18 results about "Coupling transformer" patented technology

Various embodiments disclose a cross-inductor voltage regulator comprising a first switching circuit configuration pair, the first switching circuit configuration pair comprising a first set of switching circuits, a first compensating coupled inductor coupled to the first set of switching circuits, a second set of switching circuits, and a second compensating coupled inductor coupled to the second set of switching circuits, wherein the first compensating coupled inductor comprises a first winding of a compensating coupled transformer and the second compensating coupled inductor is a second winding of the compensating coupled transformer.

The application provides an Ethernet-based linear series monitoring system and related equipment, the linear series monitoring system comprising a host device and a plurality of slave devices, a main power supply tap being led out from a secondary coil of each first coupling transformer, and an output end of a first power supply unit being connected with each main power supply tap; a primary tap being led out from a primary coil of each second coupling transformer, and a secondary tap being led out from a secondary coil of each third coupling transformer, a primary tap of an nth second coupling transformer in the same slave device being connected with a secondary tap of an nth third coupling transformer; and the primary taps of the N second coupling transformers in the same slave device all being connected with an input end of a rectifier unit. After the first power supply unit starts to supply power, parallel power supply is performed through 2N wires, so that the equivalent comprehensive line resistance is reduced, the voltage drop and loss are reduced, and the stability of line power supply is improved.

This application belongs to the field of wireless charging technology, specifically relating to a constant current and constant voltage wireless charging system and method based on a three-coil loosely coupled transformer, including an inverter circuit, a primary-side compensation circuit, a resonant circuit, a secondary-side compensation circuit, a rectifier circuit, and a filter capacitor; the resonant circuit has an anti-parallel coil structure, with the third coil located on the secondary side and a single coil on the primary side; its advantages are high misalignment tolerance, load-independent output, and high efficiency.

This utility model discloses an industrial and commercial energy storage system based on PLC communication, including a power supply module. At least one PLC master node module and multiple PLC slave node modules are connected to the power supply module. The PLC master node module is connected to an EMS system via UART and GPIO, with the GPIO serving as an emergency response port. Multiple functional modules are connected to each of the multiple PLC slave node modules. A coupling transformer is installed between the PLC master node module and the multiple PLC slave modules and the power line to establish a communication channel. By utilizing existing power cables as the communication medium, this completely changes the traditional "one module, one cabling" model of energy storage systems, drastically reducing the number of communication cables within industrial and commercial energy storage equipment and significantly shortening cabling time.

First and second converters comprise an input and a switching bridge comprising a pair of switches coupled in series via a common node and coupled in parallel with the input. The second converter is coupled in series with the first converter via a common converter node. A transformer comprises a first balance winding coupled in series with a first primary winding via a first current flow path and a second balance winding coupled in series with a second primary winding via a first current flow path. The first current flow path is coupled in series with the first common node, and the second current flow path is coupled in series with the second common node.

This invention discloses a nested TLVR multiphase voltage regulator and its control method to solve the problems of large size of coupling transformers, high AC magnetic flux density and core loss, long interconnection lines of coupling windings, complex interconnection of coupling windings, and high conduction loss of interconnection circuits in existing TLVR multiphase voltage regulators. Through the nested TLVR structure, this invention allows the coupling transformer to be interconnected only with adjacent or nearby coupling transformers, reducing the complexity of coupling transformer winding interconnection, the length of interconnection circuits, and losses. This invention can also effectively reduce the inductance of the coupling transformer itself, reduce the peak AC magnetic flux and core loss of the coupling transformer core, thereby effectively reducing the size and losses of the coupling transformer. This invention provides a simpler, easier-to-implement, more efficient, and higher power density solution for multiphase voltage regulators supplying power to various computing processor chips.

This invention discloses a broadband multi-coupled millimeter-wave band low-noise amplifier, comprising an input matching network, an inter-stage matching network, an output matching network, and two-stage amplifier transistors. The two-stage amplifier transistors include a common-source amplifier transistor located on the signal input side and a common-gate amplifier transistor located on the signal output side. The input terminal of the common-source amplifier transistor is connected to the output terminal of the input matching network. The inter-stage matching network connects the output terminal of the common-source amplifier transistor to the input terminal of the common-gate amplifier transistor. The output terminal of the common-gate amplifier transistor is connected to the input terminal of the output matching network. This invention achieves area reuse of the source and gate inductors based on a three-coupling transformer matching network, significantly reducing the chip area and possessing significant practical value.

