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AC motor with stator winding tap and methods for starting an AC motor with
a variable speed drive
Methods for starting an AC motor with a variable speed drive and switching the motor to a higher voltage power source are described. Provided are AC motors with...
Integrated circuit apparatus, ultrasound measuring apparatus, ultrasound
probe and ultrasound diagnosis apparatus
An integrated circuit apparatus includes transmitting circuits TX1 to TX64, which output transmission signals with regard to channels CH1 to CH64 of an...
Piezoelectric element, oscillatory wave motor, and optical apparatus
A piezoelectric element that can decrease the output voltage for detection relative to the input voltage for driving without requiring a step-down circuit...
Method for operating a drive control device, facility with means for
executing the method and drive control...
A drive controller and a method for operating a drive controller having a converter with a DC link circuit, includes measuring during operation phase currents...
Power converter, power generation system, control apparatus, and power
A power converter according to embodiments includes a boost circuit, a single-phase inverter, a current controller, and a power conversion controller. The...
Communication within a power inverter using transformer voltage frequency
Communicating by a power inverter is provided. Processes can include outputting a first voltage at a frequency as determined by primary side control, applying...
Power converter system, damping system, and method of operating a power
A power converter system includes a converter configured to be coupled to a power generation unit for receiving current from the power generation unit. A bus is...
Power conversion device
A single phase three-level power converter can include a first half bridge and a second half bridge. A half bridge operation is implemented in either the first...
Power supply apparatus including power conversion circuit controlled by
PWM control circuit
A power conversion circuit connected to a three phase alternating current line is controlled in a PWM system. To control an arm corresponding to each phase,...
Rectifier circuit with a voltage sensor
A rectifier circuit with a semiconductor element is disclosed. The semiconductor element includes at least one field effect transistor with a control electrode,...
MOSFET bridge circuit
In a general aspect, a bridge circuit can include a first bridge including a first plurality of MOSFETs and including a first input terminal and a second input...
Efficient LLC resonant converter having variable frequency control and
fixed frequency phase-shift PWM
An output voltage of an LLC resonant converter circuit is received. The received output voltage is analyzed to determine whether the received output voltage is...
Method for controlling synchronous rectifier of power converter and
control circuit using the same
The invention discloses a method for controlling a synchronous rectifier of a power converter and a control circuit using the same. The method includes the...
LLC bidirectional resonant converter and methods of controlling
A LLC bidirectional resonant converter comprising: a resonant tank, a first switching circuit connected to the resonant tank via first power conduits, a second...
Power conversion system
The present disclosure relates to a power conversion system comprising a transformer comprising first, second, and third inductive coupling elements, a first...
Forward boost power converters with tapped transformers and related
In a switching mode power converter coupled between first and second terminal pairs, a first circuit path includes a first inductance and a first switch. A...
Bi-modal voltage converter
A bi-modal voltage converter and associated method for reducing stress on secondary rectifiers and decreasing switching losses. An embodiment of the voltage...
Power supply system, image forming apparatus having the power supply
system, and control method of the power...
A power supply system includes: a switching power supply for converting an AC voltage from an AC power supply into a DC voltage; a latching relay provided on an...
DC to DC converter assembly
A DC to DC converter assembly, for connecting first and second high voltage DC power transmission networks, comprising first and second modular multilevel...
Asymmetric power flow controller for a power converter and method of
operating the same
A controller for a power converter formed with a plurality of converter stages, and method of operating the same. In one embodiment, the controller includes a...
Switching power supply circuit
A switching power supply circuit includes: a voltage generation circuit that generates an output voltage by smoothing, with a capacitor, a voltage produced in...
Dual mode power supply controller with charge balance multipliers and
charge balance multiplier circuits
A circuit for generating an output current includes a control signal generating circuit that is configured to generate a control signal. The control signal is a...
Voltage regulator with adaptive control
Generally, this disclosure describes an apparatus, systems and methods for adaptively controlling a voltage regulator. The apparatus may include a differencing...
Charge pump circuit suitable for low voltage operation
A charge pump device with NMOS transistor circuit is provided for low voltage operation. The charge pump stage, comprising four NMOS transistors and three...
