Abstract: A drive arrangement for motorized adjustment of a closure element of a motor vehicle comprising a drive having an electric drive motor and comprising a drive control for actuation of the electric drive, wherein the drive arrangement is connected to a supply voltage, wherein the drive control may include a control unit and a driver unit which may be actuated by the control unit, wherein the driver unit is used for the electric supply of the drive motor to generate drive movements. The drive control may be brought into a holding state in which the driver unit operates in a holding mode, that the driver unit interacts with the drive motor in the holding mode to hold the closure element in an intermediate position and that the drive control has a supply switch which separates the driver unit in the holding state of the drive control from the supply voltage.

Abstract: To reliably rotate a step motor while reducing power consumption, a step motor driving device includes a step motor that includes a rotor, stator, coil, driver circuit that outputs a measurement drive signal to the coil, phase detecting circuit that detects a counter-electromotive current that is generated in the coil after the output of the measurement drive signal and determines whether a phase of the rotor is a desired phase based on the detected counter-electromotive current, and a control unit that, if the phase is the desired phase, controls the step motor by a first driving method in which the drive circuit outputs a first drive signal for rotating the rotor by one step, and, if not, controls the step motor by a second driving method different from the first driving method so as to restrict the rotation of the rotor.

Abstract: A motor driving apparatus for driving a motor, the apparatus being connected to the motor by first, second, and third connection lines respectively corresponding to first, second, and third phases, the apparatus including: an inverter converting direct-current voltage into three-phase alternating-current voltage by using first, second, and third switching element pairs respectively connected to the first, second, and third connection lines, and outputting the three-phase alternating-current voltage to the motor; a voltage detection circuit detecting a first voltage based on a potential difference between a potential of the first connection line and a reference potential; and a control unit calculating a voltage value of the direct-current voltage based on the first voltage during a first period in which an upper-arm switching element of the first switching element pair is on, controlling operation of the inverter according to the voltage value, and changing the first period according to the voltage value.

Abstract: An electric motor drive device includes: a main substrate mounted with a power supply circuit that generates, on the basis of alternating-current power supplied from an alternating-current power supply, a drive power to drive a compressor motor; a plurality of connection switching relays that perform switching between connections for the compressor motor; a small substrate mounted with the connection switching relays; a relay drive circuit that switches the connection switching relays; lead wires that connect the compressor motor and the small substrate to the power supply circuit; and lead wires that connect the small substrate and the compressor motor.

Abstract: A timepiece movement includes a stepping motor having a rotor for rotating an indicating hand, and a control unit for rotating the rotor by using a main drive pulse and an auxiliary drive pulse. When the indicating hand is rotated using a detection drive pulse based on the main drive pulse, the control unit determines a reference position of the indicating hand by detecting a rotation state of the rotor.

Abstract: The invention provides an adaptive inertial control method based on IIDG (Inverter Interfaced Distributed Generator) of a virtual synchronous motor. By building an adaptive virtual inertia and IIDG output frequency model, the adaptive control sensitive factor is selected from a model according to the virtual synchronous motor dynamic response features; the adaptive inertial upper and lower limits are selected from a model according to the energy storage configuration constraint; the IIDG optimization control strategy is obtained. The control on the grid-connected inverter distributive power supply can be realized, so that the IIDG output is more stable; the interference on the system can be well handled; meanwhile, the characteristics of small overshoot and fast response are realized; the ultra-high dynamic features are realized.

Abstract: A selection circuit generates a voltage VS of a switching terminal VS or a power supply voltage VCC, whichever is higher, in a common line. A regulator stabilizes a voltage VCOML of a reference line at a level lower than a voltage VCOM of the common line by a predetermined voltage difference ?V. A charge pump circuit is provided between the common line and the reference line and steps up a voltage difference ?V between the common line and the reference line. A rectifying element charges a bootstrap capacitor between a bootstrap terminal and the switching terminal, with an output voltage of the charge pump circuit.

Abstract: A power electronics assembly for a mobile application includes a first power electronics component selectively coupled to a high source on a first side and coupled to a high voltage battery on a second side, a second power electronics component selectively coupled to one of a low load or a low voltage battery on a first side and coupled to the high voltage battery on a second side; and a controller, including an operating mode circuit structured to determine a discharge operating mode for the mobile application, a power electronics configuration circuit structured to provide a switch state value for the first power electronics component and the second power electronics component in response to the discharge operating mode, and wherein the first power electronics component and the second power electronics component are responsive to the switch state value to coupled selected ones of the high source, low load, and low voltage battery to the high voltage battery.

Abstract: A power conversion apparatus includes a main circuit unit, a control unit, a current sensor, and a half-wave rectifier unit. The control unit includes current frequency calculation units and monitoring units. The current frequency calculation units calculate current frequencies based on at least either the rising timing or falling timing of current detection signals half-wave rectified by the half-wave rectifier unit. The monitoring units monitor the speed of a motor based on the current frequencies calculated by the current frequency calculation units.

Abstract: Provided is a motor drive device comprising a motor control unit that controls a plurality of upper arm-side switching elements and a plurality of lower arm-side switching elements provided to an inverter for driving a motor; a current determination unit that determines whether a motor current flowing through at least one switching element of the plurality of upper arm-side switching elements and the plurality of lower arm-side switching elements is equal to or smaller than a threshold value; and a short-circuit control unit that performs switching between all-on of the plurality of upper arm-side switching elements and all-on of the plurality of lower arm-side switching elements, on condition that the motor current is equal to or smaller than the threshold value, in a short-circuiting operation of alternately switching all-on of the plurality of upper arm-side switching elements and all-on of the plurality of lower arm-side switching elements.

