Air conditioner AC machine driving method and circuit A method for driving AC motor of air-conditioner includes calculating pulse width of zero cross detection when power supply is initialized, holding low level at fan driving port and calcu...
Special DC speed regulator for blood irradiator A DC speed controller used specially on blood radiator is prepared as connecting input end of level conversion circuit to external interface and its output end to input end of monolithic ...
Straight opening bucket scrubbing device A direct opening barrel washing devices aims to provide a mechanical cleaning method to improve production efficiency and reduce the intensity of labor. One end of the main frame has inne...
Three-phase wound-rotor induction motor A three-phase wound-rotor induction motor is prepared as setting triangle three-phase stator winding on stator and connecting wire outgoing end at top to wire outgoing end of three-phase ...
Electronic control windshield wiper The invention relates to an electric windshield wiper, wherein it is formed by windshield wiper controller, motor and windshield wiper executor; the windshield wiper controller comprises ...
17
200610164585
Control device of electric motor An electromotor which is optionally rotated due to interference and the like is controlled in a 180 degree power-on manner, thereby all objects of low cost, space saving, low libration, h...
18
200610166735
Field winding synchronous generator-motor A field winding synchronous generator-motor disclosed in the invention includes: a power conversion section that is connected to an electric rotating machine and operating as a generator-...
Method of estimating load inertia for a motor A method of estimating load inertia for a motor is provided that can estimate the load inertia even when a cogging torque of the motor is large or resonance occurs in the mechanical syste...
21
200610163736
Motor driving control device In a motor driving control device, a high-frequency alternating voltage or rotation voltage (having a frequency of omegah) is applied to a motor so that magnetic saturation occurs in the ...
Motor controlling circuit and method A motor control circuit includes: a detector outputting a detection signal in accordance with the motor rpm; a counter counting the number of clocks in accordance with a rotational cycle ...
25
200610163053
Pulse width modulation method A method is describes for the pulse width modified control of switching elements in a frequency converter having N phases, in which for each phase the control pulses of the switching elem...
26
200610166720
Method for controlling AC motor An inverter that supplies a desired primary voltage (v1) to an induction motor, a current detector that detects a primary current (i1) from the inverter to the induction motor, a voltage ...
27
200610136757
Control method for linear induction motor This invention discloses one line sensor motor control method, which gets line sensor motor initial magnetic linkage real value and linkage rate according to the input voltage of line sen...
28
200610163505
Motor driving device and automobile using the same The invention relates to, as a boosting-type motor driving device using no reactor, a motor driving device capable of controlling boosting operation and motor driving at the same time is ...
29
200610172959
System and method for common system and wind turbine control An exemplary embodiment includes a wind turbine system (10). The wind turbine system (10) includes a wind turbine generator (18) operable to supply wind turbine power to a utility system ...
30
200610109999
Semiconductor device and motor having the same and motor driver A motor drive semiconductor devic is fomed by resin-sealing one or more semiconductor chips in one package. The semiconductor device includes six switching elements for driving the three-...
Refrigerator and control method of the same The invention provides a refrigerator having a compressor, the refrigerator including: a motor driving the compressor; a motor driver supplying power to the motor; and a controller output...
37
200610160568
Motor drive device A motor drive device, for driving an electric motor having a bearing for rotatably supporting an output shaft, has a drive circuit which drives the motor when a voltage level at a signal ...
38
200610146719
Control device of brushless electromotor There is provided a DC control device of brushless electromotor driven by a load which loading torque exhibits a periodic variation, such as a compressor used for an air conditioner, with...
Method to measure the angular speed of an induction motor The invention relates to a method for determining the electric angular speed of a rotor of an induction motor, wherein electric power supplied to phases of a stator of the induction motor...
Electric reciprocating moving unit The invention is concerned with a kind of dynamoelectric reciprocating movement equipment. It relates to shell, fixed bracket outside of the shell, electromotor fixed on it, electrical so...
Precision current sensor used for electric machine control A current transducer used for controlling motor consists of a signal regulation unit including a differential amplifier and a voltage reference unit; a signal transmission unit including ...
48
200610097465
Motor driver of biconvex poles The motor driver includes the DC power supply, the filter consisting of two serial-connected split type capacitors and the 1st and 2nd bridge arms of converter consisting respectively of ...
Motor driving device A motor driving device is disclosed that includes a first drive circuit that drives a first electric motor and increases a rotational speed of the first electric motor according to an inc...
Motor control apparatus A motor control apparatus includes a current target value computation unit which computes a target value of a current to be passed through a motor; a current detector which detects the cu...
54
200610129326
Embedded excited control system The invention is a power system synchronous generator embedded exciation control system, adopting coordinating design concept to analyze and reasonably divide software/hardware so as to m...
