185 results about "Three phase windings" patented technology

The invention discloses a generator stator winding single-phase earth fault positioning method, system and device and a medium, and the method comprises the steps: enabling three phases of a generator stator winding to be connected in series end to end to form a series loop; low-frequency voltage pulses are injected into the three-phase winding, and a fault phase is determined by comparing symmetry damage characteristics of tail-end current by adopting a tail-end current vector analysis method; injecting a low-frequency voltage pulse into the current phase winding, detecting the current difference between the head end and the tail end of each parallel branch, identifying a branch with abnormal leakage current by combining a leakage current characteristic analysis method, and determining a fault branch; establishing a high-frequency distribution parameter model, and performing high-frequency voltage pulse injection positioning for multiple times to obtain three independent high-frequency pulse positioning results; and performing weighted fusion on the three independent high-frequency pulse positioning results, and performing optimization by using an intelligent optimization algorithm to obtain an optimized single-phase earth fault position. According to the invention, the accuracy and rapidity of fault diagnosis and positioning can be improved.

The application provides a method for pulse heating a power battery of an electric vehicle and the electric vehicle. The electric vehicle comprises a plurality of motors and a plurality of three-phase bridge arms. A bridge arm midpoint of each three-phase bridge arm is used for connecting three-phase windings of one motor. Each three-phase bridge arm is used for connecting the power battery through a direct current bus. The control method comprises: controlling each three-phase bridge arm to generate a pulse current on the direct current bus; and adjusting a switching frequency of a switching tube of at least one three-phase bridge arm of the plurality of three-phase bridge arms to reduce a phase difference of the pulse currents generated by the plurality of inverter circuits. The phase value of the pulse current output by the at least one three-phase bridge arm is adjusted, so that the phase difference of the pulse currents generated by the plurality of three-phase bridge arms is reduced, and the heating efficiency of the power battery is improved.

Three-phase windings are wound, with a conductor, around twelve magnetic pole teeth arranged at equal angular intervals on an inner peripheral portion of a stator core configured to constitute a three-phase, twelve-pole stator. The winding of each phase comprises, at least at one location, a portion in which the conductor is drawn out from one of the slots to form a lead-out portion and is then returned to the same slot, and the conductor on both sides of the lead-out portion is fixed within the one slot by the conductor wound around one of the magnetic pole teeth forming the one slot after the lead-out portion has been formed.

The utility model discloses a same-slot and same-phase winding structure, a motor stator and a flat wire motor. The same-slot and same-phase winding structure comprises a three-phase winding, a leading-out end and a neutral end, the single-phase winding is an integral pitch winding and comprises a first branch and a second branch, the first branch and the second branch are alternately distributed in the radial direction and fill the same stator groove, and the two branches comprise U-shaped hairpins with the two ends located at the groove bottom and the groove opening of the stator groove and U-shaped hairpins with the two ends crossing adjacent layers and not located at the groove bottom and the groove opening of the stator groove; the two branch leading-out ends are respectively located at the bottom or the notch of the stator slot, and the radial distances between the two branch leading-out ends and the neutral end are the same. According to the utility model, the single-phase winding is arranged to be a winding structure with the same slot and the same phase, so that the insulation breakdown risk is reduced; the shape of the formed unidirectional winding hairpin is uniform, and the hairpin processing complexity is reduced; the positions of the leading-out ends of the first branch and the second branch of the three-phase winding are concentrated to reduce the use of wrapping insulating materials, so that the manufacturing cost is reduced; the hairpin bending parts are the same, so that the torsion distances of the welding ends are the same, and the welding process complexity is reduced.

