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)
11/2011
11/17/2011	US20110278853 Methods, systems and apparatus for regulating frequency of generated power using flywheel energy storage systems with varying load and/or power generation
11/17/2011	DE19950137B4 Spannungssprung-Erfassungsvorrichtung Voltage step-detecting device
11/17/2011	DE102010020295A1 Circuit arrangement for protecting e.g. lithium ion battery in motor car, has converter circuitry with output that exhibits voltage difference with preset sign in relation to terminal such that separation circuit is supplied with power
11/16/2011	EP2386139A2 Method and device for monitoring the startup of an electrical drive
11/16/2011	EP1946419B1 System to control, protect and monitor the status of forced cooling motors for power transformers and similar
11/16/2011	CN202043344U Photovoltaic solar energy illumination control circuit
11/16/2011	CN202043053U Switching power supply with under-voltage protection function
11/16/2011	CN202043000U Motor temperature acquisition device with compact integrated structure
11/16/2011	CN202042949U Electrified displaying and temperature monitoring device for ring main unit and junction box
11/16/2011	CN202042919U High-capacity lithium battery pack
11/16/2011	CN202042904U Automatic on-line tracking and monitoring device for capacitance and current of power grid
11/16/2011	CN202042901U Arc suppression coil controller device based on embedded technology
11/16/2011	CN202042889U Line micro computer protection device utilizing inrush current identification technology
11/16/2011	CN202042888U Route selecting device for single-phase ground fault of neutral point inefficient ground system
11/16/2011	CN202042887U Charging input overvoltage protecting circuit
11/16/2011	CN202042886U Banked battery protection circuit
11/16/2011	CN202042885U 3/2 type bridge difference power capacitor device
11/16/2011	CN202042884U Protecting device for start of motor
11/16/2011	CN202042883U Overcurrent and overload protecting circuit
11/16/2011	CN202042882U Circuit capable of realizing variable-frequency speed regulation and temperature protection circuit to fan
11/16/2011	CN202042881U Suspension DR (digital radiography) system and motor driving circuit thereof
11/16/2011	CN202042880U Overcurrent and overheat automatic protecting device for distribution transformer
11/16/2011	CN102246386A Vehicle power supply system
11/16/2011	CN102246374A Method and safety device for monitoring a bus bar of an electrical energy supply grid
11/16/2011	CN102246373A Overload protection of a voltage reduction device
11/16/2011	CN102244380A Open-phase protection method and device of 35kV American box-type substation for wind power station
11/16/2011	CN102244379A Method, device and system for controlling and protecting serial capacitors
11/16/2011	CN102244378A Device and method for protecting IC (integrated circuit)
11/16/2011	CN102244377A Open-phase protection circuit of three-phase motor
11/16/2011	CN102244376A SiC (silicon carbide) deexcitation resistor and manufacturing method thereof
11/16/2011	CN102243956A Protective switch of motor
11/16/2011	CN102243917A Intelligent amorphous-alloy iron-core distribution transformer
11/16/2011	CN102243484A Intelligent protective relaying device
11/16/2011	CN101777790B Reliable power supply circuit of triple redundancy embedded computer system
11/16/2011	CN101594108B Resistance torsion control and battery discharge protection circuit of electric motor
11/16/2011	CN101577426B Power system state estimator applicable to wide area measurement system
11/16/2011	CN101447664B Transformer operation control apparatus and method for suppressing magnetizing inrush current
11/16/2011	CN101313445B Temperature compensation charging control device for electronic equipment
11/16/2011	CN101064480B AC power source converting apparatus and method
11/15/2011	US8059432 PWM controller having drive control with input voltage sensing and method therefor
11/15/2011	US8059431 Switching power supply
11/15/2011	US8058850 Overload control of an electric power generation system with unknown availability of mechanical power capacity
11/15/2011	US8057239 Power module assembly
11/15/2011	CA2456368C Protection circuit for a digital subscriber line device
11/15/2011	CA2317995C Methods and arrangements to detect and respond to faults in electrical power distribution equipment and systems
11/12/2011	CA2739811A1 Automated mechanical disconnection of an electrical converter module in a frequency converter arrangement
11/11/2011	DE202011106714U1 Sprungwellendämpfungs- /Überlastschutz-Optimieranordnung in Reihenschaltung Sprungwellendämpfungs- / overload protection optimization arrangement in series
11/10/2011	WO2011139204A1 Improved surge protection
