310results about "Variable transformers" patented technology

An on-load tap-changer includes: a tap-changer body and a driving mechanism fixed on the tap-changer body. The tap-changer body includes a housing, multiple insulation fixing plates, multiple turntables, each of which includes a sheave and a cam plate, the cam plate of which is rotatably connected to the insulation fixing plate, and the sheave of which is connected to the driving mechanism, multiple vacuum tubes fixed on the multiple insulation fixing plates, and multiple transmission mechanisms, each of which includes a lifting lever and a reverse spring. When the driving mechanism drives the sheave to regulate voltage, the cam plate is synchronously driven to rotate, and then the vacuum tube is driven by the lifting lever and the reverse spring to achieve on / off arc extinction, thereby achieving on-load voltage regulation.

The utility model relates to an inductor, which comprises a magnet and one or more groups of windings arranged in the magnet, and each group of windings comprises a main winding and an auxiliary winding; a through hole is formed in the magnet and penetrates through the first end face and the second end face of the magnet. The main winding and the auxiliary winding of each group of windings are assembled in the through holes; wherein each winding penetrates through the through hole and is arranged in the through hole of the formed magnet in a penetrating manner for assembly, and the two ends of each winding penetrate out of the through hole and are exposed out of the first end face and the second end face of the magnet respectively. After the magnet is formed, the winding is assembled, and the problem that the main winding and the auxiliary winding are conducted due to high-pressure forming is solved.

The application discloses a variable-load super-large capacity dry-type transformer, relates to the related technical field of dry-type transformers, and comprises three groups of main iron core columns and three groups of auxiliary iron core columns, wherein the main iron core column section is provided in a stepped shape, the inside of the main iron core column is stacked by three layers of amorphous alloy strips, the thickness of the middle layer of the three layers of amorphous alloy strips is 1.2-1.5 times that of the two side layers, and the lamination groups in the inside of the auxiliary iron core column are provided with independent lap pieces at the joints. The application realizes uniform magnetic flux density distribution and single-column capacity improvement by combining the stepped section of the three groups of main iron core columns with the magnetic yoke which is thin at the top and thick at the bottom, solves the problems that the single capacity of the traditional dry-type transformer is limited and the whole machine needs to be replaced for capacity expansion, reduces the occupied volume through modular splicing, increases the capacity of a single group of iron core columns, and reduces the no-load loss.

The invention discloses an OLTC topological structure of an electronic soft switching technology and a driving method. In the topological structure, a power supply is connected with a first transformer, the first transformer is connected with a second transformer, and the second transformer is connected with a load; a low-voltage winding of the first transformer is connected with a plurality of taps; the fixed end of the low-voltage winding of the first transformer and each tap are connected with one end of an independent mechanical switch; according to an interval connection mode, the other ends of all the mechanical switches are connected to form two series switch loops, and each series switch loop is connected with an independent electronic change-over switch to form two series circuits; the two electronic change-over switches are connected in parallel, and the second transformer is connected into a series circuit controlled by the two electronic change-over switches respectively. The mechanical switch and the electronic change-over switch are jointly used, so that short-circuit current and surge voltage cannot be generated when the electronic change-over switch performs state switching, and the quality of output voltage waveforms is improved.

The invention relates to the technical field of transformers, in particular to an oil-immersed transformer with a tapping regulating switch, which comprises a main oil tank, an iron core is arranged in the main oil tank, a low-voltage winding is arranged around the outer side of the iron core, a high-voltage winding is arranged around the outer side of the low-voltage winding, and the oil-immersed transformer further comprises an auxiliary oil cylinder, the auxiliary oil cylinder is vertically arranged on the rear side of the main oil tank, and a loading and unloading opening is formed in the top of the auxiliary oil cylinder. The whole switch module, including the switch mounting rack, the tap switch and the sealing cover plate, is safely, stably, cleanly and vertically lifted out of the auxiliary oil barrel as a whole through a hydraulic lifting structure formed by the lifting oil cylinder, and meanwhile, the auxiliary oil barrel is communicated with the lifting oil cylinder through the oil way design; oil pumped out from the bottom of the auxiliary oil barrel directly enters the bottom of the lifting oil cylinder to serve as a pushing medium, internal recycling of the oil is achieved, dependence on large hoisting equipment and a large amount of manpower is reduced, and the tap adjusting switch is more flexible and convenient to maintain.