Motor for use in a washing machine, comprising: a stator (100), comprising: a core (108) made of magnetically permeable material, comprising an annular ring section (104) having an inner diameter of 120 mm to 250 mm and a radial width (134) of 5 mm to 15 mm, 27 radially extending poles (102) spaced apart around the outer circumference of the annular ring section (104), the poles (102) extending outwards from the annular ring by a distance of 15 mm to 40 mm, three phase windings, each winding comprising a plurality of coils arranged on one third of the pole cores (109), the windings on the pole cores (109) being arranged such that each pole core (109) is assigned only one winding, which is different from the winding assigned to each of two immediately adjacent pole cores (109). is,and the two immediately adjacent pole cores (109) are assigned to different windings, an insulator that insulates the pole cores from the windings, a rotor (36) that is concentric to the stator (100), with a permanent magnet ring (38) outside the stator (100) and rotor poles that point towards the ends of the stator poles (102), wherein the ratio of rotor poles to stator poles (102) is 4:3.

The invention provides a fault-tolerant control method and system for open-phase faults of a four-phase and three-phase permanent magnet synchronous motor, electronic equipment and a storage medium. Belongs to the technical field of motor control. The method is based on a 4DQ decoupling control framework, and an open-phase fault-tolerant control module is additionally arranged between a speed loop and a current loop. When the open-phase fault of the motor is detected, the module firstly identifies the number of sets of faulty windings, cuts off control signals of the faulty sets of windings, then averagely distributes q-axis total reference current output by a speed ring to the remaining healthy three-phase windings again according to the number of the faulty sets, and carries out necessary amplitude limiting processing. And finally, the current loop controller of each healthy winding drives the inverter to work according to the redistributed reference current. According to the invention, the structural advantage of independent isolation of the four-phase and three-phase motor windings is fully utilized, and the torque ripple is effectively suppressed and the stable operation of the motor is maintained through overload or derating operation of a healthy winding under the condition that a single set or multiple sets of windings have faults.

The invention relates to the technical field of high-speed generators, and discloses a double-three-phase fractional-slot winding carbon fiber reinforced high-speed generator and a design method.The double-three-phase fractional-slot winding carbon fiber reinforced high-speed generator comprises a permanent magnet synchronous motor, the permanent magnet synchronous motor adopts a double-three-phase winding surface-mounted topology and fractional-slot distribution winding, and a carbon fiber bundle is arranged on the surface of a rotor; the stator winding adopts a split transposition structure and is internally provided with an oil duct; and the controllable rectification controller adopts a three-phase two-level main power conversion topology and comprises a control circuit of a dual-digital signal processor redundancy architecture, a driving circuit of a multi-level driving architecture and a three-phase full-bridge silicon carbide main power circuit adaptive to a high-voltage multi-level topology. By adopting the dual three-phase fractional slot winding surface-mounted permanent magnet synchronous motor topology and cooperating with the split transposition winding structure, the winding circulation loss is reduced, the fault-tolerant capability is improved, and the rotor is bundled and reinforced by carbon fiber wires to counteract the high-speed rotation centrifugal force.

The invention provides an oil insulation three-phase integrated converter transformer system. The system comprises a converter valve provided with a diode valve, a direct current side outgoing line and a converter transformer valve side outgoing line, and a three-phase three-winding converter transformer provided with three-phase winding structures, and each phase winding structure comprises a network side outgoing line, a valve Y side outgoing line and a valve D side outgoing line; the top of the converter valve oil tank is provided with a direct-current sleeve, and the side wall of the converter valve oil tank is communicated with a converter valve side sleeve; the top of the transformer oil tank is provided with a network side sleeve, and the side wall of the transformer oil tank is communicated with a valve Y side sleeve and a valve D side sleeve; a plurality of converter transformer valve side sleeves are respectively butted and communicated with a plurality of valve Y side sleeves and a plurality of valve D side sleeves; an alternating current side outgoing line is connected with a valve Y side outgoing line and a valve D side outgoing line; and an AC-DC conversion system is formed among the converter valve oil tank, the transformer oil tank, the converter transformer valve side sleeve, the valve Y side sleeve and the valve D side sleeve. Through the current conversion system provided by the invention, the problems of low integration level, large equipment quantity, large size, large occupied area, high cost, complex structure, complex electrical connection and the like of the current conversion system are solved.

