CN205681359U - New single-phase self-excitation wind power generation plant - Google Patents
New single-phase self-excitation wind power generation plant Download PDFInfo
- Publication number
- CN205681359U CN205681359U CN201620118089.6U CN201620118089U CN205681359U CN 205681359 U CN205681359 U CN 205681359U CN 201620118089 U CN201620118089 U CN 201620118089U CN 205681359 U CN205681359 U CN 205681359U
- Authority
- CN
- China
- Prior art keywords
- excited
- phase
- phase self
- excitation
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a kind of New single-phase self-excitation wind power generation plant.Wherein, three phase squirrel cage motor, fixed excitation electric capacity and adjustable excited electric capacity the adjustable single-phase self-excited dynamo of excitation is collectively formed；Adjustable excited electric capacity is by fixing capacitance and adjustable capacitance two parts form, and capacitance adjusts and realized by the regulation and control of IGBT dutycycle；AC load is in parallel with two-way PWM converter, and with generator unit stator winding coupled；Two way convertor and accumulator constitute the guiding mechanism of generator voltage frequency, and control saturated by limited time at adjustable excited capacitance voltage, Collaborative Control electromotor port voltage, use single-phase voltages based on 90 degree of phase shifts and Current Decoupling strategy, thereby complete meritorious and reactive current reference Tracking Control Strategy, watt current realizes with reference to by frequency setting PI tracking control unit, and reactive current is arranged with reference to by voltage magnitude PI tracking control unit, and its value is that PI control output exceedes saturated restriction part.
Description
Technical field
This utility model relate to a kind of New single-phase self-excitation wind power generation plant, especially one be applied to remote districts with
And the independent operating New single-phase self-excitation wind power generation plant without electric energy supply island.
Background technology
Along with being on the rise of energy crisis and environmental pollution, regenerative resource research obtains scientific research personnel's extensive concern,
The especially electrical network such as remote mountain areas and island cannot touch region, and electric energy supply problem the most seriously restricts local resident and the people that guards the frontier
The raising of member's quality of life.The small wind of independent operating is to solve the problems referred to above effective means, and be widely used at present is small-sized
Wind-powered electricity generation is New single-phase self-excitation wind power generation plant, and it is typically converted by threephase asynchronous, has compact conformation, dimension
Protect conveniently, the advantage such as fault-tolerant ability with low cost and self-is strong.Threephase asynchronous typically reduces 20%-25% power etc.
Level can use as single-phase self-excited dynamo, and engine health runs and must provide for sufficient excitation, and makes rotor speed surpass
Cross air gap and rotate magnetic linkage.It addition, the greatest drawback of self-excitation wind-powered electricity generation to be voltage regulation capability poor, port voltage is turned by electromotor
The impacts such as speed, exciting capacity and load current are prone to fluctuation.To this end, compensate and segmentation based on " C-2C " asymmetry excitation
Formula additional issue two kinds of compensation policies of shunt capacitance can solve voltage pulsation, but cannot realize the voltage soft readjustment under the fluctuation of load；
The control strategy adding off-load regulation and control based on non-controllable rectification can be based on load and generator power, and real-time matching electromotor exports
Power, it is ensured that voltage stabilization, but non-controllable rectification produces harmonic wave interference, and electromotor and load power supply quality are all brought shadow
Ring；Based on the most double PWM converter control methods, voltage can be realized and frequency accurately controls, but cost is of a relatively high；Separately
Outward, wind energy self is intermittent and undulatory property makes generator output voltage, frequency and output random fluctuation, it is impossible to guarantee to bear
Carry power supply quality, further increase self-excitation electricity generation system and control difficulty.
Summary of the invention
This utility model is for not enough present in above-mentioned technology, it is provided that a kind of New single-phase self-excitation wind-power electricity generation dress
Put.
