41results about How to "Reduce core size" patented technology

There is provided a processor designed to operate in a plurality of modes for processing vector and scalar instructions. Register files are each for storing scalar and vector data and address information. A parallel vector unit, coupled to the register files, includes functional units configurable to operate in a vector operation mode and a scalar operation mode. The vector unit includes an apparatus for tightly coupling the functional units to perform an operation specified by a current instruction. Under a vector operation mode, the vector unit performs, in parallel, a single vector operation on a plurality of data elements. The operations performed on the plurality of data elements are each performed by a different functional unit of the vector unit. Under a scalar operation mode, the vector unit performs a scalar operation on a data element received from the register files in a functional unit within the vector unit.

A method for producing a high density inductor includes the steps of forming a coil having a spiral shape, sealing the coil in the interior of a core member, and forming a terminal electrode for allowing electric conduction to said coil on the outside of said core member. In this method, the coil is formed by repeating a process of forming a wire layer by means of a thin film forming process and a process of forming an additional wire layer on top of the wire layer by means of the thin film forming process to pile up the wire layers. With this production method, it is possible to form a coil with a high aspect ratio. In addition, the inductor is designed in such a way that the core member envelopes only the coil. With that design, it is possible to make the inductor compact.

A method for producing a high density inductor includes the steps of forming a coil having a spiral shape, sealing the coil in the interior of a core member, and forming a terminal electrode for allowing electric conduction to said coil on the outside of said core member. In this method, the coil is formed by repeating a process of forming a wire layer by means of a thin film forming process and a process of forming an additional wire layer on top of the wire layer by means of the thin film forming process to pile up the wire layers. With this production method, it is possible to form a coil with a high aspect ratio. In addition, the inductor is designed in such a way that the core member envelopes only the coil. With that design, it is possible to make the inductor compact.

The magneto-optical recording apparatus of the present invention comprises: a magnetic head of which one end is fixed and of which the other end is free and provided with a magnetic field generating portion for applying a magnetic field onto a magneto-optical recording medium; an optical pickup, provided opposite the magnetic head with the recording medium between them, for irradiating a portion applied with a magnetic field from the magnetic head with a light beam; and a member for regulating displacement of the magnetic head in a direction parallel to a magneto-optical recording medium surface.

The present disclosure discloses a method and an apparatus for implementing the method for producing a three-phase current to a three-phase output. The method comprises producing a positive current, a negative current, and an intermediate current by using switching converters. The produced positive current follows a path of a highest phase of a sinusoidal three-phase signal at a given time, the produced negative current follows a path of a lowest phase of the three-phase signal at the given time, and the produced intermediate current follows a path of a phase of the three-phase signal between the highest and the lowest phase at the given time. The produced currents are switched to each phase conductor of the three-phase output in sequence so that phase currents of the three-phase current are formed in the output conductors.

A method of designing a memory device that has substantially reduced bitline voltage offsets is provided. The method includes providing a memory core having a depth that defines a plurality of words, and a word width that is defined by multiple pairs of a global bitline and a global complementary bitline. The method also includes designing a core cell having a bitline and a complementary bitline, and designing a flipped core cell that has a flipped bitline and a flipped complementary bitline. Further, the method includes arranging a core cell followed by a flipped core cell along each of the multiple pairs of the global bitline and the global complementary bitline. Preferably, the bitline of the core cell is coupled with the flipped complementary bitline of the flipped core cell, and the complementary bitline of the core cell is coupled to the flipped bitline of the flipped core cell.

This invention provides one magnetic double lowering semi-bridge inverter, which comprises inverter first arm, second arm, and magnetic couple induction composed of first and second couple filter induction. This invention adopts magnetic integration technique to roll magnetic parts into one common core through couple means and parameters setting to reduce parts volume and consumption.

The invention relates to a three-winding parallel single-phase induction motor. A stator winding of the single-phase induction motor adopts a three-winding parallel connection mode, so when the single-phase induction motor operates under a rated load, the single-phase induction motor has an approximately symmetrical air gap field, has the efficiency closer to that of a same-capacity three-phase induction motor and higher power factor and is small in volume and light in weight. The single-phase induction motor comprises a shell, wherein a stator is arranged inside the shell; a rotor is arranged on a rotating shaft; the stator winding is divided into three phases A, B and C which spatially form an angle of 120 degrees respectively in turn; the phase B and the phase C are respectively connected in series with a respective capacitor; and the phase A is connected in parallel with the phase C and is reversely connected in parallel with the phase B to form a composite parallel branch so as to be connected to a single-phase power supply.

Exemplary embodiments are directed to methods and systems for producing a three-phase current to a three-phase output. Switching converters are used to generate a positive current, a negative current, and an intermediate current. The system is configured such that the produced positive current follows a path of a highest phase of a sinusoidal three-phase signal at a given time, the produced negative current follows a path of a lowest phase of the three-phase signal at the given time, and the produced intermediate current follows a path of a phase of the three-phase signal between the highest and the lowest phase at the given time. The produced currents are switched to each phase conductor of the three-phase output in sequence so that phase currents of the three-phase current are formed in the output conductors.

A micro-structured optical fiber precursor 1 is made by size reducing a multiple core optical fiber having solid multiple cores or a multiple core optical fiber preform O having multiple solid core preforms C. A fiber fuse is induced in at least one of the cores 2 of the precursor 1. The effect of the fiber fuse is to consume the core 2 along the whole length of the fiber or to consume periodically spaced lengths of core 2 along the whole length of the fiber.

