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Patent # Description
US-9,748,887 Permanent magnet synchronous motor and winding-switching motor driving device, and refrigeration air...
A permanent magnet synchronous motor includes at least two series-connected windings for each phase, and is configured to be driven by selecting the windings...
US-9,748,885 Regenerative energy system for ground transportation vehicles
Present example embodiments relate generally to a ground transportation system for interacting with one or more vehicles, the vehicle comprising at least one...
US-9,748,884 Multi-motor frequency control system and control method thereof
The invention provides a multi-motor frequency control system and a control method thereof. The system includes an event generation module, a control module, a...
US-9,748,883 Control device for rotating electrical machine
A rotating electrical machine has a rotor having a field winding and a stator having an armature winding. A control device adjusts a field current flowing in...
US-9,748,882 Integrated motor driver/controller with sensorless or sensored commutation
A motor controller configured to control different types of electronically commutated motors (ECMs) includes a range of different rotor orientation signal...
US-9,748,881 Voltage regulator, operation method thereof, voltage regulating system, and mobile vehicle
A voltage regulator, an operation method thereof, and a voltage regulating system, and a mobile vehicle are provided. The voltage regulator coupled to an...
US-9,748,880 Motor control device and motor control method
A motor control unit having a motor structure that rotates a rotor by voltage excitation includes a photo interrupter, a slit rotation plate, a comparator, and...
US-9,748,879 Motor drive controller and control method of motor drive controller
A motor drive controller is provided with: a motor drive circuit that drives a motor and having a position detector that detects a position of a rotor of the...
US-9,748,878 Adaptive brake timing for a brushless motor
A method is performed by a drive circuit that controls a brushless motor. The brushless motor includes a rotor and a coil structure. The coil structure includes...
US-9,748,877 Motor drive circuit and method
In accordance with an embodiment, a method for driving a motor includes determining a position of a first pole of a rotor of the motor relative to a position of...
US-9,748,876 Control device for an electric machine, method for controlling said electric machine, and motor controller
The present invention discloses a control device for an electric machine comprising a sensor interface designed to receive a sensor signal from a position...
US-9,748,875 Method and device for operating a brushless DC motor
A method for operating a three-phase brushless DC motor with a pulse-width modulation controlled electronic commutation in the event of a malfunction. A maximum...
US-9,748,874 Motor control device, motor control system, and control method for motor control device
A motor control device includes DC voltage circuitry which obtains a DC voltage, an inverter which converts the DC voltage obtained by the DC voltage circuitry...
US-9,748,873 5-pole based wye-delta motor starting system and method
One embodiment describes a motor starter, which includes a first single pole switching device that opens to disconnect power from a first winding of a motor; a...
US-9,748,872 Vibrational energy harvesting system
A vibrational energy harvesting system is disclosed. Included is a first energy harvesting unit and a second energy harvesting unit that convert mechanical...
US-9,748,871 System for harvesting energy from door or door hardware movement
An electrical generation system for a door positioned in a doorway includes a hinge arranged to support the door for rotational movement with respect to the...
US-9,748,870 Acoustic mechanical feed-throughs for producing work across a structure
An apparatus that passes vibrational energy across a mechanical structure lacking a perforation. The disclosed apparatus and method provide the ability to...
US-9,748,869 Vibration power generator
A vibration power generator in which an electret group including a plurality of electrets and an electrode group including a plurality of electrodes are...
US-9,748,868 Triboelectric composite for mechanical energy harvesting and sensing
Composite material comprising a matrix of elastic and electrically insulating material, and a filler of electrically conducting material embedded within the...
US-9,748,867 Control system for linear switched capacitive devices
A switched capacitive device includes a stationary portion including first circuit boards. The device also includes a translatable portion including second...
US-9,748,866 Power conversion apparatus and control method for power conversion apparatus when an instantaneous voltage drop...
A power conversion apparatus includes a DC/DC converter which transforms DC power input from a dispersion type power source into DC power, a capacitor which...
US-9,748,865 Power conversion device and three-phase alternating current power supply device
Provided is a power conversion device including: a conversion device for each phase which converts DC voltage inputted from a DC power supply, to voltage having...
US-9,748,864 Power supply circuits incorporating transformers for combining of power amplifier outputs and isolation of load...
A power supply circuit includes a power amplifier that receives a direct current (DC) voltage from a first power source. A control signal applied to the power...
US-9,748,863 System and method for leakage current suppression in a low switching frequency photovoltaic cascaded multilevel...
The cascaded multilevel inverter is considered to be a promising topology alternative for low-cost and high-efficiency photovoltaic (PV) systems. However, the...