This utility model is noteworthy characterized by: include single-phase self-excited dynamo, wind turbine, two switching switches, two-way PWM
Current transformer, accumulator and AC load；Single-phase self-excited dynamo is by three phase squirrel cage motor, fixed excitation electric capacity and adjustable encourages
Magnetocapacitance collectively forms, the internal star-like connection of three phase squirrel cage motor stator winding, winding once two fixed excitation electric capacity with around
Group two series connection, and extract the line output N line as single-phase self-excited dynamo in the middle of fixed capacities out two, winding three as single-phase from
Exciting the L line of motor, L and N line is collectively as single-phase self-excited dynamo output port；Adjustable excited electric capacity is arranged on winding three He
Between winding two, it is used for adjusting generator excitation；Two-way PWM converter AC via switching switch two and AC load with also
Connection, through switching switch one and the coupling of single-phase self-excited dynamo output port；Two-way PWM converter DC side is connected with accumulator,
Constitute single-phase self-excited dynamo output voltage frequency and the guiding mechanism of amplitude, and after adjustable excited Capacity control is saturated,
Collaborative Control single-phase self-excited dynamo output voltage.When wind-force abundance, two-way PWM converter operates in rectification mode, and with
Guarantee that electric voltage frequency is constant for target, the unnecessary electric energy be stored in accumulator of dissolving；When wind-force deficiency, two-way PWM converter
Operate in inverter mode, and to guarantee that load voltage frequency is constant for target compensation vacancy power；When calm, two-way PWM becomes
Stream device will be output as key load with constant frequency/constant voltage mode inversion and provide electric energy；When batteries to store energy reaches lower limit, wind-force
Electromotor will operate in variable-frequency variable-voltage state, and with capture maximal wind-energy as target, adjusting rotation speed of fan is accumulator charging.
On rear side of described self-excitation wind-driven generator, alternating voltage and current sensor are set, and by digital signal processor
Analog-digital converter collection embedded for DSP28035 and Filtering Processing, thereby carry out wind energy maximum capture；In combination with software phlase locking
Loop technique obtains port voltage frequency in real time.
Described adjustable excited electric capacity, according to electromotor port voltage, changes IGBT (insulated gate gate transistors) duty in real time
Ratio, changes electromotor port capacitive reactance, adjusts in conjunction with two-way PWM converter reactive power, jointly completes electromotor port voltage steady
Fixed.Wherein reactive power adjusts main based on adjustable excited electric capacity, only after its control is saturated, just starts two-way PWM and becomes
The idle adjustment function of stream device, otherwise reactive current is set to 0, makes reversible transducer adjust electric voltage frequency to greatest extent.
Described two-way PWM converter exist excitation supply mode, constant frequency rectification energy storage mode, constant frequency compensator inverter mode,
Five states such as constant frequency and constant voltage inversion mode and variable-frequency variable-voltage Wind energy extraction mode, effectively solve self-excited dynamo startup and build
Load power supply quality is affected by pressure, voltage magnitude and the problem such as frequency fluctuation and wind energy undulatory property.
Described two-way PWM converter need to arrange current sensor, detects input and output inductive current；Voltage is set
Detecting battery tension and electric current with current sensor, charging and discharging currents is also thereby entered by real-time judge battery condition
Row amplitude limit, thereby changes two-way PWM converter duty simultaneously.
Advantage of the present utility model:
1) three phase squirrel cage motor, fixed excitation electric capacity and adjustable excited electric capacity is used to collectively form single-phase self-excitation sensing
Electromotor, has operational reliability height, easy care, the advantage such as cheap, is especially suitable for remote districts.
2) AC load is connected with single-phase self-excitation influence generator stator winding, eliminates traditional structure commutator and inversion
Device, though voltage and frequency are controlled by two-way PWM converter in parallel, but power grade is greatly reduced, and greatly reduces equipment and becomes
Basis and maintenance cost, improve electricity generation system practicality.
3) the single-phase self-excited dynamo port voltage being made up of adjustable excited electric capacity and two-way PWM converter and frequency
Control mechanism, efficiently solves self-excited dynamo port voltage and frequency is difficult to effective control problem；Adjustable excited capacitance structure
Flexible can adjust load both sides capacitive reactance, make electromotor build a self adaptation excitation system, this system can take into full account electromotor
Symmetrical operation and the problem such as load voltage is constant.
