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Patent Searching and Data


Matches 401 - 450 out of 13,503

Document Document Title
WO/2008/007120A2
An electric motor includes one or more separate coil sets arranged to produce a magnetic field of the motor. The electric motor also includes a plurality of control devices coupled to respective sub-sets of coils for current control. A s...  
WO/2008/004177A2
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/004178A2
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/001450A1
When connecting a plurality of regenerative braking devices to a power supply device such as an inverter device, even if operations levels of the respective devices have parts tolerances, it is possible to uniformly operate the respectiv...  
WO/2007/145351A1
While charging an accumulation device from a commercial power source, the power from the commercial power source is given to each of the neutral points of a first and a second motor generator. A rotation suppression control unit (222) de...  
WO/2007/143998A1
An actuator comprising a reversible electric motor, which over a gearing, drives an activation element which can move back and forth. The activation element is of the non-self-locking type. Furthermore the motor and gearing are of a non ...  
WO/2007/134605A1
A method is disclosed for starting an electric motor (2), in which the motor (2) is supplied with current (4) via a starting circuit (1) having multiple paths (5, 6, 7), and the current (4) is conducted through various paths (5, 6, 7) on...  
WO/2007/134558A1
The invention relates to an electrical drive unit having an electric motor (1) and a brake for producing a mechanical braking torque. In order to make controlled mechanical braking of the electric motor (1) possible with as little comple...  
WO/2007/121889A1
The invention relates to a control system for a permanent-field electric motor (1) and corresponding method. When a function computer (3) and/or a monitoring computer (4) recognises an error in the control system, the electric motor (1) ...  
WO/2007/118576A1
A circuit for operating a coil of an electrically released safety brake to connect to alternating current supplies with different operating voltages (preferably mono-phase) comprising: a rectifier circuit connected to the input terminals...  
WO/2007/023061A3
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/2007/101745A1
The invention relates to a diesel-electric drive system comprising a permanently excited synchronous generator (4), which is mechanically coupled to a diesel motor (2) on the rotor side and has an electrical connection to a voltage link ...  
WO/2007/099913A1
An elevator control device converts an AC power into a DC power by a rectifier (3), converts it into AC power by an inverter (5), and supplied the AC power via a power line (10) to field windings (32R, 32S, 32T) of a motor (16) synchroni...  
WO/2006/078306A3
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/2007/085566A1
The invention relates to a process using a pulse-width modulated inverter (2) for switching off an electrical machine (1) in the event of a malfunction. Undesirable side effects caused by switching off the electrical machine can be minim...  
WO/2007/064381A3
A system and a method for supplying electrical energy to high-power vehicle braking resistors to generate heat for supplemental heating. Supplemental heat is transferred from the braking resistors to a desired use by means of circulating...  
WO/2007/079950A1
The invention relates to a method for testing the brake function of a robot drive (10), wherein the robot drive is operated in a position-controlled manner. The brake is actuated during the running of the robot drive. After a predetermin...  
WO/2007/049810A1
In a system for driving an AC motor in which motor current is feedback-controlled, normally, a motor current instruction is generated according to a torque instruction value on the optimal efficiency characteristic line (CL0) so as to se...  
WO/2006/106530A3
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...  
WO/2007/042732A1
The invention concerns an electromechanical system (1) designed to be connected to a power grid (7), comprising: an electrical machine (2) capable of operating as a stand-alone power generator, including a rotary shaft, and a switching s...  
WO/2007/039377A1
The invention relates to a control system for a permanently excited electric motor, comprising at least one phase. Said system comprises a first half-bridge arrangement for each phase of the electric motor. The control system comprises a...  
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...  

Matches 401 - 450 out of 13,503