34results about How to "Small distribution parameter" patented technology

The invention relates to a high-power self-cooled thyristor valve and a vehicle for assembling the same. The invention is characterized in that: a single-phase thyristor valve body comprises two thyristor valve string, and insulating tension rods, flanges, radiating fins, high-potential trigger plates, energy-taking magnetic rings, high-voltage energy-transmitting cables and a plurality of retaining nuts which are symmetrically distributed; every two thyristors are in positive and negative parallel connection with each other through flexible cables on the radiating fins to form a thyristor valve unit; a plurality of thyristor valve units form a thyristor valve string through parallel connection and upright stacking; radiating fins are pressed between each layer of thyristor valve units at intervals; the two thyristor valve strings form a single-phase thyristor valve through positive and negative parallel connection; both ends of the insulating tension rods are respectively fastened between an upper flange and a lower flange through the retaining nuts; the high-voltage energy-transmitting cables are connected to the inside of the thyristor valve body through the energy-taking magnetic rings of the high-potential trigger plates; the single-phase thyristor valve body inputs and outputs current through two moving contacts; the two moving contacts and the thyristor valve body are fixed together through copper bars which are fixed on the upper end and the lower end of the insulating tension rods through the flanges; and annealed copper sheets which are communicated with the radiating fins are arranged on the copper bars.

An insulation ageing test device of frequency conversion high voltage pulse equipment is prepared as connecting output end of pulse generator to primary edge of high voltage boosting transformer with its secondary edge being connected to wire in insulation sleeve, applying 300H2 to lkH2, 1kH2 to 5kH2 , 5kH2 to 10k H2 and 10k H2 to 20k H2 as operation frequency of high voltage boosting transformer alternately, connecting said boosting transformer to output of pulse generator for outputting square wave to meet requirements of insulation ageing test.

The invention discloses a small and efficient high-power solid-state modulator and belongs to the technical field of pulse power. The modulator comprises a solid-state modulator component and a pulse transformer (T), wherein the solid-state modulator component comprises a direct-current power supply (E1), an energy storage capacitor (C1) and a solid-state switch (V1). The direct-current power supply (E1) is used for charging the energy storage capacitor (C1). Output pulses of the modulator are obtained through the pulse transformer (T) after the energy storage capacitor (C1), the solid-state switch (V1) and the pulse transformer (T) form a discharge circuit. According to the small and efficient high-power solid-state modulator, the single solid-state switch is used, the equalization voltage and the connection consistency of the solid-state switch are not required to be considered, the voltage is low, insulation design can be achieved easily, the output waveform quality of the modulator is greatly improved, the circuit topological structure is simple, the size is small, the efficiency is high, modularization can be achieved easily, and the modulator is applicable to various platforms.

The invention relates to a moisture content measuring device based on a plug-in capacitive sensor. The moisture content measuring device comprises a capacitance sensor, a signal processing unit, an effective value measuring unit and a calculating unit. The capacitive sensor includes an excitation and measuring electrode as an excitation electrode and a measuring electrode, and two protection electrodes fixed above and below the excitation and measuring electrode. The signal processing unit comprises a front amplifier, a coaxial cable, an AC signal generator and a differential amplifier. A negative input end of the front amplifier is connected to the excitation and measuring electrode in the capacitive sensor through a coaxial cable signal line. A positive input end of the front amplifier is connected to the AC signal generator and is connected to the two protection electrodes in the capacitive sensor, a shielding layer of the coaxial cable and a negative input end of the differential amplifier. A standard resistor and a capacitor are connected in parallel and are connected to the negative input end and an output end of the front amplifier. The output end of the front amplifier is connected to a positive input end of the differential amplifier.

The invention discloses a pulse power synthesis circuit based on constant energy chopping technology. The pulse power synthesis circuit is composed of a chopper loop, a control loop, a transmission loop, and a synthesis loop. The chopper loop and the transmission loop have multiple stages and are connected in parallel between a power supply and the synthesis loop, the chopper loop and the transmission loop of the same stage are in coupling connection through a transformer of the same stage, and circuit structures of the chopper loop of each of the stages and the transmission loop of each of the stages are the same. Circuit components and connection relations of the synthesis loop are that: the right end of an inductor L and the upper end of capacitor C is connected to the upper end of a load R, the lower end of the capacitor C is connected to the lower end of the load R, the left end of the inductor L is an input upper end of the synthesis loop, and the lower end of the capacitor C isan input lower end of the synthesis loop; and two ends of the capacitor C are output ends of the synthesis loop. The pulse power synthesis circuit is adjustable in constant power output and the sizeof power and is adjustable in synthesis waveform frequency and low in waveform distortion factor, can make a switching device work in a soft switching state, does not damage main power devices when anoutput power circuit is short-circuited, and is large in load synthesis power.

The invention relates to a static parameter testing system and method, electronic equipment and a storage medium, and the system comprises at least one of a first measurement module, a second measurement module, a third measurement module, a fourth measurement module, a fifth measurement module and a sixth measurement module. The first measuring module, the second measuring module, the third measuring module, the fourth measuring module, the fifth measuring module and the sixth measuring module are connected with a measuring clamp through a switching module, and the first measuring module, the second measuring module, the third measuring module, the fourth measuring module, the fifth measuring module and the sixth measuring module are connected through a bus. The problems that in the prior art, a solid-state microwave power device static parameter measuring system is inaccurate in measuring result, complex in testing system structure, large in size and heavy in mass are solved.

The invention relates to the technical field of a component structure and particularly relates to a LRC component structure. The LRC component structure comprises the steps that: two metal support electrode plates are arranged on the element end electrode for electric connecting and fixing and buffering roles; two electrode plate supports are provided with a derivation pin derived inward or outward in the bottom; the derivation pin is fixedly connected to a circuit board; multichip LRC elements which are in series connection or parallel connection are soldered inside the two electrode plate supports. The multichip resistance capacitance element is vertical stack installation or horizontal stack installation. According to the corresponding principle or function of circuit, corresponding pins are only soldered on a bonding pad at using time, the LRC element bodies not touch the bonding pad, the impacts made by undesirable stress such as mechanical stress, temperature stress and the like are reduced by the buffer function of the electrode plate supports, the reliability for the LRC components is increased. The elements installation occupancy area is effectively saved through the stack component modular structure, and the line distribution parameter is reduced at the same time.

The invention relates to a high-power IGBT (insulated gate bipolar transistor) driver. A wire passes the centers of all of n transformers and serves as a primary winding for the n transformers. Each transformer comprises a secondary winding independent. Winding directions of the secondary windings are identical; the secondary windings are equal in the number of turns. The secondary windings are all connected in parallel. The secondary windings of the transformers are parallelly connected for outputting; great instantaneous output current can be provided; load carrying capacity is high; a distribution parameter is diminished; wide and narrow pushes are both considered; an IGBT can be on or off at higher speed; on and off loss of the IGBT is reduced. A drive circuit and a main circuit are isolated through the transformers; reliability of the drive circuit is greatly enhanced; damage of the drive circuit caused by failure of the main circuit is effectively prevented. Devices in secondary winding loops are all passive devices, no auxiliary power is required, the circuits are simple, fewer devices are used, circuit complexity is reduced, and parasitic interference is avoided.