Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 501 - 550 out of 13,736

Document Document Title
WO/2006/088821A3
A circuit for protecting against controller failure wherein the controller provides control signals for controlling a DC to AC inverter fed by a DC bus and driving a permanent magnet motor, the circuit comprising a first circuit for moni...  
WO/2006/026682A3
Systems, methods, apparatus, computer readable medium and propagated signals are provided for controlling the position, orientation, movement, configuration and/or operation of one or more window coverings, doors, vanes, filters or other...  
WO/2005/076989A3
A method for energy storage and recovery for load hoisting equipment powered by an induction hoist motor controlled by a first inverter and having a dual inverter controlling a capacitor utilizing rest power such as reverse power generat...  
WO/2007/023061A2
The invention relates to a pulse resistor for a frequency converter in the higher voltage and capacity range. The inventive pulse resistor is characterized by comprising at least two bipolar subsystems (24) and a resistor element (14), s...  
WO/2005/089257A3
A combined heat and AC power generating system is disclosed having black start capability for the full time, simultaneous production of both electricity and heat. Heat generated within the system is captured and used for heating applicat...  
WO/2007/017043A1
The invention relates to a drive train for a motor vehicle with a serial hybrid drive. The invention also relates to a method for operating a drive train of a motor vehicle with a serial hybrid drive. In order to increase the driving per...  
WO/2007/012358A1
The invention relates to an electric motor (1), in particular for a textile machine, which can be operated as a generator if the supply voltage fails, comprising a rotor which is configured as the armature of the electric motor (1) and a...  
WO/2007/006472A1
The invention relates to a blown film manufacturing installation (15) that has the following characteristics: a blow head (2) from which a tubular film (1) can be extruded; at least one fan (20, 23, 27), with the aid of which air can be ...  
WO/2006/097499A3
The invention relates to a stop brake for railway traction vehicles (1) consisting of at least one electric motor (2) provided with a rotor and stator. Said electric motor is controlled in such a way that the position of the rotor in the...  
WO/2007/000220A1
The invention relates to a device, an electric motor and a method for testing and/or monitoring, comprising a least one electronic circuit, for a brake coil fed with a D.C. voltage of an electromagnetically actuated brake, the D.C. volta...  
WO2005034329A3
A synchronous machine control device for a polyphase synchronous machine (20) includes a phase detection sensor (32) and a control circuit (30, 130). The phase detection sensor (32) is set to 90° advanced. The control circuit (30, 130) ...  
WO/2006/133689A1
The invention relates to a drive for actuating a moving wing, particularly a door. The output element of an electric motor is actively connected to the wing via a power transmission device so that a movement of the output element causes ...  
WO2006020587A3
The present invention relates generally to regenerative braking methods for a hybrid vehicle such as a hybrid locomotive, which are compatible with optimum management of a large battery pack energy storage system. Four methods for recove...  
WO/2006/123839A1
Even when motor control is stopped during generation of the steering auxiliary torque, a sophisticated electric power steering system device controller calculates a steering torque correction shortage amount and applies electromagnetic b...  
WO/2006/123985A1
The invention refers to an apparatus (110) for recyclable absorption of electric retardation energy from a multiple axis industrial robotics system (100) , comprising a robot control unit (120) and at least one drive unit (104-106) which...  
WO2005119050A3
The invention relates to ametod and apparatus (10) for obtaining a desired power out from an electrical load by supplying a sufficient pulse time modulation energy to the device to replace only losses and to maintain only residual power,...  
WO/2006/106003A1
The invention relates to a device and a method for controlling an electromechanical power converter (10), particularly of an electric motor and/or generator in which comparatively cost-effective switches (14, 18) can be used without dras...  
WO/2006/106530A2
The present invention provides an S SRM (switched reluctance machine), which supports one or more phases and each phase comprises a stator, a rotor and coils. The stator is hollow, cylindrical and comprises stator poles extending inwards...  
WO2006028861A3
A variable speed electric motor to drive a variable load over a substantially continuous range of speed. The motor has a plurality of winding combinations that may be switched into and out of the motor circuit. A torque controller select...  
WO/2006/088969A2
A bi-directional sensing edge includes a mounting member for securing the sensing edge to a leading member of a gate. An elongate outer sheath has at least first and second portions each respectively corresponding to first and second sid...  
WO2005108269A3
A controller for a variable frequency drive monitors electrical power from a variable frequency drive motor while a brake is maintaining a load driven or moved by the motor without requiring additional feedback components of a closed loo...  
WO/2006/078306A2
Kinematic control of an electronic positioner and its associated actuator is effected through a control algorithm that delivers energy to the actuator based on observed motion produced by a previous delivery of energy. The algorithm achi...  
WO/2006/075795A1
In response to a system-off instruction, the drive system control technique of the invention controls individual motors of an electric cooling water pump and an electric cooling fan to stop (step S100), waits for elapse of a preset refer...  
WO/2006/074627A1
The invention relates to a power supply device for an electric motor, operated either in a normal operating mode and/or an emergency operating mode, in particular, for an actuator in a motor vehicle and a method for operation of an elect...  
WO2006035194A3
A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting...  