According to the high-low voltage lead structure of the single-machine 48-pulse hydrogen production rectifier transformer, a left device body, a right device body and a self-coupling modulation device body are arranged in an oil tank of the single-machine 48-pulse hydrogen production rectifier transformer, the self-coupling modulation device body is connected with the left device body and the right device body at the phase angle difference of 7.5 degrees, and the self-coupling modulation device body is powered by a grid-side three-phase power source. Power sources of the left transformer body and the right transformer body are output through the self-coupling modulation transformer body, a phase shift phase with the phase angle difference of 7.5 degrees is arranged between the left transformer body and the right transformer body, and four rectifiers with 12 pulses and 15-degree phase difference can be dragged by the valve side of a single 48-pulse rectifier transformer, so that the one-to-four function can be effectively realized, and the power consumption is reduced. Meanwhile, the size and the weight of the system are effectively reduced, the overall manufacturing cost is greatly reduced, and rapid industrialization of green hydrogen is facilitated.

According to the cottonseed-based natural ester oil insulation transformer box body, a capsule oil conservator is installed at one end of the top of the transformer box body, is filled with cottonseed-based natural ester insulating oil and is communicated with heat dissipation oil in the inner space of the box body through a pipeline; the other end of the box body is provided with an on-load tap-changer; a plurality of finned radiators are respectively mounted on the left and right sides of the box body, and oil pipes of the finned radiators are connected with the interior of the transformer box body to form heat-conducting oil circulation heat dissipation; an oil surface temperature controller and a winding temperature controller are mounted at the end part of the box body; a gas relay and a pressure relief valve are mounted at the top of the box body; an oil drain valve, an oil sample valve and a grounding bolt are installed at the bottom of the box body. The capsule oil conservator has the beneficial effects that the capsule oil conservator can be used for supplementing lost heat-conducting oil into the transformer box body or guiding redundant heat-conducting oil into the capsule oil conservator. The on-load tap-changer can adjust the gear of the winding in the transformer box body; and the heat-conducting oil of the radiator is connected with the heat-conducting oil in the transformer box body to form heat-conducting oil circulating heat dissipation.

The invention relates to a load transfer switch (1) for a load tap changer (2), comprising at least one vacuum interrupter (30), a handling element (50) which is mechanically connected to the vacuum interrupter (30) on a first end (51) and has a roller (53) on a second end (52), a handling body (10) which has a base body (11) and at least one cam (20), wherein the vacuum interrupter (30) is handled via the handling element (50) by the roller (53) being driven over the handling body (10), at least one part (21) of the cam (20) having a higher strength than the base body (11).

The invention discloses a flexible standby transformer which comprises an iron core, and a low-voltage winding, a medium-voltage winding, a voltage regulating winding and a high-voltage winding are wound on the iron core. The low-voltage winding serves as the low-voltage side of the transformer, the head end of the low-voltage winding is connected with the tail end of the medium-voltage winding, the head end of the medium-voltage winding is connected with the tail end of the voltage regulating winding and the tail end of the high-voltage winding respectively, and the voltage regulating winding and the high-voltage winding are both multi-tap windings and serve as the medium-voltage side and the high-voltage side of the transformer respectively. The low-voltage winding serves as the low-voltage side, the voltage regulating winding is adopted to regulate the medium voltage of the medium-voltage winding side, the voltage regulating winding serves as the medium-voltage side, the high-voltage winding serves as the high-voltage side, flexible regulation and control of the medium voltage and the high voltage are achieved through multiple taps, and the requirements under various standby working conditions can be met.

The invention relates to the technical field of electric power system control, in particular to a phase-shifting transformer, an electric power system and a simulation verification method of the phase-shifting transformer, the phase-shifting transformer comprises an exciting transformer and a series transformer, the exciting transformer comprises a tertiary winding, the series transformer comprises a secondary winding, and the secondary winding comprises a primary winding and a secondary winding. A primary side winding of the exciting transformer is connected to a midpoint of a secondary side winding of the series transformer, the secondary side winding of the exciting transformer is connected to a current-phase line of the secondary side winding, and a tertiary winding of the exciting transformer is connected with a primary winding of the series transformer; voltage regulating switches are arranged on respective windings of the exciting transformer and the series transformer, and advanced regulation or lagging regulation is carried out on the voltage phase of the power system through the voltage regulating switches on the respective windings of the exciting transformer and the series transformer. Therefore, the problems of low adjustment precision, insufficient adjustment flexibility, difficulty in zero-difference adjustment and the like of a traditional phase-shifting transformer in the related technology are solved.