US-9,748,862 Sparse matrix multilevel actively clamped power converter
Power converters are presented with one or more sparse multilevel actively clamped (SMAC) power converter stages, where the individual stages include an integer...
US-9,748,861 Method and device for operating an electrical power converter
A method for operating an N-level K-phase electrical power converter, wherein N is greater than or equal to 3 and K is greater than or equal to 1. The method...
US-9,748,860 Input filter pre-charge fed by a medium-voltage grid supply
A device includes a transformer configured to supply a pre-charge voltage to a capacitor and a converter configured for coupling to the transformer and...
US-9,748,859 Four-terminal circuit element with photonic core
A four-terminal circuit element is described that includes a photonic core inside of the circuit element that uses a wide bandgap semiconductor material that...
US-9,748,858 Solid state light source driver establishing buck or boost operation
A solid state light source driver circuit that operates in either a buck convertor or a boost convertor configuration is provided. The driver circuit includes a...
US-9,748,857 Method and system for a gas tube-based current source high voltage direct current transmission system
A high-voltage direct-current (HVDC) transmission system includes an alternating current (AC) electrical source and a power converter channel that includes an...
US-9,748,856 Modular multi-level converter controlling plurality of sub-modules
Provided is a modular multi-level converter including a plurality of sub-modules including switching elements, a plurality of sub-control units respectively...
US-9,748,855 Bidirectional DC-DC converter
A bidirectional DC-DC converter is disclosed. According to the bidirectional DC-DC converter, switching loss is reduced by implementing zero voltage switching...
US-9,748,854 Alternating current (AC)-direct current (DC) conversion circuit and control method thereof
An AC-DC conversion circuit includes an input rectifier circuit, a primary side input filtering capacitor, a primary side inverter circuit, a drive circuit, an...
US-9,748,853 Semi-dual-active-bridge converter system and methods thereof
One example embodiment is a method executed by a microcontroller with a Pulse Width Modulation (PWM) circuit to control a semi-dual-active-bridge (SDAB)...
US-9,748,852 Electrical circuit for delivering power to consumer electronic devices
An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and...
US-9,748,851 Switching power supply apparatus with snubber circuit
A switching power supply apparatus includes a first series circuit including a third rectifier device and a fourth rectifier device and that is connected...
US-9,748,850 Switching power-supply with switching frequency correction
A switching power-supply device applies a DC voltage to a primary winding of a transformer and performs a switching operation of a switching element connected...
US-9,748,849 Power supply
Provided is regulation of a line current. The regulation of the line current includes comparing a reference voltage with a line sensing voltage to generate a...
US-9,748,848 Modular multilevel DC/DC converter for HVDC applications
A DC converter is suitable for continuous operation for connecting high-voltage DC networks having different voltages. The DC converter has a first partial...
US-9,748,847 Circuits and methods providing high efficiency over a wide range of load values
An apparatus and method are disclosed for providing efficient operation in a feedback loop having a synchronous buck converter. The synchronous buck converter...
US-9,748,846 Power supply with droop control feedback for enhanced phase current sharing
A system, power supplies, controller and method for enhanced phase current sharing are disclosed. For example, a power supply for enhanced phase current sharing...
US-9,748,845 Method and apparatus for wide bandwidth, efficient power supply
An efficient power supply with fast, wideband response has been disclosed. In one implementation, two switching regulators with different frequency responses...
US-9,748,844 Systems and methods for controlling and improving power converters
An electronic device includes a controller configured to regulate one or more voltages or currents of a power converter. The controller is configured to receive...
US-9,748,843 DCR inductor current-sensing in four-switch buck-boost converters
An inductor current-sensing circuit for measuring a current in an inductor includes (a) a first RC network coupled between a first terminal of the inductor and...
US-9,748,842 Sense circuit for voltage converter
A system including a first power transistor including a gate, a second power transistor including a gate and connected in series with the first power...
US-9,748,841 Multilevel boost DC to DC converter circuit
Described examples include DC to DC converters and systems with switching circuitry formed by four series-connected switches, inductors connected between the...
US-9,748,840 Controller for a power converter and method of operating the same
A controller for use with a power converter including a switch configured to conduct to provide a regulated output characteristic at an output of the power...
US-9,748,839 Digital voltage regulator controller with multiple configurations
A digital voltage regulator controller includes control logic, an interface and configuration logic. The control logic is operable to control power stages of a...
US-9,748,838 Method of operating a controller for a power converter, and a corresponding controller
A method of operating a controller for a power converter having a plurality of switches couplable to respective electrical devices is disclosed, in which the...
US-9,748,837 Time delayed converter reshuffling
Dynamic power management techniques and voltage converter architectures are described to provide a secure and efficient on-chip power delivery system. In...
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