit connected in parallel with the at least one MEMS switch pair facilitating the opening of the at least one MEMS switch pair.
Owner:GENERAL ELECTRIC CO
Electromechanical Switching Circuitry In Parallel With Solid State Switching Circuitry Selectively Switchable To Carry A Load Current Appropriate To Such Circuitry
ActiveUS20080137238A1Electrostatic/electro-adhesion relaysElectric switchesEngineeringOperational capabilities
A switching system is provided. The switching system includes electromechanical switching circuitry, such as a micro-electromechanical system switching circuitry. The system may further include solid state switching circuitry coupled in a parallel circuit with the electromechanical switching circuitry, and a controller coupled to the electromechanical switching circuitry and the solid state switching circuitry. The controller may be configured to perform selective switching of a load current between the electromechanical switching circuitry and the solid state switching circuitry in response to a load current condition appropriate to an operational capability of a respective one of the switching circuitries.
Owner:GENERAL ELECTRIC CO
Remote-operable micro-electromechanical system based over-current protection apparatus
ActiveUS20080310056A1Facilitate interruptionElectrostatic/electro-adhesion relaysElectric switchesControl signalControl circuit
The present invention provides a remote operable over-current protection apparatus. The apparatus includes control circuitry integrally arranged on a current path and a micro electromechanical system (MEMS) switch disposed on the current path, the MEMS switch responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path. The apparatus further includes a communication connection in signal connection with the control circuitry such that the control circuitry is responsive to a control signal on the communication connection to control a state of the MEMS switch.
Owner:GENERAL ELECTRIC CO
Micro-electromechanical system based selectively coordinated protection systems and methods for electrical distribution
ActiveUS20080310062A1Electrostatic/electro-adhesion relaysElectric switchesElectricityDistribution system
Electrical distribution systems implementing micro-electromechanical system based switching devices. Exemplary embodiments include a method in an electrical distribution system, the method including determining if there is a fault condition in a branch of the electrical distribution system, the branch having a plurality of micro electromechanical system (MEMS) switches, re-closing a MEMS switch of the plurality of MEMS switches, which is furthest upstream in the branch and determining if the fault condition is still present. Exemplary embodiments include an electrical distribution system, including an input port for receiving a source of power, a main distribution bus electrically coupled to the input port, a service disconnect MEMS switch disposed between and coupled to the input port and the main distribution bus and a plurality of electrical distribution branches electrically coupled to the main distribution bus.
Owner:ABB (SCHWEIZ) AG
Micro-electromechanical system based switching
ActiveUS8358488B2Electrostatic/electro-adhesion relaysElectric switchesControl circuitElectrical and Electronics engineering
A current control device is disclosed. The current control device includes control circuitry integrally arranged with a current path and at least one micro electromechanical system (MEMS) switch disposed in the current path. The current control device further includes a hybrid arcless limiting technology (HALT) circuit connected in parallel with the at least one MEMS switch facilitating arcless opening of the at least one MEMS switch, and a pulse assisted turn on (PATO) circuit connected in parallel with the at least one MEMS switch facilitating arcless closing of the at least one MEMS switch.
Owner:GENERAL ELECTRIC CO
MEMS micro-switch array based on current limiting enabled circuit interrupting apparatus
ActiveUS7903382B2Electrostatic/electro-adhesion relaysSwitch operated by falling currentCurrent limitingCircuit breaker
Owner:ABB (SCHWEIZ) AG
Remote-operable micro-electromechanical system based over-current protection apparatus
ActiveUS7885043B2Facilitate interruptionElectrostatic/electro-adhesion relaysElectric switchesControl signalEngineering
The present invention provides a remote operable over-current protection apparatus. The apparatus includes control circuitry integrally arranged on a current path and a micro electromechanical system (MEMS) switch disposed on the current path, the MEMS switch responsive to the control circuitry to facilitate the interruption of an electrical current passing through the current path. The apparatus further includes a communication connection in signal connection with the control circuitry such that the control circuitry is responsive to a control signal on the communication connection to control a state of the MEMS switch.