The present application relates to the technical field of flexible straight back-to-back converter station flow, and particularly relates to a converter station arrangement structure, the converter station comprising start-up loop framework columns, coupling transformers and alternating current field framework columns arranged in sequence and at intervals from left to right, a first grid-side incoming line electrically connected with the alternating current grid being arranged between the alternating current field framework columns and the start-up loop framework columns; a hanging line mechanism being arranged between the start-up loop framework columns and the alternating current field framework columns, a second grid-side incoming line electrically connected with the first grid-side incoming line being arranged between the start-up loop framework columns and the hanging line mechanism, the second grid-side incoming line being located below the first grid-side incoming line; the second grid-side incoming line being connected with a fourth grid-side incoming line, the fourth grid-side incoming line extending downward and being connected with a grid-side bushing; so that the connection point of the grid-side bushing and the fourth grid-side incoming line is subjected to smaller tension.

The application relates to a large-current impact protection circuit of an online ground net corrosion monitoring device, and belongs to the technical field of ground net corrosion monitoring. The protection circuit is connected in series between a ground net conductor and a corrosion monitoring sensor, and comprises a four-stage cooperative protection circuit, a self-recovery protection unit and a control and detection unit. The four-stage cooperative protection circuit is sequentially composed of a gas discharge tube, a metal oxide varistor, a transient voltage suppression diode and a signal isolation unit composed of a direct-current isolation capacitor and a magnetic coupling transformer according to a signal flow direction, and is used for discharging and clamping large-current impacts in stages; the self-recovery protection unit comprises a PPTC self-recovery fuse and a magnetic latching relay connected in series. The application has the advantages that the device can withstand 100kA short-circuit current and 40kA lightning current impact without being damaged, can automatically recover the monitoring function after the impact, and is suitable for online ground net corrosion monitoring in a strong electromagnetic environment such as a transformer substation and a wind power plant.

This invention discloses a dual-core magnetically coupled harmonic shaping millimeter-wave voltage-controlled oscillator (VCO), comprising a three-turn magnetically coupled transformer and a negative resistance circuit. The three-turn magnetically coupled transformer includes three inductors, and the negative resistance circuit includes two pairs of complementary PMOS and NMOS transistors. The gates of the two identical PMOS transistors are interconnected, and the gates of the two identical NMOS transistors are interconnected. The drains and gates of each pair of complementary PMOS and NMOS transistors are connected via an inductor. The two ends of the three inductors are respectively connected to a capacitor array-varactor circuit. The two ends of the inductors connected to the gates of the complementary PMOS and NMOS transistors are connected to an output buffer. The sources of each pair of complementary PMOS and NMOS transistors are connected to VDD and GND, respectively. This invention effectively suppresses parasitic coupling effects, improves harmonic shaping, and optimizes the phase noise performance of the VCO.

The application discloses a hybrid integrated radio frequency power amplifier, which comprises a signal input end, a driving amplifier, a power amplifier, an output balun and a signal output end which are sequentially connected; the driving amplifier comprises a first-stage amplifier, an inter-stage balun, a second-stage amplifier and a power combining network which are sequentially connected; the power combining network comprises a self-coupling transformer with four input ends and two output ends; the hybrid integrated radio frequency power amplifier can improve the output power, the output efficiency and the linearity of the driving amplifier, reduce the area of the power combining network on the chip and the insertion loss, and reduce the cost of the hybrid integrated radio frequency power amplifier.

This invention belongs to the field of microelectronics technology and discloses a high-precision eight-phase voltage-controlled oscillator based on a transformer superharmonic coupling network. The oscillator includes four voltage-controlled oscillator units and a superharmonic coupling network, with each unit outputting a pair of differential oscillation signals. The superharmonic coupling network consists of two stage I coupling transformers and one stage II coupling transformer. The stage I coupling transformers are connected to the second harmonic output terminals of the first and second groups of voltage-controlled oscillator units, respectively, creating a 90° phase difference between the corresponding fundamental signals. The stage II coupling transformer is connected to the fourth harmonic coupling terminal of the stage I coupling transformer, creating a 90° phase difference between the second harmonic signals of the four units, thus ensuring that the eight fundamental output signals are sequentially 45° out of phase. This invention achieves high-precision eight-phase output by precisely controlling the fourth harmonic phase to regulate the second harmonic phase of each unit, while not interfering with the fundamental oscillation. It has advantages such as symmetrical structure, small phase error, and consistent output amplitude.

