886 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 invention relates to the technical field of photovoltaic grid connection, and particularly provides an active support control method and an active support control device for transient voltage of a transmitting end power grid of an LCC-HVDC (line commutated converter high voltage direct current power transmission) system, and the active support control method and the active support control device for the transient voltage of the transmitting end power grid of the LCC-HVDC system. Comprising the following steps: correcting an output voltage phase of a synchronization link in a virtual synchronous generator control strategy based on active power and frequency output by a network construction type photovoltaic converter, and correcting an output voltage amplitude of a voltage amplitude link in the virtual synchronous generator control strategy based on a measured value of a sending end power grid voltage; and using the virtual synchronous generator control strategy to control the network construction type photovoltaic current converter in the LCC-HVDC system containing the network construction type photovoltaic current converter. According to the technical scheme provided by the invention, the stability of photovoltaic access to the weak power grid can be improved, and the reactive power output by the converter can be automatically adjusted after the transient voltage of the sending-end power grid occurs due to the commutation failure of the LCC-HVDC system, so that the transient voltage is effectively supported, and the phenomenon of reverse adjustment of the reactive power is prevented.

The invention relates to a cleaning basket and a cleaning machine having the cleaning basket. The cleaning basket is provided with a spray arm, a first impeller, a first magnetic part, a second magnetic part, a generator, an AC / DC conversion module and an electrolysis module. The cleaning basket is convenient to be combined with a water tank to form a cleaning machine. When in use, the cleaning basket is placed in the water tank, and the rotation of the second magnetic part drives the first magnetic part, the spray arm and the first impeller to rotate, so that water at the bottom of the cleaning basket is drawn into the spray arm and further sprayed upward, and the cleaning effect is improved in cooperation with the turbulent water flow. When it is not needed to be used as a cleaning machine, the cleaning basket is taken out of the water tank and can be used as an ordinary water tank, thereby improving the space utilization rate of the water tank. The rotation of the second impeller is used to make the generator generate electricity to supply power to the electrolysis module, so that it is not necessary to connect the electrolysis module to a power supply outside the water tank through a power cord, thereby simplifying the overall structure. The turbulent water flow is conducive to uniformly dispersing free hydroxyl groups generated by the electrolysis module, thereby improving the cleaning effect.

Disclosed herein are systems and methods for electrically modulating tissue. Systems can include a current generator; at least one implantable working electrode, the at least one implantable working electrode configured to be in electrical communication with the current generator; at least one indifferent electrode; and a controller configured to signal the current generator to: generate a set of currents with a set of initial polarities to be delivered to the working electrodes; and wherein the at least one indifferent electrode absorbs a bias current which is equal in magnitude and opposite in polarity to a summation of the set of currents.

Wireless circuitry is provided that includes a transformer having a primary coil and a secondary coil, a first group of switchable capacitors coupled to a first terminal of the primary coil, a second group of switchable capacitors coupled to a second terminal of the primary coil, and capacitance measurement circuitry selectively coupled to a center tap of the primary coil during a measurement mode. The capacitance measurement circuitry can include a current source, a current sink, a comparator, a voltage generator for providing one or more threshold / reference voltages to the comparator, a frequency measurement circuit, and a capacitance calculation circuit configured to compute a capacitance of the first and second groups of switchable capacitors.

The invention relates to the technical field of inverter control, and discloses a VSG-based inverter phase-locked loop-free pre-synchronization method, system and device and a medium, and the method comprises the steps: eliminating the voltage deviation between the VSG inverter voltage of a virtual synchronous generator and the output voltage of a micro-grid through a deviation integral feedback method; a general signal delay superposition operator is adopted to filter the power grid voltage so as to construct virtual power, then the virtual power is introduced into an active-frequency loop of the virtual synchronous generator as a feedback signal, and a power angle feedback control model is formed so as to adjust the VSG inverter voltage; and detecting the voltage deviation between the power grid voltage and the adjusted VSG inverter voltage in real time, and when it is judged that the voltage deviation is smaller than a deviation threshold value, generating a grid-connected connection point switching-on instruction and controlling a switch of a grid-connected connection point to be switched on, so that phase-locked loop-free pre-synchronization of the distributed power supply inverter is realized, the grid-connected stability of the distributed power supply inverter is enhanced, and the grid-connected stability of the distributed power supply inverter is improved. And the current and voltage impact of the grid-connected instant system is reduced.

