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7612507 |
Motor controller
A motor controller capable of appropriately change the drive control condition in response to variations generated in motor drive control. The receiving circuit wirelessly receives and demodulates...
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7602138 |
Driving apparatus and driving system for electric motor
An apparatus for controlling the drive of an electric motor, having a current detector for detecting the current through an externally connected electric motor; a controller for generating a...
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7598698 |
Motor control device
A motor control device includes a current detecting portion that detects phase current of one phase among three phase currents supplied from an inverter to a motor, and a current estimator that...
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7592772 |
Stator inter-turn fault detection of synchronous machines
A fault detection system using field current and rotor search coil voltage harmonics is provided. The technology is capable of detecting an inter-turn fault unambiguously and rapidly in a...
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7579805 |
Semiconductor device
A semiconductor device in which the lifetime of mounted components can be prolonged. A cooling system for controlling the temperature of a refrigerant through a heating section and a radiator is...
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7579800 |
Motor control method and device thereof
A motor control apparatus comprises the amplitude adjustment section and the peak voltage control section so as to adjust the torque control output in correspondence with the output voltage of the...
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7545114 |
Parameterization method for a converter and converter implementing the method
The present invention relates to a parameterization method for a converter ( 1, 2 ) of the speed controller type, the said converter ( 1, 2 ) being connected to an electrical load ( 3 ) by means of...
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7528583 |
Brushless generator
In the m phase brushless generator, n (n<m) phase magnet coil groups are provided with magnetic sensors, while the remaining (m−n) phase magnet coil groups are not provided with magnetic...
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7521888 |
Electric motor controller for a domestic appliance
The invention relates to a three-phase asynchronous electric motor for domestic appliances, comprising power elements, such as triacs or relays, for charge control. The power elements other than...
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7511449 |
Electric motor system implementing vector and slip control
A system is provided for controlling an electric machine. The system has a power source configured to supply electric energy to the electric machine. In addition, the system has an inverter...
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7508637 |
Antilock system for a permanently excited electric motor drive
As an antilock system for a permanently excited electric motor drive, especially for a steering booster servo drive of a motor vehicle, in the event of a winding short-circuit, an interruption of...
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7474068 |
Position detection and external driver multiplexing system for DC motors
A system and method is provided for improved monitoring and controlling of mechanically commutated DC motors. The system and method include DC motors, pulse-count driver circuitry for driving the...
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7474066 |
Method and system for supplying electrical power to a supply bus for an electric vehicle, recording medium, and vehicle for this method
A method for supplying electrical power to a DC supply bus of a rotating electric motor of an electric vehicle is provided. The method includes the steps of selectively supplying electrical power...
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7466087 |
Method and system for adaptively controlling a hybrid vehicle
A method and system for adaptively controlling a hybrid vehicle comprises a recorder for recording a historical load or duty cycle of vehicle during or after operation of the vehicle. A classifier...
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7459878 |
Method and circuit for controlling sensorless single-phase BLDCM
The method and circuit for controlling a sensorless single-phase BLDCM having a stator with a winding are proposed. The provided controlling circuit includes a power supply circuit, an inverter...
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7439700 |
Control system
A control system which is capable of avoiding an overloaded state of an actuator without using sensors or the like. An ECU 2 of the control system 1 calculates a lift control input U_Liftin to...
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7402977 |
Apparatus and method for controlling operation of reciprocating motor compressor
An apparatus for controlling an operation of a reciprocating motor compressor includes a current integrator for integrating an alternating current applied to a motor of the compressor during each...
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7398864 |
Elevator controller
In an elevator control apparatus, a power supply voltage monitoring circuit monitors a power supply voltage supplied to a processing portion. A voltage monitoring soundness checking function...
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7394629 |
Motor overload tripping system and method with multi-function circuit interrupter
A technique is provided for controlling operation of motors of different sized or ratings. Components used to apply and interrupt current to the motors may be shared in control devices for the...
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7391181 |
Loss minimized PWM for voltage source inverters taking into account inverter non-linearity
A dynamic pulse width modulation (PWM) selection device automatically switches between discontinuous PWM (DPWM) control methods. The PWM selection device comprises a PWM control module. The PWM...
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7385368 |
Apparatus for controlling operation of reciprocating compressor
An apparatus for controlling an operation of a reciprocating compressor includes a inductance increasing device connected to a motor of the reciprocating compressor, so that a surge current...
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7362071 |
Rotation control device, rotation control method and construction machine
In an electric rotary excavator (construction machine) 1 , when earth pressure acts on a rotary body 4 in an opposite direction to an instructed direction of a lever, a control-system changing...
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7362069 |
Voltage source inverter control method
A simple and accurate dead time dispersion measurement method and a voltage source inverter control method that can prevent the occurrence of an unstable phenomenon are provided. The control...
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7358694 |
Apparatus and method for determining normal start up of sensorless motor
An apparatus and method determine a start-up of a sensorless motor. The apparatus includes an elapsed time determination unit, a motor velocity determination unit and an abnormal start-up...
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7348756 |
Advanced current control method and apparatus for a motor drive system
An apparatus controls a power converter of an AC motor drive system, the power converter outputting multi-phase AC current to an AC motor. The apparatus comprises: a state selecting unit; and an...
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7332888 |
Driving apparatus for a motor
A motor driving apparatus includes: a current instruction calculator, for calculating a current instruction value based on a deviation between a speed instruction value and an estimated speed...
