CN107918436A - A kind of direct-drive type wave-activated power generation maximal power tracing algorithm and its system - Google Patents
A kind of direct-drive type wave-activated power generation maximal power tracing algorithm and its system Download PDFInfo
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- CN107918436A CN107918436A CN201710615519.4A CN201710615519A CN107918436A CN 107918436 A CN107918436 A CN 107918436A CN 201710615519 A CN201710615519 A CN 201710615519A CN 107918436 A CN107918436 A CN 107918436A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
Abstract
The invention discloses a kind of direct-drive type wave-activated power generation maximal power tracing algorithm and its system, including permanent magnet linear generator, three-phase controlled rectifier, Buck Boosts, signal detection modulate circuit, DSP control circuits.Permanent magnet synchronous linear generator uses improved Direct Thrust Control, by adjusting the size of generator electromagnetic force, and then changes stressing conditions of the linear electric generator in wave.Optimal electromagnetic force is obtained by the maximal power tracing algorithm for obscuring variable step, and then is realized to maximal power tracing.For extreme weather conditions, electric mover position is calculated using linear Hall, monitors operation state of generator in real time.In wave electric power system, for improving generating efficiency, increase economic benefit plays an important roll.
Description
Technical field
The present invention relates to a kind of direct-drive type wave-activated power generation maximal power tracing system, belong to technical field of new energy power generation.
Background technology
New energy will play the part of more and more important role on energy framework, and solar energy and wind energy are being opened on a large scale
Hair, correlation technique is also increasingly ripe, but the utilization for wave energy is also in the starting stage.Wherein, made using linear motor
For generator method due to the special construction of motor, reduce substantial amounts of transmission device, reduce unnecessary mechanical loss,
The advantages such as generating efficiency are added, more and more important role is just played the part of in wave-activated power generation field.But wave energy is with very strong
Unstability, this results in the unbalanced power sent, realizes the maximum power tracing pair to direct-drive wave power generation system
In improving generating efficiency, increase economic benefit has great significance.
Existing direct-drive wave power generation system maximal power tracing usually adjusts BOOST, BUCK in wave electric power system
Deng the duty cycle of switching tube in DC/DC converters, system equiva lent impedance is adjusted, control system is equivalent to resistive load, realizes most
High-power capture.But since the time variation of wave is very strong, this kind of method is difficult to meet the requirements in dynamic property, reduce
The efficiency of wave-activated power generation.
The content of the invention
The present invention proposes a kind of direct-drive type wave-activated power generation maximal power tracing system to solve problems of the prior art
System, on the basis of the processing of wave-activated power generation electric energy is realized, by generator maximum power transfer condition and generator nature stress phase
With reference to realizing maximum wind power extract to wave energy, increase the economic benefit of wave-activated power generation, improve dynamic performance；Hall position
Detection circuit energy effective monitoring operation state of generator is put, improves the reliability and security of system operation.
Technical solution：A kind of direct-drive type wave-activated power generation maximal power tracing algorithm, is gathered by voltage-current sensor and sent out
Electric moter voltage electric current simultaneously calculates generator power, and by adjusting generator electromagnetic force, searching meets dP/dFe=0 this condition
Maximum power point, adjusts the duty cycle of each bridge arm switching tube of three-phase controlled rectifier, changes output voltage electric current；
Wherein, FeFor the electromagnetic force of permanent magnet linear generator, it is described as：
In formula (1), p is the number of pole-pairs of motor；ΨsFor the stator magnetic linkage of motor；Ld、LqThe respectively d-axis of motor, quadrature axis
Inductance；ΨpFor rotor permanent magnet magnetic linkage；δ is stator, the angle of mover magnetic linkage.
Further, the corresponding electromagnetic force of maximum power point, specific implementation step are found using fuzzy variable step track algorithm
Suddenly include：
Step 1, determine electromagnetic force scope：According to the peak acceleration a of system designmax, sea data, electric machine structure ruler
Very little calculating acts on vertical force F on generatorhEmpirical value scope, determine both direction electromagnetic force up and down according to formula (19)
Scope：
Fe+Fh- Mg=Ma (19)
Upwards during movement, electromagnetism force direction is downward, 0~F of electromagnetic force scopeup, using the variable step with fuzzy controller
MPPT algorithm is gradually reduced searching maximum power from maximum electromagnetic force and corresponds to electromagnetic force；When moving downward, electromagnetism force direction is upward,
Electromagnetic force 0~Fdown of scope, it is same that electromagnetism is corresponded to using the variable step MPPT algorithm searching maximum power with fuzzy controller
Power；
Step 2, using fuzzy controller, the input quantity of the fuzzy controller is adjacent difference power and difference power pair twice
The differential of time, establishes fuzzy control rule, obtains output quantity electromagnetic force change step；As adjacent difference power Δ P twicei＜
When 0, take at this time electromagnetic force as the corresponding electromagnetic force of maximum power point.
