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AC motor control apparatus
A control apparatus for an AC motor includes a current sensor and an estimation section. The current sensor detects current flowing through one phase of the...
Generator excitation apparatus and power conversion system
According to one embodiment, there is provided a generator excitation apparatus including a plurality of first power converters and a second power converter....
Motor driving circuit
A motor driving circuit may include a timing detection circuit configured to receive a signal that corresponds to the Hall signal output from the Hall sensor,...
Transition scheme for position sensorless control of AC motor drives
Motor drive control apparatus and methods are presented for sensorless control of a driven motor using open loop current regulated control during low-speed...
Sensorless rotor position determination for a wound field synchronous
A rotor position determination and tracking system for a dynamo electric machine includes a first AC power supply to inject a carrier wave into a main stator of...
Control circuit and electrical device
The control circuit includes: a first power supply, including a high-level output and a low-level output; a first circuit, including two inputs, a driver module...
Ultrasonic transducer assembly installation device and methods
Transducer assemblies and associated methods are provided for facilitating alignment of ultrasonic transducers with respect to pipes onto which the transducers...
Power conversion control device and power conversion device using the same
The present application presents a power conversion control device that does not reduce electric power conversion efficiency. A mode judging section judges...
Control apparatus and control method for voltage conversion apparatus
A control apparatus for a voltage conversion apparatus includes: duty command signal generation means for generating a duty command signal corresponding to a...
PWM output voltage measurement apparatus and method
Output voltage feedback systems and methods are provided for controlling voltage source inverter output voltages using low bandwidth buffer circuitry and low...
Stacked switched capacitor energy buffer circuit architecture
Described herein is a stacked switched capacitor (SSC) energy buffer circuit architecture and related design and control techniques.
Systems and methods for discharging an AC input capacitor with automatic
System and method for discharging a capacitor. An example system includes a signal detector and a discharge control component. The signal detector is configured...
Efficient inductorless AC/DC converter
In at least one embodiment, the invention provides an inductorless AC/DC converter for generating a DC power supply with up to 98% efficiency. That power is...
AC/DC converter circuit
There is disclosed an AC/DC converter circuit. The circuit comprises: an input terminal for receiving an AC supply voltage; a driver circuit adapted to supply a...
An AC to DC converter is provided with: a rectifier circuit that rectifies an AC voltage generated by an AC voltage source; and a plurality of switching units...
Lighting driver having multiple dimming interfaces
Lighting control techniques and corresponding drivers and ballasts are disclosed. In some embodiments, the driver or ballast receives multiple dimming inputs...
High-voltage power converter
The present invention relates to a high-voltage power converter comprising a number of controllable switching valves, each switching valve comprising a...
Power conversion apparatus and power conversion method
A power conversion apparatus includes a plurality of power supply circuits each including a primary side circuit, and a secondary side circuit that is...
There is provided a power supply including a direct current (DC) to DC converter supplying main power to a load, and a sub converter connected to the DC to DC...
Secondary controller for use in synchronous flyback converter
A secondary controller for use in a synchronous flyback converter includes a comparator, a drive circuit, and logic circuitry. The comparator is coupled to...
A power adaptor is provided. The power adaptor includes a voltage converter, a connecting port, a first transformer and a controller. The voltage converter...
Circuits and methods for constant output current in a flyback converter
Flyback converters are disclosed herein. An embodiment of a flyback converter includes a transformer having a primary side and a secondary side. A switch is...
Switching mode power supply with variable switching operation frequency
and the driving method thereof
The present invention relates to a switching mode power supply and a driving method thereof. In the present invention, a supply voltage is generated by using a...
Provided is a DC/DC converter that is capable of performing stable control without being affected by noise from an output voltage and without any malfunction...
Three-channel high-side gate driver having startup circuit and
A driver circuit includes three non-contiguous high-voltage wells formed within a low-voltage monolithic silicon substrate; a high-side driver circuit...
Expanded range DC-DC converter
A DC-DC converter, which provides a converter output voltage using a DC source voltage, is disclosed. The DC-DC converter includes converter control circuitry...
