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Method and electronic circuit for motor stall detection
A method of detecting stall of a multi-phase motor operated in a micro-stepped mode, the method comprising: a) applying at least two phase-shifted micro-stepped...
Variable torque control of a stepper motor
A stepper motor may be controlled by a controller to provide extended revolution of a motor shaft while operating in a first mode and to allow a user to...
Motor control device, robot hand, robot, and motor control method
A motor control device controls a motor using an angle data signal and a rotational speed signal output from a rotation detector detecting a rotation state of a...
Motor control device and steering device for vehicle
In a state in which the energization in the first direction is possible between the motor and the drive circuit and the motor is not rotating at high speed,...
Drive control device for drive system including vertical carrier machine
The drive control device for a drive system including a vertical carrier machine includes: a drive control device (A) for an electric motor (M1) mainly for...
Drive arrangement for the motorized adjustment of an adjustment element of
a motor vehicle
The invention relates to a drive arrangement for the motorized adjustment of an adjustment element of a vehicle, wherein at least one drive comprising an...
Systems, apparatus, and methods for soft starting large AC motors with a
variable frequency drive
A system for soft starting a large AC motor may include a variable frequency drive (VFD) having a much lower voltage rating than the rated voltage of the AC...
A thermo-mechano-electric converter including a plurality of shape memory bistable elements embedded in a resilient material intimately associated with a...
An ultrasonic motor having an ultrasound actuator in the form of a piezoelectric hollow cylinder with friction elements on at least one of its end surfaces, and...
Low voltage detector
An apparatus includes a voltage monitoring device to generate a brownout indication signal in response to a change in a power supply voltage. The apparatus also...
Method and apparatus for improved burst mode during power conversion
A method and apparatus for power conversion. In one embodiment, the method comprises operating an inverter in bursts by (i) enabling power production by the...
Power conversion device with a plurality of series circuits
A power conversion device is provided which includes a plurality of series circuits each formed of a voltage source and a controlled current source. At least...
Active front end power converter with boost mode derating to protect
Methods and apparatus are presented for controlling a power converter to protect input filter inductors from overheating, in which an active front end (AFE)...
Control device of a switching power supply
A control device of a switching converter controls the closing and opening of a switch of the converter that regulates the operation of an inductor. The control...
Bipolar double voltage cell and multilevel converter with such a cell
A multilevel converter cell includes a first section with a first group of series connected switching units in parallel with a first energy storage element,...
Stable regenerative bi-directional cell for bridge power inverters
A high efficiency, multi-mode, regenerative AC-DC-AC inverter power system contains an inverter bridge, a bi-phase matrix (BP-Mtx) containing reverse current...
HVDC series current source converter
A multilevel current source converter (CSC) for controlling electrical power transmission in a high voltage direct current (HVDC) transmission system includes...
Hybrid converter using a resonant stage and a non-isolated stage
A converter comprises a non-isolated stage coupled to an input dc power source, wherein the non-isolated stage is configured to operate at a buck converter mode...
High efficiency DC/DC converter and controller
Systems, methods, and devices for use in a DC/DC converter. A circuit uses a full-bridge power semiconductor subcircuit along with a high power transformer...
Method and apparatus for power conversion
A method and apparatus for converting a first power to a second power. In one embodiment, the apparatus comprises a power conversion circuit for receiving the...
Current sensorless MPPT for PV micro-inverters
Systems, methods, and devices for use with photovoltaic micro-inverters. A control system for controlling power switches in a full bridge inverter in a DC/DC...
Method and apparatus for extending zero-voltage switching range in a DC to
Method and apparatus for extending a zero voltage switching (ZVS) range during power conversion. In one embodiment, the apparatus comprises a DC/DC converter,...
Electric power source device
An electric power source device has a transformer, a primary-side semiconductor module, a secondary-side semiconductor module, a secondary-side electrical...
