331 results about "Dynamo" patented technology

The invention relates to the technical field of electrical monitoring, provides a general generator electrical monitoring system with a fault self-diagnosis function, and aims to deeply excavate potential correlation between electrical and mechanical parameters by judging a coherence coefficient and a phase difference between a current harmonic component and a bearing vibration frequency band and marking a fault coupling identifier by using a coupling mode library. Electrical and mechanical coupling faults can be accurately identified, and the identification capability of complex faults can be greatly improved; meanwhile, the diagnosis threshold is dynamically adjusted in combination with the load rate and the winding temperature, so that the system can better adapt to different operation conditions of the generator, and the diagnosis accuracy and reliability are improved; the fault causal chain is analyzed through the causal inference algorithm, and the fault source is positioned, so that compared with the existing fault tracing mode lacking systematicness, the fault generation reason and process can be analyzed more comprehensively and deeply, the fault source can be positioned quickly and accurately, operation and maintenance personnel can take targeted measures in time, and the fault tracing efficiency is improved. And the operation safety and reliability of the generator are improved.

The embodiment of the invention discloses a multiplex type three-stage starting power generation controller, and relates to the technical field of aviation three-stage starting power generators. In the starting stage, an H-bridge inverter in the starting power generation controller provides single-phase alternating-current exciting current for a main exciter stator exciting winding through SPWM modulation so as to establish a pulsating magnetic field to provide exciting current for a main motor, and a three-phase full-bridge inverter provides armature current for a main motor stator armature winding through SVPWM modulation. In a power generation stage, an anti-parallel diode of the three-phase full-bridge inverter is used as a rectification circuit of the auxiliary exciter, and the H-bridge inverter adopts a PWM chopping mode to operate as an asymmetric half-bridge circuit. A power generation controller and a starting controller are integrated into a whole, and by changing the modulation mode of a hardware circuit, the control function of the three-stage starting generator at different stages can be realized by only one controller, so that the structure of the starting power generation controller is simplified, the system integration degree of the three-stage starting generator is improved, and the volume and the weight of the system are reduced.

The invention provides a network construction type converter control method suitable for multiple power grid intensities, and belongs to the field of new energy grid-connected stability. The method comprises the steps that the actual output power of an inverter is calculated according to inverter side capacitor voltage and grid-connected current; the actual output power of the inverter and the power reference value control an output internal potential amplitude reference value and an internal potential phase angle through the virtual synchronous generator; subtracting the voltage drop of the grid-connected current on the virtual impedance from the internal potential amplitude reference value to obtain a virtual internal potential; inputting the virtual internal potential as a reference voltage into a voltage and current double-loop controller, inputting a grid-connected current into a proportional differential controller, subtracting the output of the proportional differential controller from the output of the voltage and current double-loop controller, inputting an obtained result into an inverter through an SPWM modulator, and controlling the inverter; the invention also provides a control system of the network-forming converter. Grid-connected current proportional differential feedback is introduced, the inner loop control bandwidth is kept constant in the dynamic change process of the power grid strength, and power-voltage loop harmful coupling is eliminated.

The invention relates to a composite function converter suitable for a multi-phase high-speed permanent magnet direct-current generator. An uncontrolled rectifier bridge arm is formed by connecting two high-frequency rectifier diodes in series; the controllable rectifier bridge arm is formed by connecting two IGBTs (Insulated Gate Bipolar Translator) with antiparallel diodes in series; an upper tube IGBT collector of the controllable rectifier bridge arm and a cathode of an upper tube diode of the uncontrolled rectifier bridge arm are connected in parallel with an anode of the intermediate bus capacitor; the emitting electrode of the lower tube IGBT and the anode of the lower tube diode of the uncontrolled rectifier bridge arm are connected in parallel with the cathode of the intermediate bus capacitor; the emitting electrodes of the upper tubes IGBT of the controllable rectifier bridge arms are respectively connected to the output end of the generator; the anodes of the upper diodes of the uncontrolled rectifier bridge arms are respectively connected to the other output ends of the generator; the interleaved BUCK module is connected between the intermediate DC bus capacitor and the load, and the BUCK control unit is used for controlling the interleaved BUCK module to operate; and the barring control unit is used for controlling the controllable rectifier bridge arm to realize a generator barring function.