Accompanying drawing explanation
Fig. 1 is New single-phase self-excitation wind power generation device structure figure；
Fig. 2 is New single-phase self-excitation wind power generation plant control strategy flow chart；
Fig. 3 is New single-phase self-excitation wind power generation plant control structure figure；
Detailed description of the invention
1) New single-phase self-excitation wind power generation plant (such as Fig. 1) includes wind turbine machine (1), change speed gear box (2), star-like
Connect squirrel-cage motor, fixed excitation electric capacity (11,12), adjustable excited electric capacity (5), two-way PWM converter (8), accumulator
(10), single phase ac load (9), SW1 (6), SW2 (15) etc. form.The most adjustable excited electric capacity is made up of two shunt capacitances, its
In a branch road electric capacity by IGBT control, by Q5Dutycycle adjusts and realizes, and is mainly used in generator reactive power and compensates；SW1 and SW2
Being two A.C. contactors, when wind speed is more than threshold wind velocity, SW1 Guan Bi, SW2 disconnect, fan starting；And time calm, SW1 breaks
Open, SW2 closes, and the independent inversion of accumulator is load supplying；Two-way PWM converter can be operated in rectification or inverter mode, mainly
For controlling electromotor port voltage Vpcc frequency-invariant, the most also when adjustable excited capacitance voltage controls saturated, assist
Become electromotor port Control of Voltage.
2) can to run excitation supply mode, constant frequency rectification energy storage mode, constant frequency inverse for New single-phase self-excitation wind power generation plant
Become five states (such as Fig. 2) such as compensating mode, constant frequency and constant voltage inversion mode and variable-frequency variable-voltage Wind energy extraction mode.Wherein, excitation
Supply mode starts for self-excitation wind-driven generator, and two way convertor small-power inversion is output as electric capacity charging, carries for electromotor
For excitation, promote the flexible quickly startup of blower fan, by electromotor port voltage increase to rated voltage；Constant frequency rectification energy storage mode,
When wind generator system starts under extraneous excitation supply, and blower fan capture power is more than bearing power, the most two-way PWM unsteady flow
Device is constant as target with electric voltage frequency, controls blower fan surplus power and stores to accumulator, and two-way PWM converter is operated in rectification shape
State；Constant frequency compensator inverter mode, when blower fan capture power is less than bearing power, and two-way PWM converter will be constant with electric voltage frequency
For target, making up a deficiency power for AC load, two-way PWM converter is operated in inverter mode, and detects accumulator terminal in real time
Mouth voltage, when accumulator port voltage reaches battery tension lower limit, wind power system will operate in variable-frequency variable-voltage Wind energy extraction
Mode, now to capture wind energy and accumulators store energy to greatest extent as main target, soft readjustment generator speed obtains
Peak power；Constant frequency and constant voltage inversion mode, when wind speed is less than threshold wind velocity, it is inverse that two-way PWM converter operates in constant voltage constant frequency
Change state, to guarantee load supplying demand.
3) control structure of New single-phase self-excitation wind power generation plant port voltage and frequency is as shown in Figure 3.Generator end
Mouth voltage Vpcc is first by 90 ° of orthogonal phase shifts of phase shifter, and obtains U based on the decoupling of d-q rotating coordinate systemdAnd Uq, wherein Ud=
Vpcc；Uq=2 π f ∫ Vpccdt；UqLow-pass filtered device LPF, PI controller and voltage controlled oscillator VCO obtain θ and f in real time, its
Middle θ is spin orientation angle；F is generator voltage frequency value.It is based on synchronously rotating reference frame that two-way PWM converter electric current controls
Being the independent PI uneoupled control realization of watt current and reactive current, watt current is with reference to IqrefIt is to be realized, i.e. by frequency by 17
With reference to frefPI tracing control arrange；And reactive current is with reference to IdrefThen realized by 16, i.e. based on UdrefPI tracking control unit gives
To arrange, when PI tracker unsaturation, Idref=0, and when PI tracker is saturated, reactive current is with reference to IdrefIt is then that PI is defeated
Excess of export supersaturation partial value；It is simultaneously based on UdrefPI tracking control unit and amplitude limiting controller real-time monitoring Q5Dutycycle, changes
Capacitive reactance in parallel effectively controls to realize electromotor port voltage；For reducing accumulator super-charge or deep discharge to its aging effects,
Based on the accumulator port voltage and current PI output violent change to watt current, after through Coordinate Conversion and SPWM modulation technique,
Obtain 4 IGBT and drive signal Q1-Q4, effectively control realizing frequency and voltage.