The invention discloses a self-powered multifunctional wireless sensing system based on a wind energy friction nano-generator, which comprises a self-powered module, the self-powered module is provided with the wind energy friction nano-generator capable of generating alternating current, and the self-powered module comprises a supporting seat and a friction power generation assembly fixedly assembled on the supporting seat; the friction power generation assembly comprises a wind energy rotating mechanism, an FEP film sleeve layer, a first power generation copper electrode set and a second power generation copper electrode set, the first power generation copper electrode set and the second power generation copper electrode set are fixedly attached to the outer side of the fixing cylinder, and the FEP film sleeve layer is connected to the outer side of the first power generation copper electrode set and the outer side of the second power generation copper electrode set in a sleeving mode. The wind energy rotating mechanism is connected to the outer side of the FEP film sleeve layer in a sliding and sleeving mode. Two copper foil sheets are arranged in the wind energy rotating mechanism; the wireless sensing module is electrically connected with the first power generation copper electrode group, and the wired energy supply module is electrically connected with the second power generation copper electrode group. The friction nanometer generator can supply power to the wireless unit and the wired unit at the same time, and the utilization efficiency of the friction nanometer generator on wind energy is improved.

A dynamo-electric rotary machine includes a rotor defining an axis, a stator, and a can designed for arrangement in an air gap between the rotor and the stator in order to seal the stator and the rotor in relation to each other. The can has at least one section of average electrical conductivity in a range from 1 S / m to 10000 S / m in an axial and / or a tangential direction. The can is electrically conductively incorporated in an earthing system of the dynamo-electric machine.

The invention discloses a fault diagnosis method for an H-bridge half-controlled rectifier of an electro-magnetic doubly salient generator, and relates to the field of electro-magnetic doubly salient generators, the method is developed based on an improved H-bridge half-controlled rectifier topological structure, and the improved H-bridge half-controlled rectifier topological structure is additionally provided with a current sensor for each phase of armature winding. The leads of the left and right bridge arms connected with each phase of armature winding are wound on the current sensor in a winding manner, so that each phase of current sensor can obtain more current information; open-circuit fault diagnosis can be realized through current measured by a current sensor wound by a working two-phase armature winding in each sector, the method is small in calculation amount and easy to realize, is not influenced by rotating speed or load change, is also not influenced by fault occurrence positions and conduction angle change, can realize single-tube, double-tube and multi-tube fault positioning, and can be applied to the field of fault diagnosis. The diagnosis effect is good; and the application range is wide.

The invention relates to an AC / DC generator regulator control method, system and device and a medium, and the method comprises the steps: obtaining the real-time load data and environment data of a generator, carrying out the preprocessing of the real-time load data and environment data of the generator, and obtaining the preprocessed data; transmitting the preprocessed data to a pre-trained load prediction model for comparative analysis to obtain a load prediction result; generating a preliminary control strategy of the generator according to the load prediction result; constructing a virtual model of the generator by using a digital twin condition, simulating states of the generator under different loads and operation, optimizing parameters of the preliminary control strategy based on virtual simulation data, and generating an optimization strategy of the generator; and based on the optimization strategy of the generator, the operation parameters of the generator are adjusted by applying a self-adaptive anti-interference control and fuzzy control algorithm so as to realize stable and efficient operation. The method has the effect of improving the adjustment precision of the generator.

The present application relates to a method for optimizing the layout of building masonry based on Dynamo, which uses Revit to establish parametric block families and parametric mortar joint families and generate horizontally nested families of middle bricks, nested families of base bricks, and nested families of back-filled bricks. Layout plans of various masonry types are established based on the horizontally nested families of middle bricks. The layout plan outputs the length of the left half brick and the length of the right half brick. The layout plan is written as a Dynamo node. After being imported into the wall, the masonry type is determined according to the wall length and the wall layout is generated. The present application solves the problem that the limitations of brick arrangement design restrict the secondary deepening design during the construction process. The present application can simplify the design steps, realize the coordination of design results and parameter changes, and improve the efficiency of secondary deepening.

