| 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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| 09/17/2009 | DE102008063136A1 Method for protecting lithium-ion battery in vehicle, involves separating electrical system of vehicle by thermal or electrically overloading of lithium ion battery |
| 09/17/2009 | DE102008013447A1 Surge arrester, has separating device integrated in electrical contact path of arresting element, where defect state variable of arrester is supplied to auxiliary module to pass high switching current or short-circuit current over module |
| 09/17/2009 | CA2718406A1 Capacitor bank monitor and method of use thereof |
| 09/16/2009 | EP2100368A1 Semiconductor protective elements for controlling short-circuits at the dc end of voltage source converters |
| 09/16/2009 | CN201312117Y Neutral point flexible resistor grounding running device for electric network |
| 09/16/2009 | CN201312116Y Electric monitoring and protecting device |
| 09/16/2009 | CN201312115Y Intelligent motor protector |
| 09/16/2009 | CN101536281A A relay-to-relay direct communication system and method in a electric power system |
| 09/16/2009 | CN101534091A Mine flameproof and intrinsic safety type variable frequency speed control device |
| 09/16/2009 | CN101534017A Charge-discharge protection circuit for a plurality of lithium batteries |
| 09/16/2009 | CN101534008A Method for reducing influence of voltage sag on electric equipment |
| 09/16/2009 | CN101534004A Method for distinguishing failure and tripping of high-voltage short-distance double-circuit chain-type power network |
| 09/16/2009 | CN101534003A Data synchronization method for digitized fiber differential protection device |
| 09/16/2009 | CN101534002A Data synchronization method for ET-connected optical-fiber differential protection devices |
| 09/16/2009 | CN101534001A Method for detecting distribution network short circuit fault and restoring power supply in non-broken-down section |
| 09/16/2009 | CN100541964C Centralized decision-making real time emergency control method for large electric network overloading |
| 09/16/2009 | CN100541963C Charge and discharge protecting module of lithium dynamical battery |
| 09/16/2009 | CN100541962C Digital protection circuit for multi-channel DC/DC insulation power |
| 09/16/2009 | CN100541961C Series motor and method for controlling the same |
| 09/16/2009 | CN100541960C Locking power-off protection circuit employing pulse modulation |
| 09/16/2009 | CN100541959C Fan electrical machinery control device and its method |
| 09/16/2009 | CN100541958C Over current protector circuit of electric backset decelerator controller |
| 09/16/2009 | CN100541957C Monitoring device, electrical machine tool, current supply device, and associated method of operation |
| 09/15/2009 | US7589943 GIC reducer |
| 09/15/2009 | US7589942 MEMS based motor starter with motor failure detection |
| 09/15/2009 | US7589940 Voltage boosting circuit and electricity-driven power steering device |
| 09/14/2009 | CA2790803A1 Fault clearing method for permanent magnet machines |
| 09/14/2009 | CA2657070A1 Fault clearing method for permanent magnet machines |
| 09/11/2009 | WO2009110244A1 Battery system |
| 09/10/2009 | US20090225573 Stable power supplying apparatus |
| 09/10/2009 | US20090225572 High voltage full bridge circuit and method for operating the same |
| 09/10/2009 | US20090225483 Electric circuit breaker |
| 09/10/2009 | US20090225479 Compressor Protection and Grid Fault Detection Device |
| 09/10/2009 | US20090224707 Electric Motor Control |
| 09/10/2009 | US20090224703 Control and Protection Methodologies For A Motor Control Module |
| 09/09/2009 | EP2097962A1 System and method for electric current and power monitoring and control of a generator |
| 09/09/2009 | EP1766747A4 Protection circuits for hybrid power systems |
| 09/09/2009 | EP1332538B1 Method for controlling an adjustment process for a piece |
| 09/09/2009 | EP1105969B9 Electronic circuits with wide dynamic range of on/off delay time |
| 09/09/2009 | EP0988677B1 Safety device for a drive mechanism |
| 09/09/2009 | EP0917753B1 A device for supervising in a high voltage converter station |
| 09/09/2009 | CN201307765Y Battery protector and terminal unit |
| 09/09/2009 | CN201307764Y Power supply circuit with overvoltage protection function |
| 09/09/2009 | CN201307763Y Electric motor phase failure protector |
| 09/09/2009 | CN201307762Y Comprehensive motor protector |
| 09/09/2009 | CN201307761Y Improved main electrical control circuit of spinning machine |
| 09/09/2009 | CN201307760Y Thermal protector for three-phase motor |
| 09/09/2009 | CN101527539A Speed adjustment control system of anti-inversion failure seamless switching motor and control method thereof |
| 09/09/2009 | CN101527535A Device for controlling current and method thereof |
