A system for controlling a switching network of a power regulation circuit arranged to regulate power transfer between a first and second circuit connected with the power regulation circuit includes one or more controllers receiving one or more first signals indicative of power characteristics of the first circuit and one or more second signals indicative of power characteristics of the second circuit. The controllers determine, based on the received signals and reference signals, a required power output for regulating power transfer between the first and second circuit, and then select, dynamically, a switching scheme, from predetermined switching schemes, based on the determination result. The predetermined switching schemes represent unique switching schemea for controlling switching of respective switches of the switching network. The controllers generate, based on the dynamically selected switching scheme, output signals for controlling switching of respective switches to regulate power transfer between the first and second circuit.

A circuit arrangement (10) for controlling a stator winding (11) of a stator (12) of an electric machine (13) is provided. The stator winding (11) has at least four electrical phases (), which are designed to be supplied with a separate phase current (I.sub.n), respectively. A modulation signal (M) is assigned to each electrical phase () and the modulation signals (M) are out of phase with respect to one another so that the stator winding (11) is designed to generate a rotary field. At least two carrier signals (T) are provided for generating the phase currents (I.sub.n), and the electrical phases () are divided into at least two groups, each of which is assigned a carrier signal (T). The carrier signals (T) have a phase shift () relative to one another. Furthermore, an electric machine (13) comprising a circuit arrangement (10) is provided.

The invention relates to a method for operating an electric synchronous machine, having the steps of:generating centered pulse-width-modulated switching signals for switching elements (T1 . . . T6) of half-bridges, wherein two switching elements (T1 . . . T6) are connected to a respective half-bridge in each case; second switching elements (T4 . . . T6) of each half-bridge are actuated in a complementary manner to the first switching elements (T1 . . . T3) of each half-bridge if a sufficient minimum measurement duration (T.sub.M) is thereby provided during which the switching signals of switching elements (T1 . . . T6) of two half-bridges lie at different potentials;otherwise:generating pulse-width-modulated switching signals for the switching elements (T1 . . . T6) of the half-bridges, said switching signals deviating from the center at least to such a degree that a sufficient minimum measurement duration (T.sub.M) is provided, whereinthe switching signals of the switching elements (T1 . . . T6) are designed such that temporal changes corresponding to the minimum measurement duration (TM) in the switching signals of the switching elements (T1 . . . T6) are prevented; andcarrying out a 1-shunt current measurement within the provided minimum measurement duration T.sub.M).

Employing a novel TT control scheme, several ZVS power inversion circuits are disclosed. In addition to achieving zero-voltage switching performance for high frequency operation, the disclosed power inversion circuits can alleviate or eliminate the potential shoot-through problem existed in phase-shift control full-bridge power inversion circuits. Consequently, reliability performance can be improved.

A phase shift full bridge (PSFB) converter includes: an isolation transformer; a full-bridge having a first pair of switch devices connected in series at a first node coupled to a first terminal of the primary side of the isolation transformer, and a second pair of switch devices connected in series at a second node coupled to a second terminal of the primary side of the isolation transformer; a rectifier coupled to the secondary side of the isolation transformer; and a controller for switching the first and second pairs of switch devices out of phase with each other. Under nominal input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a nominal switching frequency. Under reduced input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a frequency lower than the nominal switching frequency.

Switching control of an inverter is performed such that rising and falling of a terminal voltage of U phase including upper and lower arm switching elements are calculated, and the calculated rising of the terminal voltage of U phase and falling of a terminal voltage of V phase or W phase or the calculated falling of the terminal voltage of U phase and rising of the terminal voltage of V phase or W phase are synchronized with each other.

A phase shift full bridge (PSFB) converter includes: an isolation transformer; a full-bridge having a first pair of switch devices connected in series at a first node coupled to a first terminal of the primary side of the isolation transformer, and a second pair of switch devices connected in series at a second node coupled to a second terminal of the primary side of the isolation transformer; a rectifier coupled to the secondary side of the isolation transformer; and a controller for switching the first and second pairs of switch devices out of phase with each other. Under nominal input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a nominal switching frequency. Under reduced input voltage conditions for the PSFB, the controller switches the first and second pairs of switch devices at a frequency lower than the nominal switching frequency.

A method for controlling a PSFB converter, an apparatus, and a storage medium are disclosed, and relate to the field of power supply technologies. The method includes: controlling, by a control circuit after controlling a first clock and a second clock to operate in a first state for a time period, the first clock and the second clock to switch to a second state, where when the first clock and the second clock operate in the first state, the first bridge arm is a leading bridge arm, and the second bridge arm is a lagging bridge arm, and when the first clock and the second clock operate in the second state, the first bridge arm is a lagging bridge arm, and the second bridge arm is a leading bridge arm.

A method for dead time optimization of MOSFETs in an inverter of an motor controller of an electric motor in an electromechanical motor vehicle power steering mechanism or a steer-by-wire system. The inverter includes at least two MOSFETs comprising a high side MOSFET and a low side MOSFET, and wherein the motor controller controls the at least two MOSFETS with gate driver signals with a dead time. The dead time represents a time of the MOSFETs for switching over from one MOSFET to another MOSFET connected in series. The method includes the steps of measuring a cross conduction between the high side MOSFET and the low side MOSFET in a current measurement unit, and when a cross conduction occurs the dead time is increased, otherwise the dead time is decreased.

A resonant inverter apparatus supplies a high AC voltage to a discharge load. In this apparatus, an inverter circuit converts a DC voltage to an AC voltage using a plurality of switching elements. A transformer steps up the AC voltage and generates a high AC voltage. A DC voltage detecting unit detects a value of a DC voltage supplied to the inverter circuit. A control unit generates a driving pulse for performing on/off switching of the switching elements. The switching elements include first and second switching elements. The control unit performs phase angle control of the driving pulse. In response to the detected value of the DC voltage being greater than a reference value, the control unit sets a switching phase angle of the second switching element relative to the first switching element serving as reference, based on the magnitude of the valued of the DC voltage.