Switch control circuit, switch control method and power supply device
using the same
Embodiment relates to a switch control circuit, a switch control method, and a power supply using the switch control circuit. The power supply supplies power to...
Disclosed is a DC-DC converter with a converter bridge, tank circuitry, and rectifier circuitry. In one embodiment, the converter bridge includes multiple...
Power device and method for delivering power to electronic devices
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is...
Boost converter with circuit for body switching of the rectification
A first softstart signal indicates operation in a load phase for a boost rectifier and a second softstart signal indicates operation in a pulse drive phase...
Enhanced phase control circuit and method for a multiphase power converter
A multiphase power converter has a plurality of phase circuits, each of which provides a phase current when being active. During single-phase operation of the...
DC-DC converter with digital current sensing
A regulated DC-DC switching converter includes a bypass mode in which ends of an output inductor are coupled together. Circuitry determines output capacitor...
Power supply apparatus
A power supply apparatus includes a power supply section and a control section. The power supply section includes a first switch which performs switching of...
Control method for a power supply system
A control method for a power supply system having at least two power parts with power outputs connected in parallel, wherein each power part is actuated via a...
Asynchronous switch mode power supply
There is disclosed an asynchronous switch mode power supply comprising: a subtractor for subtracting an output of the switch mode power supply from a reference...
Self-calibrated voltage regulator
A voltage regulator includes a driving circuit, a feedback circuit, first and second control circuits and a resistor. The driving circuit is coupled to an input...
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...
Systems and methods for measuring inductor current in a switching DC-to-DC
A switch control circuit may be utilized for a sequence of switching events: a first event to activate a first switch and deactivate a second switch, wherein a...
Digital controller with nested loops for switched mode power converter
In one example, a method includes receiving a voltage value and comparing the voltage value to a reference voltage value to determine a delta voltage value. The...
Photovoltaic systems with maximum power point tracking controller
A system and a method provide a photovoltaic system which regenerates the output characteristics of the photovoltaic at different ambient condition with high...
Wirelessly activated power supply for an electronic device
A power supply includes a power supply circuit and a power-on circuit controlling transitioning of the power supply circuit to a turned-on state. The power-on...
When an overcurrent is detected by an overcurrent detecting circuit (36), a first switch circuit (32) selects a second input terminal (b) and connects an output...
Resistance generating device for drive unit
A resistance generating device for a drive unit of an opening and closing member of a vehicle includes a transmission member transmitting a rotary motion to a...
A braking device includes a flywheel rotatably mounted on a brace, a circular rotor deposited on the flywheel, and a stator fixed to the brace for combining...
Electromechanical generator for converting mechanical vibrational energy
into electrical energy
An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a housing, an...
Tactile low frequency transducer
A transducer comprising: a flat strip of metal formed into a closed metal loop with two substantially parallel sides and rounded corners, a solenoid fixed to a...
Deformation control device for a resonant spring in a linear driving unit
The present device is applied to a linear driving unit which comprises: a linear electric motor (M) formed by a motor housing (C) which is electrically excited...
Multiple conductor winding in stator
An electric machine includes a stator disposed about an axis in register with the rotor. The stator has a plurality of slots parallel to the axis. A plurality...
Grounded radial diode pack
The present disclosure relates to generators and their components. Specifically, a grounded radial diode pack is disclosed herein. A design to accommodate safe...
Electrical machine for use in the automotive sector
An electrical machine for an automotive vehicle has a housing (4). A stator arrangement (8) and a rotor arrangement (6) are disposed in the housing (4). At...
The invention relates to an electric machine supplied with air for cooling purposes. The air is heated during operation of the electric machine and is removed...
Two phase gap cooling of an electrical machine
An electro-dynamic machine has a rotor and stator with a gap therebetween. The machine has a frame defining a hollow interior with end cavities on axially...
Drive unit and electric power steering device including the drive unit
A drive unit that includes a rotating electric machine having a stator with winding wound on the stator and with a shaft rotating within the stator, and a rotor...