65results about How to "Self loss is small" patented technology

The energy feedback type AC / DC electronic load simulator consists of two stages of PWM inverters with common DC bus as key parts. The input PWM inverter stage is connected through input filter inductor to the tested power source to constitute the load characteristic simulating part of electronic load; the output PWM inverter stage is connected through the isolating transformer and output filter inductor to the power network to constitute the energy feedback part of electronic load; and the load characteristic simulating part and the energy feedback part are independently controlled. The load characteristic simulating has single instantaneous current value control mode controlling the input load current amplitude and waveform, and the energy feedback has current and voltage double closed-loop control mode including phase lock loop to control the current waveform in the output network side and the bus voltage in the DC side. The present invention has small loss and high network side power factor.

The invention relates to a dynamic loss reduction method for a distribution network and a synthesized loss reduction system of a distribution network. A principle that an electric field and a magnetic field are mutually symbiotic and affected is applied for dynamically realizing electromagnetic balance; the treatment of'peak load shifting'is carried out on the current difference value between three-phase unbalanced currents caused by the dynamic unbalance of the power used by a three-phase load at the secondary side of a distribution transformer so as to lead the current difference value to approach balance, reduce a zero sequence current and the unbalance degree of the three phases, and restrain a harmonic, thereby realizing the self loss (loss on transmission) of the distribution transformer and the line loss (the copper loss of the line) at the first side and the secondary side of the distribution transformer; the synthesized loss reduction system of the distribution network realizes the synthesized loss reduction management of the distribution network, the loss on transmission of the distribution transformer as well as the automatic measuring and accounting on the data of the copper loss of the line at the first side and the secondary side thereof; the system also realizes the remote automatic collection on the power data of the distribution transformer in the same time as well as the accounting of the line loss of a distribution line, calculates and accounts the line loss of the distribution network, calculates and analyzes the loss reduction as well as analyzes the benefits of energy saving and emission reduction.

The invention discloses a new energy power generation system and a distributed mixing maximum power tracking method. When the system operates, a DC-DC converter and a rear-end centralized converter respectively perform MPPT on the output power difference portion of a single new energy power generating device and the output power of a whole new energy power generation system, at the same time, the DC-DC converter can directly merge the power difference portion of the single new energy power generating device into a rear-end DC bus, and through the mutual coordination and cooperation of two MPPT functions, the whole new energy power generation system reaches maximum power output. According to the invention, the maximum power output of each new energy power generating device in the system can be realized, accurate monitoring of output power can be provided, and precision data is provided for system analysis so that the system can adjust control strategies to improve system generating efficiency, and rapid positioning of problematic assemblies is facilitated.

The invention discloses a formation method for semiconductor devices. The formation method includes providing a substrate, and successively forming a first mask material layer, a sacrificial layer anddiscrete photoresist layers on the substrate; taking the discrete photoresist layers as masks to etch the sacrificial layer so that discrete sacrificial layers can be formed; forming first side wallscovering the side wall surfaces of the discrete sacrificial layers; forming second side walls covering the side wall surfaces of the first side walls after removing the discrete sacrificial layers; removing the first side walls through etching, taking the second side walls as the masks to etch the first mask material layer to form first mask layers; forming a second mask material layer covering the surfaces of the first mask layers; and removing part of the second mask material layer until the first mask layers are exposed, and removing the first mask layers through etching to form second mask layers. According to the method, the mechanical properties of the semiconductor device mask layers can be improved, and the accuracy of patterns can be enhanced during transferring.

A distributed new energy power generation system and a distrusted mixed maximum power tracking method. Output ends of a plurality of serially connected new energy power generation devices (1011, 1012, …, 101n) form a high-voltage direct-current bus bar. A DC-DC converter (102) and a backend integrated converter (103) separately perform MPPT on an output power of each new energy power generation device (1011, 1012, …, 101n) and an output power of a whole new energy power generation system. A difference current of the new energy power generation device (1011, 1012, …, 101n) is delivered to the DC-DC converter (102), and the output voltage is adjusted by using the DC-DC converter (102), so that this part of energy is merged into the direct-current bus bar and jointed delivered to the integrated converter (103), and by means of the collaboration of two MPPT functions, the whole new energy power generation system outputs a maximum power.