The invention discloses an energy storage type phase modifier with a damping structure and a system, and belongs to the technical field of electric power equipment. The brush doubly-fed motor comprises a stator and a rotor. An air gap is formed between the stator and the rotor; three-phase symmetrical windings are arranged in the stator and the rotor; the damping structure is made of an electric conductor material and is arranged along the circumference of the notch of the rotor; the damping structure can be equivalent to a three-phase winding, and in the equivalent three-phase winding of the damping structure, each phase is self-short-circuited. The damping structure optionally comprises at least one of the following structures: a slot wedge made of an electric conductor, a cage bar and an end ring. According to the invention, the energy storage type phase modifier has the capabilities of suppressing the excitation current peak value and improving the short-circuit current on the premise of ensuring the high inertia supporting function, so that an excitation system is effectively protected, and the short-circuit voltage supporting capability of the motor is enhanced.

The invention relates to the technical field of power-assisted bicycles, and discloses a power assembly for a power-assisted bicycle and the power-assisted bicycle. The powertrain includes an epicyclic gear train including a first gear element, a second gear element, and a third gear element; the middle shaft is coupled with a pedal of the power-assisted bicycle; the first motor is coupled with the epicyclic gear train through a first gear element; the second motor and the middle shaft are coupled and connected with the epicyclic gear train through a second gear element; an output crankset coupled with the epicyclic gear train through a third gear element; the detection module is connected with the first motor and used for detecting working electrical parameters of the first motor; the control module is connected with the detection module and the second motor and used for controlling a three-phase winding of the second motor to be short-circuited and increasing the rotation resistance of the second motor under the condition that the working electrical parameters of the first motor are not matched with the preset rotation parameters of the first motor, so that the treading resistance of the pedal is increased, and the purpose of preventing a user from missing steps is achieved. And the riding experience of the rider is improved.

A flat wire motor stator structure disclosed by the present invention comprises a stator iron core and flat wire hairpins inserted into the stator iron core, the plurality of flat wire hairpins are mutually connected to form a three-phase winding of a motor: 54 stator grooves are formed in the inner ring surface of the stator iron core at equal intervals, and six layers of flat wire hairpins are inserted into each stator groove in the radial direction; each phase winding is provided with three parallel branches, the winding sequence of each parallel branch is the same, and each parallel branch is composed of five types of flat wire hairpins. The motor comprises the flat wire motor stator structure. The stator structure of the flat wire motor ensures the slot filling rate of a motor assembly in a limited space, and improves the power density and efficiency of the motor; and only five types of flat wire hairpins are adopted, so that the mold opening cost during production is reduced, and the production time is shortened.

The application provides a stator of a flat wire motor and the flat wire motor, the slot number of each pole and each phase of the stator is 3, the pole number of the stator is an even multiple of 3, the layer number formed by the flat wire stator winding in the winding slot is 2M, M is an even number greater than or equal to 2; the winding comprises a three-phase winding, each phase winding comprises two parallel branches, each branch is formed by a plurality of U-shaped sub-conductors in series; each phase winding comprises a plurality of conductor groups, each conductor group comprises three sub-conductors, and the span is K+1, K and K-1 respectively; each sub-conductor spans two adjacent layers, which are the 2N layer and the 2N-1 layer respectively; the slots occupied by the sub-conductor are in the M layers located on the radial inner side, three continuous inner slots are occupied by each pole and each phase, three continuous outer slots are occupied by each pole and each phase in the M layers located on the radial outer side, and the three inner slots and the three outer slots of each pole and each phase are staggered by one slot position in the circumferential direction. According to the stator structure, the manufacturing cost is low, the harmonic influence is small, and the working performance is good.

