CN107329080A - A kind of design method of dynamic power system simulations pilot system synchronous motor - Google Patents
A kind of design method of dynamic power system simulations pilot system synchronous motor Download PDFInfo
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- CN107329080A CN107329080A CN201710037720.9A CN201710037720A CN107329080A CN 107329080 A CN107329080 A CN 107329080A CN 201710037720 A CN201710037720 A CN 201710037720A CN 107329080 A CN107329080 A CN 107329080A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
Abstract
The invention discloses a kind of design method of dynamic power system simulations pilot system synchronous motor, basic parameter of this method in reasonable selection motor, basic structure, mounting means, working method, degree of protection, on the basis of type of cooling etc., by to electric machine rotor geometry, the design adjustment of winding etc., motor excitation system is designed and the modes such as inertia disc are added on unit rotor axle, realize the major electromagnetic data perunit value of simulated machine, time constant is equal with prototype machine difference, the nonlinear characteristic of simulated machine is similar to prototype machine.This method is while the miniaturization of dynamic power system simulations system, experiment safe ready is met so that simulated machine can accurately simulate the electromechanics and electromagnetic process of large turbine-generator set, realize the accurate simulation to prototype machine stable state and transient characterisitics.
Description
Technical field
The present invention relates to dynamic power system simulations system regions, especially a kind of dynamic power system simulations pilot system
The design method of synchronous motor.
Background technology
Dynamic power system simulations system is, according to correspondence theorem, to be set up according to the physical property of prototype power system
Diminution ratio simulation experiment system, be electric power system design and analysis on Operating, secondary device experimental test, relay protection
The important experimental tool of technical research.Large turbo-type generator is one of main electrical equipment in power system, to power train
The operation of system has important influence, and in dynamic power system simulations system, mould is used as using small-sized electric excitation synchronous motor
Intend motor to simulate the transient state of the electromechanics and electromagnetic property, especially prototype machine of the large turbo-type generator as prototype machine
Characteristic.The reasonability of molded motor design, is reflected in its accuracy to the simulation of prototype machine, determines power system dynamic
The reliability of state simulation system and its reasonability of experimental result, construction and power train for dynamic power system simulations system
The development of system dynamic simulation experiment is all significant.
The design theory comparatively perfect of traditional electric excitation synchronous motor, the design to simulated machine provides certain ginseng
Examine and reference function.But the design method of traditional electric excitation synchronous motor, main design goal is to ensure motor in specified fortune
Row point nearby reaches the operation characteristic of demand, and forms on the basis of this target the design program of motor.The design program one
As be on the basis of motor basic parameter is determined, according to design theory and empirical coefficient, to pass through ripe design and calculate public
Formula, is adjusted or redesigns to experience structure, obtains the design of motor, realizes its main design goal.With meter
The development of calculation machine technology and numerical analysis techniques, numerical computation method is also obtained such as finite element method in design of electrical motor
Application, is mainly used in checking design of electrical motor scheme.
But existing electric excitation synchronous motor design method is not suitable in dynamic power system simulations system simulating electricity
The design of machine.The design of simulated machine can not be by simple by the scaled realization of prototype machine, but needs according to phase
Like criterion so that the major electromagnetic data perunit value of simulated machine, time constant are equal with prototype machine difference, simulated machine
Nonlinear characteristic is similar to prototype machine.The difference of design object causes traditional design method to be difficult to meet setting for simulated machine
Meter is required.Therefore, study and propose that the design method for being adapted to simulated machine just seems particularly necessary.