Further, the membership function of the fuzzy controller input quantity uses the form of Gaussian function, output quantity
Membership function uses trigonometric function form, the fuzzy rule, using honest PL, center PM, just small PS, zero ZO, bears small NS, negative
Middle NM, bear the size that big NL describes input and output amount.
The invention also discloses a kind of tracking system of direct-drive type wave-activated power generation maximal power tracing algorithm, including permanent magnetism are same
Walk linear electric generator, power circuit, detection circuit and control circuit；
The power circuit includes three-phase controlled rectifier and One Buck-Boost converter body, the three-phase controlled rectifier
Input terminal is connected with permanent magnet synchronous linear generator electric energy output end, and the output terminal of the three-phase controlled rectifier is through dc bus
Capacitance is followed by One Buck-Boost converter body, and the output terminal of the One Buck-Boost converter body is connected with load；
The detection circuit includes three-phase input current detection circuit, output current voltage detecting circuit and based on linearly suddenly
Your rotor position detection circuit, the return value based on detection circuit signal provide controlled quentity controlled variable for permanent magnet synchronous linear generator；
The control circuit includes the sampled value according to the detection circuit, calculates the duty cycle of each power switch pipe, control
The driving of the dsp chip and each power switch pipe of power circuit work processed, protect circuit, and claim 1 is set in the dsp chip
Maximal power tracing algorithm into 3 described in any one.
Further, permanent magnet synchronous linear generator uses Direct Thrust Control system, the Direct Thrust Control system bag
Include Sliding Mode Variable Structure System and space vector modulation module SVM, the current sample meter of permanent magnet synchronous linear generator generator terminal
Actual electromagnetic power and magnetic linkage signal are obtained after calculation, it is poor to make with given electromagnetic force and magnetic linkage preset value, through Sliding mode variable structure system
With space vector modulation module SVM, the control signal of three-phase controlled rectifier switching tube is calculated.6th, according to claim 4 institute
A kind of direct-drive type wave-activated power generation maximal power tracing system stated, it is characterised in that：The rotor position based on linear Hall
Detection circuit includes being used for the Hall sensor, signal sampling and conditioning electricity for monitoring permanent magnet synchronous linear generator positional information
Road, the Hall sensor are installed in parallel in the end of the mover armature winding of permanent magnet synchronous linear generator, and any two is suddenly
Your sensor differs three/a pair of pole span on locus, and corresponding electrical angle differs 120 degree, the output of the Hall sensor
Signal is input in dsp chip by signal sampling and modulate circuit, obtains the electrical angle of any time mover present position, root
Any time electric mover present position is obtained according to the relation of electrical angle and pole span, monitors the operating status of generator.
The invention also discloses a kind of permanent magnet synchronous DC generator of direct-drive type wave-activated power generation maximal power tracing system
Direct Thrust Control system, including Sliding Mode Variable Structure System and space vector modulation module SVM, permanent synchronous linear power generation
The three-phase current sampling of machine generator terminal obtains actual electromagnetic power and magnetic linkage signal, and given electromagnetic force and magnetic linkage preset value after calculating
It is poor to make, and through Sliding mode variable structure system and space vector modulation module SVM, the control for calculating three-phase controlled rectifier switching tube is believed
Number.
The invention also discloses a kind of generator protection system of direct-drive type wave-activated power generation maximal power tracing system, including
For monitoring the Hall sensor, signal sampling and modulate circuit of permanent magnet linear generator positional information, the Hall sensor
The end of the mover armature winding of permanent magnet synchronous linear generator is installed in parallel in, any two Hall sensor is in locus
Upper difference three/a pair of of pole span, corresponding electrical angle differ 120 degree, the output signal of the Hall sensor by signal sampling with
Modulate circuit is input in dsp chip, which calculates sampled value, can obtain position residing for any time mover
The electrical angle put, can obtain any time electric mover present position according to electrical angle and the relation of pole span, monitor generator
Operating status.