The invention discloses an intelligent zipper system, which comprises a zipper tape provided with a plurality of zipper teeth; the zipper head is movably arranged on the zipper tape, and a permanent magnet array is arranged in the zipper head; the driving system comprises a three-phase winding arranged on the sprocket; the position detection system is used for detecting the position of the zipper head in real time; the control unit is used for controlling the power-on state of the three-phase winding, the control unit controls the three-phase winding to generate a moving magnetic field according to a feedback signal of the position detection system, and the permanent magnet array is driven to drive the chain head to move; the power supply system supplies power to the driving system and the control unit; the rectifying device is used for converting direct current into alternating current to generate a magnetic field for the three-phase winding; the system has an electric mode and a power generation mode, and in the electric mode, the chain head is driven to move to achieve automatic opening and closing; in the power generation mode, the chain head is manually pulled to enable the permanent magnet array and the three-phase winding to move relatively to generate induction current, and the induction current is rectified and stabilized to charge the energy storage device or supply power to the load.

The utility model discloses an integral pitch winding stator, which comprises an iron core and a stator winding wound on the iron core, 48 stator slots are arranged on the iron core at intervals, a plurality of wire layers are respectively arranged in each stator slot, the wire layers in each stator slot are sequentially arranged from inside to outside along the radial direction, and the stator winding is a three-phase winding; each phase winding comprises four parallel branches, each branch comprises a first leading-out end and a second leading-out end, the first leading-out ends of the branches in the same phase are respectively connected to different wire layers in the same stator slot, and the second leading-out ends of the branches in the same phase are respectively connected to different wire layers in the same stator slot. And the first leading-out end and the second leading-out end are respectively led out of different stator slots. In the four branches of each phase winding, each first leading-out end is led out from the same stator slot, and each second leading-out end is led out from the same stator slot, so that only two stator slots of each phase are provided with the leading-out ends, the wiring is simple, and the circuit is neat after wiring.

The utility model relates to the field of cooling and ventilation of transformers, in particular to a dry-type transformer. The dry-type transformer is used for solving the problems that a refrigeration fan of an existing dry-type transformer is prone to being damaged, when the refrigeration fan is damaged, the refrigeration fan needs to stop running and be overhauled, and normal running of the dry-type transformer is affected. The dry-type transformer comprises a control system, a bottom foot, a lower clamping piece and a three-phase winding, the lower clamping piece and the three-phase winding are installed on the bottom foot, a ventilation air channel is formed between a high-voltage winding and a low-voltage winding of each phase winding, a first refrigeration fan unit is arranged on the lower clamping piece, an air opening of a refrigeration fan of the first refrigeration fan unit faces the ventilation air channel, and a second refrigeration fan unit is further installed on the bottom foot. The first refrigerating fan unit and the second refrigerating fan unit are both connected with the control system, and the refrigerating fan units serve as backups for each other, so that when one refrigerating fan unit breaks down, the other refrigerating fan unit can work under the control of the control system. And continuous cooling of the transformer is ensured.

Different from a common three-phase alternating-current motor, a motor stator of the triangular connection three-phase alternating-current permanent-magnet brushless motor is formed by stacking silicon steel sheets with barrel-shaped interiors and armature slots and armature teeth for winding, and a three-phase winding on the stator adopts a triangular connection method. The cylindrical permanent magnet rotor is radially provided with the permanent magnets of which the magnetic lines are vertical to the rotating shaft of the motor, so that the motor can be directly used on a three-phase alternating-current power supply without a driver, and can also be subjected to speed regulation through an alternating-current frequency converter, and compared with a traditional three-phase alternating-current motor, the efficiency, power and torque of the motor are improved under the condition of the same specification; and all south and north magnetic poles of the magnetic rotor containing the permanent magnets are driven during driving each time, so that high electric energy driving efficiency and high power density are realized. Energy conservation and emission reduction are achieved in daily industrial power application, and the three-phase alternating current motor has the application prospect of replacing a three-phase alternating current motor which is widely used at present and is of great significance.