System (200) for operating a load tap changer, wherein the system comprises: a plurality of strands (208, 210), at least one of which is caused to switch from a first tap (202) to a second tap (204) of the load tap changer upon receipt of a tap change signal, each strand having at least one mechanical switch (214, 216) and wherein an electrical connection is established between the first tap (202) or the second tap (204) and a supply terminal (212) of the load tap changer when at least one mechanical switch (214, 216) of at least one of the plurality of strands is opened; and a plurality of semiconductor switches (220, 222, 224, 226), wherein each semiconductor switch (220, 222, 224, 226) is arranged in parallel to the mechanical switches (214, 216) and, in the activated state, provides an electrical connection between the first tap (202) or the second tap (204) and a supply terminal (212) of the load tap changer; and a processing unit (228) configured to selectively activate and deactivate the mechanical switches (214, 216) and the semiconductor switches (220, 222, 224, 226) such that the electrical connection between the at least one tap (202, 204) and the supply terminal (212) is maintained during the transition of the at least one strand (208, 210) from the first tap (202) to the second tap (204) without causing a short circuit between the two taps (202, 204). the processing unit (228) is also configured to: Generating the step switching signal to move at least one strand (208, 210) from the first tap (202) to the second tap (204) when a condition for step switching is met; Generating activation signals for the semiconductor switches (220, 222, 224, 226) when the stage switching signal is generated; and Generating a plurality of deactivation signals for the mechanical switches (214, 216) from at least one strand (208, 210) connected to the first tap (202) when a stage switching condition is met.

The on-load tap changer (100) comprises an input shaft (O1), an output shaft (O2), an input crank portion (1), a connecting rod portion (2), a swing crank portion (3), a first spring (6a), a second spring (6b), an output crank portion (4), a first limiting member (5a) and a second limiting member (5b), and an on switch (10). The swing crank portion (3) comprises a swing side first portion (31) and a swing side second portion (32). The swing side second portion (32) and the swing side first portion (31) sandwich the output shaft (O2). The first spring (6a) is connected with the swing side first portion (31). The second spring (6b) is connected with the swing side second portion (32). The direction of the force acting on the swing side second portion (32) under the action of the second spring (6b) is opposite to the direction of the force acting on the swing side first portion (31) under the action of the first spring (6a).

The invention relates to a power supply device (1) for an electrolyzer (10), wherein the power supply device (1) comprises an input circuit (2) and a power converter (3), the input circuit (2) being configured to be connected to a power source (4) or a power supply network. To improve the power supply device (1), it is proposed that the input circuit (2) be further configured to provide at least two different electrical potentials at contacts (5), the power converter (3) being electrically connected on the input side to at least one of the contacts (5) by means of a respective conductor (6), and the power supply device (1) being configured such that a change in the contact (5) connected to the power converter (3) is effected by reconnecting at least one conductor (6) of the power supply device (1).Furthermore, the invention relates to an electrolysis device comprising such a power supply device (1) and an electrolyzer (10). The invention further relates to a method for controlling such a power supply device (1) or such an electrolysis device (100), wherein the power converter (3) is operated with one of the voltage levels generated by the input circuit, wherein, to change the voltage level, at least one conductor (6) of the power supply device (1) is manually switched from a first contact of the contacts (5) to a second contact of the contacts (5).

This utility model relates to a structure for fixing the on-load switching cable of a distribution transformer, belonging to the field of transformer technology. It includes a distribution transformer with an on-load switching cable mounted on it. A fixing component for limiting the on-load switching cable is provided between the on-load switching cable and the distribution transformer. The fixing component includes either cable fixing assembly I or cable fixing assembly II. Both cable fixing assembly I and cable fixing assembly II include a clamp that is pressed and embedded into the on-load switching cable, and bolts are provided on the clamp for fixing it. This design features a simple structure and good performance. It solves the problem of messy distribution of on-load switching cables on distribution transformers and the resulting safety hazards. The fixing component between the distribution transformer 1 and the on-load switching cable 3 not only achieves the stability and safety of the cable but also improves the flexibility and maintainability of the overall structure, providing a reliable guarantee for practical applications in power engineering.