The beneficial effects of the invention are as follows：The present invention is compared with prior art：The permanent magnet synchronous linear generator of the present invention is adopted
With Direct Thrust Control, by adjusting the size of generator electromagnetic force, and then change stress feelings of the linear electric generator in wave
Condition, optimal electromagnetic force are obtained by the maximal power tracing algorithm for obscuring variable step, and then are realized to maximal power tracing, for pole
Weather condition is held, electric mover position is calculated using linear Hall, operation state of generator is monitored in real time, improves system operation
Reliability and security.The present invention is on the basis of the processing of wave-activated power generation electric energy is realized, by generator maximum power transfer condition
It is combined with generator nature stress, maximum wind power extract is realized to wave energy, increase the economic benefit of wave-activated power generation, improves system
System dynamic property.
Brief description of the drawings
Fig. 1 is direct-drive type wave-activated power generation electric energy processing system schematic diagram；
Fig. 2 is the improved direct Thrust system schematic of permanent magnet synchronous linear generator；
Fig. 3 searches flow chart for the corresponding optimal electromagnetic force of maximum power.
Embodiment
It is described further below in conjunction with drawings and examples.
As shown in Figure 1, a kind of direct-drive type wave-activated power generation maximal power tracing system of the present embodiment, including permanent magnet synchronous direct
Line generator, power circuit, detection circuit and control circuit.Power circuit is mainly by three-phase controlled rectifier and Buck-
Boost forms, and the input terminal of the three-phase controlled rectifier is connected with generator output end, three-phase controlled rectifier it is defeated
Outlet is followed by One Buck-Boost converter body, the output terminal of One Buck-Boost converter body and load through DC bus-bar voltage Support Capacitor
It is connected, load may be DC load, battery charging circuit or the input as follow-up inverter.Detection circuit includes generator terminal
Three-phase output current voltage detecting circuit and rotor position detection circuit, the return value based on detection circuit signal are described straight
Drive formula wave electric power system provides controlled quentity controlled variable.Control circuit includes drive circuit and the guarantor of dsp chip and each power switch pipe
Protection circuit, DSP is as the receiving terminal of data acquisition and the issuing side of control signal, according to the sampled value of detection circuit, using most
High-power track algorithm, calculates the duty cycle of each power switch pipe, controls the working status of power circuit, realizes maximum power point
Tracking.
As shown in Fig. 2, permanent magnet synchronous linear generator (PMLSG) uses improved Direct Thrust Control, the present embodiment
Generator Direct Thrust Control system can be obtained by existing permanent synchronous linear electric motor Direct Thrust Control system inverse transformation,
Three-phase bridge controls the output of inverter and then controls electromagnetism to push away as inverter in linear motor Direct Thrust Control system
Power, three-phase bridge controls the output of rectifier and then controls electromagnetism as rectifier in linear electric generator Direct Thrust Control system
Resistance.Improved Direct Thrust Control system is using strong robustness and responds rapid Sliding Mode Controller, permanent-magnet synchronous
The three-phase current sampling of linear electric generator generator terminal obtains actual electromagnetic power and magnetic linkage signal, and given electromagnetic force and magnetic after calculating
It is poor that chain preset value is made, and through Sliding Mode Controller and space vector modulation module SVM, calculates three-phase controlled rectifier switch
The control signal of pipe.
Sliding Mode Controller can make system have stronger robustness, improve the stability and response speed of system
Degree.The design of Sliding Mode Controller in permanent magnet synchronous linear generator Direct Thrust Control system is described below.
The electromagnetic force expression formula of permanent magnet synchronous linear generator is：
In formula, p is the number of pole-pairs of motor；ΨsFor the stator magnetic linkage of motor；Ld、LqThe respectively d-axis of motor, quadrature axis electricity
Sense；ΨpFor rotor permanent magnet magnetic linkage；δ is stator, the angle of mover magnetic linkage.
