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Support structure for solar modules
The invention relates to a support structure for solar modules, with an arrangement of posts mounted on a base. A carrier unit is pivotably mounted on each...
Solar panel rack
A solar panel rack may comprise one or more sheet metal brackets configured to attach solar panels to the solar panel rack. The sheet metal brackets may include...
Solar panel rack
A solar panel rack may comprise a vertical support, a transverse support, brackets attaching hollow beams to the transverse support, and brackets configured to...
Apparatus for estimating quantity of state relating to motor, and electric
The present application discloses an apparatus including: a motor model that reflects a characteristic of a motor and includes at least inputs pertaining to a...
Motor control devices and methods
A system and method for preventing thermal damage to an electric motor in a vehicle includes arrangements for monitoring the motor and detecting a cycle of the...
Dynamic power control for induction motors
An example electric motor including a conductive winding, a switching device, a rotor, and a controller is disclosed. The switching device is configured to...
Charging an energy storage device with a variable speed generator
Some embodiments relate to a power management system. The power management system includes a variable speed generator that provides a voltage output to a bus...
Fault-tolerant wind energy conversion system
This disclosure is directed to a fault-tolerant energy conversion system. A fault-tolerant doubly-fed induction generator (DFIG) for use with a wind energy...
Position estimation system and method for an electric motor
Systems and methods of estimating a motor position of a motor are disclosed. One exemplary system and method involve observing motor currents of the motor at...
Motor abnormality detection apparatus
A MGECU includes a locked state check part for checking whether a motor generator is in a locked state, a current value check part for checking whether a...
System comprising an electrically excited machine
A system includes an n-phase separately excited electrical machine, wherein n.gtoreq.1, and a controllable first energy store that has n parallel energy supply...
Electric motor control device and electric motor control method
An electric motor control device includes: a motor constant generator configured to generate a motor constant by using a temperature; a current control unit...
Systems and methods for adaptive motor speed control
A system including memory to store a plurality of sets of values, where each set is used to control speed of a different type of motor. A pulse width modulation...
Electric motor and motor control
Various embodiments of an electric motor and electronic control for an electric motor are disclosed. An exemplary electric motor comprises a single-phase...
Transmission of energy
Apparatus for transmitting energy comprising an electrical machine arranged to convert between electrical and mechanical energy, and comprising a rotor (20) and...
Vibration device and information processing apparatus
A disclosed vibration device includes a first vibrating motor that causes a first eccentric spindle to be rotated so that an angular velocity changes regularly...
Device and method for supplying an electric drive with electric current
The present invention relates to a device (100) and a method for supplying an electric drive (101) with electric current. For this purpose, three DC/DC...
Method for examining an electric energy accumulator
A method for checking an electric energy storage device for a blade angle adjustment drive of a wind turbine. The method includes blocking an electric motor,...
Motor driving circuit of EPB system for reducing dark current
Disclosed is a motor driving circuit of an EPB system which may reduce dark current. The present invention provides a motor driving circuit, including: a motor...
Single phase motor energy economizer for regulating the use of electricity
A system for controlling power from an AC voltage to an induction motor to reduce surge when power is restored to a power grid is disclosed including, a device...
Method and device for starting motors in weak grids
Method and device for starting a motor (12) in weak grids, especially asynchronous motors, which motor after start-up is supplied by a supply grid (13). The...
Vibration power-generating strain wave gearing
The strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear that is disposed coaxially therein and is flexible in the...
Integral preload mechanism for piezoelectric actuator
A piezoelectric actuator that may include a monolithic frame having an integral bias band that provides a resilient restoring force between a first contact...
Electrostatic induction conversion device and DC-DC converter
An electrostatic induction conversion device includes: an input-side electrostatic actuator that includes a first fixed electrode and a first movable electrode...
Vibration driven power generation element and method of manufacture
A vibration driven power generation element according to the present invention includes: a three dimensionally shaped movable comb tooth electrode comprising a...
Apparatus and methods for individual addressing and noise reduction in
Apparatus for generating a target physical effect, at least one attribute of which corresponds to at least one characteristic of a digital input signal sampled...
Inverter device capable of appropriately fixing a power module having a
switching element and a smoothing...