The content of the invention
The purpose of the present invention is that there is provided a kind of dynamic power system simulations pilot system for above-mentioned the deficiencies in the prior art
The design method of synchronous motor, this method meet dynamic power system simulations system miniaturization, experiment safe ready while,
Allow simulated machine accurately to simulate the electromechanics and electromagnetic process of large turbine-generator set, realize to prototype machine stable state with
The accurate simulation of transient characterisitics.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of design method of dynamic power system simulations pilot system synchronous motor, the described method comprises the following steps：
1) motor basic parameter is determined, includes apparent energy, power factor, rated voltage, rated current and the volume of motor
Determine rotating speed etc.；
2) according to electric excitation synchronous motor magnetic circuit calculation formula, rotor machinery inertial time constant and armature-reaction electricity are passed through
Anti- desired value, which is calculated, determines rotor key dimension, gas length, magnetic loading and specific electric load, passes through stator winding resistance and stator slot
Leakage reactance desired value selects and calculates stator groove profile, stator slot size and stator winding major parameter；
3) according to electric excitation synchronous motor magnetic circuit calculation formula, Damper Winding leakage reactance and Exciting Windings for Transverse Differential Protection leakage reactance target are passed through
Value, selects and calculates rotor field coil and the groove profile and size of Damper Winding, calculates Exciting Windings for Transverse Differential Protection and mainly joins with Damper Winding
Number, the major parameter of Exciting Windings for Transverse Differential Protection includes：Exciting Windings for Transverse Differential Protection resistance, leakage reactance, end leakage reactance, the major parameter bag of Damper Winding
Include：Damper Winding d-axis and quadrature axis resistance, d-axis and quadrature axis leakage reactance, end resistance, end leakage reactance；
4) in step 2) with step 3) on the basis of, complete the preliminary electromagnetic design of motor, including silicon steel material selection,
The selection of stator winding and Exciting Windings for Transverse Differential Protection line gauge and the design of design of terminations, damping cage size and end construction etc., it is fixed to make
Sub- winding and Damper Winding dominant resistance parameter perunit value and prototype are essentially identical, and rotor windings perunit value and prototype are basic
It is identical；
5) according to step 4) complete the preliminary electromagnetic design of motor, set up parametrization motor limit element artificial module, check
The result of Preliminary design, using magnetic conductivity finite element method is freezed, according to synchronous motor two-axis equivalent circuit model one by one
Verify reactance parameter and correct the detailed structure size of motor successively；
6) according to step 5) revised motor model, calculate motor stable state and transient state by finite element numerical computational methods
Parameter, checks design of electrical motor result whether consistent with target.
Preferably, the dynamic power system simulations system electric excitation synchronous motor includes implicit pole synchronous motor and salient pole is same
Walk motor.
Preferably, step 1) in, determine to need to consider with dynamic power system simulations system during motor basic parameter
Match somebody with somebody, including：The optimum choice of rated voltage should improve experiment security, and consider each section of dynamic power system simulations system
The selection of voltage class, so as to reduce redundance unit；The optimum choice of rated capacity is on the basis of rated voltage selection, it is considered to
The capacity requirement and relay protection dynamic simulation experiment of dynamic power system simulations system study the requirement to running current；Volume
The cooperation of former motor and generator need to be considered by determining the selection of rotating speed；The selection of simulated machine nominal parameter should take motor into account simultaneously and exist
Allow to change the possibility that capacity is run in the range of heating.
Preferably, step 2) with step 3) described in electric excitation synchronous motor magnetic circuit calculation formula be to use magnetic equivalent circuit method
Thought, space magnetic field is equivalent to multistage magnetic circuit, winding is equivalent into magnetic potential source, magnetic structure is equivalent to magnetic conductance and is counted
The method of calculation.
Preferably, step 2) regulative mode of unit set inertia time constant need to be considered, the simulated machine rotor inertia time is normal
Number value should be less than prototype machine and reserved enough nargin is to former motor, and to reduce motor volume, rotor draw ratio can be fitted
Degree takes greatly, but must take into consideration the requirement of rotor copper factor and resistance, it is to avoid cause iron core height saturation, stator slot design principle
To require to determine that groove width is high with groove with stator resistance according to tooth magnetic is close first, notch chi is determined further according to leakage reactance and technological requirement
It is very little.
Preferably, step 3) it should consider that Damper Winding groove, in the cooperation of rotor space plane, is kept away with Exciting Windings for Transverse Differential Protection groove first
Exempt from the close saturation of the magnetic of rotor tooth and yoke, then determine that groove width is high with groove, adjusted by notch size damped in leakage reactance, transient process around
Group induced-current Kelvin effect degree is related with size selection to Damper Winding groove profile, and Kelvin effect causes Damper Winding electric current point
Cloth is uneven, and groove top electricity is close to be improved, and influence Damper Winding is straight, quadrature axis groove Leakage Reactance, and Damper Winding slot structure needs to consider when designing
Influence of the Kelvin effect to Damper Winding leakage reactance, adjustment tank top and notch arrangement.