Choose switching function S=[S1 S2]T, specifically,
Wherein, K1、K2For the gain more than 0, meet that sliding formwork becomes the existence and accessibility of controller.Curved surface S1=0 is
Electromagnetic force pursuit path, S2=0 is the pursuit path of magnetic linkage squared magnitude.If system mode reaches and rests on diverter surface
When, meet condition：
To formula (2), (3) derivation respectively, work as S1And S2Differential be 0 when, can obtain：
Above formula ensures that error can converge to 0, it is possible to achieve robust control.Next, design control law makes tracking rail
Mark and diverter surface can join, and formula (2), (3) both sides are distinguished derivation and can obtain：
Wherein, S=[S1 S2]T, F=[F1 F2]T,
F2=K2eψ+2ψsαRsisα+2ψsβRsisβ (14)
Design Lyapunov function intermittent controlleds
Design switch control law：
In order to suppress to tremble a gust problem in sliding formwork change control, the switch function near diverter surface is substituted with continuous function：
Wherein λiFor smoothing factor, λi>0, i=1,2.
, can be quick using the permanent magnet synchronous linear generator Direct Thrust Control system with Sliding Mode Controller
It is set-point to control generator electromagnetic force, and has good interference free performance and excellent response speed.To realize most
High-power tracking, finds electromagnetic force and power optimized relation provides guarantee.
In direct-drive wave power generation system, the wave-activated power generation of fixed structure has fixed free period, realizes maximum ripple
The condition of unrestrained energy capture is consistent with wave period forms resonance free period.In general, the free period of generator is fixed, but
Being can be by varying electromagnetic force internal in power generation process, so that stressing conditions and movement during adjusting electrical power generators
State, realizes that generator and wave form resonance, realizes that system maximum power is run, improve systematic economy benefit.
Since generator motion state is complicated, it is affected by the external environment larger, real-time tracing maximum power is not easy to realize.For
Realize fast track maximum power point, it is main be divided in terms of two：On the one hand, above-mentioned permanent magnet synchronous linear generator directly pushes away
Force control system can ensure the electromagnetic force of quickly adjustment system；On the other hand, the corresponding electromagnetism of fast searching maximum power point
Power.
As shown in figure 3, a kind of maximal power tracing algorithm, gathers permanent synchronous linear by voltage-current sensor and generates electricity
Electromechanical piezoelectricity stream calculation generator power, by Direct Thrust Control system call interception generator electromagnetic force, searching meets dP/dFe
The maximum power point of=0 this condition.Specifically, using fuzzy variable step track algorithm, the corresponding electricity of maximum power point is found
Magnetic force.
The scope of electromagnetic force is determined, according to the peak acceleration a of system designmaxWith sea data, electric machine structure size meter
It can be regarded as with the vertical force F on generatorhEmpirical value scope, can determine upper and lower both direction electromagnetic force according to formula (19)
Scope.
Fe+Fh- Mg=Ma (19)
Upwards during movement, electromagnetism force direction is downward, 0~F of electromagnetic force scopeup, using the variable step with fuzzy controller
MPPT algorithm is gradually reduced searching maximum power from maximum electromagnetic force and corresponds to electromagnetic force；When moving downward, electromagnetism force direction is upward,
0~F of electromagnetic force scopedown, maximum power is equally found using MPPT algorithm and corresponds to electromagnetic force；Using improved direct Thrust system
The electromagnetic force of system control linear electric generator, the optimal electromagnetic force according to obtained by maximal power tracing algorithm, adjustment PWM rectifier are every
The duty cycle of a bridge arm switching tube, changes system output voltage electric current, realizes efficiency optimization.
The process moved upwards for linear electric generator, sets electromagnetic force initial value F1=Fup, according to the output of sampling electricity
Pressure, the electrical power P of Current calculation at this time1, electromagnetic force change step Δ F is set1=0.01Mg, F2=Fup-ΔF1, calculate at this time
Generated output P2；Second of electromagnetic force change step Δ F2Then by second and the difference power Δ P of first time1=P2-P1Obtain,
The step-length that fuzzy controller exports if if second and first time difference power is larger is larger, if second and first time power
The step-length of the smaller then fuzzy controller output of difference is smaller, sets third time electromagnetic force F3=F2-ΔF2, calculate power generation work(at this time
Rate P3... so circulation, until meeting condition Δ Pi＜ 0, shows electromagnetic force near maximum power point, and approximation takes electric at this time
Magnetic force is as maximum power point.The Principle of Process that generator moves downward is similar, does not specifically describe.Using improved direct Thrust
System controls the electromagnetic force of linear electric generator, and the optimal electromagnetic force according to obtained by maximal power tracing algorithm, adjustment three-phase is adjustable
The duty cycle of each bridge arm switching tube of rectifier, changes system output voltage, electric current, realizes efficiency optimization.
