| Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726) |
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| 11/11/2009 | CN101577521A Wind turbine generator system |
| 11/11/2009 | CN101577492A Power supply circuit |
| 11/11/2009 | CN101577486A Method and device used for power supply device and capable of adjusting front shielding device |
| 11/11/2009 | CN101577426A Power system state estimator applicable to wide area measurement system |
| 11/11/2009 | CN101577420A Device and method for limiting drain-source voltage of transformer-coupled push pull power conversion circuit |
| 11/11/2009 | CN101577417A Method for current differential protection of direct current electric transmission line |
| 11/11/2009 | CN101577416A Permanent-magnet bias fault current limiter |
| 11/11/2009 | CN101577415A Method for judging system instability of relay protection of electric power system |
| 11/11/2009 | CN101577414A Electromotor overspeed preventer |
| 11/11/2009 | CN101577191A Method for protecting contact point of relay in high-power circuit and protection circuit |
| 11/11/2009 | CN100559678C System and method for protecting and controlling power converter with constant maximum current |
| 11/11/2009 | CN100559309C Protection system for power distribution systems |
| 11/10/2009 | US7616461 Control method and circuit with indirect input voltage detection by switching current slope detection |
| 11/10/2009 | US7616460 Apparatus, system, and method for AC bus loss detection and AC bus disconnection for electric vehicles having a house keeping power supply |
| 11/10/2009 | US7616423 Electronic equipment, driving method thereof and method of driving electronic circuit |
| 11/10/2009 | US7615972 System and method for electric current and power monitoring and control of a generator |
| 11/10/2009 | US7615949 Motor control apparatus |
| 11/06/2009 | CA2656940A1 Power interruption protection structure for led string light |
| 11/05/2009 | WO2009134046A2 Safety switch for secondary battery for electric vehicle and charging/discharging system for secondary battery for electric vehicle using the same |
| 11/05/2009 | WO2009132900A1 Method and device for computer-aided detection of jamming of an object |
| 11/05/2009 | WO2009132893A1 Method and device for determining the relative humidity of an insulating liquid filled electric apparatus |
| 11/05/2009 | US20090274563 Methods and systems for automatic rotation direction determination of electronically commutated motor |
| 11/05/2009 | US20090273954 Protection Method, System and Apparatus for a Power Converter |
| 11/05/2009 | US20090273871 Virtual Closed Loop Power Distribution System and Method |
| 11/05/2009 | US20090273865 Power supply with adjustable outputted voltage |
| 11/05/2009 | US20090273738 Inverter, its control circuit, and light emitting device and liquid crystal television using the same |
| 11/05/2009 | US20090273419 Switching device, in particular a compact starter |
| 11/05/2009 | US20090272035 Collision monitoring system |
| 11/05/2009 | DE102008021854A1 Vorrichtung und Verfahren zur Überwachung möglicher Fehler in einer technischen Einrichtung, insbesondere Servo-Lenksystem Apparatus and method for monitoring possible errors in a technical device, in particular power steering system |
| 11/05/2009 | DE102008020731A1 Generatoreinrichtung mit Überwachung von Strompfaden Generator apparatus monitoring of current paths |
| 11/05/2009 | CA2723142A1 Fault detection for battery chargers |
| 11/04/2009 | EP2114007A1 Power-system with utility fault ride-through capability |
| 11/04/2009 | EP2113982A1 Battery protection ic and battery device |
| 11/04/2009 | EP2113929A1 Method and device for determining the relative humidity of an insulating liquid filled electric apparatus |
| 11/04/2009 | EP1985159B1 Circuit arrangement for providing an operating dc voltage |
| 11/04/2009 | EP1240702B1 Thermally protected electric machine |
| 11/04/2009 | CN201341112Y Power supply circuit board of high voltage frequency transformer power unit |
| 11/04/2009 | CN201341028Y Mobile power supply |
| 11/04/2009 | CN201341024Y Single-phase grounding failure computer line selection device |
| 11/04/2009 | CN201341023Y High pressure switch intelligent measuring, controlling and protecting device for underground coal mine |
| 11/04/2009 | CN201341022Y Battery reverse-connection protective circuit of wind-light complementary system |
| 11/04/2009 | CN201341021Y Battery reverse-connection protective circuit of wind-light complementary system |
| 11/04/2009 | CN201341020Y Battery reverse-connection protective circuit of wind-light complementary system |
| 11/04/2009 | CN201341019Y Charge and discharge protection circuit of multi-cell lithium battery |
| 11/04/2009 | CN201341018Y Air conditioner phase-sequence controller with automatic phase change function |
| 11/04/2009 | CN201341017Y Electromotor protector |
| 11/04/2009 | CN201341016Y Energy-saving temperature control protection device of large or medium motor |
| 11/04/2009 | CN201341015Y Overvoltage protector for self excited generator |
| 11/04/2009 | CN201340890Y Portable USB card-reading universal charger |
