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Converter for an electric motor
A converter for an electric motor includes a semiconductor element connected at at least one contacting for converting a voltage, a voltage measuring device for...
Rotary electric machine control system and rotary electric machine control
A rotary electric machine control system includes a rotary electric machine (second motor generator), a number-of-revolutions sensor that measures the number of...
Driving apparatus for analyzing apparatus
Disclosed is an analyzing apparatus including a first drive part (71) for rotating a turntable (101) on which an analyzing device is set, a second drive part...
Motor control device
Provided is a motor control device that includes an inverter circuit that includes a plurality of P-side switching elements and a plurality of N-side switching...
Membrane-based nano-electromechanical systems device and methods to make
and use same
Nano-electromechanical systems (NEMS) devices that utilize thin electrically conductive membranes, which can be, for example, graphene membranes. The...
MEMS electrical contact systems and methods
A microelectromechanical systems (MEMS) device may be provided with one or more sintered electrical contacts. The MEMS device may be a MEMS actuator or a MEMS...
Control method and system for correcting the voltages to be applied to an
A control method to be implemented in a power converter, the power converter including an inverter module controlled by a control rule that makes it possible to...
Power conversion device
There is provided a device including: an inverter 5 including switching elements 51-52 for outputting a U-phase voltage and switching elements 53-54 for...
Short circuit detection in a capacitor of a DC-bridge and DC-bridge
A bridge circuit and a short-circuit protection method thereof. The bridge circuit includes an input power unit, a converter unit, a first capacitor, a second...
Power conversion apparatus and power conversion method
A controller of a power conversion apparatus according to an embodiment causes a chopper and an inverter to generate an alternating-current (AC) voltage...
Modular embedded multi-level converter with midpoint balancing
A modular embedded multi-level converter (MEMC) includes a first phase portion and a second phase portion. The first phase portion includes a first switch stack...
Converting apparatus and control method thereof
An inverting apparatus and a control method thereof are provided. The inverting apparatus includes an inverting circuit, a capacitor, and a control circuit. The...
Method and device for controlling an inverter
The invention relates to a method for controlling an inverter (10) using space-vector pulse width modulation, in particular to control an electric machine (14),...
Current-rectifying device, gate-boosting rectifier and method of
permitting current to flow in one direction...
A current-rectifying device includes a switching component and an impedance transformer. A conductance between first and second nodes of the switching component...
Voltage detection circuit and a method of detecting voltage changes
A power conversion system and a method for voltage change detection, specifically, relates to a detection circuit implemented in the AC-DC power converter,...
AC/DC electrical conversion device permitting energy recovery and
management of DC-side short-circuits
An AC/DC electrical converter device having a source mode and a recovery mode, and for connection, on the AC side, to an AC voltage source and, on the DC side,...
Power converter with a first string having diodes and a second string
having switching units
A power converter is presented. The power converter includes at least one leg, the at least one leg includes a first string, where the first string includes a...
Radio frequency power source having precise power detector
A radio frequency (RF) power source having a precise power detector includes a RF signal generator, a RF power amplifying circuit, a power supply circuit, and a...
Hybrid high voltage direct current converter systems
A hybrid HVDC converter system includes at least one alternating current (AC) conduit, at least one transformer coupled to said at least one AC conduit, and at...
Power conversion apparatus and power conversion method based on a control
constant and a feedback value based...
A power conversion apparatus includes a primary side circuit having a primary side port; a secondary side circuit having a secondary side port; and a control...
Power module and distributed power supply apparatus having the same
There are a power module and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage switching input...
LLC resonant converters
A resonant tank comprises a resonant inductor coupled to a switching network and a transformer, a resonant capacitor coupled to the switching network and the...
Switching power supply device
An output voltage detection portion detects the change of a DC output voltage on a primary side of a transformer. A control circuit outputs a gate signal of a...
Current controlled resonant tank circuit
A cascade power system includes a non-isolated buck converter in cascade with an isolated Class-E resonant circuit, where the Class-E resonant circuit operates...
Charge pump circuit having two fly capacitor modules
There is described a charge pump circuit (1) circuit comprising an input terminal, an output terminal (5) connected to an intermediate node (Ni), a ground...