The present invention provides a tap changer that can prevent short circuits from occurring between tap terminals due to air accumulating on the underside of the tap changer. [Solution] A tap changer 1 used in a transformer in which insulating oil is stored inside, comprising a base portion 2 having a plurality of mounting seats 22 for tap terminals 3, the base portion 2 having at least one air vent hole 26 in the center between the mounting seats 22.

The application relates to the technical field of transformers, and discloses a transformer capable of adjusting output voltage, which comprises a transformer body, the upper surface of the transformer body is fixedly connected with an insulating ceramic, the inside of the insulating ceramic is provided with a connecting head, the upper surface of the transformer body is fixedly connected with a wire clamp mechanism one and a wire clamp mechanism two, the outer surface of the wire clamp mechanism one is fixedly connected with a locking mechanism, the wire clamp mechanism one can be conveniently sleeved at the connection position of a cable and the transformer, can be accurately matched according to different connections, can be reinforced by high-strength components, and can prevent the connection from being loosened due to adjustment vibration; the wire clamp mechanism two can be fixed to the transformer, can absorb external impact, and can protect the connection; the locking mechanism is additionally arranged and can lock the wire clamp mechanism one and the wire clamp mechanism two; the clamping parts can also realize component interlocking locking, and can comprehensively guarantee the stability and safety of power transmission.

This invention discloses a multi-core variable inductor control method based on illumination adjustment and its application in a boost converter. The method acquires real-time ambient light intensity information through an ambient light sensor and transmits the collected light data to a controller. The controller controls the excitation current of the control winding in the multi-core variable inductor according to a preset illumination threshold, thereby adjusting the equivalent inductance value of the variable inductor. By adjusting the inductance value, the boost converter dynamically switches between continuous conduction mode (CCM), boundary conduction mode (BCM), and discontinuous conduction mode (DCM) to adapt to different illumination conditions and load requirements. This method can improve the dynamic response capability, maximum power point tracking efficiency, and overall energy conversion efficiency of photovoltaic systems under different irradiance intensities, exhibiting good environmental adaptability and broad application prospects.

The application discloses a transformer on-load tap changer based on a phase selection technology and a gear switching method, which comprises a main circuit and a transition circuit connected with transformer winding taps, the main circuit comprises gear selection circuit and on-off circuit connected in sequence, the gear selection circuit comprises at least four relays for switching the working gear of the transformer; the on-off circuit is composed of vacuum circuit breaker VCB2, diode D2 and vacuum circuit breaker VCB4 connected in series; the transition circuit is formed by transition resistor R, vacuum circuit breaker VCB1 and diode D1 connected in parallel, and vacuum circuit breaker VCB3 connected in sequence, the transition circuit cooperates with the main circuit to realize the arcless switching of the transformer gear; all the vacuum circuit breakers are controlled to act by permanent magnet operating mechanisms, and the permanent magnet operating mechanisms are used to drive the vacuum circuit breakers to realize the fast on-off according to the voltage phase signal. The application controls the action of the vacuum circuit breaker by the phase selection technology and the conduction and cutoff characteristics of the diode, reduces the generation of arc, and prolongs the electric life.

A movable transformer on-load switch oil tank device relates to the technical field of transformer on-load switch maintenance equipment and comprises a horizontal oil tank body, a front universal wheel and a rear universal wheel, the front universal wheel and the rear universal wheel are arranged at the bottom of the oil tank body, a rotating handle is arranged on the front side of the oil tank body in the moving direction, and the lower end of the rotating handle is connected with the front universal wheel. A cover plate is detachably arranged on an opening in the front side of the oil tank body in the moving direction in a sealing and covering mode, an oil injection pipe is connected to the cover plate, a vacuum air nozzle and an oil injection opening are formed in the oil injection pipe, the vacuum air nozzle is connected with an external vacuumizing pipeline, the oil injection opening is used for oil injection of a transformer, and an oil discharge pipe is arranged at the bottom of the oil tank body. And the oil discharge pipe is used for injecting oil in the oil tank body into a transformer switch barrel and can be matched with the oil injection port to circularly heat and filter the oil. According to the utility model, the transformer oil required in the field core hanging inspection of the on-load switch of the transformer is effectively solved. The appearance size is small, and transportation and movement are convenient.

