73results about How to "Reduce the number of windings" patented technology

The machine in accordance with the present disclosure is an AC machine whose pole numbers can be switched (from pole p1 to pole p2), and whose number of series turns per phase N can be switched say from N0=Nrated to N1=N0 / 2. Furthermore, it employs an inverter so that the frequency can be changed from a low value (e.g., 5 Hz) to a high value (e.g., 200 Hz). Due to the combination of pole number and number of series turns switching / reconfiguration, a high torque at low speed (e.g., 0 rpm) and a high torque at high speed (e.g., 5,000 rpm) can be achieved, making mechanical gears obsolete. In addition, the output power of the motor can be increased at high speed in direct proportion to the speed increase.

The present invention provides a power transmission transformer of which workability in implementing and reliability of connection are considered in a noncontact power transfer device using individual self-oscillation circuits. The power transmission transformer for a noncontact power transfer device including a transmitting coil L1 and a drive coil L2 for self-oscillation on a power transmission device side includes a bobbin in which the transmitting coil and the drive coil L2 are disposed, in which the transmitting coil and the drive coil L2 are configured by an air-core coil using self-bonding wire, and the bobbin 1 includes a winder spindle 1a, 1b on both surfaces opposed to each other across a collar 2 formed of a flat plate, and a mating portion 3 for mating with an external portion in an end portion of the winder spindle 1b, and the drive coil L2 is mounted on the winder spindle 1b and the transmitting coil L1 is mounted on the other, opposed winder spindle 1a across the collar.

The invention discloses a multiple input flyback converter belongs to direct current converter field in electrical energy changer. The converter structure includes N input channel circuits, flyback converter circuits and output rectifier circuits, N is a natural number bigger than one, wherein N input channel circuits are concatenated by fly-wheel diodes, same terminal and differet terminal of primary winding in flyback converter circuit are respectively connected with cathode of fly-wheel diode in the first input channel circuit and drain of flyback switch tube in flyback converter circuit, source electrode of the flyback switch tube is connected with anode of fly-wheel diodes in the Nth input channel circuit, a vice-side winding is connected with the output rectifier circuit. As long as there is a continuity signal in switch tube of the input channel, theb switch tube of the flyback converter has a drive signal, when all the switch tubes in input channel circuit are continued at the same time, all the input power supply electric power to the load at the same time is implemented, input side of the converter has only one winding that can reduce size of the converter in multi-channel input situation.

An electrode assembly for a secondary battery, a method of manufacturing the electrode assembly and a secondary battery having the electrode assembly. The electrode assembly includes a plurality of electrode members arranged in a stacked shape along a baseline extending in one direction and a separation unit separating two adjacent electrode members. The separation unit includes three or more separators having a same winding center.

The invention provides a touch panel. The touch panel comprises a substrate, a first electrode unit, a second electrode unit and an auxiliary electrode unit, wherein the first electrode unit comprises multiple first electrodes, the second electrode unit comprises multiple first sensing electrodes and multiple second sensing electrodes, the auxiliary electrode unit comprises a first auxiliary electrode and a second auxiliary electrode, the first auxiliary electrode complies with and is not in touch with the first sensing electrodes and is arranged on the substrate, the second auxiliary electrode complies with and is not in touch with the second sensing electrodes and is arranged on the substrate, and the first sensing electrodes and the second sensing electrodes are respectively used for detecting signals of the first auxiliary electrode and the second auxiliary electrode. The touch panel provided by the invention has the effects of reducing output pin positions and reducing the area and the cost of a follow-up control circuit. The invention also provides a touch device and a touch point detection method.

A lid body for a pressure cooker includes a pot lid, an inner lid mounted at an outer side of the pot lid, a top lid mounted at an outer side of the inner lid, and a solenoid exhaust valve. The pot lid includes a mounting cavity and a limiting rib protruding inward from a side wall of the mounting cavity. The solenoid exhaust valve includes a valve seat mounted in the mounting cavity and including a mounting hole, a valve core inserted in the mounting hole, and a valve cover matingly connected with a top of the valve core and being movable with respect to the valve core. A bottom end of the valve seat abuts against an upper end face of the limiting rib, and a lower end face of the limiting rib abuts against the pot lid or the inner lid.

An armature for a brush commutated electric motor having a distributed coil winding arrangement for reducing brush arcing and electromagnetic interference (EMI). The winding pattern involves winding a first coil into a first pair of slots of the armature. A second coil having a first subcoil portion is then wound into the same slots as the first coil, while a second subcoil portion of the second coil is wound into a pair of slots that is offset by one slot position from the first pair of slots. The two subcoil portions have the same number of turns, and the total turns of the two subcoil portions equals the number of turns of the first coil. A third coil is then wound in the same slots as the second subcoil portion of the second coil. The third coil has the same number of turns as the first coil. This pattern is repeated around the armature. In a two coil per slot armature, this pattern enables the magnetic axis of each coil to be maintained at a constant angular position relative to the commutator bars to which it is coupled without the need for using uneven numbers of turns for the two subcoil portions of each segmented coil.