Preferably, step 4) answer emphasis to consider the matching design of Damper Winding end and Exciting Windings for Transverse Differential Protection end, will damping around
Group end also serves as rotor end plates simultaneously, and end plate reserves excitation winding pole coil groove, and Exciting Windings for Transverse Differential Protection end is on the outside of end plate, Damper Winding
Copper bar is welded and fixed with end plate.
Preferably, step 5) described in the magnetic conductivity finite element method that freezes comprise the following steps：
The first step, sets up motor transient finite element analysis model and the unloaded stable state three-phase shortcircuit circuit model of stator winding；
Second step, is calculated by electromagnetic field-circuit coupling, when obtaining each in motor stator winding three-phase shortcircuit transient process
Between the rotor silicon steel sheet magnetic conductivity artificial intelligence put；
3rd step, sets up motor Static finite element analysis model, passes through the rotor silicon steel sheet magnetic conductance for freezing second step
Rate is imported, using static field Finite Element Numerical Simulation method, obtains stator winding leakage reactance in transient process, the reaction of d armature axis
Reactance, q armature axis reaction reactance, Exciting Windings for Transverse Differential Protection leakage reactance, d axle Damper Windings leakage reactance, the perunit of q axle Damper Winding leakage reactances
Value.
Preferably, step 5) described in freeze magnetic conductivity finite element method, by set up parametrization motor it is limited
Element analysis model, prepares a computer program to adjust electric machine structure parameter repeatedly and use and freezes magnetic conductivity finite element method meter
Motor impedance is calculated, required motor construction parameter is eventually found.
Preferably, step 6) described in the finite element numerical computational methods that pass through calculate motor stable state and transient parameter and use
Be electromagnetic field-circuit Coupled Numerical computational methods, specifically include and freeze magnetic conductivity method and experimental analogic method.
The present invention compared with prior art, has the following advantages that and beneficial effect：
Present invention employs the synchronous motor design technology project for being combined magnetic circuit calculating with FEM calculation, program tool
Body proposes the magnetic Circuit Design computational methods for dynamic model motor, and completes tentatively setting for motor by the magnetic Circuit Design computational methods
Meter, proposes motor stable state, the transient parameter finite element check analysis method for dynamic model motor, and complete by finite element analysis
The check and amendment of dynamic model design of electrical motor scheme, thus reached formed be adapted to dynamic model motor synchronous motor design method,
Formed and be adapted to the parameter of synchronous machine finite element method of dynamic model motor, improve dynamic model motor to prototype machine parameter simulation
Accuracy effect, for instructing designing and developing for simulated machine in dynamic power system simulations system, for moving die system
Construction and Dynamic Simulation Experiments of Power System research development it is significant.
Brief description of the drawings
Fig. 1 illustrates for the dynamic power system simulations pilot system synchronous motor stator punching design of the embodiment of the present invention 1
Figure.
Fig. 2 illustrates for the dynamic power system simulations pilot system synchronous electric motor rotor punching design of the embodiment of the present invention 1
Figure.
