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MOTOR CONTROLLER, SHEET CONVEYING DEVICE, AND IMAGE FORMING APPARATUS
A motor controller includes a drive control portion. The drive control portion is configured to: execute feedback control of a drive current to be supplied to...
Reduced is occurrence of hunting in which a power factor corrector continuously turns on and off alternately for a short period of time. A power factor...
VARIABLE SPEED DRIVE WITH TOPSIDE CONTROL AND SUBSEA SWITCHING
According to some embodiments, functionality of a conventional variable speed drive (VSD) for driving a subsea electric motor is "split" with the CPU with...
MULTI-PULSE CONSTANT VOLTAGE TRANSFORMER FOR A VARIABLE SPEED DRIVE IN
A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input...
Hybrid Soft Switching for Current Regulation in Switched Reluctance
A method of regulating a phase current of an electric motor is provided. The method may include selectively enabling one or more switches of each phase of the...
The current document is directed to various types of oscillating resonant modules ("ORMs"), including linear-resonant vibration modules, that can be...
LOAD TORQUE ESTIMATION APPARATUS, IMAGE FORMING APPARATUS, LOAD TORQUE
ESTIMATION METHOD AND RECORDING MEDIUM
A load torque estimation apparatus includes an acquisition unit configured to acquire a smoothed signal, the smoothed signal being obtained by smoothing a...
CONTROL DEVICE FOR ROTATING ELECTRICAL MACHINE
A rotating electrical machine has a rotor having a field winding and a stator having an armature winding. A control device adjusts a field current flowing in...
METHOD AND SYSTEM FOR CONTROLLING AN AUTOMOTIVE VEHICLE THREE-PHASE
ELECTRIC MACHINE SUPPLIED VIA CHOPPED VOLTAGES
A system for controlling an automotive vehicle three-phase electric machine supplied via chopped voltages, including: a mechanism determining settings of...
VARIABLE-SPEED OPERATION CONTROL APPARATUS AND HYDROELECTRIC POWER
According to one embodiment, there is provided a variable-speed operation control apparatus of a hydroelectric power generation system including a power...
DRIVING SYSTEM, APPARATUS AND METHOD FOR SPINDLE MOTOR
A driving method for a spindle motor and associated driving system and apparatus are provided. The driving method includes the following steps. Plural...
MOTOR DRIVING DEVICE, METHOD FOR CONTROLING MOTOR, AND CALCULATION DEVICE
FOR CALCULATING ANGLE INFORMATION OF...
Provided is a motor driving device. The motor driving device includes a motor controller configured to output a first phase signal, a second phase signal, and...
ROTOR POSITION ESTIMATION APPARATUS AND METHODS
Motor drives, methods and estimation systems are presented for estimating a rotor position of a motor load in which four sets of inverter output current...
METHOD, APPARATUS AND SYSTEM FOR OPERATING A ROTATING ELECTRIC MACHINE
The invention provides a method, an apparatus and a system 1 for operating a rotating electric machine. The method has the following steps: defining (S01) a...
DIRECT-CURRENT POWER SUPPLY DEVICE, MOTOR DRIVING DEVICE, AIR CONDITIONER,
A direct-current power supply device includes a rectifier connected to a power supply, a charge storage unit configured by a first capacitor and a second...
MULTI-PHASE MOTOR CONTROL APPARATUS AND ELECTRIC POWER STEERING APPARATUS
USING THE SAME
A multi-phase motor control apparatus that reduces the occurrence of the vibrations and the noises by setting the shift amount per time more finely after...
A power converter that reduces a ripple of a torque and a ripple of an electric current in a switch period, having a controller including an instruction...
A power converter a controller that includes an instruction calculator calculating a first voltage instruction value that is applied to a first winding group,...
SHREDDER LOAD OPTIMIZATION SYSTEM AND METHOD
An electrical power load optimization system operable to regulate a power supply to one or more industrial machines so that a load imposed on the power supply...
ELECTRIC MOTOR CONTROL DEVICE
The electric motor control device includes: an inverter circuit 20 which converts DC power of a DC power supply 90 into AC power; and a switching control...
METHOD AND APPARATUS FOR IDENTIFYING DISCHARGE FAILURE OF A PIEZOELECTRIC
The present disclosure discloses a method and apparatus for identifying discharge failure of a piezoelectric circuitry. The apparatus comprises a piezoelectric...
An energy collection system may collect and use the energy generated by an electric field. Collection fibers are suspended from a support system. The support...
HYBRID CIRCUIT DEVICE
A circuit device comprises a circuit board and a plurality of leads each comprising an island portion, a bonding portion elevated from the island portion, and...
RENEWABLE ENERGY POWER GENERATION SYSTEMS
We describe a modular adjustable power factor renewable energy inverter system. The system comprises a plurality of inverter modules having a switched...