11/10/2011	WO2011138556A2 Method of controlling the supply of electrical energy of a battery of an occlusion device by a photovoltaic panel and occlusion device comprising a system for such control
11/10/2011	US20110273147 Electric Tap in a Voltage Regulator Circuit
11/10/2011	US20110273122 Motor drive device
11/10/2011	DE102010050836A1 Licht emittierender Treiber Light emitting driver
11/09/2011	CN202034894U IGBT trigger device with redundancy function
11/09/2011	CN202034780U 110kV filter compensation energy-saving set device
11/09/2011	CN202034769U Plastic shell leakage controller for three-phase power supply
11/09/2011	CN202034768U Microcomputer protective relaying device suitable for low voltage power distribution network and system thereof
11/09/2011	CN202034767U Three-phase electrical network over-current monitoring alarm circuit
11/09/2011	CN202034766U Startup and protection control device
11/09/2011	CN202034765U Switch power source short circuit protection circuit
11/09/2011	CN202034764U Safety device and motor
11/09/2011	CN202034763U Ring network cabinet short-circuit protection circuit
11/09/2011	CN102237849A Motor drive device
11/09/2011	CN102237808A Power supply and protection method thereof
11/09/2011	CN102237741A Electric brush carrier assembly for starting engine
11/09/2011	CN102237720A Analysis, early warning and control method for power grid security
11/09/2011	CN102237705A Intelligent charging device for electric vehicles
11/09/2011	CN102237693A Intelligent charging-discharging management system for power battery pack
11/09/2011	CN102237683A Intelligent control system for electromagnetic precise control type electricity-saving device
11/09/2011	CN102237676A Signal distance protection method of direct current power transmission line
11/09/2011	CN102237675A Electronic device
11/09/2011	CN102237674A Protection element and electronic apparatus
11/09/2011	CN102237673A Protection control circuit for strings of series-wound lithium batteries
11/09/2011	CN102237672A System and method for protection of a multilevel converter
11/09/2011	CN102237671A Comprehensive out-of-limit and out-of-control prevention potential limiting counting timing control circuit
11/09/2011	CN101714754B Electric motor protector and control method thereof
11/09/2011	CN101702512B Negative sequence impedance direction protection method for interior failures of stator winding of steamer generator
11/09/2011	CN101662140B Distance switching-in accelerating method self-adapting to oscillation
11/09/2011	CN101662139B Fault phase-selecting method in oscillation of high-voltage line protection
11/09/2011	CN101645596B Protection device for speed regulating branch control cabinet of vibrating motor
11/09/2011	CN101567552B Recognition method of magnetizing inrush current and internal short circuit of power transformer by utilizing morphological structure
11/09/2011	CN101325389B Fan system and detecting device thereof
11/09/2011	CN101252270B Circuit for preventing phase of three-phase power supply from unbalance
11/09/2011	CN101071949B Charge control circuit, charge circuit correction method, charge circuit and electronic device
11/08/2011	US8054598 Negotiating capacity allocation among distributed current protection devices
11/08/2011	US8054026 Short circuit phase identification method
11/08/2011	US8054019 Method and apparatus for controlling a motor
11/08/2011	CA2629827C Motor driving system and motor driving method
11/06/2011	CA2739080A1 Wind turbine with status monitoring system
11/03/2011	WO2011134851A1 Protection of power lines
11/03/2011	WO2011134303A1 Management system for lithium battery
11/03/2011	US20110267853 System and method providing protection in the event of current sensing failure for power converter
11/03/2011	US20110267852 Fault protection in voltage source converters with redundant switching cells via mechanical switches being closed pyrotechnically
11/03/2011	US20110266986 Fault detection method for electric motors with one or several star points
11/03/2011	US20110266984 Power drive control device and power device
11/03/2011	DE102010019116A1 Anordnung zur Netzfreischaltung einer Antriebseinrichtung Arrangement for mains cut-off of a drive device
11/02/2011	EP2269296B1 Drive circuit for a dc motor, comprising an h-bridge and a motor braking circuit
11/02/2011	EP1894284B1 Method and arrangement for monitoring signals
11/02/2011	CN202026268U Direct current brushless motor controller having temperature protection function
11/02/2011	CN202026264U Intelligent auto-coupling voltage reduction starting cabinet
11/02/2011	CN202026129U AC power supply device of marine intelligent diesel engine electric control system

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