The present invention relates to an electric oil pump and, more specifically, to an electric oil pump and an electric device which can measure the temperature of oil by including a temperature sensor unit on a suction flow path connecting an oil suction port and a pump chamber provided in a housing, can implement stable support with respect to a shaft, use winding coils connected for each phase winding coil in a three-phase motor, and minimize a connection route between a controller and a final end of the winding coils to simplify the structure and contribute to cost reduction. The present invention provides an electric oil pump comprising: an oil suction port provided in a housing; a pump chamber provided in the housing; a suction flow path connecting the pump chamber and the suction port; a temperature sensor unit disposed on the suction port or the suction flow path to measure the temperature of oil before flowing into the pump chamber; and a control module including a double journal bearing, a motor connected to a shaft connected to the pump, and a substrate, wherein the motor comprises a rotor and a stator, the stator includes three-phase windings of U-phase, V-phase, and W-phase, the windings of each phase are provided in plurality, the windings of the same phase are connected in series to each other, and a final line of each winding connected in series is connected to the control module, one for each phase.

The invention belongs to the technical field of aviation power generation systems, and discloses an alternating current starting power generation system starting phase sequence online identification method, which comprises the following steps of: 1, providing 28V control electricity and 115V / 400Hz three-phase constant-frequency alternating current for a generator controller; 2, setting a current comparison threshold value, wherein a data acquisition period is as follows; the starting generator controller is used for converting the 115V / 400Hz three-phase constant-frequency alternating current into low-voltage three-phase constant-frequency alternating current; 3, applying the low-voltage three-phase constant-frequency alternating current to a three-phase winding of a main generator stator to generate three-phase current; step 4, collecting three-phase current fed back by a current sensor, and recording the three-phase current as,..., and collecting three-phase current fed back by a motor mutual inductor, and recording the three-phase current as,...; 5, calculating the sum of the three-phase current according to the sum; and 6, calculating the absolute value of the current sum in one current period, solving the average value of the absolute values of continuous N periods, if the average value is smaller than a set threshold value, indicating that the starting phase sequence is correct, otherwise, indicating that the starting phase sequence is wrong.

The utility model relates to an electric driving system and a vehicle. The electric driving system comprises a charging port; the three-phase winding comprises a first-phase winding, a second-phase winding and a third-phase winding; the driving module is provided with a first driving end, a second driving end and a third driving end; wherein a first phase line is connected between the first driving end and the first phase winding, a second phase line is connected between the second driving end and the second phase winding, a third phase line is connected between the third driving end and the third phase winding, and a neutral line is connected between a neutral point of the three-phase winding and the charging port; and the magnetic ring assembly sleeves the first phase line, the second phase line, the third phase line and the neutral line. Therefore, by arranging the magnetic ring assemblies on the first phase line, the second phase line, the third phase line and the neutral line in a sleeving mode, EMC can be effectively restrained, the electric corrosion phenomenon of the bearing is prevented, and meanwhile the working temperature rise of the magnetic ring assemblies is remarkably reduced.

A new energy automobile motor stator winding structure comprises a stator iron core and a stator winding, the stator iron core is provided with a plurality of winding grooves, the number of the winding grooves is at least six times of that of three, a plurality of layers of flat wire conductors used for forming the stator winding are arranged in each winding groove, the flat wire conductors are hairpin coils, the first layer of flat wire conductor is located on the inner circle of the winding, and the second layer of flat wire conductor is located on the outer circle of the winding. The last layer of flat wire conductor is located on the outer circle of the winding, the stator winding comprises a U-phase winding, a V-phase winding and a W-phase winding, each pole of each phase winding occupies three winding grooves, each phase winding comprises a plurality of coil groups, each coil group comprises two span structures, the three pitches of the first span structure are eight grooves, eight grooves and adjacent layer span combination of the eight grooves, and the three pitches of the second span structure are eight grooves. Three pitches of the second span structures are adjacent layer span combinations of 6 slots, 8 slots and 10 slots, the number of the first span structures and the number of the second span structures in each coil group are even numbers, and the sum of the number of the first span structures and the number of the second span structures in each coil group is equal to the number of poles of a motor stator.