The invention discloses a method for improving the inductance coefficient of an air gap magnetic core. The air gap magnetic core is formed by combining more than two magnetic cores. The combined surface which magnetic flow passes comprises lateral surfaces, the mirror surface process is adopted for the lateral surfaces, and accordingly the inductance coefficient of the whole magnetic core can reach above 80%. Well wound windings are arranged on the magnetic core in an interdigitation mode and then are baked at a high temperature or are electrified on two magnetic cores for fusion, and accordingly the inductance coefficient of the magnetic core can be further improved. After adopting the method, the volume of a transformer or an inductor which is made of the magnetic core is small, and the winding process of the transformer or the inductor is simple.

A coil apparatus having a divided winding conformation and a manufacturing method of the coil apparatus which can prevent a winding from collapsing while achieving a reduction in size of a core and simplification of a structure. A coil apparatus includes a ferrite core and a coil provided around the core. The coil includes at least a first coil portion and a second coil portion, and a boundary end surface of the first coil portion on the second coil portion side is inclined in such a manner that its inner peripheral side is closer to the second coil portion than its outer peripheral side. Further, a boundary end surface of the second coil portion on the first coil portion side is inclined in such a manner that its outer peripheral side is closer to the first coil portion than its inner peripheral side.

The application provides a high-voltage pancake winding of a transformer; the winding comprises a low-voltage coil 1, an insulating barrel 2, comb type supporting strips 3, filler strips 4 and high-voltage coils 5, the distance between the low-voltage coil 1 and the insulating barrel 2 is a, the insulating barrel 2 and the comb type supporting strips 3 are fixed, the high-voltage coils 5 are arranged on comb teeth of the comb type supporting strips 3, and one comb tooth is provided with a cake 51 of one high-voltage coil 5; multiple wire cakes 51 of the high-voltage coil 5 are arranged, the wire cakes 51 are connected in series to form the high-voltage coils 5, the distance between the high-voltage coil 5 and the insulating barrel 2 is b, filler strips 4 are added into the head wire cakes 51 and the tail wire cakes 51 of the high-voltage coils 5, andin a direction from the head end wire cake 51 to the middle wire cake 51 and a direction from the tail end wire cake 51 to the middle wire cake 51, the thicknesses of the added filler strips 4 are gradually reduced, so that the distance a between the low-voltage coil 1 and the insulating barrel 2 and the distance b between the high-voltage coil 5 and the insulating barrel 2 can be reduced, the size of an iron core of the transformer is reduced, and the no-load loss is reduced.

The invention provides a DC circuit breaker energy supply system and a control method and device thereof. The energy supply system comprises a resonant capacitor of which the input end is connected with a low-frequency AC voltage source through a rectification circuit and the output end is connected with a resonant inductor through a switching circuit, wherein the resonant capacitor and the resonant inductor generate resonant current when the switching circuit is conducted and low-frequency alternating current is converted into high-frequency alternating current to be outputted; and an energytaking magnet ring which sleeves on an energy supply cable with the output end connected with a load for converting the high-frequency alternating current into the voltage meeting the load requirements to supply power to the load. Compared with the low-frequency energy supply mode, the low-frequency alternating current is converted into high-frequency alternating current to be outputted so that the size of the energy taking magnet ring can be reduced under the condition of meeting the same power supply requirement and then the size of the high voltage DC circuit breaker system and the cost ofthe system can be reduced.

The invention discloses a bridgeless double Boost power factor correction rectifier with left and right alternate auxiliary commutation, which can realize ZVS conduction of a main circuit switch and an auxiliary circuit switch. The fully controlled switch replaces the rectifier diode of the basic bridgeless circuit, and the main circuit has two charging states. The alternately working auxiliary circuit realizes the bidirectional reset of the excitation current, thus reducing the volume of the transformer magnetic core. The secondary winding coupling of the transformer reduces the voltage stress of the auxiliary commutation diode.

The invention discloses a bridgeless double Boost power factor correcting rectifier with alternating up and down auxiliary commutation, which can realize ZVS conduction of a main circuit switch and an auxiliary circuit switch. The fully controlled switch replaces the rectifier diode of the basic bridgeless circuit, and the main circuit has two charging states. The alternately working auxiliary circuit realizes the bidirectional reset of the excitation current, thus reducing the volume of the transformer magnetic core. The secondary winding coupling of the transformer reduces the voltage stress of the auxiliary commutation diode.

A pulse width modulator (PWM) of a multi-phase power converter is provided. The PWM includes a signal modulator that corresponds to each phase of the converter. Each signal modulator of the PWM is configured to receive a unique triangle carrier signal, receive a unique sine wave signal, compare the received triangle carrier signal and the received sine wave signal, and output at least one control signal based on a result of the comparison. The control signal controls an inverter that applies pulse width modulation to a DC power for converting the DC power to a multi-phase power, AC harmonics of the multi-phase power filtered by a common mode inductor.

The present disclosure relates to an N-phase power converter, an inductance element, and an inductance cut-off control method, wherein the converter has N phases with parallel inputs and parallel outputs, and the converter includes: N switching units, wherein the N Each phase of the phase power converter includes one of the N switching units; and an integrated inductance unit, the integrated inductance unit includes M inductance subunits, M is a natural number greater than or equal to 2, and each inductance subunit includes i inductances, i is a natural number greater than or equal to 2, and N>M*i or N=M*i, the M*i inductances in the integrated inductance unit are respectively coupled to the inductances in the N switch units M*i switch units, wherein: the i inductances of each inductance subunit are inversely coupled to each other, and the coupling coefficient between the M inductance subunits is smaller than the i in each of the inductance subunits The coupling coefficient between the inductors.