9 results about "Polyphase system" patented technology

An electric quantity balance control method includes: S1: obtaining remaining electric quantities of a plurality of energy storage devices; S2: calculating an average value of the remaining electric quantities of the plurality of energy storage devices; S3: subtracting the average value calculated in step S2 from the remaining electric quantity of each energy storage device to obtain a corresponding difference, and for each energy storage device, if the corresponding difference is greater than 0, increasing an output voltage of the energy storage device to increase its output power, otherwise if the corresponding difference is less than 0, reducing the output voltage of the energy storage device to decrease its output power. According to the energy storage device alternating current multi-phase system and the electric quantity balance control method therefor provided in the present invention, the problem of the overall endurance of the system being greatly shortened is effectively solved.

The invention relates to vector control for multi-phase systems. A circuit for vector control includes a shift mode selector, a shift signal generator, and driver circuitry. The shift mode selector is configured to select a first shift mode from a plurality of shift modes based on the hysteresis value, the angle of the current voltage reference, and the angle of the previous voltage reference. The shift signal generator is configured to generate a first pulse modulated signal for the first phase and a second pulse modulated signal for the second phase based on the selection of the first shift pattern and the current voltage reference. The driver circuitry is configured to control the switching circuitry to generate a first phase signal for a first phase based on the first pulse modulated signal and to generate a second phase signal for a second phase based on the second pulse modulated signal.

This application relates to the field of power system technology, specifically providing a detection method and inverter system for locating faulty relays. It aims to solve the problems of existing relay failure detection schemes being unable to accurately locate specific faulty relays, or requiring complex sampling circuits and consuming excessive resources. To this end, the detection method provided in this application includes: acquiring combined on / off logic based on preset detection timing; outputting three sets of control signals, respectively used to control the on / off of an inner and outer relay on one phase line, the remaining phase lines, and the neutral line; performing voltage detection; and locating the faulty relay based on the voltage detection result. This application can quickly locate specific faulty relays simply by judging the presence or absence of voltage. The circuit structure is simple, resource consumption is low, it can quickly locate specific faulty relays, covers start-up, operation, and shutdown detection, and can be flexibly extended to any multi-phase system.

The present invention concerns a multiphase system comprising a power converter having at least two legs and a filtering device connected to the at least two legs of the power converter, the filtering device being composed of at least two inductors, each inductor being composed of turns wounded around a magnetic material. The magnetic material is disposed within at least one printed circuit board that comprises connections of the inductors and the filtering device further comprises a conductive material surrounding the at least two inductors, a first terminal of each inductor being respectively connected to one leg of the power converter and one terminal of the conductive material is connected to the second terminals of the inductors.

Capacitor having a first face-like electrode and a second face-like electrode opposite the first face-like electrode at a first spacing, and at least one capacitor structure having at least one dielectric arranged between the first face-like electrode and the second face-like electrode, a conductor face section adjoining the first face-like electrode, the conductor face section being bent at an edge of the first face-like electrode in the direction of the second face-like electrode and at least partially covering a first side wall of the capacitor structure, at least one first pole connection for electrically contacting the first face-like electrode, and a second pole connection for electrically contacting the second face-like electrode parallel to the first pole connection and separated by a second spacing, the first pole connection protruding outward at an end of the conductor face section facing away from the first face-like electrode, the capacitor having at least one electrically conductive shielding element fixed at the capacitor, the electrically conductive shielding element covering a second side wall of the capacitor structure perpendicular to the first face-like electrode and the second face-like electrode and to the conductor face section.

Disclosed in the present invention are an energy storage device alternating current multi-phase system and an electric quantity balance control method therefor. The electric quantity balance control method comprises: S1: obtaining remaining electric quantities of a plurality of energy storage devices; S2: calculating an average of the remaining electric quantities of the plurality of energy storage devices; S3: separately subtracting the average calculated in step S2 from the remaining electric quantity of each energy storage device to obtain a difference, and if the difference is greater than 0, increasing an output voltage of the corresponding energy storage device so as to increase output power of the energy storage device, or if the difference is less than 0, reducing the output voltage of the corresponding energy storage device so as to decrease the output power of the energy storage device. According to the energy storage device alternating current multi-phase system and the electric quantity balance control method therefor provided in the present invention, the problem of the overall endurance of the system being greatly shortened is effectively solved.

This application discloses a high-precision multi-phase CFR system and method and use. This application relates to the technical field of PAPR reduction. The CFR system is a single-stage multi-phase structure, which is used for an input signal to perform peak searching and phase recording at a high rate, and to perform peak screening, peak allocation and peak cancellation at a single rate; in the cancellation signal generation, the peak noise after the peak screening is pulse shaped and compensated for the recorded phases at the high rate by multi-phase CPG coefficients; and according to the peak allocation, multiple CPG pulse signals are combined to obtain a final cancellation signal; then a delayed original signal and the final cancellation signal are subtracted to obtain a low-PAPR signal for output.

A a multiphase system includes a power converter having at least two legs and a filtering device connected to the at least two legs of the power converter, the filtering device having at least two inductors. Each inductor includes turns wounded around a central leg of a respective EI shaped magnetic, each inductor being disposed in at least one printed circuit board that includes connections of the inductor. The filtering device further includes a conductive material having at least two parts, each part going through each aperture of a respective EI shaped magnetic material, a first terminal of each inductor being respectively connected at one leg of the power converter and one terminal of the conductive material being connected to the second terminals of the inductors.

A control system for a multi-phase power system includes a first phase line, a second phase line, and a third phase line. The control system includes a plurality of regulator controls including a first regulator control configured to control a first tap changer associated with the first phase line, a second regulator control configured to control a second tap changer associated with the second phase line, a third regulator control configured to control a third tap changer associated with the third phase line, and an electronic processor of the first regulator control, the electronic processor in communication with the second regulator control and the third regulator control. The electronic processor is configured to regulate the voltage of the multi-phase system using the first regulator control, the second regulator control, and the third regulator control based on a control algorithm of a plurality of control algorithms.