The invention relates to the technical field of motors, in particular to a two-pole magnetic suspension permanent magnet high-speed winding structure which comprises a stator core and three-phase windings, a plurality of stator grooves are annularly formed in the inner surface of the stator core at equal intervals with the axis of the stator core as the center, the stator grooves are equally distributed in two poles, the number of the three-phase windings is multiple, and the number of the three-phase windings is multiple. Each phase winding is wound in a stator slot, 12 layers of windings are arranged in each stator slot, two branches of each phase winding are canceled, the other four branches are connected in parallel, and the current directions of the four branches connected in parallel are the same. According to the technical scheme, uniform magnetic field distribution can be kept while the motor operates efficiently, and good mechanical stability and thermal management performance are provided.

The invention belongs to the field of permanent magnet synchronous generators, and relates to a permanent magnet synchronous motor topological structure and a wide variable speed power generation method. The topological structure of the permanent magnet synchronous motor comprises three-phase windings, three winding switching devices, a three-phase uncontrolled rectifier bridge and a DC-DC converter, each winding in the three-phase windings is divided into two sub-windings which are connected in series, the negative ends of the three-phase windings are connected to serve as neutral points, one end of each winding switching device is connected with one bridge arm of the three-phase uncontrolled rectifier bridge, and the other end of each winding switching device is connected with the other bridge arm of the three-phase uncontrolled rectifier bridge. The other end of each winding switching device is connected with the positive end of the first sub-winding or the positive end of the second sub-winding of the corresponding phase, the output end of the three-phase uncontrolled rectifier bridge is connected with the input end of the DC-DC converter, and the output end of the DC-DC converter serves as output.

The present application belongs to the technical field of power supply for large-capacity high-frequency transformer testing, and particularly relates to an energy feedback large-capacity high-frequency transformer testing power supply topology and control method, aiming to solve the problem of resource waste caused by large power consumption in the temperature field testing of large-capacity high-frequency transformers in the prior art. The present application comprises: a three-phase multi-winding transformer, including one primary three-phase winding and M+N secondary three-phase windings; M+N AC / AC modules corresponding to the secondary three-phase windings; a first resonant capacitor connected in series between the first AC / AC module and the high-voltage side of the large-capacity high-frequency transformer to be tested; a second resonant capacitor connected in series between the M+1th AC / AC module and the low-voltage side of the large-capacity high-frequency transformer to be tested; and a first bypass switch and a second bypass switch connected in parallel with the first resonant capacitor and the second resonant capacitor, respectively. The present application saves electric energy and occupies less resources, has a modular structure, a wide test voltage range, a low rated voltage of a single module, and strong reconfigurability.

The application relates to the field of wind power generation technology and provides a permanent magnet synchronous generator and a high-altitude wind power generation system.The permanent magnet synchronous generator comprises a rotor and a stator; the rotor is provided with permanent magnets; the stator is coaxially sleeved outside the rotor and comprises a plurality of stator modules; the plurality of stator modules are arranged along the circumference of the rotor; each stator module constitutes an independent three-phase power generation unit and has an independent neutral point; the stator module comprises a shell, a stator core and three-phase windings; the stator core is connected with the shell; the stator core is formed with a plurality of installation grooves which are arranged at intervals along the circumference of the rotor; and the three-phase windings are installed in the installation grooves; the three-phase windings of each stator module adopt a single-layer concentrated winding structure; each phase winding in the three-phase windings is contained in two adjacent installation grooves in the stator module; and only the winding of a single phase is contained in each installation groove. The application reduces the weight of the permanent magnet synchronous generator, thereby realizing long-time stable power generation.

A rotary machine control device (10) is capable of driving a multiphase rotary machine (800) and a DC rotary machine (710, 720) in which a first terminal (T1) is connected to a phase current path of a three-phase winding group (801). A control section (30) operates the actions of inverter switching elements (IU1H / L, IV1H / L, IW1H / L) and DC rotary machine switching elements (MU1H / L, MU2H / L) in the "driving circuit of the multiphase rotary machine (800) and the DC rotary machine (710, 720)". The control section (30) has an abnormality detection section (40, 50) that detects an abnormality of the multiphase power converter (601, 602) or the multiphase rotary machine (800), or detects an abnormality of the DC rotary machine switching elements (MU1H / L, MU2H / L) or the DC rotary machine (710, 720). The control section (30) changes the switching actions of the inverter switching elements and the DC rotary machine switching elements according to the abnormality.