Electromagnetic force change step is adjusted using fuzzy controller, speed of searching optimization can be accelerated, reduce searching for optimal electromagnetic force
The rope time, improves the dynamic property of system.The input quantity of fuzzy controller is adjacent difference power and difference power twice to the time
Differential, establish fuzzy control rule, you can obtain output quantity electromagnetic force change step.The membership function of input quantity is using high
The form of this function, the membership function of output quantity use the form of trigonometric function.For fuzzy rule, using honest PL, just
Middle PM, just small PS, zero ZO, negative small NS, negative middle NM, negative big NL describe the size of input and output amount, the fuzzy reasoning table such as institute of table 1
Show.
1 variable step fuzzy controller fuzzy reasoning table of table
One Buck-Boost converter body is as rear class DC/DC converters, and adjustment output DC voltage is desired value, load circuit
Can be DC load or the DC power supply as inverter.Control chip passes through monitoring output DC voltage value, adjustment
The duty cycle of power switch pipe in One Buck-Boost converter body, realizes DC side voltage stabilizing.
A kind of generator protection system of the position detection based on linear Hall, using linear Hall detection of straight lines generator
Position signal, monitor operating status of the generator in wave in real time, and with the guarded by location threshold value comparison under extreme weather,
If the stroke that motor moves up and down exceeds threshold value, system is automatically stopped power generation, takes related safeguard measure.Specially：
(1) Hall sensor is installed in parallel in the end of the mover armature winding of linear electric generator, and any two is suddenly
That difference three/a pair of of pole span on locus, corresponding 120 degree of electrical angle difference, the output signal of the Hall sensor,
That is the sine voltage signal of three 120 degree of electrical angles of road mutual deviation, is input in DSP chips by signal sampling and modulate circuit, should
Dsp chip calculates sampled value, the electrical angle of any time mover present position can be obtained, according to electrical angle and pole span
Relation can obtain any time electric mover present position, monitor the operating status of generator.
Claims (8)
- A kind of 1. direct-drive type wave-activated power generation maximal power tracing algorithm, it is characterised in that：Gathered and sent out by voltage-current sensor Electric moter voltage electric current simultaneously calculates generator power, and by adjusting generator electromagnetic force, searching meets dP/dFe=0 this condition Maximum power point, adjusts the duty cycle of each bridge arm switching tube of three-phase controlled rectifier, changes output voltage electric current；Wherein, FeFor the electromagnetic force of permanent magnet linear generator, it is described as：In formula (1), p is the number of pole-pairs of motor；ΨsFor the stator magnetic linkage of motor；Ld、LqThe respectively d-axis of motor, quadrature axis electricity Sense；ΨpFor rotor permanent magnet magnetic linkage；δ is stator, the angle of mover magnetic linkage.
- A kind of 2. direct-drive type wave-activated power generation maximal power tracing algorithm according to claim 1, it is characterised in that：Using mould Paste variable step track algorithm and find the corresponding electromagnetic force of maximum power point, specific implementation step includes：Step 1, determine electromagnetic force scope：According to the peak acceleration a of system designmax, sea data, electric machine structure size meter It can be regarded as with the vertical force F on generatorhEmpirical value scope, the model of both direction electromagnetic force up and down is determined according to formula (19) Enclose：Fe+Fh- Mg=Ma (19)Upwards during movement, electromagnetism force direction is downward, 0~F of electromagnetic force scopeup, using the variable step MPPT with fuzzy controller Algorithm is gradually reduced searching maximum power from maximum electromagnetic force and corresponds to electromagnetic force；When moving downward, electromagnetism force direction is upward, electromagnetism Power 0~Fdown of scope, it is same that electromagnetic force is corresponded to using the variable step MPPT algorithm searching maximum power with fuzzy controller；Step 2, using fuzzy controller, the input quantity of the fuzzy controller is adjacent difference power and difference power twice to the time Differential, establish fuzzy control rule, obtain output quantity electromagnetic force change step；As adjacent difference power Δ P twiceiDuring ＜ 0, Take at this time electromagnetic force as the corresponding electromagnetic force of maximum power point.
