The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.

The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.

A linear motor comprises a stator, the stator comprising multiple drive coils and an intermediate circuit electrically conductively connected to each drive coil, the intermediate circuit being configured to exchange energy with each drive coil. The drive coils are arranged along the running rail, where at least one slide comprising a magnet acting as a rotor of the linear motor is movably arranged on the running rail. A controller is configured to independently control each drive coil, so that electrical energy is fed from the intermediate circuit into the drive coils, if a measured intermediate circuit voltage is greater or equal to a predetermined intermediate circuit voltage threshold value, where those drive coils are excluded from the feed-in of the electrical energy which are instantaneously being used for driving or braking the at least one slide and/or have a thermal load which exceeds a predetermined thermal load threshold value.

An electrical power conversion device is provided which includes a stack of semiconductor modules and a plurality of cooling pipes. Each of the cooling pipes includes a first and a second outer shell plate which are electrically conductive. Each of the outer shell plates includes a flow-path defining portion which defines a coolant flow path between the outer shell plates and a flow-path outer periphery forming a circumference of the flow-path defining portion. The flow-path outer periphery of at least one of the outer shell plates has formed thereon an outer shell protrusion which is laid to overlap power terminals or control terminals extending from the semiconductor module to cancel a magnetic flux, as developed around the power terminals or the control terminals, thereby decreasing the inductance of the power terminals or the control terminals.

A totem-pole bridgeless PFC conversion device includes a conversion unit, a control unit, a current detecting unit and a phase detecting unit. When the control unit determines that a peak value of an input current is within a predetermined interval between a positive current value and a negative current value based on a current signal of the current detecting unit and a phase signal of the phase detecting unit, the control unit controls the conversion unit to operate in a discontinuous conduction mode (DCM). When the control unit determines that the peak value of the input current is not within the predetermined interval, the control unit controls the conversion unit to operate in a critical conduction mode (CRM).

Each of a P-side IGBT and an N-side IGBT connected in series to implement an arm includes a first gate and a second gate. In each of a drive circuit unit configured to control a voltage of the first gate with respect to a collector of the P-side IGBT, a drive circuit unit configured to control a voltage of the second gate with respect to an emitter of the P-side IGBT, and a drive circuit unit configured to control a voltage of the second gate with respect to a collector of the N-side IGBT, a signal processing circuit and an output circuit are electrically isolated from each other by an isolation structure.

Improved electronic interface device (120) between an electromagnetic energy harvesting stage (110) provided with an inductance and a load stage (130-140), the electronic interface device being provided to allow tending the charge seen by the harvesting stage towards an optimal charge and thus being able to extract a maximum of energy from this energy harvesting stage (110).

A power converter comprising an energy transfer element is coupled between an input of the power converter and an output of the power converter. A cascode circuit generates a first sense signal and a second sense signal. A controller controls the switching of the cascode circuit to transfer energy from the input of the power converter to the output of the power converter. The controller comprising a current sense circuit generates a current limit signal and an overcurrent signal in response to the first sense signal and the second sense signal. A control circuit generates a control signal in response to the current limit signal and the overcurrent signal. A drive circuit comprising a first stage gate drive circuit generates a drive signal in response to the control signal to reduce EMI, and a second stage of gate drive circuit to enable accurate current sensing of the cascode circuit.

The present disclosure provides to a power converter including an AC input terminal (ACin), a neutral terminal (N), an AC output terminal (ACout), an AC/DC converter circuit (210) connected between the AC input terminal, a positive DC terminal (DCP), and a negative DC terminal (DCN), a DC capacitor (C15) connected between the positive DC terminal (DCP) and the negative DC terminal (DCN), a line frequency commutated neutral circuit (220) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), and the neutral terminal (N), and a DC/AC converter circuit (230) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), the AC output terminal (ACout), and the neutral terminal (N). The power converter further includes an auxiliary converter circuit (240) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), and the neutral terminal (N).

The present disclosure provides to a power converter including an AC input terminal (ACin), a neutral terminal (N), an AC output terminal (ACout), an AC/DC converter circuit (210) connected between the AC input terminal, a positive DC terminal (DCP), and a negative DC terminal (DCN), a DC capacitor (C15) connected between the positive DC terminal (DCP) and the negative DC terminal (DCN), a line frequency commutated neutral circuit (220) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), and the neutral terminal (N), and a DC/AC converter circuit (230) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), the AC output terminal (ACout), and the neutral terminal (N). The power converter further includes an auxiliary converter circuit (240) connected between the positive DC terminal (DCP), the negative DC terminal (DCN), and the neutral terminal (N).