Abstract: A semiconductor module includes: a first terminal portion and a second terminal portion each connected to outside; and a first current path and a second current path to connect between the first terminal portion and the second terminal portion in parallel. The first current path includes: a first semiconductor device; a first wiring portion and a second wiring portion. The second current path includes: a second semiconductor device; a third wiring portion; and a fourth wiring portion. A power conducting capability of the first semiconductor device is lower than a power conducting capability of the second semiconductor device, and a total of an impedance of the first wiring portion and an impedance of the second wiring portion is lower than a total of an impedance of the third wiring portion and an impedance of the fourth wiring portion.

Abstract: Gate driver bootstrap circuits and related methods are disclosed. An example gate driver stage includes a first terminal and a second terminal, the first terminal to be coupled to a capacitor, the capacitor and the second terminal to be coupled to a gate terminal of a power transistor, a gate driver coupled to the first terminal and the second terminal, and a bootstrap circuit coupled to the first terminal, the second terminal, and the gate driver, the bootstrap circuit including a control stage circuit having an output and a first transistor having a first gate terminal and a first current terminal, the first gate terminal coupled to the output, the first current terminal coupled to the first terminal.

Abstract: A driving circuit for a semiconductor circuit which includes a pair of main terminals through which a main current is conducted and a control terminal to which a control voltage is applied to control a circulation state of the main current, includes: driving voltage switching circuitry that receives a control signal, instructs switching between driving voltages based on a change in the control signal, and outputs a driving voltage, among the driving voltages, that has been selected in the switching; low-speed control circuitry that instructs an increase-decrease change in the control voltage at a low speed; speed-increase control circuitry that executes a speed-increase control of increasing a speed of the increase-decrease change made by the low-speed control circuitry; and speed-increase switching circuitry that instructs switching between an execution and a non-execution of the speed-increase control, and instructs switching between levels of a speed-increase change caused by the speed-increase control.

Abstract: A regenerative power conversion system with a phase shift transformer having a primary circuit and N secondary sets of M secondary circuits, a controller synchronizes rectifier switching control signals of individual regenerative power stages to a phase angle of a corresponding one of the secondary circuits based on a feedback signal of the primary circuit during regenerative operation of the power conversion system.

Abstract: A display including a supporting stand and a display panel is provided. The supporting stand has a rotating assembly, a drive motor, and a microcontroller. The display panel has a computing device. The drive motor is connected to the rotating assembly for driving the rotating assembly to rotate. The microcontroller is coupled to the drive motor for controlling the drive motor. The display panel is disposed on the rotating assembly. The computing device is coupled to the microcontroller. The computing device is configured to read an image. The computing device transmits a signal to the microcontroller based on an orientation of the image being portrait or landscape so that the microcontroller switches on the drive motor and the rotating assembly drives the display panel to rotate relative to the supporting stand for switching a rotating position of the display panel to a portrait mode or a landscape mode.

Abstract: A power conversion apparatus includes: an inverter unit; a first capacitor group, an positive electrode of the first capacitor group connected to an positive electrode on the DC input side of the inverter unit; a second capacitor group, a negative electrode of the second capacitor group connected to a negative electrode of the DC input side of the inverter unit; a first terminal portion connected to the positive electrode of the first capacitor group; a second terminal portion connected to a negative electrode of the first capacitor group; a third terminal portion connected to an positive electrode of the second capacitor group; and a fourth terminal portion connected to the negative electrode of the second capacitor group, wherein a distance between the first terminal portion and the third terminal portion is approximately equal to a distance between the second terminal portion and the fourth terminal portion.

Abstract: The motor driving apparatus includes a switch that is a mechanical switch for changing coil connection states of a motor; an inverter that generates alternating voltage from direct voltage and outputs the alternating voltage to the motor; and a control device that controls the switch and the inverter. The control device causes the switch to change the coil connection states while the alternating voltage output from the inverter is zero.

Abstract: A motor control device includes an optimal voltage calculation part configured to calculate an input voltage that is a lowest total of electric power losses generated by an inverter, a motor and a converter, a lowest voltage calculation part configured to calculate a lowest value of the input voltage required at a motor operating point, and a target value setting part configured to set any one of the optimal input voltage and the lowest input voltage as the target input voltage, and the target value setting part sets the lowest input voltage lower than the optimal input voltage to the target value when the element temperature of the inverter and the converter is equal to or greater than a predetermined value.

Abstract: The present invention provides a series shunt wound direct-current (DC) motor driving device and electrical equipment. The series shunt wound DC motor driving device provided by the present invention includes a series shunt wound DC motor, a DC power supply and a chopper.

Abstract: A motor control apparatus includes: a converter configured to convert alternating current power of an AC source into direct current power; an inverter configured to convert the direct current power in a DC link into alternating current power for motor driving by the switching device being subjected to ON/OFF control, a DC link voltage detection unit configured to detect a DC link voltage, a DC link voltage determination unit configured to determine whether the DC link voltage exceeds a voltage threshold value, an alarm signal output unit configured to output an alarm signal in an abnormal condition; and a switching control unit configured to perform ON/OFF control on the switching device, and, when the alarm signal is output and the DC link voltage exceeds the voltage threshold value, the switching control unit performs control in such a way as to turn on all the switching device of a lower arm.