direct current load 中文意思是什麼
direct current load
解釋
直流負載-
Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented
模擬和實驗結果表明該方法的主要優點有：不需使用乘法器進行信號調制，調制信號採用與電網電壓同步的優化特定脈沖，其檢測精度只與同步相位有關，而與電網電壓幅值無關；降低了對輸入低通濾波器的通頻帶要求，直流和偶次諧波分量對檢測精度沒有影響；突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。 -
The investigation of the measure principles of direct current attenuation method, voltage integral method, and direct load method
較為深入的研究了直流衰減法、電壓積分法和直接負載法的測試原理。 -
Through establishing three mathematics models including the movement equation of the mechanical and electrical transmission system, the control of the load and the sliding in stable status, direct - current - brake of ac motor, this paper ascertained the range of the frequency value of drive motor and the efficiency of transmission system, calculated the efficiency of load motor in stable status and the moment of load motor in braking. this paper completed the design of the mechanical part of inertia brake test platform and provides a tool for the measurement of the inertia brake parameters
本文還通過建立慣性制動器試驗臺的包括機電傳動系統的運動方程、穩態運行時負載與轉差率控制、交流電動機直流制動在內的三個數學模型，確定驅動電機的頻率取值范圍和傳動系統的傳動效率，驗算慣性制動器穩態運行時負載電機軸功率和慣性制動器制動時負載電機軸力矩，完成慣性制動器試驗臺設計中的機械部分，為慣性制動器各參數的測量提供工具。 -
Firstly, the experimental phase current and input power data obtained from load test are employed to estimate the parameters in ii rated condition. then, the phase current and input power data in locked rotor condition are used to track the variation of the parameters of the secondary coil with slip frequency. the classical method and the direct modification method are also used to estimate the parameters of the induction machine in comparison with this technique
首先利用了負載試驗的定子電流和輸入功率數據來識別額定工況下的電機參數，然後又使用了堵轉時的定子電流、輸入功率數據來識別電機二次繞組參數隨轉差頻率的變化，並與傳統參數測試方法和直接修正參數法進行了比較。 -
Analysis of unusual direct - current resistance with load voltage transformer
有載調壓變壓器直流電阻異常分析 -
The equipments and methods were on the level of manual operation, hi this paper, author paid a systemic research into three kinds of measure means : direct current attenuation method, voltage integral method, and direct load method ; theoretically analyzed the measure methods of synchronous armature reaction reactance, and even developed a test system to automatically measure the synchronous armature reaction reactance
作者對直流衰減法、電壓積分法和直接負載法這三種測試方法的測試原理進行了較為深入、系統的研究，從理論上分析了同步電樞反應電抗參數的測試方法，並在此基礎上開發出能夠自動進行同步電樞反應電抗參數測試的系統。
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