- A kind of 3. direct-drive type wave-activated power generation maximal power tracing algorithm according to claim 2, it is characterised in that：The mould The membership function of fuzzy controllers input quantity uses the form of Gaussian function, and the membership function of output quantity uses trigonometric function shape Formula, the fuzzy rule, input and output are described using honest PL, center PM, just small PS, zero ZO, negative small NS, negative middle NM, negative big NL The size of amount.
- A kind of 4. tracking of direct-drive type wave-activated power generation maximal power tracing algorithm described in based on claims 1 to 3 any one System, it is characterised in that：Including permanent magnet synchronous linear generator, power circuit, detection circuit and control circuit；The power circuit includes three-phase controlled rectifier and One Buck-Boost converter body, the input of the three-phase controlled rectifier End is connected with permanent magnet synchronous linear generator electric energy output end, and the output terminal of the three-phase controlled rectifier is through dc-link capacitance One Buck-Boost converter body is followed by, the output terminal of the One Buck-Boost converter body is connected with load；The detection circuit includes three-phase input current detection circuit, output current voltage detecting circuit and based on linear Hall Rotor position detection circuit, the return value based on detection circuit signal provide controlled quentity controlled variable for permanent magnet synchronous linear generator；The control circuit includes the sampled value according to the detection circuit, calculates the duty cycle of each power switch pipe, controls work( The driving of the dsp chip and each power switch pipe of the work of rate circuit, protect circuit, and claims 1 to 3 is set in the dsp chip Maximal power tracing algorithm described in middle any one.
- A kind of 5. direct-drive type wave-activated power generation maximal power tracing system according to claim 4, it is characterised in that：It is described forever Magnetic-synchro linear electric generator uses Direct Thrust Control system, which includes Sliding Mode Variable Structure System With space vector modulation module SVM, the current sample of permanent magnet synchronous linear generator generator terminal obtained after calculating actual electromagnetic power and Magnetic linkage signal, it is poor to make with given electromagnetic force and magnetic linkage preset value, through Sliding mode variable structure system and space vector modulation module SVM, calculates the control signal of three-phase controlled rectifier switching tube.
- A kind of 6. direct-drive type wave-activated power generation maximal power tracing system according to claim 4, it is characterised in that：The base Include being used for the hall sensing for monitoring permanent magnet synchronous linear generator positional information in the rotor position detection circuit of linear Hall Device, signal sampling and modulate circuit, the Hall sensor be installed in parallel in the mover armature of permanent magnet synchronous linear generator around The end of group, any two Hall sensor differ three/a pair of pole span, corresponding electrical angle difference 120 on locus Degree, the output signal of the Hall sensor are input in dsp chip by signal sampling and modulate circuit, are obtained any time and are moved The electrical angle of sub- present position, any time electric mover present position, monitoring hair are obtained according to the relation of electrical angle and pole span The operating status of motor.
- 7. based on a kind of permanent magnet synchronous DC of direct-drive type wave-activated power generation maximal power tracing system according to claim 5 Generator Direct Thrust Control system, it is characterised in that：Including Sliding Mode Variable Structure System and space vector modulation module SVM, actual electromagnetic power and magnetic linkage signal are obtained after the three-phase current sampling calculating of permanent magnet synchronous linear generator generator terminal, and given Electromagnetic force and magnetic linkage preset value make it is poor, through Sliding mode variable structure system and space vector modulation module SVM, it is controllable to calculate three-phase The control signal of rectifier switch pipe.
- 8. based on a kind of generator protection system of direct-drive type wave-activated power generation maximal power tracing system described in claim 6, It is characterized in that：Including the Hall sensor, signal sampling and modulate circuit for monitoring permanent magnet linear generator positional information, The Hall sensor is installed in parallel in the end of the mover armature winding of permanent magnet synchronous linear generator, and any two Hall passes Sensor differs three/a pair of pole span on locus, and corresponding electrical angle differs 120 degree, the output signal of the Hall sensor It is input to by signal sampling and modulate circuit in dsp chip, which calculates sampled value, can obtain any The electrical angle of moment mover present position, the position according to residing for electrical angle and the relation of pole span can obtain any time electric mover Put, monitor the operating status of generator.
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| CN111082683A (en) * | 2019-12-23 | 2020-04-28 | 湖南纵横空天能源科技有限公司 | Circuit applied to low-voltage and high-current occasions based on GaN device |
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