The invention discloses a control starting system of a hybrid mower. Relates to the field of generators and solves the problem that an existing mower is highly dependent on a storage battery. The generator is started through a pull disc, the output end of a charging coil of the generator is connected with a generator rectification module, alternating current is converted into direct current, then the direct current is transmitted to a power supply DC-DC conversion module, and the direct current is supplied to a single-chip microcomputer and a driving execution unit through voltage stabilization processing and charges a storage battery. The auxiliary power supply module receives the rectified direct current and converts the rectified direct current into multi-level stable low-voltage power to meet various peripheral requirements; the generator rotating speed acquisition module acquires and converts rotating speed signals and provides data support for single-chip microcomputer control. When the storage battery is normal, the system can be started to operate, the power supply DC-DC conversion module replaces a traditional rectifier to charge the storage battery, and continuous operation is guaranteed; and when the storage battery is lack of electricity or damaged, after the pull disc starts the generator, the rectification module, the DC-DC conversion module and the auxiliary power supply module work cooperatively, so that operation interruption is avoided, and the emergency operation capability is improved.

The invention discloses a thermal power generation ribbed cooling tower parameterization layered mold matching method based on Dynamo, and belongs to the technical field of building construction. The technical problems that in the prior art, when mold matching design is conducted on the ribbed cooling tower, efficiency is low, and precision is difficult to guarantee are solved. Comprising the following steps: acquiring geometric, rib and layering parameters of the cooling tower, and automatically generating an accurate three-dimensional entity model of the ribbed cooling tower in a BIM software environment; performing horizontal cutting on the model according to the construction layer lifting height to obtain a plurality of layered entities; for any layered entity, integrally generating an outer template and a rib template which are completely attached to the outer surface of the layered entity and the surface of the rib part; finally, the whole-ring formwork is divided into standardized formwork units in the circumferential direction, and attribute information such as the position and the size is given to each unit so that formwork matching data capable of directly guiding construction can be generated. Full-process automation and high precision of complex curved surface structure mold matching design are achieved, and the design and construction cooperation efficiency is remarkably improved.

The invention relates to the technical field of electrical variable measurement, in particular to an analysis system for generator parallel operation impact data, which comprises a transient signal acquisition module for synchronously monitoring an ampere value of an impact current and a volt value of an impact voltage during generator parallel operation, obtaining an instantaneous reading of a transient electrical signal, and acquiring a transient signal; and the reading is converted into a digital sequence, and a multi-channel transient electrical signal value is recorded to form an original electrical measurement data set. According to the method, the ampere value of the impulse current and the volt value of the impulse voltage are synchronously monitored in the generator parallel operation period, the instantaneous reading of the transient electric signal is obtained and converted into the digital sequence, a high-precision data foundation is laid for subsequent analysis, and the analysis time period of the impulse event is further set based on the original electrical measurement data set; and carrying out synchronous alignment and effective data segment interception on the current and voltage numerical value sequences according to timestamps, and constructing a structured time domain impact data sequence group.

The invention belongs to the technical field of inductor and generator manufacturing, and particularly relates to a self-resonance coil winding method and a low-reluctance generator coil winding. A same-direction lamination winding method is adopted, a wire is fixed at a starting point, N turns are wound to form a first layer of a coil, then the first layer of the coil is attached, M turns are wound in the same direction, the first layer is overlapped, a second layer of the coil is formed, then the second layer of the coil is attached, X turns are wound in the same direction, the second layer is overlapped, and the third layer of the coil is formed. And winding the fourth layer, the fifth layer to the Yth layer according to the same rule. The layers of the finished coil are connected in series and are stacked into a whole layer by layer. By improving the winding method of the coil, the magnetic poles of the generator generate magnetoelectric energy standing waves and voltage and current phase shifts, so that the magnetic resistance of the stator magnetic poles of the generator to the rotation of the rotor is reduced, and the efficiency of converting mechanical energy into electric energy of the generator is greatly improved.

