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MAGNETIC SENSOR AND AN INTEGRATED CIRCUIT
The present teaching relates to a magnetic sensor residing in a housing. The magnetic sensor includes an input port and an output port, both extending from the...
CONTROL DEVICE FOR AN ELECTRIC MACHINE, METHOD FOR CONTROLLING SAID
ELECTRIC MACHINE, AND MOTOR CONTROLLER
The present invention discloses a control device for an electric machine comprising a sensor interface designed to receive a sensor signal from a position...
CONTROLLER FOR ELECTRIC MOTOR
A feedback amount calculation unit uses a deviation of a current from its command value or a deviation of an air-gap flux from its command value to calculate a...
MOTOR DRIVING CIRCUIT WITH POWER REVERSAL PROTECTION AND FAN DEVICE
A motor driving circuit with power reversal protection and a fan device are disclosed. The motor driving circuit has a supply end and a ground end. A reversal...
FAN DETECTION AND CONTROL CIRCUIT AND ELECTRONIC DEVICE HAVING THE SAME
A fan detection and control circuit for a storage device includes an extension chip configured to output a control signal, a plurality of transmission units, a...
ROTATING ELECTRIC MACHINE CONTROL DEVICE
A rotating electric machine control device includes: a q-axis PI controller calculating a pre-restriction q-axis voltage instruction value based on a q-axis...
DRIVING DEVICE FOR MOTOR FOR DRIVE WHEEL OF VEHICLE
A driving device for motors for drive wheels of a vehicle includes a plurality of in-wheel motor assemblies and motor drivers. The motor drivers include a...
DRIVE DEVICE AND METHOD FOR OPERATING A DRIVE DEVICE
A drive device comprising at least one control unit (10) for operating a first drive unit (16) with a first operating frequency (f.sub.b1) from a first...
CONTROL METHOD FOR STARTING A SYNCHRONOUS ELECTRIC MOTOR
The invention relates to a control method implemented in a variable speed drive for starting a synchronous electric motor (M), said method comprising the...
PIEZOELECTRIC ACTUATOR, MOTOR, ROBOT, AND METHOD OF DRIVING PIEZOELECTRIC
The invention relates to a piezoelectric actuator including: a first piezoelectric vibrator including a first diaphragm and first piezoelectric elements that...
VIBRATION WAVE MOTOR AND DRIVER UTILIZING THE VIBRATION WAVE MOTOR
The dimension in a moving direction of a vibration wave motor is shortened without impairing the thrust force, and the size of a driver is reduced. The...
Power Semiconductor Circuit having a Field Effect Transistor
A power semiconductor circuit comprising a field effect transistor having a drain, a source and a gate as terminals, and further comprising a control device...
POWER CONVERSION DEVICE AND POWER CONVERSION CONTROL METHOD
Provided is a power converter capable of reliably turning OFF a switching element before turn-OFF of a diode even with a fluctuation in rpm so as not to...
CONTROL METHOD OF INVERTER CIRCUIT
A control method of an inverter circuit includes the following steps. Firstly, a half cycle of the AC output voltage is divided into a first stage and a second...
Power Conversion System
A surge according to a change of a switching state can be reduced without increasing a torque ripple of a motor. A first switching signal to control switching...
In a power converter a DC positive terminal of a DC power supply is connected to a switching element, the DC negative terminal of the DC power supply is...
MODULAR MULTILEVEL CONVERTER LEG WITH FLAT-TOP PWM MODULATION, CONVERTER
AND HYBRID CONVERTER TOPOLOGIES
A voltage source converter for interconnecting first and second electrical networks, including first and second terminals for connection to the first...
CONVERTER AND POWER CONVERSION DEVICE
A converter includes a converter circuit that converts the AC voltages supplied from the A-connection and the Y-connection, which are two systems of a 12-phase...
DIFFERENTIAL AMPLITUDE DETECTOR
An example embodiment includes an idle state detection circuit. The idle state detection circuit includes a bias current loop, a rectifying circuit loop, a...
UNIDIRECTIONAL MATRIX CONVERTER WITH REGENERATION SYSTEM
An AC-to-AC matrix converter includes a controlled rectifier input stage, an inverter output stage, and a regenerative unit. The controlled rectifier input...
POWER SUPPLY APPARATUS AND IMAGE FORMING APPARATUS
The power supply apparatus includes a control unit that can perform intermittent operation of alternately repeating a switching period and a switching halt...
MULTI-OUTPUT POWER CONVERTER WITH PHASE-SHIFT CONTROL
A multi-output power conversion circuit employing phase-shift control, receiving at the input a DC voltage and supplying at the output a plurality of...
CONTROL OF A STARTUP CIRCUIT USING A FEEDBACK PIN OF A PWM CONTROLLER
INTEGRATED CIRCUIT CHIP
A power supply includes a control transistor that controls a primary winding of a transformer to induce current on a secondary winding of the transformer to...
CONTROL DEVICE AND CONTROL METHOD FOR POWER SUPPLY DEVICE
A control device and method are provided for a power supply device which can perform stable constant voltage constant current control with high responsiveness...
Electrical Power Converting Device
An electrical power converting device includes: a converter circuit part that includes a switching circuit and a transformer and converts a voltage between a...