Described herein are systems using motion to generate electrical power to power external components. The disclosure also includes potential uses of said devices. An electrical energy generation system may include (A) a first tube generator comprising: (i) a housing, (ii) a permanent magnet positioned within the housing, (iii) a first and second damper positioned at the first and second end of the housing, and (iv) an electrically-conductive material that is coupled to the housing and extends along at least some of the travel length; (B) an energy storage unit electrically-coupled to the electrically-conductive material; and (C) a wireless communication unit electrically-coupled to the energy storage device, wherein the wireless communication unit is configured to one or both of transmit first data to a device that is external to the electrical energy generation system or receive second data from the device that is external to the electrical energy generation system.

The utility model discloses rectifier bridge assembling equipment for an automobile alternating-current generator, and relates to the technical field of rectifier bridges, the rectifier bridge assembling equipment comprises a workbench and a conveying belt, and further comprises an assembling assembly; the assembling assembly comprises a supporting plate, a mounting base, a ventilation pipe, an ash removal part and a pressing part. The supporting plate is fixed to the workbench through a frame body, and a through hole is formed in the supporting plate. The mounting base is hollow, two ends of the mounting base are open, the mounting base is fixed at the bottom, close to the conveying belt, of the supporting plate, the through hole is communicated with the opening of the mounting base, and the mounting base is located over the semi-finished rectifier bridge; a positioning soft bag is fixed to the inner side face of the mounting base, and the positioning soft bag can be inflated and deflated through a breather pipe. The dust removal part is used for performing dust removal operation on the semi-finished product rectifier bridge, and the pressing part is convenient for pressing the plastic shell on the semi-finished product rectifier bridge; the plastic shell and the semi-finished rectifier bridge can be conveniently assembled, dust on the semi-finished rectifier bridge can be cleaned, and the use safety of the rectifier bridge product is ensured.

A high power (HP) generator (10) and method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, A high power (HP) generator (10) and method, wherein a damping circuit (50) is positioned in an open chain configuration between some, particularly all, of the LP generators (14, 16, 18), and in particular the damping circuit (50) includes a resistor (R) and / or an inductor (L).

The present invention provides a portable lifting work lamp, comprising: a lamp head, a telescopic rod, a portable electrical box and a plurality of tripods. A hinge seat is provided at the bottom of the telescopic rod, and a plurality of tripods are rotatably connected to the hinge seat, and the plurality of tripods are arranged in a circular array with the telescopic rod as the center, and the lamp head is arranged at the top of the telescopic rod; an electrical connector is provided on the side of the hinge seat; the portable electrical box comprises a box body and a wiring row, a spare cable and a battery pack accommodated in the box body, and an electrical socket is provided on the outside of the box body, and the spare cable is used to connect the electrical socket and the electrical connector. The battery pack of the portable electrical box serves as an independent power source for the lamp head, so that the work lamp does not need to be bound to a generator for use, and can provide stable lighting in outdoor scenes where electricity cannot be connected; the portable electrical box and the lamp head are independent of each other, and are electrically connected through a spare cable, so that the lamp head and the portable electrical box can be disassembled and carried separately, which is convenient to carry.

The invention discloses an energy storage type medium-voltage switch test system, which comprises an energy storage power supply, a three-phase closing switch, a three-phase operating circuit breaker, an adjusting reactor, an adjusting resistor and a test object circuit breaker, and is characterized in that a three-phase alternating current output end of a generator is connected with a wiring port at one end of the three-phase closing switch; a wiring port at the other end of the three-phase closing switch is connected with a wiring port at one end of a three-phase operating circuit breaker, a wiring port at the other end of the three-phase operating circuit breaker is connected with a wiring port at one end of an adjusting reactor, and a wiring port at the other end of the adjusting reactor is connected with a wiring port at one end of an adjusting resistor. A wiring port at the other end of the adjusting resistor is connected to a wiring port at one end of the test object circuit breaker, and the wiring port at the other end of the test object circuit breaker is in short-circuit connection. According to the invention, the energy storage power supply completely replaces a short-circuit generator power supply, the 10 kV circuit breaker is turned on and off, the test device is completely disconnected from the mains supply in the test process, no impact is caused to a power grid, the operation is simple, the input scale is small, a matched voltage reduction station does not need to be built, and the operation and maintenance cost is low.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, - A balancing circuit containing components that allow current to flow in only one direction, in particular a diode (D) or a component acting like a diode, is connected between the two LP generators (14, 16, 18).

