CN205489569U - Renewable sources of energy power generation system - Google Patents
Renewable sources of energy power generation system Download PDFInfo
- Publication number
- CN205489569U CN205489569U CN201620195663.8U CN201620195663U CN205489569U CN 205489569 U CN205489569 U CN 205489569U CN 201620195663 U CN201620195663 U CN 201620195663U CN 205489569 U CN205489569 U CN 205489569U
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- double
- fed induction
- rotor
- pwm
- induction machine
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Abstract
The utility model discloses a renewable sources of energy power generation system, including fan blade, double -fed induction machine and electric wire netting, double -fed induction machine and fan blade between be connected through the transmission shaft, double -fed induction machine one end hold for rotor output for stator output end, the other end, rotor output end be provided with two PWM converters, and two PWM converters are connected with double -fed induction machine through the sliding ring, two PWM converter one end still be provided with crowbar resistance, double -fed induction machine be connected with the electric wire netting, the utility model discloses double -fed induction machine stator side is through the direct connected to the grid of transformer, and the two -way flow of excitation and slip power has been realized to rotor current frequency, phase place, amplitude all on the two PWM converters of adjustable to the rotor side joint, and this outer net side PWM can keep direct current busbar voltage stable, and rotor side PWM can control with reactive power the stator side is meritorious indirectly.
Description
Technical field
This utility model relates to a kind of renewable energy generating system, belongs to field of energy utilization.
Background technology
Normally due to DFIG Wind turbines proportion in electrical network is less, when the grid collapses for ensureing Network Voltage Stability, the strategy that directly excise Wind turbines is usually taken, and along with DFIG Wind turbines installed capacity ratio in power system constantly increases, when line voltage rapid drawdown, if its direct off-the-line from electrical network will be caused the big ups and downs of electric network swim, even causing the problems such as large-area power failure, these all have a strong impact on the stable of power system and the recovery of electrical network.
Summary of the invention
(1) to solve the technical problem that
For solving the problems referred to above, the utility model proposes a kind of renewable energy generating system.
(2) technical scheme
Renewable energy generating system of the present utility model, including fan blade, doubly fed induction generator and electrical network；It is connected by power transmission shaft between described doubly fed induction generator and fan blade；Described doubly fed induction generator one end is stator output end, and the other end is rotor output end；Described rotor output end is provided with double-PWM frequency converter, and double-PWM frequency converter is connected with doubly fed induction generator by slip ring；Described double-PWM frequency converter one end is additionally provided with Crowbar resistance；Described doubly fed induction generator is connected with electrical network.
As preferential technical scheme, described slip ring is provided with three.
As preferential technical scheme, described stator output end is provided with grid side transformator.
As preferential technical scheme, described rotor output end is provided with rotor-side transformator.
As preferential technical scheme, described double-PWM frequency converter is made up of rotor-side PWM and net side PWM.
(3) beneficial effect
This utility model is compared with prior art, it has the advantages that renewable energy generating system of the present utility model, doubly fed induction generator stator side is directly incorporated into electrical network by transformator, rotor-side is received on rotor current frequency, phase place, the most adjustable double-PWM frequency converter of amplitude, achieve the two-way flow of excitation and slip power, this outer net side PWM can keep DC bus-bar voltage stable, and rotor-side PWM can be indirectly to stator side is meritorious and reactive power is controlled.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
1-fan blade；2-doubly fed induction generator；3-electrical network；4-power transmission shaft；5-stator output end；6-rotor output end；7-double-PWM frequency converter；8-slip ring；9-Crowbar resistance；10-grid side transformator；11-rotor-side transformator；12-rotor-side PWM；13-nets side PWM.
Detailed description of the invention
A kind of renewable energy generating system as shown in Figure 1, including fan blade 1, doubly fed induction generator 2 and electrical network 3；It is connected by power transmission shaft 4 between described doubly fed induction generator 2 and fan blade 1；Described doubly fed induction generator 2 one end is stator output end 5, and the other end is rotor output end 6；Described rotor output end 6 is provided with double-PWM frequency converter 7, and double-PWM frequency converter 7 is connected with doubly fed induction generator 2 by slip ring 8；Described double-PWM frequency converter 7 one end is additionally provided with Crowbar resistance 9；Described doubly fed induction generator 2 is connected with electrical network 3.
Wherein, described slip ring 8 is provided with three；It is provided with grid side transformator 10 on described stator output end 5；It is provided with rotor-side transformator 11 on described rotor output end 6；Described double-PWM frequency converter 7 is made up of rotor-side PWM 12 and net side PWM 13.
Renewable energy generating system of the present utility model, doubly fed induction generator stator side is directly incorporated into electrical network by transformator, rotor-side is received on rotor current frequency, phase place, the most adjustable double-PWM frequency converter of amplitude, achieve the two-way flow of excitation and slip power, this outer net side PWM can keep DC bus-bar voltage stable, and rotor-side PWM can be indirectly to stator side is meritorious and reactive power is controlled.
Embodiment described above is only to be described preferred implementation of the present utility model, is not defined spirit and scope of the present utility model.On the premise of without departing from this utility model design concept; various modification that the technical solution of the utility model is made by this area ordinary person and improvement; protection domain of the present utility model all should be dropped into, the technology contents that this utility model is claimed, all record in detail in the claims.
Claims (5)
1. a renewable energy generating system, it is characterised in that: include fan blade, doubly fed induction generator and electrical network；It is connected by power transmission shaft between described doubly fed induction generator and fan blade；Described doubly fed induction generator one end is stator output end, and the other end is rotor output end；Described rotor output end is provided with double-PWM frequency converter, and double-PWM frequency converter is connected with doubly fed induction generator by slip ring；Described double-PWM frequency converter one end is additionally provided with Crowbar resistance；Described doubly fed induction generator is connected with electrical network.
Renewable energy generating system the most according to claim 1, it is characterised in that: described slip ring is provided with three.
Renewable energy generating system the most according to claim 1, it is characterised in that: it is provided with grid side transformator on described stator output end.
Renewable energy generating system the most according to claim 1, it is characterised in that: it is provided with rotor-side transformator on described rotor output end.
Renewable energy generating system the most according to claim 1, it is characterised in that: described double-PWM frequency converter is made up of rotor-side PWM and net side PWM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195663.8U CN205489569U (en) | 2016-03-15 | 2016-03-15 | Renewable sources of energy power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195663.8U CN205489569U (en) | 2016-03-15 | 2016-03-15 | Renewable sources of energy power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205489569U true CN205489569U (en) | 2016-08-17 |
Family
ID=56656575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620195663.8U Expired - Fee Related CN205489569U (en) | 2016-03-15 | 2016-03-15 | Renewable sources of energy power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205489569U (en) |
-
2016
- 2016-03-15 CN CN201620195663.8U patent/CN205489569U/en not_active Expired - Fee Related
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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: 20160817 Termination date: 20190315 |