Class / Patent application number | Description | Number of patent applications / Date published |
307127000 | Polarity, phase sequence or reverse flow | 14 |
20080238215 | METHOD, MEMORY MEDIA AND APPARATUS FOR DETECTION OF GRID DISCONNECT - A phase shift procedure for detecting a disconnect of a power grid from a feeder that is connected to a load and a distributed generator. The phase shift procedure compares a current phase shift of the output voltage of the distributed generator with a predetermined threshold and if greater, a command is issued for a disconnect of the distributed generator from the feeder. To extend the range of detection, the phase shift procedure is used when a power mismatch between the distributed generator and the load exceeds a threshold and either or both of an under/over frequency procedure and an under/over voltage procedure is used when any power mismatch does not exceed the threshold. | 10-02-2008 |
20090039712 | SAFE START-UP INTERFACE FOR A VEHICLE WITH AN ELECTRIC STARTER - The invention relates to method of safely starting a vehicle, comprising the following steps, consisting in: connecting either of the two input/output terminal pairs (ES | 02-12-2009 |
20100033027 | Automatic Pole - An automatic pole includes a mechanical push device and a circuit board device electric-connected with each other. The mechanical push device includes a magnetic inductance device, a contact device, and a housing. The circuit board device comprises a control circuit and an internal cell. The control circuit includes a first optoelectronic coupler and a second optoelectronic coupler electric-connected with each other, and a first transistor which base is connected to the first optoelectronic coupler and a second transistor which base is connected to the second optoelectronic coupler. | 02-11-2010 |
20110181126 | System and device for current measuring, controlling, and heat sinking - The present invention provides a system and device for current measuring, controlling, and heat sinking which includes a positive electrode terminal carrier, a positive electrode output terminal carrier, a negative electrode terminal carrier, and a current control circuit carrier. The system and device is to be installed on a battery with high current capacity. In which the output current flowing through the battery's positive electrode is measured by the current measurement device which is installed in the positive electrode terminal carrier. A reverse current control switch and a forward current control switch are installed in the current control circuit carrier to control the current flowing path and the current flowing in the path. Furthermore the heat generated by the circuit is radiated by the current control circuit carrier. | 07-28-2011 |
20110241445 | Transceiver Interface - A transceiver interface is disclosed in which a true positive node and a true ground node are maintained with three adaptive terminals. The adaptive terminals each have pairs of isolation elements linking them to the true positive node and true ground node, whereby, each of the adaptive terminals can function as a positive terminal, ground terminal, and transceiver terminal, in response to how the interface is connected to external equipment. | 10-06-2011 |
20110278955 | LOW ON-RESISTANCE MOSFET IMPLEMENTED, BY-PASS DIODE OR CIRCUIT BREAKER AND RELATED SELF-POWERING AND CONTROL CIRCUIT - A MOSFET implemented self-powered current by-pass or circuit breaker device is based on the use of a high multiplication factor (HMF) inductive voltage booster, adapted to boost a voltage as low as few tens of mV up to several Volts, assisted by a start-up low multiplication factor (LMF) charge pump made with low threshold transistors for providing a supply voltage to a polarity inversion detecting comparator of the drain-to-source voltage difference of a power MOSFET connected in parallel to a DC source or string of series connected DC sources or battery, in series to other DC sources during normal operation of the parallel connected DC source or string of series connected DC sources or battery. The inductance for the high multiplication factor, inductive voltage booster for most of the considered power applications is on the order of a few pH and such a relatively send inductor may be included as a discrete component in a compact package or “system-in-package” of monolithically integrated circuits. | 11-17-2011 |
20120056496 | METHOD FOR CONNECTING AN INDUCTIVE LOAD AND CONNECTING CIRCUIT FOR CARRYING OUT THE METHOD - A method is provided for connecting an inductive load, especially a winding of a generator, for testing purposes to a predetermined alternating medium voltage, whereby the inductive load is connected to the medium voltage by means of a breaker. To reduce the inrush current, the connection is timed to come into effect when the medium voltage has a predetermined phase. | 03-08-2012 |
20120293018 | POLARITY CORRECTING DEVICE - Embodiments disclosed herein relate generally to a device for correcting the polarity of electricity in a circuit. In direct current circuits, a positive voltage received from a power source will exit the device at a predetermined output regardless of which input of the device received the positive voltage. In alternating current circuits, one or more currents received from a hot output(s) of a power source will be connected to a predetermined output(s) of the device regardless of which input(s) received the current(s). | 11-22-2012 |
20130154393 | PROTECTING AGAINST TRANSIENTS IN A COMMUNICATION SYSTEM - A system for transmitting alternating current power and communication signals between a first location and a second location through a communication path which includes at least one inductive load and at least one switch configured to switch power to the at least one inductive load on and off is disclosed herein. The system comprises a control configured to control the at least one switch so that, if the power is switched on during a particular phase of the power, is the power is switched off during the opposite phase of the power, and if the power is switched off during a particular phase of the power, the power is switched on during the opposite phase of the power. | 06-20-2013 |
20140001886 | SYSTEM AND METHOD TO PERFORM AUTOMATIC PHASE REVERSAL DETECTION | 01-02-2014 |
20140091642 | DEVICE AND METHOD FOR CONTROLLING THE POLARITY OF A MICROPHONE OF A TERMINAL DEVICE - A device for controlling the polarity of a microphone of a portable terminal includes: a microphone that includes a current control element that is connected between a first polarity terminal and a second polarity terminal; first and second connection terminals that are connected to the first polarity terminal and the second polarity terminal of the microphone; a control unit that detects the level of at least one of the first and second connection terminals and determines whether the polarity of the microphone has been normally connected; a codec that is connected to a first polarity terminal and a second polarity terminal and codes audio signals; and a polarity adjusting unit that is connected between the first and second connection terminals and the first and second polarity terminals of the codec, and switches the outputs of the first and second connection terminals under the control of the control unit in the case of an abnormal connection, so as to be connected to the codec to align polarity. | 04-03-2014 |
20150069858 | Automatic Diagnosis or Repair for a Generator Controller - A set of generators are connected in parallel using an electrical bus. One of the generators includes selectively connected inputs including a first input associated with a generator and a second input associated with the bus. A controller is configured to receive a first electrical characteristic from the first input assigned to a first connection and a second electrical characteristic from the second input assigned to a second connection. The controller is configured to generate a switching signal to assign the first input to the second connection or assign the second input to the first connection in response to a difference between the first electrical characteristic and the second electrical characteristic exceeding a threshold. | 03-12-2015 |
20160036230 | Synchronous Condenser - The present application thus provides a method of operating a synchronous condenser. The method may include the steps of accelerating a gas turbine engine to full speed no load conditions, connecting a generator attached to the gas turbine engine to an electric power grid, turning off a flow of fuel to the gas turbine engine, operating the generator in a synchronous condenser mode, and providing or absorbing reactive power to or from the electric power grid. | 02-04-2016 |
20160203924 | Method And Control System For Controlling A Switching Device | 07-14-2016 |