This utility model relates to the field of generator set maintenance technology, and in particular to a generator set fault location circuit. A voltage acquisition element measures and collects voltage waveform signals from the generator terminals and the low-voltage side of the main transformer; a current acquisition element measures and collects the zero-sequence currents from the generator terminals, the high-voltage side of the excitation transformer, the low-voltage side of the main transformer, and the high-voltage side of the high-voltage transformer; the fault location element transmits data through a signal transmission interface connected to the terminals of the current acquisition element. This system can accurately determine the location of a single-phase ground fault, narrowing the fault location range and improving maintenance efficiency. The optical current transformer is unaffected by conductor spatial arrangement and magnetic field imbalance, accurately measuring zero-sequence current with a wide measurement range and no saturation problem. The insulating frame of the primary sensing unit can be designed according to the size and arrangement of the three-phase conductors being measured in the protected generator set, without strict requirements on conductor shape, size, and arrangement, facilitating installation and maintenance.

The utility model discloses a sewage-proof alternating-current generator with high air inlet rate, which comprises a protective cover, an adjuster, a protective plug, a dustproof pad, a sealing ring, a rectifier bridge rear cover assembly, a stator assembly, a rotor assembly, a front end cover, a belt pulley and an adjusting washer, a plurality of raised air guide windows are formed on the top surface of the protective cover, the air inlets of the air guide windows are arranged downwards, and the air inlets of the air guide windows are arranged downwards. The beneficial effects of the utility model lie in that on the premise of not changing the generator, through the structural design of the shutter-type air guide windows on the protective cover, the air inlet amount of the motor is increased, the heat dissipation effect of the motor is enhanced, the temperature rise of the motor is reduced, and the service life of the motor is prolonged. Meanwhile, compared with a traditional structure that air holes are directly formed in the plane of the protective cover, mud oil water obliquely above the motor mounting direction can be effectively prevented from invading and flowing into the protective cover, and the product quality is improved.

The invention relates to the field of electrical engineering. A multi-pole, multi-phase generator-motor comprises a fixed magnetic core (stator), a movable magnetic core (rotor), a magnet and a winding. The fixed magnetic core contains a base element which consists of a magnet with a magnetizing winding and with generating windings arranged on two sides of the magnet such as to provide for opposite magnetic flux reversals in the combined power winding when the movable magnetic core is moving. The magnetizing winding is fed by the power windings via a rectifier. The number of base elements is a multiple of 6 or 12. The base elements are offset from one another by an angle β = Т+ΔТ and are arranged uniformly at the vertices of regular polygons, where T is a period determined by the angular size of a tooth and a space of the rotor, and ΔТ is the same dimension divided by the number of phases required by the consumer. All of the power windings of the base elements are connected in series. The technical result is that of providing a multi-phase alternating voltage to the end consumer.

The invention relates to an aerosol delivery device. An aerosol delivery device may include an atomizer, a reservoir configured to contain an aerosol precursor composition, and a circuit coupled to the atomizer. The circuit may include a generator assembly including a movable input member and a generator configured to generate an electrical current from movement of the movable input member. The circuitry may be configured to direct an electrical current to the atomizer to generate an aerosol from the aerosol precursor composition. The invention also provides a related aerosol production method.