Owner:GENERAL ELECTRIC CO
Switch structure and associated circuit
ActiveUS20110140546A1Minimum characteristic resistanceContact mechanismsElectrostatic/electro-adhesion relaysElectrical resistance and conductanceEngineering
An apparatus, such as a switch module, is provided. The apparatus can include an electromechanical switch structure configured to move between an open configuration and a fully-closed configuration (associated with a minimum characteristic resistance) over a characteristic time. A commutation circuit can be connected in parallel with the electromechanical switch structure, and can include a balanced diode bridge configured to suppress arc formation between contacts of the electromechanical switch structure and a pulse circuit including a pulse capacitor configured to form a pulse signal (in connection with a switching event of the electromechanical switch structure) for causing flow of a pulse current through the balanced diode bridge. The electromechanical switch structure and the balanced diode bridge can be disposed such that a total inductance associated with the commutation circuit is less than or equal to a product of the characteristic time and the minimum characteristic resistance.
Owner:GENERAL ELECTRIC CO
Circuit system with supply voltage for driving an electromechanical switch
InactiveCN101388302AAc-dc conversion without reversalElectrostatic/electro-adhesion relaysLow voltageControl switch
The invention discloses a circuit system with supply voltage for driving an electromechanical switch. A circuit (10) for controlling operation of a load (16) is disclosed. In one example, a MEMS switch (20) is positioned in the circuit(10) to place the load (16) in one of a conducting state or a nonconducting state. A piezoelectric transformer (46) provides a relatively high voltage output signal or a relatively low voltage output signal to control movement of the switch (20) between a closed position, placing the load in the conducting state, and an open position. The high voltage output signal includes a frequency component in the resonant frequency range of the transformer (46). Control circuitry (65) provides an input voltage signal to the piezoelectric transformer (46) to provide the high voltage output signal or the low voltage output signal at the output terminals of the piezoelectric transformer (46).
Owner:GENERAL ELECTRIC CO
Switch structure and associated circuit
ActiveCN102103945AElectrostatic force can be changedElectrostatic/electro-adhesion relaysElectronic switchingElectrical resistance and conductanceComputer module
Owner:GENERAL ELECTRIC CO
Micro-electromechanical switch protection in series parallel topology
An electrical switching device is presented. The electrical switching device includes multiple switch sets coupled in series. Each of the switch sets includes multiple switches coupled in parallel. A control circuit is coupled to the multiple switch sets and configured to control opening and closing of the switches. One or more intermediate diodes are coupled between the control circuit and each point between a respective pair of switch sets.
Owner:GENERAL ELECTRIC CO
Micro-electromechanical system based arc-less switching with circuitry for absorbing electrical energy during a fault condition
A system is presented. The system includes a micro-electromechanical system switch. Further, the system includes a balanced diode bridge configured to suppress arc formation between contacts of the micro-electromechanical system switch. A pulse circuit is coupled to the balanced diode bridge to form a pulse signal in response to a fault condition. An energy-absorbing circuitry is coupled in a parallel circuit with the pulse circuit and is adapted to absorb electrical energy resulting from the fault condition without affecting a pulse signal formation by the pulse circuit.
Owner:GENERAL ELECTRIC CO
Resettable MEMS micro-switch array based on current limiting apparatus
ActiveUS20080316664A1Electrostatic/electro-adhesion relaysElectric switchesCurrent limitingOver current protection
The present invention comprises a method for over-current protection. The method comprising monitoring a load current value of a load current passing through a plurality of micro-electromechanical switching system devices, determining if the monitored load current value varies from a predetermined load current value, and generating a fault signal in the event that the monitored load current value varies from the predetermined load current value. The method also comprises diverting the load current from the plurality of micro-electromechanical switching system, devices in response to the fault signal and determining if the variance in the load current value was due to a true fault trip or a false nuisance trip.
Owner:GENERAL ELECTRIC CO
System with circuitry for suppressing arc formation in micro-electromechanical system based switch
ActiveUS9076607B2Electrostatic/electro-adhesion relaysProtective switches using micromechanicsOver current protectionVoltage
A system that includes micro-electromechanical system switching circuitry is provided. The system may include a first over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a voltage level across contacts of the micro-electromechanical system switching circuitry during a first switching event, such as a turn-on event. The system may further include a second over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a current flow through the contacts of the micro-electromechanical system switching circuitry during a second switching event, such as a turn-off event.
Owner:GENERAL ELECTRIC CO
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