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

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)
10/2011
10/19/2011	CN102222884A Short circuit self-protection circuit for insulated gate bipolar device through two-step detection and protection method thereof
10/19/2011	CN102222883A Automatic over-current and short-circuit protecting and restoring circuit of jump start power
10/19/2011	CN102222882A Failure detection device for power circuit including switching element
10/19/2011	CN102222881A Leakage current monitoring method for solar photovoltaic inverter
10/19/2011	CN102222880A Method for identifying inrush exciting current of transformer and avoiding differential protection maloperation of transformer
10/19/2011	CN102222879A Protection method of no-load switch-on and no-load operation of transformer
10/19/2011	CN102222878A Phase-failure protection structure of reactive power compensation device
10/19/2011	CN102222807A 二次电池 Secondary battery
10/19/2011	CN102221640A Voltage detector and protective device of alternating/direct-current alternative power converter
10/19/2011	CN101635455B Method for calibrating characteristic waves of power network by utilizing clock stamp and system
10/18/2011	US8040704 Integrated magnetics switching converter with zero inductor and output ripple currents and lossless switching
10/18/2011	US8040112 Vehicle-use power generation control device
10/18/2011	US8040091 Method and apparatus for stall detection
10/18/2011	US8039994 Reduction of inrush current due to voltage sags
10/18/2011	US8039988 Solar powered ventilation system for vehicle and method of operating the same
10/18/2011	US8037695 Fault current limiter
10/13/2011	WO2011126346A2 Solar photovoltaic device and a control method therefor
10/13/2011	WO2011125210A1 Inrush-current alleviating device and method of alleviating inrush current
10/13/2011	US20110249476 Voltage detector and protection apparatus using the same
10/13/2011	US20110249475 Grid-connected inverter
10/13/2011	US20110248657 Motor control apparatus
10/13/2011	DE102010031041A1 Protection system for motor protection relay for thermal monitoring electromotor utilized in industrial automatic control engineering application, has capacitor whose electrodes are connected with respective terminals of microcontroller
10/12/2011	EP2375542A2 Power tool system
10/12/2011	EP2375526A2 Electric low voltage building installation
10/12/2011	EP1929602B1 Method and system for fault detection in electrical power devices
10/12/2011	EP1800392B1 Motor control
10/12/2011	CN202009355U Multifunctional digitalized and modularized energy-saving electric controller
10/12/2011	CN202009298U Motor component of heat supply ventilation system actuator, transmission mechanism and actuator
10/12/2011	CN202009297U Junction box capable of monitoring operational data of motor
10/12/2011	CN202009253U Solar power supply device for insect killer
10/12/2011	CN202009246U Bluetooth charging system
10/12/2011	CN202009241U High frequency intelligent charger
10/12/2011	CN202009227U Pre-charging circuit for motor driver of automobile air conditioning system
10/12/2011	CN202009226U Three-phase power distribution carrier monitoring device for low-voltage cabinet
10/12/2011	CN202009225U Boosting DC-DC short-circuit protection circuit
10/12/2011	CN202009224U Protective device for air-conditioning stepping motor
10/12/2011	CN202009223U Intelligent monitor of motor
10/12/2011	CN202009222U Transformer protection device used in power grid
10/12/2011	CN1941582B High power supply to control an abnormal load
10/12/2011	CN102217158A Electronic current interrupt device for battery
10/12/2011	CN102214941A Power source management system and portable electronic device with same
10/12/2011	CN102214923A Active filter controller based on double-DSP (Digital Signal Processing) and FPGA (Field-Programmable Gate Array) control system
10/12/2011	CN102214921A Current waveform control method based on repetitive control strategy
10/12/2011	CN102214920A Circuit cluster-based method for analyzing grid cascading failure based on
10/12/2011	CN102214914A Charging and discharging protection circuit of lithium iron phosphate battery for electric automobile
10/12/2011	CN102214913A Sealed phase shortage protection relay of three-phase source
10/12/2011	CN102214912A Method for judging half-wave excitation surge current based on trigonometric function relation
10/12/2011	CN102214519A Current three-phase linked switching device
10/12/2011	CN102213091A Control system of underground measurement and control circuit