The invention belongs to the field of luminescent materials, and relates to a rare earth metal organic framework material and a synthesis method thereof. The rare earth metal organic framework material is constructed with deprotoned 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine as ligands, with rare earth metal ions as luminescent centers by pi-pi interaction of the ligands or C-H-pi interaction of the ligands and a solvent. The distance between the centers of aromatic rings corresponding to the pi-pi interaction of the ligands is 5 Angstroms, the interaction of the ligand molecules is enhanced,the rigidity of a material skeleton is increased, the loss of energy on the skeleton is reduced, the energy transfer from the ligands to the rare earth metals is also enhanced, the energy utilizationefficiency is greatly enhanced, and thus high quantum yield is obtained. The luminescent metal organic frame material has high energy utilization rate, and the quantum yield of the luminescent metal organic frame material is increased from less than 60% to 99.9% compared with that of a conventional rare earth metal organic frame material.

The invention relates to a novel intelligent dynamic hybrid reactive power compensation device. The novel intelligent dynamic hybrid reactive power compensation device comprises an SVG unit (2) and an SVC unit (3). A main circuit breaker (2.15), an isolation transformer (2.8), a first contactor (2.16), a second contactor (2.7), pre-charging resistors (2.6), reactors (2.5), discharging resistors (2.17) and filter capacitors (2.4) are arranged on the front side of the SVG unit (2). A main control panel (2.14), sampling Halls (2.13), adapter plates (2.12), IGBT modules (2.11), absorption capacitors (2.10) and a lamination bus bar (2.9) are arranged on the rear side of a SVG cabinet (2.3). The SVC unit (3) is composed of a fuse (3.1), a thyristor (3.2), an independent-compensation capacitor (3.3) and a joint-compensation capacitor (3.4). By means of the novel intelligent dynamic hybrid reactive power compensation device, the small-capacity SVG and the large-capacity SVC are combined and controlled to run in a coordinative mode, and the rapid characteristic of the SVG and the steady-state performance of the SVC are brought into full play.

The invention provides an automatic dust removing device for a cooler for a forced oil circulation power transformer and a dust removing method of the automatic dust removing device for the cooler for the forced oil circulation power transformer and belongs to the field of automatic dust removing equipment for coolers for forced oil circulation power transformers. The automatic dust removing device for the cooler for the forced oil circulation power transformer comprises the forced oil circulation power transformer and the cooler for the forced oil circulation power transformer and is provided with a controller, a phase changing device, a voltage transformer and a current transformer. The signal output end of the controller is connected to the signal input end of the phase changing device, the three-phase input end of the phase changing device is connected to the low-voltage wire outlet end of the forced oil circulation power transformer through the voltage transformer and the current transformer respectively, the cooler for the forced oil circulation power transformer is provided with a fan driven by a motor, and the three-phase output end of the phase changing device is connected to the power source input end of the motor. Dust and sundries on a fin tube of the cooler for the forced oil circulation power transformer can be effectively cleaned, the heat dissipation efficiency of the cooler for the forced oil circulation power transformer is improved, the maintenance workload is relieved, the operation temperature of the power transformer is reduced, and the expected service life of the power transformer is achieved.

The invention discloses a current conduction mode switching regulation voltage limiting circuit for a current source power supply system of a circuit breaker. A detection conditioning circuit of the current conduction mode switching regulation voltage limiting circuit comprises a power supply circuit, a starting control circuit, a bleed-off control circuit and nodes (1) to (7). When voltage which is input from the node (3) of the power supply circuit to Q3 through the node (4) of the starting control circuit reaches a starting value of the starting control circuit, the Q3 is switched on, and starting voltage is input to Q1 through the node (2) to switch the Q1 of the power supply circuit on. When the voltage which is input from the node (3) to the Q3 is lower than the starting value of the starting control circuit, the Q3 is switched off, and the voltage which is input from the node (2) to the Q1 by the starting control circuit is converted to be 0 to switch the Q1 off. Then voltage which is input from the node (5) of the power supply circuit to U1 through the node (6) of the bleed-off control circuit is higher than Vre, the voltage of the node (7) of the bleed-off control circuit is higher than a starting value of Q2, the Q2 is switched on and bleeds redundant energy off, and simultaneously, the voltages of the nodes (2 and 3) are both converted to be 0 to switch the Q1 off. When voltage input from the node (5) is lower than the Vre, the voltage of the node (7) is lower than the starting value of the Q2, the Q2 is switched off and stops bleeding the energy off, and simultaneously, the on / off switching of the Q1 is not controlled by the bleed-off control circuit.