The present invention is a kind of electrified railway power quality conditioner, comprises single-phase multi-winding transformer, single-phase single-winding transformer, converter (I, II) and electric capacity; One end of the converter I is connected in series, the other end of the converter I is connected in parallel with the capacitor and then connected back to back with the converter II, and the converters II are connected in a chain structure and then connected in series with the single-phase single-winding primary winding. The present invention adopts a single-phase transformer and a chain structure, which can reduce switching loss, improve device operation efficiency and reliability, reduce the number of device links, reduce the complexity of device structure, improve control accuracy, and reduce the pulse output to the control system Synchronization requirements. The invention solves the problems of negative sequence, reactive power and harmonic exceeding standard in the traction station of the electric railway, and has the advantages of small occupied area of ​​the device, small loss, simple control, low cost and high reliability.

The invention discloses a hybrid excitation rotor permanent magnet vernier motor, and belongs to the field of motors. A rotor is sleeved with a stator, and an air gap is formed between the rotor and the stator. The stator comprises a stator iron core and a stator winding, the stator iron core comprises a stator yoke part, first modulation teeth and second modulation teeth, the end parts of the first modulation teeth are two split teeth, and the first modulation teeth and the second modulation teeth are connected with the stator yoke part and are alternately distributed on the circumference ofan upper iron core; the second modulation teeth and the split teeth are the same in width; all phases of windings of the stator winding are connected in a single-tooth concentrated winding manner andare wound on the split teeth at equal intervals; and direct-current bias current is introduced into the stator winding. According to motor topology, the space of an inner cavity of the rotor is fullyutilized, the excitation effect of an excitation magnetic field and direct current is enhanced, and the torque density is greatly improved; direct-current bias current is adopted to flexibly adjust distribution of magnetic loads and electric loads, and the power factor of the motor can be well improved.

The invention discloses a single-primary winding voltage source type multi-input full-bridge converter, belonging to the field of power electronic converters. The converter consists of N input channel circuits, a full-bridge converter circuit (20) and an output rectifying circuit (30), wherein N is a natural number greater than 1; each input channel circuit consists of an input source, a switch tube and a fly-wheel diode; the N input channel circuits are connected in series by the fly-wheel diode; the full-bridge converter circuit (20) consists of four full-bridge switch tubes and a transformer; and the output rectifying circuit (30) consists of a full-bridge rectifying circuit, a filtering inductor and a filtering capacitor. The primary edge of the transformer of the converter is only provided with a winding, the number of the switch tubes can be 4+N, and the volume of the converter is small and the structure is simple; when the switch tubes in the input channels are switched on simultaneously, the input source is connected in series to the load for supplying electricity so as to realize that the multiple input sources supply electricity simultaneously or at the different time.

The invention discloses an anti-sway device for a crane, a control method of the anti-sway device, and the crane. The anti-sway device comprises a trolley frame, a lifting appliance and an anti-sway device body; the anti-sway device body comprises a drum, a motor, a first translation device, a second translation device, a first movable pulley, a second movable pulley, a fixed pulley, a first anti-sway steel wire rope and a second anti-sway steel wire rope, wherein the first translation device and the second translation device are arranged on the two sides of the drum and can relatively move, the first movable pulley and the second movable pulley are fixed to the two translation devices correspondingly, and the fixed pulley is mounted on the lifting appliance; the two anti-sway steel wire ropes are wound around the drum, extend out from the two opposite sides of the drum to sequentially bypass the movable pulleys and the fixed pulley and then are fixed to the trolley frame; and an anti-sway controller controls the first translation device and the second translation device to move face to face or back to back so as to adjust the distance between the first translation device and the second translation device. If torsion occurs in the operation process of the lifting appliance, by adjusting the translation devices in the anti-sway device in the torsion direction, the horizontal component of the anti-sway steel wire ropes in the torsion direction is changed, and the active anti-sway effect of the lifting appliance is achieved based on the horizontal component.

A co-axial magnet configuration for the production of a magnetic field and investigational volume which is suitable for measurement of magnetic resonance has at least one superconducting solenoid coil or solenoid coils which are radially nested within each other, wherein the windings of the solenoid coil(s) in a radial region about the axis of the magnetic configuration are disposed between r1 and r2, wherein r1<r2 is characterized in that the windings are surrounded by at least one rotationally symmetric magnet body made from ferromagnetic material which extends over a radial region between r3 and r4 wherein r3<r4 wherein r2<r3<1.3 r2 and r4>1.3 r3, wherein the rotationally symmetric magnet body or bodies are structured, dimensioned and positioned in such a fashion that the magnetic field is homogenized in the investigational volume and the magnetic fringe field outside the magnet configuration is essentially suppressed to permit the production of strong magnetic fields of high homogeneity without requiring notches in the coil configuration.

A display apparatus with a touch detection function capable of improving accuracy is provided. The display apparatus includes: a pixel array having a plurality of pixels arranged in a matrix form; and a plurality of signal wires arranged in the pixel array. Here, when an externally-detecting object is detected, a plurality of coils having areas overlapping with each other are formed of a plurality of signal wires (drive electrodes) among the plurality of signal wires, and a magnetic field generated in the plurality of respective coils are superimposed in an overlapped area by supplying a drive signal to the plurality of coils.