10/12/2011	CN102211648A Electronic speed regulator for yacht
10/12/2011	CN101282036B Overcurrent protection circuit for discharging electricity
10/11/2011	US8036005 Switching apparatus for grounding an inverter
10/11/2011	US8036004 Uninterruptible power supply with total isolation
10/11/2011	US8036003 Switching power supply device and electrical apparatus using the same
10/11/2011	US8035935 Countermeasure for EMP-E3 induced currents
10/11/2011	US8035934 Shift switching device and shift switching method
10/11/2011	DE202010013666U1 Spannungswandler Voltage converter
10/07/2011	DE202011004515U1 Vorrichtung zum sicheren Betrieb einer Ladestation mit Rückspeisung Device for safe operation of a charging station with recovery
10/06/2011	WO2011121386A1 A method for transfer of control between devices in a substation system and a device thereof
10/06/2011	WO2011120631A1 Protection circuits and methods for electrical machines
10/06/2011	WO2011120457A2 Switch control circuit for power supply and power supplying circuit
10/06/2011	US20110242710 Integral current transformer shunt resistor
10/06/2011	US20110241590 Motor driving apparatus having fault diagnostic function
10/06/2011	US20110241589 Electric motor control system
10/06/2011	US20110241458 Stator coil coolant flow reduction monitoring
10/06/2011	DE102011012386A1 Motorsteuervorrichtung mit einer Fehlerdiagnosefunktion Motor controller with a fault diagnosis function
10/06/2011	DE102010003595A1 Wechselrichter für eine elektrische Maschine und Verfahren zum Betreiben eines Wechselrichters für eine elektrische Maschine Inverter for an electric machine and method of operating an inverter for an electrical machine
10/06/2011	CA2794382A1 Protection circuits and methods for electrical machines
10/05/2011	EP2372860A1 Protection circuits and methods for electrical machines
10/05/2011	EP2372859A1 A thermal protection control method and a system thereof
10/05/2011	EP1726076B1 Method for monitoring the displacement of a component driven by a driving device
10/05/2011	CN202005023U Mains input LED driving circuit with low power consumption
10/05/2011	CN202004716U Control system of wind driven generator
10/05/2011	CN202004656U Electronic bridge oscillating transformer with DC low voltage power supply
10/05/2011	CN202004640U Intelligent high frequency switching power supply with comprehensive protection function
10/05/2011	CN202004604U Multi-winding serial-connection variable-capacity induction motor and control device thereof
10/05/2011	CN202004572U Motor protector
10/05/2011	CN202004498U Power battery charging circuit of electric automobile
10/05/2011	CN202004490U Household lithium ion battery repair device
10/05/2011	CN202004481U Digital mobile power of multiple functions
10/05/2011	CN202004454U Testing system of direct-current power transmission converter and control protection equipment thereof
10/05/2011	CN202004445U Protection circuit and bridge arm with same
10/05/2011	CN202004444U Device for protecting storage battery of solar energy or wind generator system
10/05/2011	CN202004443U Contravariant power for real-time monitoring of working temperature
10/05/2011	CN202004442U Voltage-sensitive resistor detection protection circuit of photovoltaic grid-connected inverter
10/05/2011	CN202004441U Cycle-by-cycle current-limit inversion controller
10/05/2011	CN202004440U Alternating-current voltage stabilizer capable of automatically monitoring voltage and current at input end and output end
10/05/2011	CN202004439U Motor overload protector
10/05/2011	CN202004438U Secondary side voltage protecting and measuring device for V-V type voltage transformer
10/05/2011	CN202004437U Long-time overload protection device of distribution transformer
10/05/2011	CN202004436U Light emitting diode (LED) driving circuit and short circuit protection circuit thereof
10/05/2011	CN202004435U Circuit protector
10/05/2011	CN202004434U Strong-current protection device of butt welding machine
10/05/2011	CN202004429U Phase-failure protection alternating current contactor
10/05/2011	CN202003909U Three-in-one relay device
10/05/2011	CN202002975U Three-phase low power consumption cost-control intelligent watt-hour meter based on zero line judging switching power supply
10/05/2011	CN102210092A Three-phase AC power controller
10/05/2011	CN102209231A Equipment information output method and system
10/05/2011	CN102208888A Motor driving system, motor controller, and safety function expander
10/05/2011	CN102208801A Operation method for safely applying line protection device to wind power station

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