VOLTAGE CONVERSION DEVICE AND METHOD OF OPERATION
A voltage conversion device includes a transformer and at least one transistor. The transformer has a primary side and a secondary side, the secondary side...
CONTROL CIRCUIT AND METHOD OF A POWER CONVERTER
A feedback signal stabilized by a capacitor and related to an output voltage of a power converter is used to acquire the output power information of the power...
SYSTEMS AND METHODS FOR REGULATING POWER CONVERSION SYSTEMS WITH OUTPUT
DETECTION AND SYNCHRONIZED RECTIFYING...
System and method for regulating a power conversion system. An example system controller includes: a first controller terminal and a second controller...
BUCK-BOOST CONVERTER AND CONTROL CIRCUIT THEREOF
A buck-boost converter and a control circuit thereof are disclosed. When an input voltage is close to an output voltage (i.e., the buck-boost converter...
HIGH EFFICIENCY SWITCHING BOOST CONVERTER WITH REDUCED INDUCTOR CURRENT
A voltage or current regulated power converter is presented. The power converter is configured to derive electrical power at an output voltage V.sub.out at an...
BOOST CONVERTER CIRCUIT AND A METHOD FOR CONTROLLING A BOOST CONVERTER
A method for controlling a boost converter which generates an output voltage according to an input voltage. The boost converter includes an inductor, a first...
POWER REGULATOR HAVING CURRENT AND VOLTAGE MODES
A power supply is configured to automatically and rapidly switch from a voltage maintaining mode to a current limiting mode (at times that are unpredictable...
SYSTEM AND METHOD FOR PREVENTING UNDESIRABLE SUBSTANTIALLY CONCURRENT
SWITCHING IN MULTIPLE POWER CIRCUITS
A power system includes a first charge pump configured to supply power, and control circuitry coupled to the first charge pump. The control circuitry is...
RF EMISSION SPECTRUM RANDOMIZATION AND TARGETED NULLING FOR AN ELECTRONIC
In an example, a processing system for an electronic device, such as a capacitive sensing device, includes a reservoir capacitor configured to store charge...
CURRENT BALANCE CIRCUIT AND THE METHOD THEREOF
A current balance circuit for a power management device having a first current channel and a second current channel, having: a first current sense circuit...
In a power converter including at least one bridge circuit configured to have upper and lower arms in which a first power semiconductor device and a second...
DIFFERENTIAL PROTECTION METHOD FOR BRIDGE CIRCUIT IN CURRENT CONVERTER
The present invention relates to a differential protection method for bridge circuit in current converter control system, including the steps of: 1). obtaining...
IN SITU OVERVOLTAGE PROTECTION FOR ACTIVE BRIDGE APPLICATIONS
An overvoltage protection device protects a half bridge circuit that receives a supply voltage. The overvoltage protection device includes a high speed...
Determination of Phase Offsets in a Supply System having Multiple
A controller, and related method, to control switching elements of a plurality of voltage converters of a power system. The controller receives a signal...
COMMON MODE AND DIFFERENTIAL MODE FILTER FOR AN INVERTER AND INVERTER
COMPRISING SUCH FILTER
A differential and common mode filter for an inverter, comprising an inductor having a core. The core comprises: an upper joke and a lower joke which comprise...
ELECTRIC POWER CONVERSION APPARATUS
A single-phase AC/DC electric power conversion apparatus includes an indirect matrix converter having an input interface to receive a first alternating current...
POWER CONVERTER SYSTEM HAVING ACTIVE STANDBY MODE AND METHOD OF
CONTROLLING THE SAME
A power system having a plurality of operating modes including an active mode and an active standby mode includes a power converter and a controller the power...
Zero-Voltage Transition in Power Converters with an Auxiliary Circuit
An auxiliary circuit may be used to assist in the operation of a power converter to obtain zero-voltage switching. For example, an auxiliary circuit including...
BUS CAPACITOR BANK CONFIGURATION FOR A MULTI-LEVEL REGENERATIVE DRIVE
A regenerative drive device and a method for configuring the DC link of a regenerative drive device are disclosed. The multilevel regenerative drive device may...
EDDY CURRENT RETARDER WITH ELECTRICITY GENERATING FUNCTION
An eddy current retarder includes a brake drum, a magnet retention ring, and a switch mechanism. The brake drum is fixed to a rotating shaft. The magnet...
FLUX FOCUSING MAGNETIC GEAR ASSEMBLY USING FERRITE MAGNETS OR THE LIKE
The present invention relates generally to a flux focusing magnetic gear assembly using ferrite magnets or the like. The present invention also relates...
POLE-PIECE STRUCTURE FOR A MAGNETIC GEAR
The disclosure provides a pole-piece structure for a magnetic gear, comprising a plurality of laminate plates, wherein each plate is a metallic ring having a...
MAGNETIC COUPLING ASSEMBLY
The invention relates to a magnetic coupling assembly for associating a first rotatable shaft to a second rotatable shaft, the magnetic coupling assembly...
BISTABLE ELECTROMAGNETIC ACTUATOR AND SURGICAL INSTRUMENT
A bistable electromagnetic actuator including: a tube; a stator arranged outside of the tube; and a rotor mounted in the tube so as to be displaceable along...
VIBRATION MOTOR AND MOBILE COMMUNICATION APPARATUS
A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a magnet portion fixed above...