This invention discloses an on-chip compact dual-core dual-path quality factor enhancement source degradation fully differential low-noise amplifier, comprising four MOS transistors, gate-source capacitors, DC blocking capacitors, bias resistors, and inductors. Four source half-turn inductors form a first transformer, and two gate-end inductors coupled together form a second transformer, which is nested within the first transformer. The first and second transformers constitute a multiplexed four-turn coupled transformer, simultaneously achieving source degradation imaginary and real part matching within the same transformer area. In differential operation, the currents in both signal paths enhance the magnetic flux, improving the effective inductance and quality factor of the inductors. This achieves on-chip integration of gate-end inductors in the Sub-6GHz band, optimizing noise, gain, and area efficiency.

An onshore wind power transmission system, used for solving the problems in the related art of AC integration and transmission such as harmonic resonance and reactive power transmission. The onshore wind power transmission system uses a bipolar topology structure, and each pole comprises a wind power sending-end unit and a wind power receiving-end unit. The wind power sending-end unit comprises a DC transformer and two or more wind turbines. A machine-side converter is arranged inside each wind turbine and each wind turbine corresponds to a low-voltage circuit breaker. The DC transformer is provided with a sending-end DC circuit breaker. For each wind turbine, electric energy generated thereby is rectified by the machine-side converter into first DC power, the first DC power is connected in parallel to the DC transformer via the low-voltage circuit breaker and is boosted into second DC power, and the second DC power is transmitted into the wind power receiving-end unit via the sending-end DC circuit breaker of the DC transformer. The wind power receiving-end unit comprises a receiving-end converter station, a coupling transformer, and a startup circuit. The second DC power is, after being converted by the receiving-end converter station, connected to an AC grid via the coupling transformer and the startup circuit.

Provided are a radio frequency power amplifier and a radio frequency chip. An input end of an input matching circuit (1) is used for receiving a radio frequency signal; an output end of the input matching circuit (1) is connected to an input end of a power amplifier (3); a first end of a filter circuit (4) is connected to an external power supply voltage; an output end of the power amplifier (3) is separately connected to a second end of the filter circuit (4), a first end of a notch filter circuit (5), and an input end of a strongly coupled transformer (6); a second end of the notch filter circuit (5) is grounded; an output end of the strongly coupled transformer (6) is used for outputting the radio frequency signal; a first end of a high-order notch filter circuit (7) is connected to the output end of the strongly coupled transformer (6); and a second end of the high-order notch filter circuit (7) is grounded. The present utility model reduces the radio frequency matching area, and saves the space and cost of the radio frequency power amplifier. In addition, by means of the structural design of the strongly coupled transformer, the efficiency and performance of the radio frequency power amplifier are improved.

The application discloses a differential derivative structure circuit and an amplifier based on three-coupling voltage transformation, and relates to the technical field of amplifier circuit design.The differential derivative structure circuit comprises a three-coupling inductive network and N output parts.The main amplifier tube and the auxiliary amplifier tube in the differential derivative structure composed of MOS tubes in parallel are integrated into the inductive matching network in the mode of three-coupling voltage transformation, not only realizing the homologous coupling of the main amplifier tube and the auxiliary amplifier tube on the radio frequency signal path, but also realizing the physical isolation and independent bias control on the direct current path, so that the use of resistance is not needed, the overuse of capacitance is avoided, the loss caused by the impedance of the capacitance itself and the loss of the parasitic capacitance to the ground are reduced, the gain is greatly improved, the additional area occupied by the capacitance and resistance is effectively inhibited, and the thermal noise introduced by the resistance is eliminated by the low-impedance characteristic of inductive coupling, so that the noise of the latter stage is effectively inhibited, and the noise coefficient is reduced.

This invention relates to the field of power line carrier communication technology, specifically to a control method, processor, control device, and storage medium for power lines. The method includes: connecting phases A, B, and C of a power line to the same coupler and setting them to share a common N terminal, forming a three-phase coupling transformer; setting the number of turns of the primary and secondary coils of the three-phase coupling transformer to be equal; and setting the coupling inductance power of the weak current side analog-to-digital converter terminal, the weak current side digital-to-analog converter terminal, and the strong current side phases A, B, and C of the three-phase coupling transformer to be equal. The three parallel communication signals ensure that an interruption in any one channel does not affect the signals of the others, i.e., a phase loss does not cause communication interruption, thus improving the quality of three-phase communication. Phases A, B, and C are synchronized when transmitting and receiving signals, achieving multiple-input multiple-output (MIMO) and enhanced signal strength. The transmit and receive power of the coupler are both increased, improving channel quality and enhancing communication success rate and reliability.