An on-load tap-changer is for uninterrupted switchover between winding taps of a tap-changing transformer. The on-load tap-changer includes: fixed contacts being configured such that each of the fixed contacts is connectable to a winding tap of the tap-changing transformer; a first selector arm which is configured to selectively make contact with each of the fixed contacts; a second selector arm which is configured to selectively make contact with each of the fixed contacts; a load take-off lead; a first main current branch which connects the first selector arm to the load take-off lead via at least a first current-limiting element; a second main current branch which connects the second selector arm to the load take-off lead via at least a second current-limiting element; and a bridging circuit configured to selectively bridge the first current-limiting element and / or the second current-limiting element by at least one switching element.

The present invention provides an on-load tap changer that can drive a tap selector and a changeover switch with a simple configuration that reduces the number of parts. [Solution] An on-load tap changer comprising a tap selector and a changeover switch, comprising: a drive shaft for driving the tap selector; an energy storage member for storing the rotational force of the drive shaft as a biasing force; an energy storage case that can move forward and backward by the biasing force released by the energy storage member; a cam that rotates in conjunction with the forward and backward movement of the energy storage case; and a cam follower that moves in accordance with the rotation of the cam and drives the changeover switch.

The utility model provides a sealing structure of a tap switch operating mechanism, which comprises a welding flange, a mounting flange, a conical shaft sleeve and a shaft seal, the welding flange is welded at the top of a transformer box cover, the mounting flange is arranged at the bottom of the operating mechanism and is connected with the welding flange through a bolt, the outer wall surface of the conical shaft sleeve is a conical surface, and the conical shaft sleeve is sleeved outside a main shaft. According to the tap switch operating mechanism, through the taper fit of the mounting flange and the conical shaft sleeve, the taper interference is realized, and the sealing performance of the tap switch operating mechanism is improved.

The invention provides a high-voltage double-voltage vehicle-mounted mobile transformer, which relates to the technical field of transformer manufacturing and comprises a transport vehicle, an oil tank is arranged at the top of the transport vehicle, an iron core is arranged on the right side in the oil tank, and the iron core is sequentially sleeved with a low-voltage winding, a high-voltage winding, a balance winding and a high-voltage regulating winding from inside to outside. A no-load tap changer is arranged on the front side of the left side in the oil tank, an on-load tap changer is arranged on the rear side of the left side in the oil tank, a high-voltage A-phase sleeve, a high-voltage B-phase sleeve and a high-voltage C-phase sleeve are sequentially arranged outside the oil tank from front to back, a low-voltage sleeve is arranged on the left side of the top of the oil tank, and a balance sleeve is arranged on the rear side of the middle of the top of the oil tank. The high-voltage winding is connected with the no-load tap changer and the high-voltage bushing through a lead, the high-voltage tap changer is connected with the on-load tap changer through a lead, the low-voltage winding is connected with the low-voltage bushing through a lead, and the balance winding is connected with the balance bushing. The invention has the advantages of reliable insulation, small volume, light weight, strong shock resistance and low cost.

The invention relates to the technical field of transformers, and discloses an energy-saving dry-type transformer which comprises a transformer body, the transformer body is provided with a high-voltage winding, the high-voltage winding is provided with two blocking hole sets, and each blocking hole set comprises three blocking holes which are arranged on the circumferential face of the high-voltage winding in a regular triangle shape. The two groups of gear hole groups jointly define five voltage regulating gears, the distance between every two adjacent gear holes is consistent, during operation, only an input shaft of the transfer case needs to be rotated, the two conductive columns can be driven by the linkage piece to be synchronously and accurately inserted into or withdrawn from the corresponding gear holes, and electrical connection with a high-voltage winding coil tap is completed. According to the structure, a traditional bolt connection mode is abandoned, the operation process is remarkably simplified, time and labor are saved, the rapid gear shifting requirement in the test process is particularly met, and the test efficiency and the production progress are effectively improved.

The present invention relates to a device and a method for transforming a connection group of a transformer, wherein the transformer comprises a plurality of windings on a low voltage side, the plurality of windings comprising a first end and a second end as outgoing ends, the device comprising a movable connection assembly, wherein each of the first end and the second end of the plurality of windings is electrically conductively connected to the movable connection assembly, wherein the movable connection assembly comprises a plurality of movable connection pieces, wherein each of the plurality of movable connection pieces is rigidly connected to the first end of one winding of the plurality of windings and to the second end of another winding of the plurality of windings in a detachable manner.

