The present invention relates to a method for reducing common mode current in power electronic equipment comprising two or more active front end (AFE) components (1) coupled in parallel between an AC supply grid (2) and a DC-link (3). A duty cycle of pulse width modulation (PWM) for the AFE components (1) is determined, and an error signal is derived based on the determined duty cycle of PWM and on a common mode current of the AFE components (1). A correction voltage is derived, based on the error signal, and a DC voltage control signal is derived based on the derived correction voltage and a measured DC voltage of the DC-link (3) and/or a DC voltage reference. The power electronic equipment is controlled in accordance with the derived DC voltage control signal. The present invention also relates to a method for starting active front end (AFE) components (1) of power electronic equipment comprising two or more AFE components (1) coupled in parallel between an AC supply grid (2) and a DC-link (3).

A system for supplying at least one electrical load or energy storage device with direct current by way of a plurality of electrical generators that are mounted to at rollers, in particular track rollers or support rollers, of a cable car system. The output of each of the generators leads to a respective AC/DC converter. All AC/DC converters are controlled or regulated by a control unit to the extent that at least approximately identical constant voltages are present at their outputs. The outputs of all AC/DC converters are connected to one another and are connected to the at least one load or energy storage device.

A system for supplying at least one electrical load or energy storage device with direct current by way of a plurality of electrical generators that are mounted to at rollers, in particular track rollers or support rollers, of a cable car system. The output of each of the generators leads to a respective AC/DC converter. All AC/DC converters are controlled or regulated by a control unit to the extent that at least approximately identical constant voltages are present at their outputs. The outputs of all AC/DC converters are connected to one another and are connected to the at least one load or energy storage device.

An energy acquisition and power supply system is provided. The power supply system includes a plurality of power elements, each of the power elements including a transistor capable of conduction path switching, a current regulator having a dynamic substrate selection circuit and a reverse leakage current suppression circuit as well as a voltage regulator, wherein the dynamic substrate selection circuit selects a substrate potential of the transistor capable of conduction path switching dynamically to reduce a substrate leakage current of the transistor capable of conduction path switching, and the reverse leakage current suppression circuit is utilized for switching the power element at a local end to reduce transient reverse leakage current and current consumption of the power element at the local end for an input voltage, such that an output current for the power element at the local end is maximized.

An energy acquisition and power supply system is provided. The power supply system includes a plurality of power elements, each of the power elements including a transistor capable of conduction path switching, a current regulator having a dynamic substrate selection circuit and a reverse leakage current suppression circuit as well as a voltage regulator, wherein the dynamic substrate selection circuit selects a substrate potential of the transistor capable of conduction path switching dynamically to reduce a substrate leakage current of the transistor capable of conduction path switching, and the reverse leakage current suppression circuit is utilized for switching the power element at a local end to reduce transient reverse leakage current and current consumption of the power element at the local end for an input voltage, such that an output current for the power element at the local end is maximized.

A multiphase power converter comprises a regulator, a value-supply system arranged for collecting at least one operating point of the power converter, and a predictor for determining updated phase statuses, for activating or deactivating each of the phases (11.sub.1, 11.sub.2, 11.sub.3, . . . ) during a further operation of the power converter. The updated phase statuses are determined using a process based on the at least one collected operating point and predictor parameters obtained from a machine-learning process.

A rectifying circuit includes, in part, first and second NMOS transistors, an impedance matching network, and an RF block circuit. The source and gate terminals of the first NMOS transistor respectively receive the ground potential and a biasing voltage. The second NMOS transistor has a gate terminal coupled to the drain terminal of the first NMOS transistor, a drain terminal coupled to the gate terminal of the first NMOS transistor, and a source terminal receiving the ground potential. The impedance matching network is disposed between the antenna and the drain terminals of the first and second NMOS transistors. The RF block circuit is coupled between the drain terminals of the first and second NMOS transistors and the output terminal of the rectifying circuit. The RF block circuit is adapted to prevent the RF signal from flowing into the output terminal of the rectifying circuit.

A power converting apparatus includes: a first arm including a switching element and a switching element connected in series; a second arm including a switching element and a switching element connected in series, the second arm being connected in parallel with the first arm; a reactor having one end connected to the switching element and the switching element and an opposite end connected to an alternating-current power supply; and a smoothing capacitor connected in parallel with the first arm and the second arm. The loss characteristic of the switching element and the second switching element that occurs in each switching event is better than the loss characteristic of the switching element and the switching element that occurs in each switching event.

An electrical energy production system includes a diesel engine that is functionally coupled to a three-phase current generator device, the generator device is functionally coupled to an electrical intermediate circuit, the electrical intermediate circuit is functionally coupled to an electric consumer device and a passive rectifier and a pulse rectifier are connected in parallel in the intermediate circuit. An electrical intermediate circuit voltage of the electrical intermediate circuit is provided, in a defined manner, from the passive rectifier and the pulse rectifier. A set point or nominal value of the electrical intermediate circuit voltage is supplied to the pulse rectifier and the pulse rectifier provides a defined portion of the electrical intermediate circuit voltage. A method for operating an electrical energy production system and a computer program product are also provided.

An electric power supply includes a totem pole bridgeless PFC power converter. The PFC power converter includes an input for coupling to an AC power source, an output, four switching devices coupled between the input and the output, two diodes coupled between the four switching devices and the input, a first inductor coupled between the four switching devices and the two diodes, and a second inductor coupled between the two diodes and the input. Other example electric power supplies and totem pole bridgeless PFC power converters are also disclosed.