The invention discloses a distributed new energy power generation system and a distributed mixing maximum power tracking method. When the system operates, a DC-DC converter and a rear-end centralized converter respectively perform MPPT on the output power difference portion of a single new energy power generating device and the output power of a whole new energy power generation system, at the same time, the DC-DC converter can draw out energy from a rear-end DC bus to offset the difference of the output power of a front-end single new energy power generating device, and through the mutual coordination and cooperation of two MPPT functions, the whole new energy power generation system reaches maximum power output. According to the invention, the maximum power output of each new energy power generating device in the system can be realized, accurate monitoring of output power can be provided, and precision data is provided for system analysis so that the system can adjust control strategies to improve system generating efficiency, and rapid positioning of problematic assemblies is facilitated.

The invention relates to a method for implementing a dual-switch grid-control TWT (Traveling Wave Tube) modulator with high pulse repetition frequency and low power consumption on the basis of a MOS (Metal Oxide Semiconductor) tube. In a conventional dual-switch grid-control modulator circuit, the high inverse-voltage MOS tube with good high frequency switching characteristic is used as a switching device, so that a modulator has good pulse front edge when a narrow pulse is output; a conventional mode of forming an oppositely-pulling state by short-time direct connection of start and end switching tubes so as to reduce time of a grid-modulated pulse back edge is changed and the loss on the switching tubes of the modulator is greatly reduced, so that the modulator can stably and reliably work under the extremely high repetition frequency; the single high inverse-voltage MOS tube is basically suitable for the voltage withstanding requirement and a voltage equalizing circuit and an isolating driving circuit are saved so that a circuit is simplified; and a TWT protection circuit is arranged so as to prevent a positive bias from being always added on a TWT grid when the start switching tube is broken down. The invention provides an effective technological approach for implementing the grid-control modulator with high performance and low power consumption and developing a grid-control TWT transmitter with high pulse repetition frequency.

The invention discloses a monocrystal half-piece photovoltaic module string arrangement mode, comprising the following steps of A, cutting a whole battery piece into half battery pieces; B, enabling Nhalf battery pieces to be connected in series and welded into a single string based on consistent chamfer angle direction; C, after the half battery pieces are connected in series and welded into single strings, enabling the battery strings to be arranged on glass paved with an adhesive film based on consistent chamfer angle direction for arrangement; D, after arrangement is completed, enabling the single strings to be connected in series by busbars into an integrated body; E, in serial connection, enabling the tail parts 1 and 2 strings to be connected in series, 3 and 4 strings to be connected in series and 5 and 6 strings to be connected in series, and enabling the head part 1 string to be connected singly, 2 and 3 strings to be connected in series, 4 and 5 strings to be connected in series and 6 string to be connected singly; and F, after string connection is completed, adding an adhesive film and an insulation cushion strip between the upper and lower busbars on the head part insequence, and then paving a back surface adhesive film, a back plate or back surface glass in sequence, and gluing a glass surface bar code and the like to complete a stacking operation. The half battery pieces are consistent in chamfer angle arrangement direction, so that the attractive degree of the module is improved.

The invention discloses an LED driving circuit which is connected with a thyristor dimmer and which comprises a rectifying circuit, a bleeder circuit connected with the rectifying circuit, an LED constant-current control circuit, a thyristor turn-on FIRE voltage detecting circuit, a thyristor cut wave angle detecting circuit and a bleeder current control circuit. The thyristor cut wave angle detecting circuit generates a first result signal. The thyristor turn-on FIRE voltage detecting circuit generates a second result signal. The bleeder current control circuit, when receiving the first result signal and the second result signal, instructs the bleeder circuit to start a high-efficiency mode in which the bleeder circuit is started by delaying the start time of following preset N half-wavecycles of a DC bus voltage signal Vin with a preset time Tdelay, wherein N is a positive integer. The LED driving circuit can reduce its own loss, improve the driving efficiency of the thyristor, reduce the cost, and saves power in the high-efficiency mode.