I/O driver transmit swing control
A transmission line interface circuit includes a voltage regulator to control a voltage swing of the transmission line interface circuit for signal...
Systems and methods for DC-to-DC converter control
A regulated, power supply system is described using multiphase DC-DC converters with dynamic fast-turnon, slow-turnoff phase shedding, early phase turn-on, and...
Switch control circuit, coupled inductor boost converter including the
same, and driving method of the coupled...
The present invention related to a switch control circuit, a coupled inductor boost converter including the same, and a driving method thereof. The coupled...
Improving load transient response by adjusting reference current in
isolated power converters
Methods and systems for improving load transient response in power conversion systems are provided herein. The system includes a primary stage and a secondary...
Controlling DC-to-DC converter duty cycle by shifting PWM ramp
A system includes a pulse width modulator and a shift generator. The pulse width modulator receives a saw-tooth signal and generates pulse width modulated...
Power supply device
A connection switch control part that, within a voltage change period where an applied voltage to an inverter can be changed by repeatedly and alternately...
Power conversion device
A power conversion device has a power module that switches the ON/OFF state of a switching element and converts and outputs input power, a metal housing that...
Power converting apparatus with dynamic driving adjustment
A power converting apparatus with dynamical driving adjustment includes a rectifying unit, a power factor correction unit, a power conversion unit and a...
Inverting apparatus and photovoltaic power system using the same
An inverting apparatus and a photovoltaic power system using the same are provided. The inverting apparatus includes an inverting circuit, a control circuit,...
Basic function unit of voltage-source converter based on full-controlled
The present invention relates to a basic function unit of voltage source converter, which is characterized in that the basic function unit includes a switching...
Energy conversion apparatus with tuned circuit
Apparatus for an electromagnetic engine producing both mechanical and electrical power. The apparatus includes a signal generator, such as a device that plays a...
A haptic actuator (20(X)) provides compact mounting for a haptically-actuated assembly by mounting at least a portion of the haptically-actuated assembly to...
Permanent magnet electric motor
According to one embodiment, a rotor is configured by a rotor core and magnetic poles. Two or more types of permanent magnets are used such that each product of...
Method for manufacturing laminated iron core
A method for manufacturing a laminated iron core is provided. A laminated iron core body including a permanent magnet inserted into a magnet-insert hole is...
Carbon brush with disconnection apparatus
A carbon brush with a disconnection apparatus in a cavity in a brush body includes a disconnection body and a prestressed compression-spring body. The...
One-piece voltage regulator/brush-holder assembly for a rotary electrical
machine and rotary electrical machine...
An electrical machine such as an alternator or starter-alternator for a motor vehicle which is fitted with the one-piece voltage-regulator/brush-holder assembly...
Assemblies and methods for cooling electric machines
Cooling assemblies, such as those configured to cool electric machines (e.g., electric motors and generators) and components of electric machines (e.g., rotors...
Integrated flywheels, systems and methods for electric generation and
braking of a general purpose engine
Systems, devices, and methods for using an engine flywheel can provide both electric power output and braking of powered equipment. In particular, an engine...
Method for providing servo motor rear bearing support, space for internal
electronic packaging and IP sealing...
An electric motor assembly that eliminates external component-to-component assembly seams between coupled packaging hardware that would inhibit the creation and...
Stator for rotating electric machine
A stator includes an annular stator core and a three-phase stator coil. The stator coil is comprised of a plurality of star-connected phase windings. The stator...
An apparatus, such as an electrical machine, is provided. The apparatus can include a rotor defining a rotor bore and a conduit disposed in and extending...
Rotating electrical machine
A rotating electrical machine comprising an armature; a yoke; and a plurality of magnets arrayed in a ring shape along an inner peripheral face of the yoke. The...
Electrical machine having partially parallel slots and teeth
A tubular body for an electrical machine is provided. The tubular body comprises a curved surface area, a first tooth and a second tooth. The tubular body is...
Stator of motor and motor
Provided is a stator of a motor which is capable of reducing a loss generated in a motor and thereby attaining a high-efficient motor, and a motor including the...