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 present invention aims at providing an iron-nitrogen-based soft magnetic steel sheet having a saturation magnetic flux density higher than that of pure iron, a method for manufacturing the soft magnetic steel sheet, and a core and a dynamo-electric machine in which the soft magnetic steel sheet is used. The soft magnetic steel sheet according to the present invention includes C, N, and the balance of Fe and inevitable impurities and is comprised of an α phase, an α′ phase, an α″ phase, and a γ phase. The α phase serves as a main phase, a volume ratio of the α″ phase is 10% or more, and a volume ratio of the γ phase is 5% or less. The core according to the present invention includes a laminated body of the soft magnetic steel sheets.

The invention discloses a cover structure with an electronic component, and belongs to the technical field of mechanical and electronic combined protection structures, the key point of the technical scheme is that the cover structure comprises a cover body, a first capacitor and a second capacitor, the cover body is provided with a socket for charging and discharging, a circuit assembly is embedded in the cover body, and the circuit assembly comprises a first circuit and a second circuit. The first circuit is arranged at the socket, the first capacitor and the second capacitor are fixedly connected with the cover body through the mounting assembly, the first capacitor and the second capacitor are arranged in parallel, the capacitance value of the first capacitor is larger than that of the second capacitor, a first pin of the first capacitor is connected with the first circuit, and a second pin of the first capacitor is connected with the second circuit. A first pin of the second capacitor is connected with the first line, a second pin of the second capacitor is connected with the second line, the cover body is provided with a plurality of communication grooves for connecting the first capacitor and the second capacitor with the line assembly, and the effect of improving the performance and reliability of the generator cover structure is achieved.

The invention provides a method for improving PT residual voltage frequency measurement accuracy based on rotation vector characteristics, and relates to the technical field of generator set rotation speed measurement. The method comprises the following steps: acquiring a three-phase voltage alternating current signal through a generator end PT; processing the three-phase voltage signal to obtain projections of a voltage rotation vector on alpha and beta static coordinate axes; frequency characteristics are extracted based on projection and voltage amplitude and can be realized through direct calculation or a phase locking link; performing low-pass filtering on the frequency characteristic direct current quantity; a generator speed is calculated based on the filtered frequency and provided to a governor. According to the method, the limitation that a traditional PT residual voltage method only depends on zero crossing point information is broken through, frequency characteristics are extracted through a complete voltage sequence, alternating current signal filtering distortion is avoided through direct current filtering, high measurement precision and high anti-interference capacity can still be kept under the low-speed working condition, the problems that an existing speed measurement method is insufficient in precision and weak in anti-interference capacity are effectively solved, and the method is suitable for popularization and application. And reliable guarantee is provided for safe and stable operation of a unit.

The invention belongs to the field of fault protection of a high-voltage direct-current generator controller, and particularly relates to a software design method for excitation positive short circuit of a generator controller, which comprises the following steps of: setting excitation protection conditions, and when the frequency of a permanent magnet machine is greater than or equal to a network casting rotating speed, a voting unloading signal is network casting permission and a control command of a main contactor is switched on; when the excitation protection condition is met, an excitation over-ground short circuit fault protection mark is set, excitation is removed, and the main contactor is switched off; when it is detected that the excitation positive voltage is normal for a first continuous number of times, eliminating the excitation positive voltage abnormal count and the excitation over-ground short circuit fault mark; and if the frequency of one beat of the permanent magnet machine is smaller than the network casting rotating speed or the voting unloading signal is unloading or the main contactor control command is disconnection, clearing the excitation positive voltage abnormal count, the excitation positive voltage jump count and the excitation over-ground short circuit fault mark. And the continuous short circuit or intermittent short circuit fault of the excitation positive voltage can be accurately identified.

The invention relates to the technical field of power supply, and discloses an alternating current doubling device and engineering machinery, and the alternating current doubling device comprises a generator interface; an AC pile interface; a charging output interface; the first power supply line is connected with the generator interface and the charging output interface; the second power supply line is connected with the alternating current pile interface and the charging output interface; the interlocking structure is respectively connected with the first power supply circuit and the second power supply circuit; and the interlocking structure is used for controlling one of the first power supply circuit and the second power supply circuit to be switched on and controlling the other power supply circuit to be switched off. By constructing the first power supply line and the second power supply line, the scene limitation of a single energy compensation mode is broken, and the problem of energy compensation when no charging facility exists in a remote area is solved. Meanwhile, the interlocking structure forcibly controls the two power supply lines, one power supply line is switched on, the other power supply line is switched off, and the electric shock risk caused when one power supply line is powered on and the other power supply line is electrified is eliminated.