The application discloses a stator structure and a motor, and relates to the technical field of motor equipment, wherein the stator structure comprises a plurality of stator modules, the plurality of stator modules are detachably spliced into a whole circle in a circumferential direction, and the stator module comprises a stator core and a three-phase winding; the stator core is provided with at least N stator slots, N is greater than or equal to 6, and N is a multiple of 3; the three-phase winding is a single-layer whole-pitch winding, and each phase winding is arranged in two stator slots. The scheme can realize the quick disassembly function of the stator structure.

The application provides an electromagnetic rotary energy harvesting device and method based on a double-layer Halbach array, which comprises coaxially arranged rotor and stator assemblies, the rotor assembly is fixed to the shaft end of a rotating machine and rotates synchronously with the shaft end of the rotating machine, the coils of the annular coil assembly are symmetrically distributed according to a three-phase winding and are connected in Y shape, the magnet housing of the stator assembly is provided with magnets and counterweights, the magnets comprise inner and outer ring magnets, the double-layer concentric cylindrical Halbach array is formed by the inner and outer ring magnets, the inner and outer ring magnets are arranged in the coil assembly and are magnetized in a radially staggered manner, the counterweights balance the electromagnetic torque by gravity torque, and the relative rotation of the rotor and stator assemblies is ensured. The double-layer Halbach array is used to concentrate the magnetism of the magnets to the middle annular air gap area, the kinetic energy-electric energy conversion is realized by combining electromagnetic induction, the magnetic stabilization and voltage stabilization are realized by adjusting the arrangement angle of the magnets, and the relative movement of the magnets and the coils is realized without additional fixation of the magnets of the stator assembly by relying on the single pendulum structure of the counterweights.

The five-phase permanent magnet synchronous motor open-circuit fault three times harmonic current injection fault-tolerant control strategy belongs to the motor field, and aims to solve the problem of torque fluctuation rising of the five-phase permanent magnet synchronous motor under winding open-circuit fault. The strategy includes the following aspects: adjusting the residual phase current to suppress the torque fluctuation rising caused by the winding open-circuit fault, and the residual phase current is determined according to the fault-tolerant control current; the obtaining process of the residual phase winding fault-tolerant control current is as follows: the relationship between the output torque and the residual phase winding fault-tolerant control current of the motor under the fault-tolerant state of the winding open-circuit fault is established according to the no-load back electromotive force, and then the relationship between the constant torque component of the output torque, the second torque fluctuation amplitude and the fourth torque fluctuation amplitude and the residual phase winding fault-tolerant control current is established; the multi-objective particle swarm algorithm is used for solving to obtain the fault-tolerant control current under the condition of maximizing the constant torque component and minimizing the sum of the second and fourth torque fluctuation amplitudes.

The embodiment of the invention relates to the technical field of superconducting magnetic energy storage, and discloses a topological structure of a converter, a control method, equipment and a storage medium, and the topological structure is characterized in that a primary side winding of a transformer is connected to a power grid, a secondary side of the transformer is provided with a plurality of three-phase windings, and each three-phase winding is connected with an alternating current side of an inverter module group; the direct current sides of the plurality of inverter modules in each inverter module group are connected in parallel to form a direct current bus; the chopper module group is connected with one group of energy storage units in the superconducting energy storage system, and a plurality of chopper modules in the chopper module group are sequentially connected in series. According to the scheme, the inverter modules are connected in parallel, the current level can be improved by increasing the number of the parallel modules, the chopper modules are connected in series, the voltage level can be improved by increasing the number of the chopper modules connected in series, and the converter which can flexibly expand the power level to adapt to the high-power superconducting energy storage system is constructed.