摘要:
HVAC systems implementing micro-electromechanical system based switching devices. Exemplary embodiments include a HVAC system, including a load motor, a main breaker micro electromechanical system (MEMS) switch, and a variable frequency drive (VFD) disposed between and electrically coupled to the load motor and the main breaker MEMS switch.
摘要:
HVAC systems implementing micro-electromechanical system based switching devices. Exemplary embodiments include a HVAC system, including a load motor, a main breaker micro electromechanical system (MEMS) switch, and a variable frequency drive (VFD) disposed between and electrically coupled to the load motor and the main breaker MEMS switch.
摘要:
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.
摘要:
A switching array includes a plurality of switching elements electrically coupled to each other, each switching element being configured to be switched between conducting and non-conducting states. The switching array also includes at least one parasitic minimizing circuitry electrically coupled to the plurality of switching elements and configured to provide near zero electrical voltage and current across and through each of the plurality of switching elements during switching of the plurality of switching elements between the conducting and non-conducting states.
摘要:
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.
摘要:
A method to reduce an inductive voltage surge across a switch array is disclosed. The method comprises the steps of, (a) directing at least a portion of an electric current away from at least a portion of said switch array; and (b) independently opening different portions of the switch array. A system to reduce an inductive voltage surge across an electrical device comprising a current bypass circuit is also disclosed.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A MEMS switch is provided including a substrate, a movable actuator coupled to the substrate and having a first side and a second side, a first fixed electrode coupled to the substrate and positioned on the first side of the movable actuator to generate a first actuation force to pull the movable actuator toward a conduction state, and a second fixed electrode coupled to the substrate and positioned on the second side of the movable actuator to generate a second actuation force to pull the movable actuator toward a non-conducting state.