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Patent # Description
US-9,479,089 Piezoelectric energy harvester device with a stopper structure, system, and methods of use and making
The present invention relates to an energy harvester device comprising an elongate resonator beam comprising a piezoelectric material, the resonator beam...
US-9,479,088 Method and device for electrically exciting an actuator for an ultrasonic motor
A method for electrically exciting a piezoelectric actuator of an ultrasonic motor is described. The ultrasonic motor has at least one acoustic standing wave...
US-9,479,087 Control apparatus of vibration-type actuator and control method of vibration-type actuator
Provided is a control apparatus of a vibration-type actuator for generating an elliptical motion of contact portions by a common alternating current including a...
US-9,479,086 Energy collection
An energy collection system may collect and use the energy generated by an electric field. Collection fibers are suspended from a support wire system supported...
US-9,479,085 Self-conforming plates for capacitive machines such as electrostatic motors and generators
Capacitive machines generate torque, generate electric power, and/or transmit electrical signals using closely spaced parallel plates wherein one plate is in...
US-9,479,084 Pseudo zero vectors for space vector modulation and enhanced space vector modulation
A method of performing space vector modulation for PWM control for creating AC waveforms includes generating and sampling a reference signal to generate...
US-9,479,083 Power converter in which switching elements are driven in parallel
A power converter for converting DC power to AC power by switching operation of a switching element includes: a bridge circuit configured by at least two series...
US-9,479,082 Method and apparatus for resonant power conversion
A method and apparatus for providing multi-phase power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a charge ratio...
US-9,479,081 System for supplying a load with a parallel resonance
A supply system for a load with a parallel resonance and comprising a transformer having a first and a second primary winding and a secondary winding, the...
US-9,479,080 Multilevel converter circuit for generating a plurality of voltage levels
In some aspects, a direct current power source, formed of a series connection circuit of single power sources, which has three mutually different voltage levels...
US-9,479,079 Control method for inverter device, and inverter device
An inverter device (1), including a first inverter (10), and a second inverter (20) connected in parallel to the first inverter. Both the first and second...
US-9,479,078 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, the...
US-9,479,077 Three-phase power supply system
An electric three-phase power supply system includes a primary stage arranged to receive an input of three-phase alternating current power; a transformer stage...
US-9,479,076 Converter cell with reduced power losses, high voltage multilevel converter and associated method
It is presented a converter cell (10a; 10b) arranged to be used in a high voltage multilevel converter. The converter cell comprises: an energy storage element...
US-9,479,075 Multilevel converter system
A power converter is provided. The power converter includes at least one leg. The at least one leg of the power converter includes a plurality of switching...
US-9,479,074 Resonance coupler, transmission apparatus, switching system, and directional coupler
A resonance coupler disclosed includes a first resonator to which a transmission signal is input, a second resonator to which the transmission signal is...
US-9,479,073 Gate drive apparatus for resonant converters
An apparatus comprises a bridge coupled between a bias voltage and ground, wherein the bridge comprises a first switch and a second switch connected in series...
US-9,479,072 Flyback converter
The invention relates to a flyback converter circuit comprising a transformer, a charging capacitor, a diode, a semiconductor switch and a controller, which...
US-9,479,071 Multilevel converter and power supply system
A multilevel converter includes at least one converting unit, where the converting unit includes N interleaved parallel bridge arms which enable the converting...
US-9,479,070 Power conversion system
This disclosure relates to a power conversion system to power a variable impedance load with a variable power source, the power conversion system comprising a...
US-9,479,069 Flyback-based power conversion apparatus with high conversion efficiency and low cost mechanism
A power conversion apparatus including a flyback power conversion circuit, a control chip and a detection auxiliary circuit is provided. The flyback power...
US-9,479,068 Power supply device
There is provided a power supply device having a primary side on which a primary winding of a transformer is located and a secondary side on which a secondary...
US-9,479,067 System and method for a switched-mode power supply
In accordance with an embodiment, a method of operating a switched-mode power supply includes detecting a voltage decrease in a secondary winding of a...
US-9,479,066 Converter one pin sensing
Power converters, such as switched-mode power converters comprise a reduced number of sensing pins. A power converter is configured to convert electrical energy...
US-9,479,065 Controller supply terminal boosting
A power conversion device includes a power switch a first main terminal coupled to a higher potential portion, a second main terminal coupled to a lower...
US-9,479,064 Switching control circuit and switching power supply device
A voltage detecting circuit of the present invention is formed of a differential amplifier and an H-detection filter circuit, and the differential amplifier...
