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Motor drive control device
A motor drive control device uses a rotor position sensorless control scheme to drive a motor. The motor drive control device includes a rotational speed...
Variable link sensorless brushless direct current motor controller for
space and hardened applications
A sensorless motor controller includes a variable link control, including a radiation-hardened field programmable gate array (FPGA) and a back electromotive...
Control system for a synchronous machine and method for operating a
The invention relates to a method for operating a synchronous machine, comprising the following steps: determining a difference value between the rotor...
Converter for an electrical machine and method for controlling a power
The present invention specifies a converter for an electrical machine. A power circuit breaker (T1) comprises at least two semiconductor elements (9, 10)...
Motor control device having protective unit of charging resistor
A motor control device includes a rectifier, a smoothing capacitor provided to a DC link, an inverter that power-converts DC power of the DC link and AC power...
Vortex resonance wind turbine
Wind turbine consisting of an anchoring to the ground or to a base and a mast, the natural oscillation frequency of which is purposely adjusted to the frequency...
Device for recovering and converting heat energy into electrical energy
A device for converting heat energy into electrical energy including cells, the cells including: a first cavity with one wall for contacting a heat source; a...
To reduce attenuation of vibration in provision of a tactile sensation when both of a piezoelectric element for providing a tactile sensation and a...
Power conversion apparatus and electric power steering apparatus having
A power conversion apparatus includes: an inverter unit having high and low potential-side switching elements corresponding to each phase of a winding of a...
Method for controlling a power bridge, and corresponding control device,
power bridge and rotary electric...
A method performed in a power bridge (3) comprising multiple arms (B1, B2, Bi, Bn). Each arm comprises upper and lower semiconductor switches arranged in series...
Method and apparatus for generating single-phase power from a three-phase
resonant power converter
A method and apparatus for providing AC power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a DC value based on a...
Dual mode micro-inverter system and operation
A dual mode direct current-to-alternating current (DC-AC) micro-inverter is capable of operating either with or without connection to an active external AC...
Tracking method and tracking device for a voltage converter for a
The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate...
Adaptive peak power control
A switching power converter includes a controller configured to transition from a first operating mode to a second operating mode by determining the operating...
Circuit arrangement with a rectifier circuit
In accordance with an embodiment, a method includes receiving by a drive circuit electrical power from a voltage tap of a first rectifier circuit that includes...
Rectifier circuit with current injection
The present invention relates to a rectifier circuit with a three-phase rectifier arrangement (1) of semiconductor valves (2), preferably a bridge rectifier...
Mechanical arrangement of a multilevel power converter circuit
A mechanical arrangement of a multilevel power converter circuit includes a power converter having a first portion with a plurality of first control inputs, at...
State quantity detection method in power converting apparatus and power
A current-source converter includes high-arm side switching elements and low-arm side switching elements. A voltage between the DC power supply lines is...
Power conversion apparatus with induction control
Disclosed is a power conversion apparatus with further reduced inductance of conductors coupling condensers. The power conversion apparatus includes a smoothing...
Multiple-input isolated push-pull connected power converters
A multiple-input power converter transferring energy from multiple input sources to a load. The multiple-input power converter utilizes a push-pull converter...
Active reduced voltage switching using secondary switch
A controller includes a primary controller and a secondary controller to control switching of a power switch and a secondary switch, respectively, coupled to an...
Power supply device and power supply switching method
A power supply device (10) includes a plurality of constant current output circuits (14) that can supply power to a load (12). The constant current output...
Method and apparatus for determining a bridge mode for power conversion
A method and apparatus for controlling power conversion. In one embodiment, the method comprises computing a ratio based on both voltage and charge pertaining...
Voltage converter that steps up low starting voltages to higher voltages
The present invention relates to a voltage converter circuit for transforming a low voltage applied to its input into a higher output voltage at an output. The...
Isolated power converter and associated switching power supply
In one embodiment, an isolated power converter can include: (i) a transformer having a primary winding and a secondary winding; (ii) a secondary rectifier...