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7327117 |
PROCESS FOR MEASURING PHASE CURRENTS OF A DEVICE FOR CONTROLLING ELECTRIC MOTORS MADE WITH IMS TECHNOLOGY OR THE LIKE EMBEDDING, FOR SUCH MEASURE, RESISTANCE AND TEMPERATURE CONTROL DEVICE FOR POWER TRANSISTORS
The invention is applied to the field of industrial controls for electric motors and more precisely refers to a process for measuring phase currents of an inverter or a DC controller consisting in...
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7327105 |
Mesh connected electrical rotating machine with span changing
An electrical rotating apparatus is provided that has variable impedance. This is achieved by connecting one of the polyphase components of the apparatus in a mesh connection. The spanning value,...
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7317292 |
AC motor control method and control device
It is possible to control the DC intermediate voltage to be constant without using a device for returning regenerative resistance or regenerative energy to a power source and to safely continue...
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7279865 |
Method and apparatus for monitoring motor status using induced motor voltage
A motor drive unit includes a controller, a voltage inverter, and a speed estimator. The controller is operable to generate at least one command signal for controlling a motor associated with the...
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7276877 |
Sensorless control method and apparatus for a motor drive system
A method and apparatus provide a state observer control system 600 for a motor 106 that uses an extended Kalman filter 330 to predict initial rotor position and afterwards accurately predict...
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7271566 |
Method and system for managing the voltage on the DC bus of a speed controller for an AC motor
A method and system for managing the voltage of a DC bus of a speed controller for an AC electric motor linked to a current distribution network. The method includes comparing a value of the...
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7227330 |
Overvoltage suppression technique for variable frequency drives operating reciprocating loads
A motor control for a reciprocating load includes overvoltage suppression. The motor control comprises a variable frequency drive (VFD) operatively connected to a power source for operating a motor...
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7202617 |
Circuit and method for controlling brushless DC motor
A circuit for controlling a brushless permanent magnet motor is provided. The circuit comprises windings, each of the windings having a first end connected at a common node and each of the windings...
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7199549 |
Feedback parameter estimation for electric machines
A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller executes a parameter estimation process, which is responsive to...
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7187155 |
Leakage inductance saturation compensation for a slip control technique of a motor drive
An electronic drive for vector control of an induction motor controls slip and operating frequency in response to changes in stator voltage. The drive includes a torque control loop, a flux control...
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7183740 |
Motor drive apparatus, vehicle having the same mounted therein, and computer readable storage medium having a program stored therein to cause computer to control voltage conversion
A control device receives a power supply current from a current sensor and a reactor current from a current sensor and detects a maximum value and a minimum value from the reactor current and from...
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7183737 |
Motor control device and motor control method
A motor control device selectively turns on or off a drive transistor in-accordance with a PWM control signal Sp, such that a drive current Im supplied to a motor is adjusted. The device also...
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7180258 |
Controlling current supplied to electric motor of a seat belt retractor
A method and a device for adjusting a supply current, which feeds an electric motor, the torque of which is transferred to a belt reel of a seat belt retractor of a motor vehicle, whereby the motor...
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7164243 |
System and method for establishing motor efficiency during balanced or unbalanced operating conditions
A system and method for establishing a plurality of operating parameters of a multiphase motor. The plurality of electrical parameters may be established from stator resistance data and electrical...
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7138773 |
Multiple inverters for motors
A non-highway vehicle including an engine, a DC power source driven by the engine and providing DC power via a DC bus, a traction motor, a circuit for connection to the DC bus for providing power...
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7135834 |
Modified field oriented control
In accordance with certain embodiments, the present technique provides a reduced current field-oriented-control scheme. For example, the present technique provides a method of controlling an...
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7133602 |
Power supply apparatus, motor drive control method using the same and motor vehicle having the same mounted thereon
A power supply apparatus driving and controlling motor generators (MG 1 , MG 2 ) includes a battery ( 10 ) generating an input voltage (Vb), a converter ( 110 ) converting the input voltage into a...
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7129672 |
Controller apparatus for synchronous motor and controlling method thereof
For providing a controller apparatus for a synchronous motor and a controlling method thereof, enabling to be manufactured, easily and cheaply, and to obtain a lock mechanism, but without necessity...
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7129659 |
Stabilizer apparatus for vehicle
In a stabilizer apparatus for a vehicle, an electronic control unit calculates a target current of an electric motor from vehicle speed, steering angle, and lateral acceleration, and increases and...
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7116077 |
Diagnostic system and method for an electric motor using torque estimates
The present invention can diagnose a potential discrepancy in electrical operating characteristics of a three phase electric motor by generating two independent torque estimates using a plurality...
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7116068 |
Diagnostic system and method for an electric motor using torque estimates
A system and method for diagnosing a potential electrical operating discrepancy in a polyphase electric motor by generating two independent torque estimates using a plurality of current sensors...
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7112931 |
Motor control device and motor control method
An inverter supply voltage generator comprises an inverter supply voltage computing unit 10 , a voltage converter 11 and a battery 12 . The inverter supply voltage generator varies inverter...
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7102324 |
Fixed speed drive
A controller for an electric machine. The controller includes a first voltage input that directly provides a first voltage to the electric machine, a second voltage input configured to receive a...
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7098624 |
Method and system for detecting the disconnection of an auxiliary power supply from a poly-phase motor
To a neutral point of a motor is connected a positive electrode of an auxiliary battery and an auxiliary load. Voltage on a power supply line to the auxiliary load, a neutral point voltage, is...
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