Fig. 3 is the flow chart of the design method of dynamic power system simulations pilot system synchronous motor of the present invention.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment 1：
Dynamic power system simulations pilot system synchronous motor stator punching as shown in Figure 1 and Figure 2 and rotor punching, are adopted
With the design method of dynamic power system simulations pilot system synchronous motor as shown in Figure 3, the computational methods used include
Electric excitation synchronous motor equivalent magnetic circuit computational methods, transient electromagnetic field-circuit coupling finite element numerical computational methods, static electromagnetic
Field finite element numerical computational methods, the design method comprises the steps：
1) motor basic parameter is determined, includes apparent energy, power factor, rated voltage, rated current and the volume of motor
Determine rotating speed；
2) according to electric excitation synchronous motor magnetic circuit calculation formula, rotor machinery inertial time constant and armature-reaction electricity are passed through
Anti- desired value, which is calculated, determines rotor key dimension, gas length, magnetic loading and specific electric load, passes through stator winding resistance and stator slot
Leakage reactance desired value selects and calculates stator groove profile, stator slot size and stator winding major parameter；
3) according to electric excitation synchronous motor magnetic circuit calculation formula, Damper Winding leakage reactance and Exciting Windings for Transverse Differential Protection leakage reactance target are passed through
Value, selects and calculates rotor field coil and the groove profile and size of Damper Winding, calculates Exciting Windings for Transverse Differential Protection and mainly joins with Damper Winding
Number, the major parameter of Exciting Windings for Transverse Differential Protection includes：Exciting Windings for Transverse Differential Protection resistance, leakage reactance, end leakage reactance, the major parameter bag of Damper Winding
Include：Damper Winding d-axis and quadrature axis resistance, d-axis and quadrature axis leakage reactance, end resistance, end leakage reactance；
4) in step 2) with step 3) on the basis of, complete the preliminary electromagnetic design of motor, including silicon steel material selection,
The selection of stator winding and Exciting Windings for Transverse Differential Protection line gauge and the design of design of terminations, damping cage size and end construction etc., it is fixed to make
Sub- winding and Damper Winding dominant resistance parameter perunit value and prototype are essentially identical, and rotor windings perunit value and prototype are basic
It is identical；
5) according to step 4) complete the preliminary electromagnetic design of motor, set up parametrization motor limit element artificial module, check
The result of Preliminary design, using magnetic conductivity finite element method is freezed, according to synchronous motor two-axis equivalent circuit model one by one
Verify reactance parameter and correct the detailed structure size of motor successively；
6) according to step 5) revised motor model, calculate motor stable state and transient state by finite element numerical computational methods
Parameter, checks design of electrical motor result whether consistent with target.
The electromagnetism for simulating certain model Turbo-generator Set is further detailed with mechanical property below, according to dynamic model
System design scheme, determines motor apparent energy 6kVA, rated power factor 0.9, rated speed 1500rpm, rated voltage
100V, according to prototype unit machinery inertial time constant and dynamic model unit prime mover rotary inertia, calculates electromechanics inertia
Time constant, rotor external diameter and iron core effective length are determined according to reasonable draw ratio, according to prototype machine armature-reaction electricity
Anti- perunit value calculates motor gas-gap length.
Stator groove profile and stator winding are designed according to stator winding resistance and stator leakage reactance perunit value, and pass through equivalent magnetic circuit
Analytic Calculation Method calculates adjustment, while determine that stator yoke is wide and stator outer diameter according to rational stator yoke degree of saturation, according to
Exciting Windings for Transverse Differential Protection leakage reactance perunit value designs Exciting Windings for Transverse Differential Protection and rotor field coil groove profile, and carries out calculating tune by magnetic equivalent circuit method
It is whole, Damper Winding groove profile is designed according to Damper Winding leakage reactance and Damper Winding resistance perunit value, and enter by magnetic equivalent circuit method
Row calculates adjustment, completes the electromagnetism Preliminary design of motor other parts.
Parameter of electric machine limited element calculation model is set up, motor stator winding leakage reactance is calculated using magnetic conductivity method is freezed, encourages
Magnetic winding leakage reactance, Damper Winding leakage reactance, direct-axis synchronous reactance, quadrature axis synchronous reactance, direct-axis transient reactance, the super transient state electricity of d-axis
It is anti-, empty load of motor characteristic, load characteristic, short circuit curve etc. are calculated using experimental analogic method.
The part main design parameters of the motor designed according to the present embodiment are shown in Table 1, and are designed according to the present embodiment
The parameter comparison of the part stable state of motor, transient parameter and prototype machine is shown in Table 2, and wherein synchronous reactance is nominal load fortune
Row value.