The invention discloses a compressor control method and device, a storage medium and a compressor. The method comprises the steps of obtaining the required frequency of the compressor; determining a PWM duty ratio and a bus voltage value of a PFC circuit in a control end of the compressor according to the required frequency of the compressor; and according to the PWM duty ratio of the PFC circuitand the bus voltage value, adjusting the operation frequency of the compressor, so that the operation frequency of the compressor reaches the required frequency of the compressor. According to the method, the problem that the operating frequency of the compressor cannot meet the required frequency when the required frequency of the compressor reaches the maximum value of the effective voltage of the compressor can be solved, and the effect that the operating frequency of the compressor can meet the required frequency is achieved.

The present invention relates to a high-isolation dual polarization station antenna unit facing 5G application. The unit comprises a dielectric slab, a coaxial feeder, a back panel and an SMA feeder arranged in order from top to bottom. The front and back surfaces of the dielectric slab are etched with a first bow-tie dipole antenna and a second bow-tie dipole antenna which are vertically arrangedat +-45 degrees, each bow-tie dipole antenna is formed by two symmetrically arranged dipole antenna arms, and each dipole antenna arm comprises one optimized fractional parasitic structure. The high-isolation dual polarization station antenna unit facing 5G application forms a station antenna unit with low loss and high isolation features and low loss and high loss and high isolation through theoptimized fractional parasitic structure so as to reduce the loss of the antenna itself and reduce the self interference between antennas.

The invention provides a three-phase five-wire system harmonic protector capable of effectively restraining higher harmonics generated in electric equipment and performing harmonic protection on the electric equipment in a low-voltage distribution system. The three-phase five-wire system harmonic protector is used for solving the problem of high-frequency harmonic interference in the distribution system, and reducing the harm of high-frequency harmonics to the electric equipment, particularly a precision load. The three-phase five-wire system harmonic protector comprises a shell and a harmonic protection circuit installed in the shell. The harmonic protection circuit comprises A phase, B phase and C phase surge protection circuits and A phase, B phase and C phase high-frequency filter circuits.

The invention discloses a large-gradient drilling and tunneling machine which is provided with a cutting part, a shovel plate part and a walking part, wherein the cutting part comprises a cutting support and a cutting head mounted on the cutting support; the shovel plate part comprises a shovel plate body, and the shovel plate body comprises a main shovel plate and side shovel plates positioned on the two sides of the main shovel plate; a chute is formed in the middle-rear part of the main shovel plate, and star wheels are mounted on the side shovel plates; the walking part comprises a walking frame, a tensioning wheel, a driving wheel, a track assembly and a landing leg component, and the landing leg component is mounted on the side wall of the walking frame and can be inserted into the ground; shovel plate telescoping mechanisms which can extend to the outer sides of the side shovel plates are arranged below the side shovel plates of the shovel plate part. In the large-gradient environment, the large-gradient drilling and tunneling machine cannot slip down during tunneling operation, and fallen coal seams or ores during cutting are cleanly and thoroughly cleared up. In addition, the large-gradient drilling and tunneling machine is not influenced by the hardness of roadway rock during tunneling operation and is high in tunneling efficiency and small in equipment loss.

The invention discloses an auxiliary filtering cabinet. The auxiliary filtering cabinet comprises N reactors, N capacitors, a cabinet body and a cabinet door, wherein the cabinet door and the cabinet body are connected to form a cavity which is used for containing the N reactors and the N capacitors, the N is a natural number which is larger than one, the cabinet body comprises N-1 separating plates, and the cavity is divided into N sub-cavities by the separating plates, and each reactor and each capacitor are installed in each sub-cavity. When the auxiliary filtering cabinet is adopted, the size of the auxiliary filtering cabinet can be reduced, and stability and reliability of the auxiliary filtering cabinet are improved.

The invention provides an electromagnetically driven braided fabric pulling device. The device comprises a casing, a drive module and a lifting module, wherein the drive module and the lifting moduleare connected onto the casing, the drive module is connected with the lifting module through a push-pull rod, the drive module changes current through an electromagnet to produce position change in apermanent magnet group to drive the push-pull rod to move up and down, so that a slide rail in the lifting module to move up and down, the upper end of the slide rail is connected with a needle claw,and the needle claw moves to complete pulling. The provided electromagnetically driven braided fabric pulling device is simple and flexible due to a modular design structure, can pull any position ofbraided fabric and can accurately control and adjust pulling force.