Charge pump circuit, integrated circuit, electronic device and method
A charge pump circuit for generating a negative voltage has a switched capacitor voltage inverter circuit arranged to receive at least one clock signal and...
Bridgeless power factor improvement converter
A bridgeless power factor improvement converter is configured with input terminals to which an AC voltage is input, output terminals from which a DC voltage is...
Start-up circuit and method for AC-DC converters
For starting-up a power converter, an AC rectified voltage is generated upon power-up of the power converter. A depletion mode transistor generates a first...
Drive unit for switching element
An inverter for driving a motor generator has series connection units, each of which has two switching elements, connected in series, in high and low voltage...
Load driving device and electronic device using same
A load driving device according to the present invention has: an internal circuit (DRV) that operates in response to the supply of a power supply voltage (HV or...
Apparatus for compensating for ripple and offset of inverter and method
An apparatus and method for compensating for a ripple and offset of an inverter and an apparatus and method for compensating for a ripple and offset of an...
Power factor corrector correcting a power factor of an alternating current
A power factor corrector correcting the power factor of an alternating current (AC) voltage is disclosed. A power factor correcting unit corrects the power...
Power converter with negative current capability and low quiescent current
DC-DC current mode switching power converters that have negative current capability are presented. The power converters comprise: an output node, a pass device...
Motion-damping systems between base structure and an attached component
and methods including the same
Motion-damping systems and methods that include motion-damping systems are disclosed herein. The motion-damping systems include a flexible body that is...
Provided is a stepping motor which includes a bracket, a stator and a rotor disposed at the bracket, a lead screw of which both ends are fixed to the bracket,...
The present invention provides such a vibration generator which can obtain desired power-generation efficiency even if the vibration frequency is low. A...
Easy-to-start motor including a metallic induction member wrapped with a
plastic member and a base thereof
An easy-to-start motor includes a base, a stator and a rotor. The base has a plastic member and a metallic induction member wrapped with the plastic member. The...
HF generator with improved solid-state switch connections
An HF generator has first and second solid-state switches. Each of the solid-state switches has first and second output connectors and is designed to switch a...
Energy harvesting devices
An energy harvesting device includes at least one first magnet configured to rotate along a first circular path in a first plane. The energy harvesting device...
Electric motor/generator with integrated differential
An electrical machine comprising: at least one stator, at least one module, the at least one module comprising at least one electromagnetic coil and at least...
Manufacturing apparatus for a stator core
The manufacturing apparatus for a stator core has a servo pressing device, a mold, a punch assembly, a first cylinder, a second cylinder and a third cylinder....
A motor includes a stator around which an armature coil is wound, a bus bar unit including a coil-connection bus bar electrically connected to the armature coil...
Embedded encoder for an outrunner brushless motor
An example embedded encoder for an outrunner brushless motor is provided. An example motor includes a motor shaft, a stationary stator, a rotor coupled to the...
An electric machine, such as a generator, providing for the generation of electricity and includes a rotor generating a magnetic field and a stator having...
A motor actuator of the present invention includes: a motor including an outer shell portion internally provided with a rotor that rotates as a unit with a...
Dynamic system for generating electricity
A dynamic system for generating electricity from a changing magnetic field includes solenoids routed on a single iron core, switches, and diodes. A first...
Electric motor with ball bearing assembly for rotary shaft
An electric motor includes a rotor having a rotary shaft, a pair of ball bearings for supporting the rotary shaft, and two brackets having bearing housings for...
Downhole elongated electrical motor
The present invention relates to a downhole electrical motor elongated in a longitudinal direction, comprising a housing, a stator comprised inside the housing,...
A magnetic wedge comprises a first element of magnetic material extending longitudinally along a first direction and second element of non-magnetic material...
Stator of rotary electric machine
A stator of a rotary electric machine includes a stator core that includes a plurality of slots; and a plurality of conductor segment coils that each have a...
Hollow-cylindrical coreless winding
Exemplary embodiments relate to a hollow-cylindrical coreless winding for an electric motor. The winding includes a plurality of single coils which are...