Exciting method of vector control of synchronous motor The invention discloses a vector control synchronous motor exciation method, using a set of specially designed vector value digital detection circuit of digital rotor AC commpoent to accu...
57
200610138228
Driving method and device for permanent magnetic motor rotor This invention relates to a drive method for permanent magnet motor rotors and a device including a rotor and a stator relatively fixed to the shell, in which, the rotor is a pair of axia...
58
200610142863
Power transformation device The circuit asymmetry character between electric components with parallel connection are restrained in a power transformation device. In the present inventive power transformation device...
Low voltage AC soft starting method This invention relates to a control method for belt transporting machines, especially to a low voltage AC soft start up method used in mines with methane and explosive grimes.
62
200610134094
Linear motor operating mechanism of high-voltage breaker This invention relates to one high voltage breaker linear motor operation structure, which belongs to transducer device technique field, which comprises linear motor and its servo control...
63
200610163565
Audible noise reduction for single current shunt platform A method and system for reducing audible motor noise in a system for reconstructing motor phase current from a DC bus current comprising current pulses on a DC bus, and for controlling th...
Detection of islanding in power grids A method for detecting islanding conditions in an electrical grid having a power line voltage includes monitoring a detectable signal (306) different from the power line voltage at a gene...
Single-phase asynchronous motor protector This invention provides a single-phase asynchronous motor protector, after a d trigger as the core element and a single-phase AC of 220V are accessed into said protector, one of the phase...
Vehicle electric booster steering system controller The force-assistance executor is a DC permanent magnet motor with brushes and supplies by 12 V battery system. The controller consists of micro-controller module, signal processing module...
75
200610113708
Coutrol device for electric booster steering system This device consists of the micro-controller module, signal processing module, power supply module, signal distributing module, H bridge circuit, motor current testing module, etc. The si...
Apparatus and method for controlling brushless DC motor Disclosed is a control apparatus for a brushless DC motor, which has a rotor with n poles (where n is a natural number) that rotates due to a supply current with m phases (where m is a na...
Method for making brushless DC velocity measuring dynamo This invention discloses one integral brushless direct speed test motor and its process method, which imbeds with motor set and speed motor set to make brushless direct motor and brushles...
80
200610141643
Motor drive device and drive method A reverse current detection unit detects the direction of the motor current during the synchronous rectifier period based on the polarity of the on voltage of a switching device contained...
Motor drive device and drive method A rise in the power supply voltage as a result of a sudden speed reducing command causing the motor current to flow to the power supply is prevented. The motor drive device has a drive si...
Electricity saving device of full automatic three-phase motor It consists of the power factor generation circuit (PFG), the signal amplification circuit (SA), the trigger circuit (TR) and the bridge rectification circuit group (BRG). The input end o...
Electric power generation control apparatus An electric power generation control apparatus is connected to an external controller composed of a vehicle interface circuit capable of generating and transferring a power switch-on sign...
Wiper of working machine The present invention provides a wiper device of working machinery capable of wiping both of a left upper part and a right upper part of a front window of a cabin of the working machinery...
90
200610141624
Self powered gate driver system The invention relates to an apparatus and method used to charge a self powered gate driver system. The apparatus may include a current loop for inducing a current in a coil. A bridge rect...
Steering device for vehicle A motor vehicle steering system of the invention includes a motor driving circuit connected between a power supply and a ground for driving a multi-phase motor, PWM signal generating mean...
95
200610139320
Brushless DC motor and manufacturing method thereof A brushless DC motor includes an embedded memory of a micro computer mounted on a circuit board which can be modified during and/or after a manufacturing process of the brushless DC motor...
96
200610048314
Low power consumption rotating magnetic motive machine This invention relates to low consumption magnetic motor, which comprises rotor, stator and power circuit, wherein, the rotor circle is distributed with 2 2n pieces of permanent magnetic ...
97
200610139249
Rotor position detection in an electrical machine An electrical machine is controlled with a combination of a physical rotor position transducer and a software position detection algorithm. The physical transducer has a reduced number of...
98
200610010578
DSP-based electric machine position servo device A servo device of motor position based on DSP consists of brushless DC motor being used as servo motor as its servo device being suitably set on digital control system requiring position ...
99
200610032245
Combined type wind power magneto alternator This invention discloses one compound wind force permanent step motor, which comprises shell and stator and rotor inside, wherein, the said stator comprises inner stator and outer stator ...
100
200610041551
DC motor controller based on FPGA This invention relates to one direct current motor control, which uses FPGA as center to integrate motor drive wave, loop control computation, upper communication function to use ROM self...
