A hybrid electrical machine containing surface mounted magnets which includes a magnetically permeable cylindrically shaped stator assembly having at least one stator winding formed about a plurality of stator teeth, a rotor assembly concentrically disposed within the stator assembly, including a magnetically permeable rotor backiron, a rotational drive mechanism coupled to the rotor backiron, and a plurality of protruding rotor poles, each including a magnetically permeable pole support assembly, a winding provided around the pole support assembly, and a radially magnetized permanent magnet assembly disposed about the pole support assembly.

In a control apparatus for a rotary electric machine, a first manipulation unit manipulates, as control for a predetermined first region with respect to the controlled variable, a voltage phase of a voltage vector applied to an armature winding while controlling a field current to cause a deviation between an amplitude of an induced voltage and an amplitude of a predetermined voltage to be equal to or smaller than a predetermined value, the induced voltage being generated in the armature winding based on rotation of the rotor, the predetermined voltage being applied to the armature winding; A second manipulation unit that manipulates, as control for a second region that is larger than the first region, the field current such that the controlled variable is controlled to the target value.

The present application provides a method and device for controlling a generator-side terminal voltage of a converter, and a controller of the converter. The method includes: determining a target value upper limit of the generator-side terminal voltage based on a current voltage value of a direct-current (DC) bus of the converter, wherein the generator-side terminal voltage is a terminal voltage of a generator whose output terminal is connected to the converter; determining a target value of the generator-side terminal voltage that is able to minimize a generator-side current at present, and using the determined target value of the generator-side terminal voltage as an optimal target value of the generator-side terminal voltage, wherein the generator-side current is an output current of the generator; setting the target value of the generator-side terminal voltage based on the determined target value upper limit of the generator-side terminal voltage and the optimal target value.

The present application provides a method and device for controlling a generator-side terminal voltage of a converter, and a controller of the converter. The method includes: determining a target value upper limit of the generator-side terminal voltage based on a current voltage value of a direct-current (DC) bus of the converter, wherein the generator-side terminal voltage is a terminal voltage of a generator whose output terminal is connected to the converter; determining a target value of the generator-side terminal voltage that is able to minimize a generator-side current at present, and using the determined target value of the generator-side terminal voltage as an optimal target value of the generator-side terminal voltage, wherein the generator-side current is an output current of the generator; setting the target value of the generator-side terminal voltage based on the determined target value upper limit of the generator-side terminal voltage and the optimal target value.

The present disclosure relates to a power generator and method of generating AC or DC power, including the removal of reverse torque and utilizing the electromagnetic coils of a generator stator to harvest the inherent energy available in the magnetic domains of ferromagnetic and paramagnetic materials of pole pieces of a generator rotor. The method comprises: determining an excitation cycle based on a target frequency of the power generator; executing the excitation cycle by providing a current to one or more wires of the generator according to a predefined sequence to align magnetic domains of the salient pole pieces of the generator rotor to produce an evolving magnetic flux field; and routing a resultant current, generated by the magnetic flux field, to a power output. Systems and apparatuses disclosed herein comprise means for carrying out the same.

Systems and methods for voltage regulation of high voltage direct current systems are provided. In certain embodiments, a system includes a generator that generates alternating current (AC) voltage. The system further includes a power converter that converts the AC voltage into regulated direct current (DC) voltage. Also, the system includes a voltage regulator. In additional embodiments, the voltage regulator includes an AC voltage regulator that regulates the AC voltage generated by the generator. Also, the voltage regulator includes a DC voltage regulator that regulates the DC voltage produced by the power converter. Moreover, the voltage regulator includes a regulator selector that selectively activates one of the AC voltage regulator and the DC voltage regulator based on a current from the power converter and at least one of a voltage of the generator and a voltage of the power converter.

An input end of a first power conversion circuit of the system is connected to a power supply, and an output end of the first power conversion circuit is connected to a stator winding of an electrical excitation motor. An input end of a second power conversion circuit is connected to the power supply, and an output end of the second power conversion circuit is connected to a primary side of an excitation transformer. The excitation transformer transmits energy required by an excitation winding of the electrical excitation motor from a stator to a rotor. A first controller controls the first power conversion circuit to inject a current excitation into the stator winding, so that a current is generated on the excitation winding. A detection circuit obtains a response signal of the primary side of the excitation transformer and sends the response signal to a second controller.

An input end of a first power conversion circuit of the system is connected to a power supply, and an output end of the first power conversion circuit is connected to a stator winding of an electrical excitation motor. An input end of a second power conversion circuit is connected to the power supply, and an output end of the second power conversion circuit is connected to a primary side of an excitation transformer. The excitation transformer transmits energy required by an excitation winding of the electrical excitation motor from a stator to a rotor. A first controller controls the first power conversion circuit to inject a current excitation into the stator winding, so that a current is generated on the excitation winding. A detection circuit obtains a response signal of the primary side of the excitation transformer and sends the response signal to a second controller.

An electronic timepiece, including: a motor having a rotor and at least two coils, the rotor being configured to rotate to a plurality of prescribed positions; and a driving processor for driving the motor, the driving processor being configured to: generate a detection pulse for detecting whether or not the rotor has rotated; cause the generated detection pulse to be applied to at least one of the at least two coils; receive a signal indicating a detected value of current flowing in the at least one of the at least two coils that is generated in response to the detection pulse outputted to the at least one of the at least two coils; and determine whether or not the rotor has rotated to one of the plurality of prescribed positions on the basis of the detected value of current.

The present disclosure relates to a circuit device for demagnetizing the rotor of an externally excited synchronous machine and to a method for operating the circuit device.