Switch-mode power supply with temperature and current sharing
A switched-mode power supply in a set of parallel-connected switched-mode power supplies is operated to (1) monitor both output current and operating...
Step-up step-down converter device
In a step-up step-down converter device, a diode is connected in parallel to a switch connecting a positive pole side and a negative pole side for stepping up...
Current pulse count control in a voltage regulator
A method of regulating voltage with a switching regulator is disclosed. The method includes sensing an output voltage provided by the regulator. If the output...
Floating power converter having multiple voltage inputs
A floating power converter includes direct current to direct current (DC-DC) converter circuitry having at least one converter control terminal for receiving at...
Power supply that charges an electric storage by regenerative power
generated by a generator and supplies power...
A power supply includes: a first connection terminal connectable with a DC power supply to which a first load and a generator are connected in parallel; a...
Transient power control
Automatic transient control circuitry may be used to alleviate issues relating to large changes in power demands by a load in an integrated circuit. The...
Voltage regulator and voltage regulating method and chip using the same
A voltage regulator with an on/off control on the control terminal of the power transistor of the voltage regulator. The power transistor of the voltage...
Switch relay device
The present invention relates to a switch relay device, and more particularly, to a switch relay device which is used as an electronic relay that drives...
Inductor current zero-crossing detection method and circuit and switching
power supply thereof
In one embodiment, a method of detecting an inductor current zero-crossing in a switching power supply, can include: (i) determining a present output voltage of...
Capless voltage regulator using clock-frequency feed forward control
A voltage regulator for controlling an output device in accordance with embodiments includes an error amplifier; a controlled conductance output device; and a...
Charge pump systems and methods
Charge pump systems and methods for the operation thereof can be configured for delivering charge to a primary circuit node. A sequential charging pattern of at...
DC power supply circuit
In a DC power supply circuit (1), when an instantaneous value (Vin) of a voltage from a rectifier circuit (2) is higher than or equal to a voltage (VC2) across...
Power conversion device having initial charging circuit
A power conversion device 300 includes: an AC/DC converter section 10 which has an initial charging circuit 36 that initially charges a smoothing capacitor 22...
Power conversion with external parameter detection
In accordance with an embodiment, a method includes driving an electronic switch in a switched-mode power converter in successive drive cycles, wherein driving...
Voltage compensation circuit and control method thereof
A voltage compensation circuit and a control method thereof dynamically compensate a voltage drop caused by supplying power from a first power line to a...
Method for operating a power converter module and a device therefor
The present disclosure relates to methods, a system and a module for operating a power converter module. The power converter module comprises a voltage...
Voice coil motor
Disclosed is a voice coil motor, the motor including a rotor having a cylindrical bobbin that has a support block protruding from an upper end of an outer...
Audio resonance vibrator
An audio resonance vibrator includes a bracket, an elastic frame cooperatively with the bracket forming a housing having a receiving space, a magnetic circuit...
A linear vibrator includes a housing providing an internal space; a fixed part including a coil fixed to the housing to be disposed in the internal space; a...
Three-phase electric motor with a low detent torque
The disclosure relates to a three-phase electric motor that uses high magnetic energy permanent magnets and that has a low detent torque. The motor consists of...
Dynamoelectric machine assemblies having memory for use by external
A method is provided for storing data from an external device in a dynamoelectric machine assembly (i.e., an electric motor or generator). The dynamoelectric...
Motor having a sensor magnet and a structure to mount the same
A motor includes a rotation shaft having a first recessed portion. The first recess portion includes a bottom surface and a wall surface and a second recessed...
Cooling system for an asynchronous rotor
A cage rotor for an synchronous machine includes a laminated rotor core, shorting bars arranged inside the laminated rotor core, shorting rings which are cast...
Transformer including a contactless signal connection
An improved transformer (130) for use in a power tool (100) is disclosed, where the power tool (100) comprises a stationary body (110) and a shaft (120) being...
Electromagnetic coupling device having electromagnetic coil with ends
formed by terminal lines of different...
The present invention relates to an electromagnetic coupling device. In the electromagnetic coupling device according to the present invention, ends (5a and 5b)...