| 11/04/2009 | CN201340777Y Self-cooled high-frequency transformer unit with temperature protection function |
| 11/03/2009 | US7613019 Method and apparatus to limit maximum switch current in a switch of a switching power supply |
| 11/03/2009 | US7612971 Micro-electromechanical system based switching in heating-ventilation-air-conditioning systems |
| 11/03/2009 | US7612515 Method and device for identifying pinching situations in displacing drives in motor vehicles |
| 11/03/2009 | US7612510 Pump controller system and method |
| 11/03/2009 | CA2425901C Fault tolerant power supply circuit |
| 10/29/2009 | WO2009130210A1 Arc detector and associated method for detecting undesired arcs |
| 10/29/2009 | WO2009130201A1 Arc detector and associated method for detecting undesired arcs |
| 10/29/2009 | US20090271077 Electronic control system and method for an auxiliary device interlock safety system |
| 10/29/2009 | US20090271056 Control apparatus for electric car |
| 10/29/2009 | US20090268489 Flyback converter having an active snubber |
| 10/29/2009 | US20090268356 Input protection circuit |
| 10/29/2009 | US20090268354 High-voltage bus discharge with logarithmic self-protection |
| 10/29/2009 | US20090267714 Switch-state monitoring device |
| 10/29/2009 | US20090267551 Steering control apparatus |
| 10/29/2009 | US20090267412 Electric-vehicle controller |
| 10/29/2009 | DE102008020371A1 Method for overload protection of three-phase load by current monitoring sensor, involves applying current sensor for determining difference of two phase currents, where three-phase motors are provided with motor coils |
| 10/29/2009 | DE102007000854B4 Lastantriebsvorrichtung Load driving device |
| 10/29/2009 | CA2721906A1 Arc detector and associated method for detecting undesired arcs |
| 10/28/2009 | EP2112737A2 Circuit for protecting at least one direct current network with direct current loads against overvoltage |
| 10/28/2009 | EP2112736A1 Arc detector and associated method for detecting undesired arcs |
| 10/28/2009 | EP2112517A1 Electric line protection for determining the direction in which a fault occurs |
| 10/28/2009 | EP2111681A1 Fuse saving power distribution system fault protection |
| 10/28/2009 | EP1745535B1 Device for protection against thermal overload |
| 10/28/2009 | EP1131646B1 Battery power source protecting device for an electromotive device |
| 10/28/2009 | CN101569072A Method and system for video surveillance system motor overcurrent protection |
| 10/28/2009 | CN101568893A Soft-start circuit and method for power-up of an amplifier circuit |
| 10/28/2009 | CN101567651A Electrical safety circuit in electric automobile |
| 10/28/2009 | CN101567556A Over-voltage charge protective device and method used for charging cell phone |
| 10/28/2009 | CN101567555A 电池组 Battery |
| 10/28/2009 | CN101567554A Battery pack protective circuit applying micro-electromechanical system (MEMS) switch |
| 10/28/2009 | CN101567553A Circuit for protecting a DC network with DC loads against overvoltage |
| 10/28/2009 | CN101567552A Recognition method of magnetizing inrush current and internal short circuit of power transformer by utilizing morphological structure |
| 10/28/2009 | CN101567475A Lithium battery/battery pack measuring and protecting method based on current subsection detecting technique |
| 10/28/2009 | CN100555797C Moving energy station |
| 10/28/2009 | CN100555796C Battery pack, cordless power tool and its identification method |
| 10/27/2009 | US7609498 Inverted circuit overcurrent protection device and hybrid integrated circuit device with the same incorporated |
| 10/27/2009 | US7609491 Clothes dryer motor with broken belt switch |
| 10/27/2009 | US7609038 Switching power supply with protection function |
| 10/27/2009 | US7609015 Load driving device and electrical apparatus using the same |
| 10/27/2009 | US7608940 Power supply device and method of controlling the same |
| 10/22/2009 | WO2009127817A1 Self organising unit protection |
| 10/22/2009 | WO2009127040A1 Module for controlling a switch in a high voltage electrical substation |
| 10/22/2009 | US20090262481 Apparatus, system, and method for electrostatic discharge protection |
| 10/22/2009 | US20090262468 Temperature protection circuit, power supply, and electronic device |
| 10/22/2009 | US20090261761 Working vehicle |
| 10/22/2009 | US20090261610 Control of a Slide-Out Room |
| 10/22/2009 | DE102008022840B3 Akkumulator für Hybrid-Fahrzeuge mit einer Sicherheitseinrichtung zum Unterbrechen eines Hochspannungskreises Battery for hybrid vehicles with a safety device for interrupting a high-voltage circuit |
| 10/22/2009 | DE102008020030A1 Schaltung zum Schutz zumindest eines Gleichstromnetzes mit Gleichstromverbrauchern gegen Überspannung Circuit for protecting at least one DC network with DC consumers against overvoltage |
| 10/22/2009 | DE102008019673A1 Schutzanordnung zum Schutz sicherheitsrelevanter Elektronikschaltungen vor Fehlfunktionen Protection order to protect security-sensitive electronic circuits against malfunctions |
| 10/21/2009 | EP2110920A1 Devices and methods for protection of rechargeable elements |