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each including an energy storage component (C1, L1), wherein, during use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; Each provides, when in use, at its output an LP generator value that corresponds to the value of the energy storage components (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18) Several LP generators (14, 16, 18) and - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, The control unit (22) is further configured to select the contribution of the LP generators (14, 16, 18) in a galvanically isolated manner, in particular via a fiber optic connection or a magnetic coupling.

A high power (HP) generator (10) and a method for delivering pulsed high power at high voltage and / or current values ​​to a capacitive load, in particular a plasma process, comprising: - several low power (LP) generators (14, 16, 18), each LP generator (14, 16, 18) includes an energy storage component (C1, L1), and in use, the energy storage component (C1, L1) is charged to a predetermined value associated with the energy storage component; each LP generator (14, 16, 18) when in use provides at its output an LP generator value corresponding to the value of an energy storage component (C1, C2, Cn, L1, L2, Ln) incorporated in the respective LP generator (14, 16, 18); Several low power (LP) generators (14, 16, 18); - a coupling (20), the LP generators (14, 16, 18) being electrically connected such that a coupling value at an output of the coupling (20) can be obtained which corresponds to an output value of the HP generator (10) and which is higher than the LP generator value at the output of one of the LP generators (14, 16, 18) during use, at least in some states of the HP generator (10); - a control unit (22) configured to select the contribution of the LP generators (14, 16, 18) to the output value of the HP generator (10) during the power delivery of the HP generator (10) in order to produce a rise and / or a decay of a pulse at the output of the coupling (20); Including, At least one, preferably several and most preferably all LP generators (14, 16, 18) comprise an LP generator value limiting circuit (151), e.g. a voltage limiting circuit or a current limiting circuit.

A medium voltage inrush current (MVIC) regulator and interconnection control system for interposing between a distributed power generation facility and a utility grid. The facility has a designated generator step-up (GSU) transformer and is connected to the utility grid at a point of interconnect. The system includes a pre-insertion impedance injection transformer, a low voltage first switch connected between the pre-insertion transformer and secondary coils of the designated GSU transformer, a medium voltage second switch connected inline between the pre-insertion transformer and primary coils of the designated GSU transformer, and a controller. In response to restoration of the utility grid following a loss-of-grid event, the controller opens and closes the first and second switches according to an automated pre-energization switching sequence such that magnetic flux in the designated GSU transformer occurs at a reduced rate, thereby reducing inrush of current and undesirable power quality phenomena.

The invention belongs to the technical field of safety protection of large generators, and particularly discloses a slot potential-based ground fault arc extinction and TVS fault identification method and system. The fundamental wave slot potential and the third harmonic slot potential of each slot conductor are calculated by obtaining the fundamental wave and third harmonic voltage of the neutral point and the generator end of the generator. And furthermore, the real fault position is determined through matching with the ground fault potential, so that fault positioning at any position in a full winding range is realized, the limitation of a traditional method is broken through, and the coverage range of fault positioning is remarkably expanded. According to the invention, through the voltage and current low-frequency components of the neutral point of the generator, the grounding transition resistance during a grounding fault and the grounding transition resistance during stabilization after arc extinction are respectively calculated, and the fault property is judged by comparing the transition resistances in different states, so that an instantaneous fault and a permanent fault can be accurately distinguished; simple and effective fault identification is provided, engineering realization is easy, and fault properties can be rapidly and accurately judged.

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 relates to the technical field of bridge construction, in particular to a method for creating a bridge component based on Revit and Dynamo. The method comprises the following steps: S1, dividing bridge components into a point-based model and a line-based model, and respectively setting two automatic modeling programs; s2, establishing a parameterized family based on a point model, and loading the parameterized family into Revit; s3, reading the parameter data in the excel table; s4, using data to complete model size modification and automatic accurate positioning; s5, establishing a parameterized family based on a line model, and loading the parameterized family into Revit; s6, determining starting and ending point positions of the linear component; s7, determining a vertical offset distance; and S8, generating a model instance, and automatically modifying instance size parameters in batches. An excel table is read through Dynamo, parameters are automatically given to instance parameters in the model, data are used for driving parameterized model families, the model is automatically generated, and the model precision and the construction efficiency are remarkably improved. The method is mainly applied to the aspect of automatically creating the fabricated bridge member.

