40results about How to "Improve excitation performance" patented technology

The invention aims to provide a novel coil rack for an electromagnetic switch. The coil rack comprises a first baffle plate, a second baffle plate, a coil drum and two half-moon-shaped baffle plates. The coil winding mode in the prior art can be changed by utilizing the coil rack, and the excitation capability of coils can be improved.

The invention discloses a bistable permanent-magnet operating mechanism dispersedly exciting on two sides of brake opening and closing working air gaps, which is suitable to be used for driving a contact terminal to move in single-phase, multi-phase high-voltage, intermediate-voltage and low-voltage switches and is characterized in that a main brake closing coil and an auxiliary brake opening coil are arranged on one side of a brake closing working air gap, and a main brake opening coil and an auxiliary brake closing coil are arranged on one side of a brake opening working air gap, wherein the main brake closing coil and the auxiliary brake closing coil are connected in series; and the main brake opening coil and the auxiliary brake opening coil are connected in series. The invention has favorable excitation effect; a moving iron core can obtain enough operation power in a whole movement process; the contact time and the movement time are reduced, the peak current of an exciting coil is reduced, the energy consumption of an energy storage capacitor is decreased, and the mechanical properties are well matched with brake opening properties and brake closing properties of the contactterminal.

The invention relates to a direct-boosting doubly-fed switched reluctance generator current transformation system, which is composed of a storage battery, ten switch tubes, a three-phase winding, ninediodes, eight capacitors and two inductors, and is characterized in that the total output voltage is boosted directly under the condition of parallel connection of each phase output while the excitation and power generation of each phase winding, the problems of strengthened excitation and simultaneous work of two phase windings are solved at the same time, the switch tubes are not additionally increased, and the separated excitation storage battery can be automatically charged. Meanwhile, an automatic charging current transformation loop is utilized and can carry out backward feedback energyfeed after only fine adjustment, so that the cost performance and the adaptability are greatly improved, and the whole system is low in switching loss and high in output electric energy. The direct-boosting doubly-fed switched reluctance generator current transformation system is applicable to the field of low-power high-speed switched reluctance generator systems with various power inputs.

The switched reluctance generator converter system with direct step-up transformer, voltage change and excitation without isolation is composed of nine diodes, nine switch tubes, three-phase windings, four capacitors, and three inductors. The excitation and power generation of each phase winding At the same time, the power generation voltage value is naturally increased, and the continuously changing power generation voltage can be further obtained through the fifth switching tube (the first phase winding, the other corresponding), and the ninth switching tube, the only switching tube, can be obtained without the isolation link. The excitation voltage can be continuously changed, and directly participates in the output of power generation. At the same time, the battery is discarded, and the excitation design is strengthened. It has an impact, and the controllability is further enhanced. With simple structure and control, the flexibility and adaptability of the system are greatly improved; it is suitable for various low-power compact high-speed switched reluctance generator system applications.

The invention relates to a high-speed direct current switch reluctance generator converter system. The system comprises four-phase windings, six switch tubes, seven diodes, five capacitors, an inductor and an isolation converter. Converter loops of the first phase winding and the second phase winding have simple structures and the same control modes, and a third phase winding and a fourth phase winding are asymmetrically integrated conversion structures. By depending on the relatively complex converter loops and the regulation and control of the fourth phase winding, the measure of enhancementof the power generation capacity of the fourth phase winding itself can be achieve such as a follow current stage, and the fourth phase winding can be mutually promoted with the third phase winding to indirectly improve the power generation capacity of the first phase winding and the second phase winding; and besides, the structure is high in expandability, the output end is connected in series to increase the voltage, the total excitation source of each phase winding is regulated according to the duty ratio of a sixth switch tube so that the high-speed direct current switch reluctance generator converter system is a set of high-performance conversion system, is especially suitable for the high-speed direct current switch reluctance generator application field, and can be taken as one ofthe generator in the internal direct current microgrid in a full-electric aircraft.