The utility model relates to the technical field of alternating-current generator structures, in particular to an alternating-current generator structure which comprises a machine core, a front end cover and a rear end cover, the front end cover and the rear end cover are spliced in a front-back mode and arranged on the periphery of the machine core in a wrapping and sleeving mode, and a front protective cover close to the front side of the front end cover is installed and connected on the peripheral side face, close to the outer side, of the front end cover. A rear protective cover close to the rear side of the rear end cover is installed and connected to the peripheral side face of the rear end cover, and the front protective cover comprises a fan-shaped front plane protective plate perpendicular to the axial direction of the generator and an arc-shaped front curved surface protective plate integrally connected to the rear side edge of the front plane protective plate. The rear protective cover comprises a fan-ring-shaped rear plane protective plate perpendicular to the axial direction of the generator and an arc-shaped rear curved surface protective plate integrally connected to the front side edge of the rear plane protective plate, the bending direction of the front curved surface protective plate and the bending direction of the rear curved surface protective plate are consistent with the circumferential direction of the generator, heat dissipation is good, and use is flexible.

A method for setting out reserved holes in curtain grouting stop walls based on Dynamo, relating to the field of building construction technology. The method includes: extracting the coordinates and corresponding diameters of the borehole opening and bottom from borehole design data; connecting the coordinates to generate the borehole axis, and transforming the initial contour constructed based on the diameter to the normal coordinate system at both ends of the axis; fusing the contours at both ends along the axis to generate a three-dimensional variable-diameter grouting hole model; extending the stop wall contour according to a preset thickness to generate a three-dimensional stop wall model; performing Boolean difference operations on the two models to remove overlapping parts, obtaining a layout model of irregular holes; extracting the inner and outer double boundary lines generated by the oblique intersection of the hole and the thick wall surface as spatial intersection lines; reducing the dimension of the intersection line to a two-dimensional plane to generate spline curves, and outputting the hole location layout diagram. Implementing the technical solution provided in this application improves the accuracy of grouting hole location layout while ensuring construction efficiency.

The invention discloses a multifunctional tester for electric power new energy electrical equipment, and relates to the technical field of new energy electrical multifunctional tests. The multifunctional tester for the electric power new energy electrical equipment comprises a tester main body, a protective shell and a protective cover, the upper surface of the tester main body is fixedly connected with a direct-current voltage measurement digital display meter, a direct-current measurement digital display meter, an alternating-current voltage measurement digital display meter, an alternating-current measurement digital display meter, a power supply display lamp, a working position display lamp, a zero position display lamp and an alternating-current and direct-current conversion switch, and the interior of the tester main body is fixedly connected with an isolation voltage regulator. The top of the isolation voltage regulator is provided with an adjusting knob, the upper surface of the tester main body is provided with a power jack and a wiring hole, and the inner surface of the protection housing is fixedly connected with a first elastic plate and a second elastic plate, thereby solving the blank field of no test instrument for the AC impedance of the wind driven generator rotor, and enabling the test work difficulty of a new energy station to be simplified.

The invention provides a Kelvin drip generator corona discharge enhancement-based friction nanometer generator and a preparation method thereof. Wherein the generator comprises a Kelvin water dripping machine, high voltages at two ends of the Kelvin water dripping machine are respectively coupled to a back gate electrode and a suspension needle, a non-uniform electric field is constructed in a needle tip-FEP area, corona discharge is triggered, charges are directionally injected into an FEP / liquid drop system, and the FEP / liquid drop system is charged. The injected charges are connected in parallel into the device through a multi-branch capacitor network formed by the back gate electrode, the upper electrode / the lower electrode and the FEP. According to the invention, through cooperation of exogenous pumping and liquid drop charge shuttling (DSG), single-drop transfer charge and open-circuit voltage are significantly improved, and direct-current stepped accumulative output is maintained.