The motor main design parameters of the embodiment 1 of table 1
| Title | Data | Unit | Title | Data | Unit |
| Stator outer diameter | 435 | mm | Rotor internal diameter | 50 | mm |
| Number of stator slots | 36 | Groove | Core length | 177.5 | Mm |
| Rotor reality slot number | 16 | Groove | Rotor void slot number | 20 | Groove |
| Damper Winding slot number | 20 | Groove | Stator winding pattern | Double-deck lap winding | |
| Exciting Windings for Transverse Differential Protection pattern | Concentrical winding | Damper Winding pattern | Mouse cage absolute damping |
The parameter of electric machine of the embodiment 1 of table 2 is contrasted with prototype
It is described above, it is only patent preferred embodiment of the present invention, but the protection domain of patent of the present invention is not limited to
This, any one skilled in the art is in the scope disclosed in patent of the present invention, according to the skill of patent of the present invention
Art scheme and its patent of invention design are subject to equivalent substitution or change, belong to the protection domain of patent of the present invention.
Claims (10)
1. a kind of design method of dynamic power system simulations pilot system synchronous motor, the described method comprises the following steps：
1) motor basic parameter is determined, including the apparent energy of motor, power factor, rated voltage, rated current and specified turn
Speed；
2) according to electric excitation synchronous motor magnetic circuit calculation formula, rotor machinery inertial time constant and reactance of armature reaction mesh are passed through
Scale value, which is calculated, determines rotor key dimension, gas length, magnetic loading and specific electric load, is leaked electricity by stator winding resistance and stator slot
Anti- desired value selects and calculates stator groove profile, stator slot size and stator winding major parameter；
3) according to electric excitation synchronous motor magnetic circuit calculation formula, Damper Winding leakage reactance and Exciting Windings for Transverse Differential Protection leakage reactance desired value, choosing are passed through
Select and calculate rotor field coil and the groove profile and size of Damper Winding, calculate Exciting Windings for Transverse Differential Protection and Damper Winding major parameter, encourage
The major parameter of magnetic winding includes：Exciting Windings for Transverse Differential Protection resistance, leakage reactance, end leakage reactance, the major parameter of Damper Winding include：Resistance
Buddhist nun's winding d-axis and quadrature axis resistance, d-axis and quadrature axis leakage reactance, end resistance, end leakage reactance；
4) in step 2) and step 3) on the basis of, the preliminary electromagnetic design of motor is completed, includes selection, the stator of silicon steel material
The selection of winding and Exciting Windings for Transverse Differential Protection line gauge and design of design of terminations, damping cage size and end construction etc., make stator around
Group, rotor windings perunit value and prototype basic phase essentially identical with Damper Winding dominant resistance parameter perunit value and prototype
Together；
5) according to step 4) the preliminary electromagnetic design of motor that completes, parametrization motor limit element artificial module is set up, is checked preliminary
The result of design, using magnetic conductivity finite element method is freezed, is verified one by one according to synchronous motor two-axis equivalent circuit model
Reactance parameter and the detailed structure size for correcting motor successively；
6) according to step 5) revised motor model, calculate motor stable state by finite element numerical computational methods and join with transient state
Number, checks design of electrical motor result whether consistent with target.
2. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：The dynamic power system simulations system electric excitation synchronous motor includes implicit pole synchronous motor and salient pole synchronous electric machine.
3. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 1) in, determine to need to consider to match with dynamic power system simulations systems during motor basic parameter, including：
The optimum choice of rated voltage should improve experiment security, and consider each section of voltage class of dynamic power system simulations system
Selection, so as to reduce redundance unit；The optimum choice of rated capacity is on the basis of rated voltage selection, it is considered to power system
The capacity requirement and relay protection dynamic simulation experiment of dynamic simulator system study the requirement to running current；Rated speed
Selection need to consider the cooperation of former motor and generator；The selection of simulated machine nominal parameter should take motor into account simultaneously and allow heating
In the range of change capacity operation possibility.
4. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 2) with step 3) described in electric excitation synchronous motor magnetic circuit calculation formula be method using magnetic equivalent circuit method,
Space magnetic field is equivalent to multistage magnetic circuit, winding is equivalent into magnetic potential source, magnetic structure is equivalent to magnetic conductance and is calculated.
5. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 2) in, simulated machine rotor inertia time constant value should be less than prototype machine and reserved enough nargin to
Former motor, to reduce motor volume, rotor draw ratio moderately takes greatly, but must is fulfilled for wanting for rotor copper factor and resistance
Ask, it is to avoid cause iron core height saturation, stator slot design principle is：Require to determine groove width with stator resistance according to tooth magnetic is close first
It is high with groove, determine notch size further according to leakage reactance and technological requirement.
6. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 3) cooperation of Damper Winding groove and Exciting Windings for Transverse Differential Protection groove in rotor space plane should be considered first, it is to avoid rotor tooth
With the close saturation of magnetic of yoke, then determine that groove width and groove are high, Damper Winding induced electricity in leakage reactance, transient process is adjusted by notch size
Flow Kelvin effect degree related with size selection to Damper Winding groove profile, Kelvin effect causes Damper Winding CURRENT DISTRIBUTION uneven,
Groove top electricity is close to be improved, and influence Damper Winding is straight, quadrature axis groove Leakage Reactance, and Damper Winding slot structure need to consider Kelvin effect when designing
Influence to Damper Winding leakage reactance, adjustment tank top and notch arrangement.
7. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 4) when completing motor Preliminary design, Damper Winding end is also served as into rotor end plates simultaneously, end plate reserves excitation
Winding wire ring recess, Exciting Windings for Transverse Differential Protection end is on the outside of end plate, and Damper Winding copper bar is welded and fixed with end plate.
8. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 5) described in the magnetic conductivity finite element method that freezes comprise the following steps：
The first step, sets up motor transient finite element analysis model and the unloaded stable state three-phase shortcircuit circuit model of stator winding；
Second step, is calculated by electromagnetic field-circuit coupling, obtains each time point in motor stator winding three-phase shortcircuit transient process
Rotor silicon steel sheet magnetic conductivity artificial intelligence；
3rd step, sets up motor Static finite element analysis model, by the way that the rotor silicon steel sheet magnetic conductivity that second step freezes is led
Enter, using static field Finite Element Numerical Simulation method, obtain stator winding leakage reactance in transient process, d armature axis reaction reactance,
Q armature axis reacts the perunit value of reactance, Exciting Windings for Transverse Differential Protection leakage reactance, d axle Damper Winding leakage reactances and q axle Damper Winding leakage reactances.
9. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：Step 5) described in freeze magnetic conductivity finite element method, pass through set up parametrization motor finite element analysis mould
Type, the adjustment electric machine structure parameter repeatedly for preparing a computer program simultaneously calculates motor electricity using magnetic conductivity finite element method is freezed
It is anti-, eventually find required motor construction parameter.
10. a kind of design method of dynamic power system simulations pilot system synchronous motor according to claim 1, it is special
Levy and be：It is characterized in that：Step 6) described in the finite element numerical computational methods that pass through calculate motor stable state and transient parameter
Electromagnetic field-circuit Coupled Numerical computational methods are used, specifically includes and freezes magnetic conductivity method and experimental analogic method.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108981823A (en) * | 2018-08-28 | 2018-12-11 | 华北电力大学（保定） | It is a kind of for monitoring the multi-parameter integrated sensor of generator armature winding |
| CN110417199A (en) * | 2019-07-10 | 2019-11-05 | 贵州航天林泉电机有限公司 | A kind of resistance to shorting permanent magnet generator design method based on interval frequency |
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| JP2001318132A (en) * | 2000-03-14 | 2001-11-16 | General Electric Co <Ge> | Frequency domain harmonic analysis method and apparatus for electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108981823A (en) * | 2018-08-28 | 2018-12-11 | 华北电力大学（保定） | It is a kind of for monitoring the multi-parameter integrated sensor of generator armature winding |
| CN108981823B (en) * | 2018-08-28 | 2020-12-29 | 华北电力大学（保定） | Multi-parameter integrated sensor for monitoring generator armature winding |
| CN110417199A (en) * | 2019-07-10 | 2019-11-05 | 贵州航天林泉电机有限公司 | A kind of resistance to shorting permanent magnet generator design method based on interval frequency |
| CN110417199B (en) * | 2019-07-10 | 2021-01-26 | 贵州航天林泉电机有限公司 | Anti-short-circuit permanent magnet generator design method based on interval frequency |
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