METHOD TO CONTROL THREE-PHASE INVERTER VOLTAGE
A method is provided to control the output voltage across an unbalanced load connected to a three-phase inverter, The method includes transformation of a set...
VOLTAGE SOURCE CONVERTER
A voltage source converter includes DC terminals, a plurality of single-phase limbs, and a controller. Each single-phase limb includes a phase element and...
Circuit Arrangement with a Rectifier Circuit
In accordance with an embodiment, a method includes receiving by a drive circuit electrical power from a voltage tap of a first rectifier circuit that includes...
RECTIFYING CIRCUIT FOR HIGH-FREQUENCY POWER SUPPLY
Disclosed is a rectifying circuit for high-frequency power supply that rectifies an alternating voltage at a high frequency equal to or higher than 2 MHz, the...
Power Conversion Apparatus
A module of conversion circuit includes a High side IGBT, a Low side IGBT connected in series to the High side IGBT, a first terminal connected to the High...
Power Conversion Apparatus
A power conversion apparatus that is configured by a plurality of conversion circuit modules which are connected to each other in parallel, includes a first...
An inverter device applies an excitation current to an excitation winding of a step-up transformer through a switching element, and outputs an output voltage...
CONTROL METHOD FOR DIRECT POWER CONVERTER
A converter performs full-wave rectification on a single-phase voltage, thus outputting a rectified voltage across DC power supply lines. An inverter receives...
MOTOR DRIVE WITH LCL FILTER INDUCTOR WITH BUILT-IN PASSIVE DAMPING
RESISTOR FOR AFE RECTIFIER
Power conversion systems, filter circuits and integrated filter resistor and inductor apparatus are presented, in which a damping resistor is integrated with a...
DC-DC Converter Apparatus
To achieve reduction in size and reduction in cost of a DC-DC converter apparatus. Rectifier elements and are installed onto a metal base, and a drive circuit...
Switching Power-Supply Device
A switching power-supply device includes: a transformer including a primary coil and a secondary coil; a rectifying-and-smoothing circuit; a series circuit...
CIRCUITRY AND METHOD FOR ADJUSTING OUTPUT VOLTAGE
The present invention discloses a circuitry for adjusting output voltage, which is set between an input voltage source and an internal device, and the...
VOLTAGE SUPPLY UNIT AND METHOD FOR OPERATING THE SAME
A voltage supply unit includes a regulator unit, a current mirror, and a cascode unit. The regulator unit is configured to receive first and second voltage...
BUCK POWER STAGE WITH MULTIPLE MOSFET TYPES
A buck voltage converter is disclosed. The buck voltage generator includes a controller configured to generate one or more pulse width modulation (PWM)...
FAST TRANSIENT POWER SUPPLY WITH A SEPARATED HIGH FREQUENCY AND LOW
FREQUENCY PATH SIGNALS
A power interface device includes a main switching converter, an auxiliary switching converter, and a feedback sense circuit. The main switching converter is...
CONTROL ARCHITECTURE WITH IMPROVED TRANSIENT RESPONSE
A power supply system includes a power source; a load device configured to receive power from the power source; and a power interface device coupled to the...
A semiconductor device includes a plurality of transistors, each having a gate electrode including extending portions having a length obtained by dividing the...
SEMICONDUCTOR DEVICE AND CONTROL METHOD THEREOF
According to one embodiment, a DC-DC converter 1 includes a power supply unit 12 that includes an inductor L1 and a switching unit and generates an output...
PULSE TRANSLATION MODULATION FOR POWER CONVERTERS
A control method is provided for a power converter comprising a switched power stage configured to generate an output voltage from an input voltage according...
CONTROL MODULE WITH AN ESTIMATOR OF AN INPUT ELECTRIC QUANTITY FOR A
SWITCHING CONVERTER AND METHOD FOR...
Described herein is a module for controlling a switching converter, which includes at least one inductor element and one switch element and generates an output...
FAST RESPONSE CONTROL CIRCUIT AND CONTROL METHOD THEREOF
In one embodiment, a control circuit configured to control a switch mode power supply, can include: (i) a compensation signal generating circuit configured to...
It is presented a DC/DC converter for converting power between a first DC connection comprising a first positive terminal and a first negative terminal, and a...
POWER-SUPPLY CONTROL DEVICE
A power-supply control device that includes a transistor that is interposed between a power source and a load; a control circuit to which a voltage from the...
RESONANCE DETECTION AND FILTERING CIRCUITRY
A circuit and method to filter a signal is provided. The circuit includes a notch filter circuit to receive an input signal and first and second tuning signals...
POWER CONVERTER AND AIR CONDITIONER
Disclosed herein is a technique for substantially preventing, in a power converter including a boost power factor correction section, the power factor...
CONTROL SYSTEM FOR INVERTER
A control system includes an electronic control unit. The electronic control unit is configured to execute three-phase ON control such that two transistors...