The utility model discloses a wire bar and generator stator with temperature measurement function, aims at solving the temperature sensor in traditional wire bar structure, cannot directly measure the temperature of wire bar conductor, there is temperature measurement result misalignment, temperature measurement efficiency is low and cannot realize the overheating early warning of generator stator's problem. The wire bar body and temperature sensor of the utility model, the wire bar body includes conductor and insulating layer, and the insulating layer is sleeved on the conductor, and the temperature sensor includes temperature sensing probe and signal transmission part, and temperature sensing probe is connected with signal transmission part, temperature sensing probe is connected with the conductor, and the insulating layer is connected with temperature sensing probe, and signal transmission part sets up between the insulating layer and the conductor and leads out from one end of the insulating layer. Through temperature sensing probe and conductor direct connection, make temperature sensor can directly monitor the temperature condition of conductor, avoid the thermal resistance delay of indirect temperature measurement, ensure the accuracy and timeliness of temperature monitoring, improve the efficiency of temperature monitoring.

The present application relates to wave energy power generation technical field, provide a kind of oscillating water column wave energy conversion system based on magneto-hydrodynamic power generation, at least includes: float, including sealed end and open end, open end is suitable for extending into water body, to make the region between water surface and sealed end in the interior of float form air chamber, air chamber has with the gas passage of outside communication, air chamber is provided with magnetic field;Oscillating space is arranged in air chamber, and can be deformed;Oscillating space is filled with liquid metal, and oscillating space is suitable for deforming to make liquid metal flow cutting magnetic field to generate current when being impacted by airflow.The conversion system, oscillating space can be deformed to make liquid metal flow cutting magnetic field to generate current when being impacted by airflow upward or downward.Compared with traditional rotary turbine generator, without setting one-way valve rectification system, structure is more simple, more easily maintained, cost is lower, it is conducive to wide range of popularization and use.

The application provides a fault identification method and device of an excitation system based on phase voltage and phase current, and relates to the field of power systems. According to a cycle integral algorithm, three-phase phase current instantaneous values of a three-phase alternating current side current transformer of a small current test platform of a generator excitation system, three-phase phase voltage instantaneous values of a low voltage side of a synchronous transformer and rectifier output voltage instantaneous values are calculated to obtain three-phase phase current effective values, three-phase phase voltage effective values and rectifier output voltage effective values. An average value of the three-phase phase voltage effective values and the rectifier output voltage effective values are used to obtain a measured thyristor trigger angle during an open-loop load test. If a difference between the measured thyristor trigger angle and a given thyristor trigger angle is greater than a first preset threshold value, a fault phase is determined according to a first constraint relationship corresponding to the three-phase phase current effective values and a second constraint relationship corresponding to the three-phase phase voltage effective values after the thyristor is closed. The application has stronger anti-interference capability and strong engineering applicability.

This invention proposes a tunnel segment layout method based on Revit and Dynamo. First, a family of ring-shaped segments is created in Revit based on the tunnel design drawings, and the positioning plane is determined using adaptive points. Next, the 3D tunnel design route in CAD format is imported as a layout reference. In Dynamo, the 3D design route is imported and its geometric information is extracted. Then, the number of rings and spacing points of the segments are calculated using nodes. The positioning center and rotation angle of the segments are determined using nodes. Finally, the segments are automatically generated and laid out, the Dynamo script is run for layout, and the final effect is checked for necessary optimization. This invention improves layout accuracy and construction efficiency. Automatic calculation and adjustment of the segment positions, spacing, and angles ensure precise matching of the segments with the design path, reducing construction errors.