A compact inverter device that includes a power module having a switching element and a smoothing capacitor that converts electric power between DC power and AC...
Control of a DC-AC inverter with unbalanced loading
A three phase inverter consisting of three single phase legs using either switch mode or linear control is fed by a DC-DC converter to provide input output...
Method and apparatus for bypassing cascaded H-bridge (CHB) power cells and
power sub cell for multilevel inverter
Multilevel power converters, power cells and methods are presented for selectively bypassing a power stage of a multilevel inverter circuit, in which a single...
Power inverter with multi-fed on-board power supply for supplying a
An inverter includes a DC/AC converter connectable to a DC power grid, at least one DC/DC converter arranged upstream of the DC/AC converter and providing a...
AC/DC converter circuit for common three-phase AC input voltages and
method of operating such converter circuit
The invention relates to an AC/DC converter circuit (100) and a method for converting N.gtoreq.2 AC supply voltages (U1, U2, U3) into DC voltage. This is...
System and method for safe switching in an AC-to-AC converter
A system and method for controlling switching in an AC-AC converter is disclosed. A controller for the AC-AC converter determines a direction of current flow on...
Power conversion device
There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first...
System and method for series resonant converter protection
A resonant power supply is disclosed. The resonant power supply includes a series resonant configured to convert an input DC voltage to an output DC voltage....
Multi-output power supply apparatus enhancing a power imbalance between
There is provided a multi-output power supply apparatus capable of maintaining multiple output voltages in a balanced state by limiting a variable range of a...
Power conversion apparatus and method
A power conversion apparatus includes: a primary side full bridge circuit having a first arm circuit and a second arm circuit in parallel, a secondary side full...
Power supply and method for compensating low-frequency output voltage
A power supply has a power factor correction (PFC) circuit and a DC to DC conversion circuit. A DC to DC controller of the DC to DC conversion circuit acquires...
Rectifying circuit and method for an unbalanced two phase DC grid
The present invention relates to a rectifying method and circuit using a magnetically coupled double flyback converter. The main circuit can consist of only one...
There is provided a device in which superimposition of noise radiated from a circuit is reduced, and a noise reducing effect of a filter is ensured. A DC-DC...
Current resonance type DC-DC converter and method for operating current
resonance type DC-DC converter
A current resonance type DC-DC converter includes a transformer that has a primary winding and a secondary winding, a switching circuit that has a pair of first...
Systems and methods for high power DC/DC conversion using voltage
A voltage conversion system and methods are disclosed. Voltage converter cells are controlled using interleaved phase-shift modulation signals, and convert an...
DC to DC converter and method to transition the DC to DC converter from a
buck mode to a boost mode
A DC to DC converter including a buck converter, a boost converter, and a control unit, wherein the control unit is arranged to calculate an error voltage of...
Low thermal design for DC-DC converter
A DC-DC converter includes an input terminal Pin receiving an voltage input, switching circuits connected in parallel between the input terminal Pin and ground,...
Current controlling mode direct current (DC)-DC converter
There is provided a current controlling mode DC-DC converter that operates in a PWM mode or a PFM mode by adjusting a turned-on time of a gate depending on...
Load regulation compensation module and switching converter comprising the
A switching converter and a load regulation compensation module for improving load regulation accuracy of the switching converter. The switching converter...
Converter circuit and associated method
A converter control circuit for converting an input voltage to an output voltage comprises: an error amplifier, coupled to an output voltage or a feedback...
Methods of operating switched mode power supply circuits using adaptive
filtering and related controller circuits
A method of operating a switched mode power supply circuit can be provided by determining an error in a control signal for the switched mode power supply...
Voltage conversion device and method for adjusting common mode noise
The present invention provides a voltage conversion device and a method for adjusting common mode noise impedance, which relates to the circuit field, and...
DC-DC voltage converter and conversion method
A DC-DC converter uses a switched capacitor arrangement. A filter capacitor is connected between one terminal of the capacitor arrangement and a fixed voltage...
Reduced noise power converter using novel shield
Power converters that produce less noise are disclosed. For example, in an embodiment, power converter can include a first inductor magnetically coupled to a...