The invention discloses a Dynamo parameterized modeling method for a membrane structure roof, based on Revit software, the Dynamo parameterized modeling method comprises the following steps: loading a Dynamo plug-in in the Revit software, and parameterizing in an XOY plane through the Dynamo plug-in to generate a plurality of space point sets approximately fitted on an outer contour projection line of the membrane structure roof; equally dividing the plurality of spatial point sets by taking the center of the projection line of the outer contour of the membrane structure roof as a circle center, and dividing the spatial point sets into two different sequences in sequence; the spatial point set of any sequence is moved upwards, so that a height difference is generated between the two sequences; combining the spatial point sets in the two sequences alternately in pairs, and connecting to form a closed curve passing through each spatial point set; and an upper curve which is the same as the outer contour of the top of the membrane structure roof is established above the center of the closed curve, the closed curve and the upper curve are subjected to cross section curve lofting to establish a space curved surface so as to form the membrane structure roof, and rapid, accurate and parameterized design of the membrane structure roof is achieved.

The invention relates to the technical field of micro-grids, and discloses an AC micro-grid distributed power control method with quantitative event triggering. According to the method, due to droop control in an island DC micro-grid, distribution of reactive power and unbalanced power in a system cannot be guaranteed, and a distributed control method with quantitative event triggering is provided for solving the problem. According to the control scheme provided by the invention, communication is reduced on the basis of realizing reactive power and unbalanced power distribution among distributed power generation units by adding a designed distributed secondary controller with a quantitative event triggering method, and parts which cannot be accurately distributed can be readjusted by a negative feedback system through PI control; in addition, the proposed method does not need global power information, each distributed generator only communicates with a neighbor when meeting a triggering condition, the communication burden of a micro-grid communication network is greatly reduced, the stability of the method is proved through a Russell invariant set principle, and Zeno behaviors are also eliminated through an anti-security method.

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.

A power backup system is provided for low power outdoor applications. The power backup system comprises a generator, a battery pack, a bus connecting the generator to the battery pack, and a current manager. The battery pack is connected to the bus in a series of parallel conductor paths. A voltage drop across a selected conductor path is different than other voltage drops across the other conductor paths. The current manager is configured to manage current between the generator and the battery pack based on bus voltage.

The invention relates to the technical field of generator operation and maintenance, in particular to a permanent magnet generator short circuit fault monitoring and diagnosis method based on a diagnosis winding, which comprises the following steps: acquiring no-load back electromotive force signals in a normal operation state and various typical fault states of a permanent magnet generator, and constructing a normal feature data set and a fault feature data set; acquiring a no-load back electromotive force signal of the permanent magnet generator in the current operation state; comparing the obtained current no-load back electromotive force signal with the normal characteristic data set, and judging the current working state of the permanent magnet generator; if it is judged that the current working state of the permanent magnet generator is in the fault state, the obtained current no-load back electromotive force signal is compared with the fault feature data set. In combination with a data processing algorithm, the diagnosis winding can continuously monitor the operation state of the permanent magnet generator, compares the current operation parameters with the preset reference experiment data, accurately evaluates the health state of the winding, and monitors and diagnoses faults such as turn-to-turn short circuit in real time.

A method for controlling a power generating asset having a generator with a stator operably coupled to a transformer and a rotor operably coupled to the transformer via a power converter includes using an angle of a phase-locked loop (PLL) reference signal of a PLL at a PLL reference node of the power generating asset to transform a three-phase set of signals to a two-dimensional orthogonal coordinate system of a synchronously rotating frame. The two-dimensional orthogonal coordinate system includes x and y components of at least one of voltage and current. The method also includes determining one or more dynamic decoupling factors as a function of one or more of the x and y components of at least one of voltage and current. Further, the method includes applying the one or more dynamic decoupling factors to current command calculation logic to mitigate a coupling effect of one or more current command components.

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.