Claims (1)
1. a New single-phase self-excitation wind power generation plant, its feature includes single-phase self-excited dynamo, wind turbine, two switchings
Switch, two-way PWM converter, accumulator and AC load；Single-phase self-excited dynamo is by three phase squirrel cage motor, fixed excitation electricity
Holding and adjustable excited electric capacity collectively forms, the internal star-like connection of three phase squirrel cage motor stator winding, winding is fixed once two
Exciting capacity is connected with winding two, and extracts the line output N line as single-phase self-excited dynamo, winding in the middle of two fixed capacities out
Three as the L line of single-phase self-excited dynamo, L and N line is collectively as single-phase self-excited dynamo output port；Adjustable excited electric capacity sets
Put between winding three and winding two, be used for adjusting generator excitation；Two-way PWM converter AC is via switching switch two Hes
AC load is with in parallel, through switching switch one and the coupling of single-phase self-excited dynamo output port；Two-way PWM converter DC side and
Accumulator is connected, and constitutes single-phase self-excited dynamo output voltage frequency and the guiding mechanism of amplitude, and at adjustable excited electric capacity
Control saturated after, Collaborative Control single-phase self-excited dynamo output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118089.6U CN205681359U (en) | 2016-02-06 | 2016-02-06 | New single-phase self-excitation wind power generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118089.6U CN205681359U (en) | 2016-02-06 | 2016-02-06 | New single-phase self-excitation wind power generation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205681359U true CN205681359U (en) | 2016-11-09 |
Family
ID=57438334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620118089.6U Expired - Fee Related CN205681359U (en) | 2016-02-06 | 2016-02-06 | New single-phase self-excitation wind power generation plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205681359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231724A (en) * | 2020-02-27 | 2020-06-05 | 国网山东省电力公司潍坊供电公司 | Electric vehicle charging station operation control system and method |
-
2016
- 2016-02-06 CN CN201620118089.6U patent/CN205681359U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231724A (en) * | 2020-02-27 | 2020-06-05 | 国网山东省电力公司潍坊供电公司 | Electric vehicle charging station operation control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202889279U (en) | Brushless doubly fed motor excitation control device | |
| CN102684589B (en) | The control system of variable speed constant frequency birotor permanent magnetic wind generator system and method | |
| Mittal et al. | Battery energy storage system for variable speed driven PMSG for wind energy conversion system | |
| CN102868346A (en) | Brushless doubly-fed motor excitation control system and control method using same | |
| CN102709945B (en) | Energy-storage wind power generation system with squirrel-cage generator | |
| CN101510747A (en) | Excitation control system architecture and control method for marine diesel brushless double fed shaft generator | |
| CN104539206B (en) | Marine large-scale straight drive switching magnetic-resistance wind-driven generator power converter system | |
| US9683540B2 (en) | Electric unit for a pumped-storage power plant having components within and outside of an underground cavern | |
| CN102916446B (en) | Electric control system of asynchronous wind generating set | |
| CN103414209B (en) | DFIG direct current grid-connected power generation system based on RMC and torque control method of DFIG direct current grid-connected power generation system | |
| CN102255596A (en) | Off-grid double-fed wind power generation system and maximum wind energy capture method thereof | |
| CN101917013A (en) | Double-feed wind power generating system with energy storage function | |
| CN108988395B (en) | A kind of topological structure and control method of the directly driven wind-powered current transformer of vertical axis permanent magnet | |
| CN107947659B (en) | A kind of stator current sine control method of DFIG-DC system | |
| CN106786783A (en) | A kind of total power wind-electricity integration system and control method | |
| CN202455089U (en) | Megawatt-grade direct-driven type mouse cage asynchronous generator AC-DC-AC wind power generation system | |
| CN201774276U (en) | Energy management system for wind power generation | |
| CN101841169A (en) | Energy management system for wind power generation | |
| Elmorshedy et al. | Load voltage control and maximum power extraction of a stand-alone wind-driven PMSG including unbalanced operating conditions | |
| CN202737481U (en) | Topological structure of frequency-conversion-control wind power generation system | |
| CN113517683A (en) | Direct-current grid-connected double-fed wind power generation system with energy stored at rotor side and control method thereof | |
| CN205681359U (en) | New single-phase self-excitation wind power generation plant | |
| Kumar Bisoyi et al. | A review of the state of the art of generators and power electronics converter topologies for wind energy conversion system | |
| CN205141702U (en) | Double -fed aerogenerator low voltage ride through system | |
| CN201440646U (en) | Excitation control system structure for marine brushless doubly-fed shaft generator of diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20180206 |