doubly-fed motor 中文意思是什麼
doubly-fed motor
解釋
雙饋電動機-
Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed
論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。 -
The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization
而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。 -
Simulations for these two conditions prove validity of theoretical analysis. on the basis of this scheme, a new speed adjustment strategy about vector control of doubly fed motor based on rotor current vector fixing is given. it introduces the closed - loop of stator excitation current to the system, which increases two adjustment channels : speed and excitation adjustment
經理論分析可知，該方案中，由於轉子電流與磁鏈無法實現完全解耦，故僅在亞同步工況下有效，在超同步時則會因為調速系統不能自動校正轉子磁鏈幅值變化引起的橫向電流而使系統失去控制，無法達到穩定狀態。 -
A software method of detecting the angle of slip of a doubly - fed motor
雙饋電機轉差角的軟體檢測方法 -
Analysis of steady - state characteristic and excitation capacity for doubly fed ac excitation variable - speed induction motor
無刷雙饋電機穩態特性的解析分析 -
As this adjustable speed system of doubly - fed motor normally needs a bi - directional converter. it ' s control technique is complicated and it ' s cost is rather expensive
由於雙饋電機調速系統通常採用雙向變流器，控制技術復雜，成本較高，限制了它的應用。 -
Doubly - fed motor adjustable speed is an advanced technique, which can be used in the adjustable speed of motor and generator of variational speed and constant frequency, also can realize the adjustment of power factor at the stator
雙饋電機調速是一種先進的調速技術，可用於電機的調速和變速恆頻發電，並能實現電機定子側功率因數的調節。 -
For this reason, it ' s application will be restricted. this paper designs a circuit topology structure of multi - functional converter, which contains rectifier, chopper and inverter, it can function in soft - starting, chopping and doubly - fed adjusting speed for doubly - fed motor
本文設計了一種適用於雙饋電機多種運行狀態的多功能變流器的拓撲結構，它將整流器、斬波器與逆變器結合在一起，能完成電機的軟啟動、斬波、雙饋調速。 -
Speed effect on steady performance of doubly fed motor
雙饋電機運行速度對穩態性能的影響 -
This platform not only can be used for doubly - fed brush and brushless motor, but also can be done for variational speed and constant frequency wind - generators and hydro - generators. it shows that has a broad application foreground
此實驗裝置不僅適用於有刷雙饋調速，同樣也適用於無刷雙饋調速，而且可應用於變速恆頻風力和水利發電，有廣泛的應用前景。 -
Power flow in brushless doubly - fed machine under motor operation
大型雙饋風機穩態運行特性的模擬研究
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