The invention relates to a wind power generator, in particular to a permanent magnetic direct driving wind power generator. The wind power generator comprises a wind wheel with an oar blade; and the wind wheel is arranged on the front end of a mainshaft. The mainshaft is connected with a generator shaft through a coupler; the middle section of the generator shaft is fixedly connected with a rotor supporting seat; the outside of the rotor supporting seat is fixedly connected with a rotor barrel; the inner sidewall of the rotor barrel is fixedly connected with a permanent magnet; the generator shaft of two sides of the rotor supporting seat are provided with a coil bracket through a bearing respectively; the outer side of the coil bracket is provided with a stator coil; and the coil bracket is fixedly connected with the supporting seat. The wind power generator ensures the power output at low rotational speed, does not need a gearbox, improves the output efficiency and service life, reduces the fault rate, directly outputs sine alternating current and does not need a rectifying inverter, thereby reducing the fault rate and prolonging the service life; the wind power generator is convenient to realize multistage modularization, has convenient adjustment and low difficulty in transportation and hoisting, can be used for a wind power generator with superlarge power; and parts of the rotors have light quality and the conversion efficiency of electrical energy is high.

The invention relates to a phase-change switch for a three-phase unbalance treatment device and a phase-change method thereof. The phase-change switch comprises a phase-change switch shell and a three-phase thyristor valve-AC contactor parallel structure and a trigger board encapsulated in the shell; and the thyristor valve-AC contactor parallel structure is connected with a current transformer. The phase-change method comprises the following steps: keeping the phase-change switch in a working phase, wherein the AC contactor in the working phase is closed and the thyristor is latched; the AC contactor in a non-working phase is in a break-brake state and the thyristor is latched; and when the three-phase unbalance of a power system exceeds the national standard, switching the phase-change switch to a low load phase. The technical scheme provided by the invention adopts a mode that the contactor is used in parallel with the thyristor, and combines the characteristics that the running power consumption of the contactor is small and the switching speed of the thyristor is fast, so that the phase-change switch of the three-phase unbalance treatment device has both the advantages of the AC contactor and a power electronic fling-cut switch, thus there is no power outage in the phase change process and no impact on the system at the same time.

The invention discloses a gas-insulated power supply device. The gas-insulated power supply device comprises a high-transformation-ratio transformer, a voltage regulating circuit for achieving regulation of output voltage of the high-transformation-ratio transformer, a protection-level current transformer, a metering-level current transformer and a control screen unit, wherein the high-transformation-ratio transformer is connected with a high-voltage power transmission line through a high-voltage bushing and is connected with an external electrical load through a power output terminal, the first end of the protection-level current transformer is connected to the high-voltage bushing, the second end of the protection-level current transformer is connected to a high-voltage protection control module of the control screen unit, the first end of the metering-level current transformer is connected to the high-voltage bushing, the second end of the metering-level current transformer is connected to an electric energy metering module of the control screen unit, the control screen unit comprises the high-voltage protection control module, the electric energy metering module, a fault recording module, a low-voltage control module and a power module, and a power supply port connected to the high-transformation-ratio transformer is used for providing power for the high-voltage protectioncontrol module, the electric energy metering module, the fault recording module and the low-voltage control module.

A double-efficiency fuzzy optimization control method for a doubly-fed wind generator is characterized in that after the wind generator is combined to a grid and before the wind generator reaches an allowed highest rotation speed, maximum wind energy tracing and controlling are adopted to control the wind generator, in the process of the maximum wind energy tracing and controlling, a control mode is switched to optimal idle work searching control at a proper moment, and accordingly double-optimization on the operation efficiency of the generator is achieved. The double-efficiency fuzzy optimization control method has the advantages that in the process of the maximum wind energy tracing and controlling, searching accuracy of a fuzzy reasoning rule list can be improved through changes of quantization factors of input variables of the fuzzy reasoning rule list, occurrence of adjusting dead bands is avoided, and a use ratio of wind energy by the wind generator is improved. In the process of optimal idle work tracing, vibration can be effectively restrained, the searching accuracy is improved, loss of the wind generator is reduced, and active output is improved.