An induction generator (2) is configured for driving an induction circuit (4), in particular for driving an induction coil of an induction hob (30). The induction generator (2) comprises: a power supply unit (8) configured to provide an input voltage (Vi) with respect to a common voltage (Vc); a driving unit (10) configured to provide a first and a second transistor driving voltage (Vg1, Vg2); a half-bridge arrangement (12) comprising a first transistor and a second transistor (14, 16) connected to each other at a middle node (22), wherein the first and second transistors (14, 16) are connected between the input voltage (Vi) and the common voltage (Vc), wherein the first transistor driving voltage (Vg1) is applied to the gate of the first transistor (14), and wherein the second transistor driving voltage (Vg2) is applied to the gate of the second transistor (16); a resonance circuit (4) comprising an induction coil element (6) being electrically connected at one end to the middle node (22) and being configured to emit an electromagnetic field when in operation; a control unit (20) having an output configured to supply a control signal to the driving unit (10) and having an input electrically connected to the middle node (22) configured for sensing the middle voltage (Vm) at the middle node. The control unit (20) is configured to apply the control signal at a setpoint frequency to the driving unit (10) such that via the first and second transistor driving voltages (Vg1, Vg2) a temporal switching sequence is implemented where the first transistor (14) is switched on and off and the second transistor (16) is switched on and off with a delay period (To) between switching off the first transistor (14) and switching on the second transistor (16). The control unit is further configured to detect the middle voltage (Vm) and / or the complimentary middle voltage (Vm*); and to evaluate the amplitude of the middle voltage (Vm) or the temporal behavior of the middle voltage (Vm) in relation to the switching off of the first transistor (14) and / or in relation to the switching on of the second transistor (16), and / or to evaluate the amplitude of the complimentary middle voltage (Vm*) or the temporal behavior of the complimentary middle voltage (Vm*) in relation to the switching off of the second transistor (16) and / or in relation to the switching on of the first transistor (14). The control unit is further configured to increase or to decrease or to maintain the setpoint frequency of the switching sequence being applied via the control signal in dependency of the evaluation. Alternatively or additionally the control unit is further configured to increase or to decrease or to maintain an on-time ratio (Ta / Tb or Tb / Ta), where within a switching sequence Ta is the duration of switching on the first transistor (14) and Tb is the duration of switching on the second transistor (16).

This invention relates to a dual-loop converter for a linear-rotating switched reluctance generator and its control method. The drain of the positive switching transistor of each phase of the rotating generator unit is connected to a first positive circuit, and the source of the negative switching transistor of each phase of the rotating generator unit is connected to a first negative circuit. One end of a load resistor is connected to a first load circuit and a second load circuit connected in parallel, and the other end of the load resistor is connected to a third load circuit and a fourth load circuit connected in parallel. The cathode of the diode of each phase of the rotating generator unit is connected to the first load circuit, and the positive terminal of the winding of each phase of the rotating generator unit is directly connected to the third load circuit. The cathode of the diode of each phase of the DC generator unit is connected to the second load circuit, and the positive terminal of each phase of the DC generator unit is directly connected to the fourth load circuit. This invention solves the technical problems of existing converters using a large number of components and having high line current pressure.

The utility model relates to the field of insulation protection, and particularly discloses a sealing structure of a winding motor rotor winding outgoing line, which comprises an elastic sheath tube, the sheath tube comprises a vertical unit and a horizontal unit, and the horizontal unit is integrally formed at the upper part of the vertical unit; the vertical unit comprises an insulating tube coating part, a fastening bolt coating part and a conductive screw coating part, the fastening bolt coating part is integrally formed on the insulating tube coating part, the fastening bolt coating part is step-shaped, the conductive screw coating part is integrally formed on the fastening bolt coating part, and the conductive screw coating part is step-shaped; the horizontal unit is located on the side face of the fastening bolt wrapping part. The utility model aims to solve the technical problem of how to seal and insulate.