An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

The invention relates to a device (1) for reactive power compensation in a high-voltage network (17) comprising at least one phase conductor (16, 18, 19). A high-voltage connection (8) is provided for each phase of the high-voltage network. Each high-voltage connection (8) is connected to a first high-voltage winding (5) which surrounds a first core portion (3) and to a second high-voltage winding (6) which surrounds the second core portion (4). The core portions (3, 4) are part of a closed magnetic circuit. The low-voltage ends of each high-voltage winding can be connected to at least one saturation switching branch (10, 11) which is designed to saturate the core portions (3, 4) and has actuatable power semiconductor switches (20, 21, 22, 23). A control unit (26) is also provided for actuating the power semiconductor switches (20, 21, 22, 23). In order to manufacture the device as cheaply as possible, each saturation switching branch (10, 11) has at least one two-pole submodule (12) having a bridge circuit which has power semiconductor switches (20, 21, 22, 23) and a DC voltage source (24) so that, depending on the actuation of the power semiconductor switches (20, 21, 22, 23), the DC voltage source (24) can either be connected in series to at least one high-voltage winding (5, 6) or can be bridged.

The utility model relates to the technical field of transformers, in particular to an adjustable inductance structure for a high-frequency transformer. According to the technical scheme, the transformer comprises a set of bases used for supporting, iron stands are fixedly arranged on the upper surfaces of the bases, and coils are wound around the outer walls of the iron stands; the iron core is arranged in the iron stand in a penetrating mode, and an electromagnetic adjusting assembly used for adjusting the magnetic conductivity of the iron core is arranged in the iron stand. The adjustable inductor structure can block a magnetic field to form magnetic resistance, so that the position of the magnetic field is changed, and the adjustable inductor structure shows strong flexibility for complex and changeable working conditions. No matter under different load conditions of light load, full load or overload, the high-frequency transformer can accurately match the current load requirement and always maintain a stable operation state by conveniently adjusting the inductance value, so that the application range of the high-frequency transformer is greatly expanded, and the continuity and reliability of power transmission are ensured.

The utility model discloses an inductor capable of improving space utilization rate, which belongs to the technical field of inductors, and particularly structurally comprises a magnetic core, a first end pole piece and a second end pole piece, the first end pole piece and the second end pole piece are of inverted U-shaped structures, and are symmetrically and fixedly connected on the magnetic core front and back to form two magnetic paths; two ends of the first end pole piece and the second end pole piece are respectively exposed out of two side surfaces of the magnetic core, the lower ends of the first end pole piece and the second end pole piece protrude out of the lower surface of the magnetic core to form four pins, and a first groove and a second groove which are symmetrical and parallel front and back are formed in the magnetic core to form a first air gap and a second air gap and are respectively positioned in the middle below the first end pole piece and the second end pole piece. According to the utility model, the inductor is installed in a manner that the pins are suspended, and the longitudinal space at the bottom of the inductor is increased, so that a matched miniaturized product can be placed in the space at the bottom of the inductor, the product density on a PCB (Printed Circuit Board) of a product is reduced, and the space utilization rate on the PCB of the product is improved at the same time.

The invention discloses a phase-shifting transformer and a voltage-phase coordinated regulation and control method and system thereof.Decoupling of a three-phase magnetic circuit is achieved through the structural design of the phase-shifting transformer, control of the voltage-phase coordinated regulation and control system is matched, and the voltage-phase coordinated regulation and control of the phase-shifting transformer is achieved by moving a secondary winding of a B-phase iron core column and a C-phase iron core column on the corresponding iron core column. Flux linkage coupling of the winding and the primary winding is continuously and linearly changed, and continuous and accurate adjustment of the phase difference is achieved; meanwhile, a plurality of voltage regulating taps with tap switches are arranged on the secondary winding of the B-phase iron core column and the high-voltage sub-winding of the C, so that the effective turn ratio of the high-voltage sub-winding is independently changed, and the graded accurate regulation of the amplitude of the output voltage is realized; according to the method, a hierarchical control strategy is utilized, phase adjustment is rapidly completed preferentially, and voltage adjustment is executed after a system judges that a magnetic circuit is stable, so that the stability of each regulation action and the equipment safety are ensured, and the dynamic response speed and the control reliability of the system are greatly improved.