The invention provides an intelligent hybrid energy storage and power supply terminal. The intelligent hybrid energy storage and power supply terminal comprises a controller, a direct current power driving board, a first sampling unit, a first input interface and an electrical selector switch, wherein the first input interface is used for being connected with an external direct current input; the first sampling unit is used for sampling the direct current input and transmitting the sampled information to the controller; the controller obtains a direct current input type according to the sampled information and then controls the direct current power driving board to be adjusted into a corresponding function to store the direct current input into an energy storage unit; and the controller also controls the electrical selector switch to enable the electrical selector switch to selectively connect a domestic electrical side and an alternating current grid side, so that the electric energy stored by the energy storage unit can supply power for the domestic electrical side, or the alternating current grid side can supply power for the energy storage unit to be stored.

The invention relates to a multi-mobile energy storage car emergency power-supply coordinating control algorithm. When a monitoring center receives an emergency power-supply requirement sent out by a load, the factors of current running states of schedulable mobile energy storage cars, the distance of the load, the road condition, required power and capacity and the like are comprehensively analyzed; and coordinating control is carried out on the mobile cars, so that the losses of the whole cars are reduced; over-charge and over-discharge of the energy storage cars are prevented; and the service lifetime of energy storage systems is prolonged.

Disclosed is an automatic switching device for intelligently controlling multiple transformers. The automatic switching device is applicable to power supply networks of large and medium factories, capacity of a controlled system is preset to be 10MW, and primary side voltage of the transformers is 10kV. A chip 80C51, developed and produced by Intel Company, in a single chip microcomputer in a MSC-51 series is selected for a control unit of the automatic switching device, and novel setting of hardware, a clock program and a keyboard program is adopted.

Disclosed is a furnace core coil type high-medium-low frequency smelting furnace. A furnace core power supply coil and a center iron core are designed in the center of a combustion chamber of the high-medium-low frequency smelting furnace. The furnace core power supply coil is wound on the center iron core. The center iron core is fixed to the center of the furnace bottom perpendicularly, or the center iron core in the combustion chamber and part of an iron core arranged at the furnace bottom and on a furnace shell form an E-shaped magnetic field loop. The furnace core power supply coil and the center iron core have cooling measures. The middle of the furnace bottom of the smelting furnace is provided with cooling medium inlet-outlet connectors of the furnace core power supply coil and the center iron core. Insulation and refractory materials are arranged outside the center iron core and the furnace core power supply coil, and the center iron core and the furnace core power supply coil are isolated from combustion chamber working materials. Magnetism isolating is conducted on the furnace bottom of the combustion chamber of the smelting furnace and the furnace shell, suitable materials are selected, a closed loop and eddy heating are prevented, and water cooling is conducted on the smelting furnace shell in necessity.

The invention discloses a series photovoltaic optimization system and a control method thereof. The input end of each series photovoltaic optimizer is connected with the output of a corresponding photovoltaic panel in parallel, the output end of each series photovoltaic optimizer is connected with the output end of the corresponding photovoltaic panel in series, and the series photovoltaic optimizers enable each photovoltaic panel to realize the maximum power output through a mode of converting the unmatched energy from parallel connection into series connection, thereby effectively solving aproblem that the generating capacity of the system is reduced duo to the unmatched photovoltaic panels in a string. In addition, the series photovoltaic optimizers only convert the unmatched energy, so that the optimizers have the advantages of low power, low loss, small amount of generated heat and low cost.

The invention discloses a low-voltage large-current output transformer, which comprises a primary side winding wound on an iron core and a secondary side winding wrapped outside the primary side winding. The secondary side winding is formed by assembling a first seat body, a second seat body and a second round-tube-shaped center post. A first center post and the second center post are large in superficial areas, capable of bearing large current and heat productivity, small in self loss and capable of producing large power. The second center post can be suitable for transformers with different secondary side windings, has generality and can achieve large-batch production. The secondary side winding is divided into three independent portions including the first seat body, the second seat body and the second center post, and is convenient to manufacture and assemble. Especially, the second seat body and the second center post are small in volume and can be made of scrap edges, thereby reducing the production cost. The second center post and the first center post adopt concentrically-nested installing structures, thereby facilitating expansion of the number of the secondary side windings of the transformer.

The invention provides an adjustable reactor type voltage regulating and stabilizing device, and belongs to the technical field of power electronics. Compared with a saturation reactor type voltage regulating and stabilizing device, the adjustable reactor type voltage regulating and stabilizing device has the characteristics of precise control, large adjustment range, high repeatability precision and low loss.