Current resonance type power supply device
Embodiments of the invention may include: a series circuit connected to a junction of a first switch element and a second switch element connected in series...
Electrical power conversion device including normally-off bidirectional
A normally-off bidirectional switch having two gates is connected to a transformer. The transformer has a first winding and a second winding. A first gate bias...
DC-DC converter with LC resonance circuit and transformer
A DC-DC converter includes a capacitor configured to be charged for a predetermined period by an external voltage, an inductor configured to constitute an LC...
DC/DC converter, control circuit thereof, power supply, power adapter and
electronic apparatus using the same
A control circuit of a DC/DC converter having a transformer, a switching transistor, and a detector includes: a feedback terminal receiving a feedback voltage...
Electronic apparatus and power controlling method thereof
An electronic apparatus and a power controlling method thereof are provided. The electronic apparatus includes a system unit supplied with power to conduct an...
Switched mode power supply with a simplified start-up supply
A switched mode power supply (SMPS) is disclosed in which a simple primary side controller is used to send a single pulse of energy to the secondary side to...
Apparatus and efficiency point tracking method for high efficiency
A converter comprises an input stage coupled to a power source, wherein the input stage comprises a plurality of power switches, a resonant tank coupled to the...
Switch mode power supply module and associated hiccup control method
The invention concerns a method and device for controlling the switching operation in a switch mode power supply module. The switch mode power supply module is...
Methods and apparatuses for obtaining voltage information based on charge
packets input at different timings
Disclosed is a voltage obtaining apparatus. The voltage obtaining apparatus includes a plurality of conversion units, which are connected to each other in...
Voltage regulator using a variable switching frequency
A method for controlling a voltage regulator includes monitoring an output current and an inductance of an output inductor in a voltage regulator, wherein the...
Clocked pulse frequency modulation buck DC-to-DC converter
A hysteretic mode control circuit within a DC-to-DC converter is configured for varying the current limit that controls the switching interval and duration of a...
Circuits and methods for providing current to a load
The present disclosure includes switching regulator circuits and methods. In one embodiment, cross coupled circuits are provided. In one embodiment, a first...
A DC-DC converter, adapted to control a converting circuit to convert an input voltage into an output voltage, is disclosed. The converting circuit comprises a...
Systems and methods to calibrate switching regulators
Various embodiments of the invention provide for a double measurement technique to enable auto-calibration of a switching regulator. In certain embodiments,...
DCDC converter including clock generation circuit, error amplifier and
To provide a DCDC converter achieving low power consumption. A clock generation circuit, an error amplifier, a comparator, and a timer are included in a control...
A switching regulator includes a load determination circuit. The load determination circuit feeds, to an offset voltage generation circuit, a different load...
Switching regulator control circuit and switching regulator
Provided is a switching regulator configured to achieve a 100% Duty state and reduce an occurrence of an overshoot. The switching regulator has a configuration...
The present invention includes: a zero crossing detection circuit which outputs a zero crossing signal when an inductor's regeneration period is completed; a...
Auto-tuning switching regulator
In an example, a system and method are disclosed for providing a single control law that is operable to regulate both small-signal, steady-state operation, and...
System and method for controlling a power supply during discontinuous
In accordance with an embodiment, a controller for a switched mode power supply includes an average current comparator that determines whether an average...
System and method for a converter circuit
In accordance with an embodiment, a circuit includes a switch coupled between a first reference terminal and a first output terminal, an inductive element...
Step-up/step-down voltage converter having low output ripple
A voltage converter device converts an input signal having a given input voltage value into an output signal having an output voltage different from the input...
Acoustic noise mitigation using periodicity disruption
In one or more embodiments, a fixed time interval for a system is determined. The fixed time interval corresponds to time between clock ticks. A random time...
Boost PFC converter, method and control circuit used for boost PFC
A boost PFC converter, a method and a control circuit used for boost PFC converter are discussed in the present invention. The boost PFC converter decreases the...
Sepic-type voltage converter
A SEPIC-type voltage converter for converting an input voltage supplied by a power supply into an output voltage comprises an inductive component comprising...