| 09/09/2009 | CN101527450A Protective device for video transmission |
| 09/09/2009 | CN101527449A Distorting lens high-pressure protection circuit |
| 09/09/2009 | CN101527448A Battery protection circuit, testing device and method for battery protection circuit |
| 09/09/2009 | CN101527447A Method for applying a phase-fault overload protection device of isolating switch motor drive mechanism |
| 09/09/2009 | CN101527301A Battery protection IC chip |
| 09/09/2009 | CN100539350C Transient fault power direction based medium voltage bus protection method |
| 09/09/2009 | CN100539349C Lithium battery power supply control protection circuit and control protection method |
| 09/09/2009 | CN100539348C Secondary battery with protective circuit |
| 09/09/2009 | CN100539347C Thermal overload protection device and method |
| 09/09/2009 | CN100539346C Unit thermal control intelligent protection system |
| 09/08/2009 | US7586770 Interconnection inverter device |
| 09/08/2009 | US7586764 Synchronized rectifier filter control device for protecting a power supply from reverse current |
| 09/08/2009 | US7586760 Snubber capacitor resetting in a DC-to-DC converter |
| 09/08/2009 | US7586717 Electrical device for current conditioning |
| 09/08/2009 | US7586716 Regulator with shunt over-current by-pass |
| 09/03/2009 | WO2009107233A1 Driving controller of ac motor |
| 09/03/2009 | WO2009047748A3 Open circuit in secondary winding protection for current transformers |
| 09/03/2009 | US20090220825 Battery Pack and Battery Protection Method |
| 09/03/2009 | US20090218980 AC Motor Controller |
| 09/03/2009 | US20090218967 Motor Drive Circuit |
| 09/03/2009 | DE102008011597A1 Trennvorrichtung für einen Leistungshalbleiter und Verfahren zu deren Betreiben, Leistungsmodul und Systemanlage Separating device for a power semiconductor and methods of operation, power module and system installation |
| 09/03/2009 | DE102006010993B4 Schaltung und Verfahren zum Betrieb der Schaltung sowie Schaltnetzteil Circuit and method of operating the switching power supply circuit, and |
| 09/03/2009 | CA2716931A1 Thermal runaway protection system for a battery charger |
| 09/03/2009 | CA2714709A1 Driving controller for ac motor |
| 09/02/2009 | EP2096731A2 Opening-and-closing member control device |
| 09/02/2009 | EP2095907A1 Angle grinder |
| 09/02/2009 | EP1464102B1 High speed transfer system |
| 09/02/2009 | EP1384300B1 Monitoring apparatus |
| 09/02/2009 | EP1105955B1 Circuit for detecting an inadmissibly high current in an output stage |
| 09/02/2009 | CN101523682A Thyristor valve of a hvdc transmission system |
| 09/02/2009 | CN101521407A Three-segment out-of-step self-adaptive disconnecting method |
| 09/02/2009 | CN101521393A On-line uninterrupted power supply device |
| 09/02/2009 | CN101521392A Off-line uninterrupted power supply device |
| 09/02/2009 | CN101521371A Series capacitor compensated line distance protection method based on fault point position identification |
| 09/02/2009 | CN101521370A Current differential protection relay |
| 09/02/2009 | CN100536274C A method for realizing transformer protection based on guiding nano principle |
| 09/01/2009 | US7583521 Over voltage clamp |
| 09/01/2009 | US7583487 System and method for managing fault in a power system |
| 09/01/2009 | US7583063 Architecture for electric machine |
| 09/01/2009 | CA2350050C Electronic transformer for lighting |
| 08/27/2009 | US20090213512 Over-voltage protection circuit |
| 08/27/2009 | US20090213505 Operation Detection Devices Having a Sensor Positioned to Detect a Transition Event from an Overcurrent Protection Component and Related Methods |
| 08/27/2009 | US20090213504 Method And Arrangement For Triggering A Series Spark Gap |
| 08/27/2009 | US20090212627 Car power source apparatus |
| 08/27/2009 | US20090211822 Method and Apparatus for Stall Detection |
| 08/27/2009 | DE102008009279A1 Single-phase or multi-phase electrical circuit for switching off current over e.g. alternating current power controller in wind power plant, has series circuit, which is parallely connected to thyristors |
| 08/27/2009 | DE102008009278A1 Mehrphasige elektrische Schaltung zum Abschalten eines über jeweils einen Drehstromsteller geführten Stroms Multiphase electric circuit to cut off a run on each plate a three-phase current |
| 08/27/2009 | DE102008009276A1 Electric circuit operating method for e.g. gas turbine energy generation system, involves disconnecting coupling between stator of asynchronous generator and energy supply network during occurrence of failure in energy supply network |
| 08/26/2009 | EP2093872A1 Speed controller including a device for protection against overcurrents and overvoltages |
| 08/26/2009 | EP2093871A1 Device for protecting a speed controller against overcurrent |
| 08/26/2009 | EP2093870A1 Protection device for a variable speed drive including a filter choke |