Disclosed is a high-voltage current conversion system of a switch reluctance wind power generator. A switch reluctance generator is used as a main wind power generator, and the output electric energyof a permanent magnet direct current generator coaxially connected with the switch reluctance generator is used as exciting electric energy of the switch reluctance generator; each phase of winding ofthe switch reluctance generator comprises two branches which are connected in parallel in excitation while in series in power generation, thereby strengthening the excitation effect; in power generation, the direct current power supply needed by excitation and a charged capacitor in excitation are both connected with the corresponding phase winding to be participated in power generation output, thereby highly improving the output voltage; and the whole current conversion system is high in expandability, high in reliability, simple in structure, easy to control, low in loss and suitable for medium-low-power wind power and medium-high-voltage direct current grid connection or direct current load power utilization fields.

A two-phase electric excitation doubly salient pole electric sunroof driving motor is characterized in that it consists of a stator core (1), a mover (2), an excitation isolation block (3), an excitation winding (4), a guide rail (7) and an armature winding composition; the stator core (1) has a row of stator poles protruding in the direction of the y-axis; the elongated mover is located above the stator core (1), and the mover (2) has a row of protruding poles in the direction of the negative y-axis There is a field winding (4) between every two stator poles, the field winding (4) is wound around the x-axis direction where the length of the stator core (1) is located, and the adjacent field winding (4) is wound In the opposite direction; the armature winding is wound around the stator pole, and the A-phase armature winding and the B-phase armature winding are arranged at intervals; the mover (2) is connected to the sunroof, and the stator core (1) is connected to the vehicle body, when the mover ( 2) The sunroof can be opened or closed while moving. The technology of the present application does not have a worm gear reduction mechanism, and is light in weight, thin in thickness and high in transmission efficiency.

The invention discloses a superconductive controllable reactor, which comprises a first segmented magnetic yoke, a second segmented magnetic yoke, a working coil, a superconductive excitation coil group and a low-temperature dewar, wherein the first segmented magnetic yoke is an iron core; the second segmented magnetic yoke comprises an excitation iron core group and two same cambered iron cores; the excitation iron core group consists of a plurality of excitation iron cores which are distributed and clamped in the two cambered iron cores of the second segmented magnetic yoke at equal radians; each excitation iron core is sleeved on each superconductive excitation coil; the inductance values of the superconductive excitation coils are the same, and the superconductive excitation coil group is formed by connecting the superconductive excitation coils in series; the two adjacent superconductive excitation coils are sequentially connected with one another according to homonymy terminals and synonym terminals; the number of the superconductive excitation coils and the number of the excitation iron cores are the same and even; and the superconductive excitation coils and the excitation iron cores are arranged in the non-magnetic low-temperature dewar. The superconductive controllable reactor can continuously and adjustably compensate the reactive power of a power grid in a large scale, so that reactive power balance is realized, the stability of a power transmission system is improved, the power transmission capacity is improved, and system overvoltage is suppressed.

A direct-boost self-varying excitation switched reluctance generator converter system, consisting of nine switch tubes, three-phase windings, seven capacitors, twelve diodes, two transformers, and two inductors, using the least number of switch tubes , which solves the problem of achieving different high voltage outputs under certain conditions while the windings of each phase of the switched reluctance generator are excited and generating power. The current is cut off automatically at the end of the power generation, with high efficiency and high device utilization. Under the variable excitation voltage structure, the excitation voltage can be continuously adjusted and the output of different excitation voltage ranges can be realized under certain conditions. The second transformer plays a comprehensive role of isolation, voltage transformation, and protection of the stability of the excitation power. The current at the input end of the variable excitation circuit is continuous. , less interference to the output end of the power generation, taking into account the enhanced excitation function, the whole system has high utilization rate, high reliability, low loss, low cost, and strong flexibility and adaptability: it is suitable for high-speed switched reluctance generator systems driven by various powers field application.