WO2005048055A3
A system and method for facilitating patent grant and patent application claims examination; including the functions of automated importing of patent claims, automated parsing of the claims into their hierarchy, and compression/expansion...  
WO/2006/068482A2
The invention relates to a control circuit for controlling a DC voltage power supply, whereby the control circuit comprises a switching element connected in series to the motor and a bypass switch connected in parallel to the electromoto...  
WO2006039626A9
A single controllable switch (509) drive system for regulating the speed of a two-phase switched reluctance machine (TPSRM) (700) rotor may include a speed control feedback loop (970) component that uses an established speed control sign...  
WO/2006/058574A1
The invention relates to a method for controlling the flow of energy in a drive, and to a drive comprising at least one motor, at least one energy accumulator and at least two consumers and/or accumulators connected to this energy accumu...  
WO/2006/057548A1
The invention relates to a switch circuit for an electric tool, for instance a circular saw, fretsaw, right-angle grinder or a drill. The tool comprises a motor and operating means for selectively connecting the motor to a power source. ...  
WO/2006/056352A1
The invention relates to an electromechanical drive, which is actuated by a current supply and is displaced against a stop in order to be disconnected. According to the invention, once the current supply has ended and the electromechanic...  
WO/2006/048023A1
A drive mechanism has a reversible electric motor, which can be short-circuited to stop the rotation of the motor. Hereby higher precision can be achieved. A magnetic brake has a rotor, which has one or more neutral angular positions rel...  
WO2006039626A3
A single controllable switch (509) drive system for regulating the speed of a two-phase switched reluctance machine (TPSRM) (700) rotor may include a speed control feedback loop (970) component that uses an established speed control sign...  
WO/2006/045379A1
The invention relates to a device for the reliable control of an electromagnetic brake, comprising a brake coil which can cause the brakes to be released, counteracting the spring force of spring elements, when supplied with a current. S...  
WO/2006/040953A1
A motor driving circuit (3) comprises a plurality of pairs of power-supply-side driving transistors (15,16) and ground-side driving transistors (17,18) that drive a coil (9) from a midway point; a driving current detecting part (19) that...  
WO/2006/035194A2
A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting...  
WO/2006/035959A1
A power output apparatus (100) generates a commercial AC voltage (Vac) across neutral points (N1, N2) of first and second motor generators (MG1, MG2). The power output apparatus (100) includes a leakage detecting device (40), and upon de...  
WO/2006/034217A1
A battery-powered vehicle for transporting a mined payload or supplies over the roadways existing in or around an underground mine, includes variable voltage, variable frequency drivers that convert DC voltage from a battery into an AC v...  
WO/2006/034318A1
A method of controlling a power converter (20) of a motor drive system (10) controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power converter commands to control torque curre...  
WO/2006/028861A2
A variable speed electric motor to drive a variable load over a substantially continuous range of speed. The motor has a plurality of winding combinations that may be switched into and out of the motor circuit. A torque controller select...  
WO/2006/023020A1
System for braking either linear or rotary electric motor having no permanent magnets comprising at least one servo amplifier and an electronic circuit for generating a pulsed control signal for controlling the braking of the motor. The ...  
WO/2006/002578A1
A quick brake apparatus includes a bracket, a motor and a bearing base fixed on the bracket, and a shaft which has rotating parts and couples with the bearing base, as well as a transmission mechanism with smaller, greater pulley. Bearin...  
WO/2006/004037A1
An inverter capable of reducing the speed of even an easily magnetically saturable AC electric motor for a short time period without causing any overcurrent. A motor driving frequency is operated with a detected value obtained by passing...  
WO/2005/099081A1
The invention relates to a circuit arrangement and a method for the short-circuit braking of a direct-current motor (M), especially a cooling fan motor for a motor vehicle, which is excited by permanent magnets and can be connected to a ...  
WO/2005/096489A1
An AC motor can be decelerated in as a short time as possible by means of an inverter and the current is controlled below a predetermined value so that the inverter does not stop because of an overcurrent or the AC motor does not fail du...  
WO/2005/096488A1
Disclosed is a drive unit comprising at least one brake and an electric motor that is connected to an output stage by means of supply lines. The brake is supplied from a brake triggering mechanism. In order to supply said brake triggerin...  
WO/2005/090216A1
An elevator controller having an ordinary structure where the generated power in regenerating operation is consumed by a resistor chopper (18) additionally comprises an electric double-layer capacitor (21) connected parallel to a DC capa...  
WO/2005/089257A2
A combined heat and AC power generating system is disclosed having black start capability for the full time, simultaneous production of both electricity and heat. Heat generated within the system is captured and used for heating applicat...  
WO/2005/088827A1
There is provided a motor including magnetic pole means having a plurality of coil strings alternately excited to different poles to which is faced a permanent magnetic pole string having permanent magnetic pole elements of alternately d...  
WO/2005/081396A1
A DC braking method for stopping an induction motor, wherein during a shift from a normal control state to a DC braking state, the torque shock caused by an abrupt change in the output current phase is suppressed below a predetermined va...  

Matches 501 - 550 out of 13,736