US-9,479,063 Frequency jittering control circuit and method for a PFM power supply
A frequency jittering control circuit for a PFM power supply includes a pulse frequency modulator to generate a frequency jittering control signal to switch a...
US-9,479,062 Galvanically isolated DC/DC converter and method of controlling a galvanically isolated DC/DC converter
A galvanically isolated DC/DC converter includes at least one first side converter circuit coupled between a pair of first side DC terminals, and at least one...
US-9,479,061 DC to DC converter assembly
A DC-to-DC converter assembly includes an inverter having first and second terminals connectable to a power transmission network. The inverter has a modular...
US-9,479,060 Control circuit, battery power supply device and control method
A control circuit can include: (i) a boost mode controller configured to control a switch type converter to operate in a boost mode such that an input current...
US-9,479,059 Voltage converter for first and second modes of operation
Methods and devices are provided wherein a change of a mode of operation is performed based on a time where both switches of a first and a second switch are open.
US-9,479,058 Power supply regulator
A power supply that includes positive and negative floating power supply rails. Laterally diffused metal oxide semiconductors (LDMOS) regulate the output...
US-9,479,057 Circuit arrangement for supplying an output current to a load
A circuit arrangement for supplying an output current to a load which is useable in power supplies and is connectable in parallel to other circuit arrangements,...
US-9,479,056 Buck-boost circuit with protection feature
In accordance with some embodiments, a buck-boost circuit is contemplated which is bi-directional. That is, the buck-boost circuit be configured to produce a...
US-9,479,055 DC-DC converter
A DC-DC converter includes a switching device, a drive circuit for turning on and off the switching device, a bootstrap capacitor electrically connected to the...
US-9,479,054 Buck converter with reverse current detection and pseudo ripple generation
Provided is a DC/DC converter capable of immediately resuming to a normal operation from a state in which an output transistor is continued to be turned off...
US-9,479,053 Fast load transient response system for voltage regulators
A circuit and a method for improving the performance of voltage regulators subject to load transients is presented. An auxiliary circuit generates an auxiliary...
US-9,479,052 Independent output control for single-inductor, bipolar outputs, buck-boost converters
Methods and apparatuses drive a Single Inductor Bipolar Output Buck-Boost configured to provide both positive output voltage and a negative output voltage. The...
US-9,479,051 Single-inductor multiple-output DC to DC converter
A DC to DC converter includes a switching circuit and a controller. The switching circuit includes an inductor coupled to first and second voltage supply nodes...
US-9,479,050 High-efficiency fractional pump
Methods and systems for generating voltages greater than a supply voltage are described. In some embodiments, a charge pump system may generate a boosted output...
US-9,479,049 Semiconductor module and boost rectifier circuit
A semiconductor module includes a voltage generator, and a heat dissipating mechanism composed of, for example, an insulating heat dissipating sheet and a heat...
US-9,479,048 Resonant isolated active power factor correction (PFC) rectifier
A method of driving an isolated converter includes opening a first bi-directional switch on an input side of a transformer, accepting current into a resonant...
US-9,479,047 System and method for controlling a power supply with a feed forward controller
In accordance with an embodiment, a power supply controller includes a current controller configured to control an input current of a power supply. The current...
US-9,479,046 Multi-mode PFC control and control method thereof
A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off...
US-9,479,045 Power supply avoiding auxiliary boost circuit over voltage
A power supply avoiding an auxiliary boost circuit over voltage includes a direct current to direct current converting circuit, the auxiliary boost circuit and...
US-9,479,044 Intermittent power line communication for inverters
Methods, systems, and apparatus, including computer program products for structured content ranking. In an aspect, a method includes, receiving, at a...
US-9,479,043 Control circuit with synchronization unit for switching converter and associated control method
A control circuit for a switching converter having a comparison circuit, a synchronization unit, an ON-time control circuit and a logic unit, the comparison...
US-9,479,042 Shut-off circuitry having temperature stable threshold current sensing
A circuit is described that provides low power and temperature stability in a compact design. In one or more implementations of the present disclosure, the...
US-9,479,041 Bootstrap driving circuit without extra power supply
The present invention provides a bootstrap driving circuit without extra power supply, which circuit includes a power unit, a switching unit, a bootstrap unit,...
US-9,479,040 High-resolution positioning device
A high-resolution positioning device has a stator and a rotor, a coil array, arranged on the stator, and having at least three groups of flat coils, wherein...
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