低噪聲變壓器 的英文怎麼說
中文拼音 [dīzàoshēngbiànyāqì]
低噪聲變壓器
英文
low noise lever transformer-
In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method
在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter
該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時，能拓寬零電壓開關的范圍，使變換器在較寬的負載變化范圍內都能實現軟開關。In the system, the low voltage power line is the first signal tunnel without any other relay equipments between customer terminal and substation collector, public telephone line serves as the second signal tunnel between substation and management center computer. as a breakthrough of conventional concept of electricity meter, this thesis initiate a new concept, namely, intelligent power customer terminal ( shortly, customer terminal ), which is developed with spread spectrum plc communication functional and possesses many advanced functions, such as, in addition to electric energy acquisition, guarding against electricity pilfering, preventing wrong connection, protecting malfunction, remote communication ( for example, remote power supply or halt, remote configuration of electricity meter, remote load control, etc ), and so on
本文首先系統地總結了目前國內外低壓電力網數據傳輸技術的研究現狀和存在的問題，在此基礎上，從理論上論證了在低壓電網上應用擴頻載波數據通信技術的可行性和優越性，並重點論述了擴頻載波技術抗電力線噪聲干擾的機埋；本文提出了一個新穎的基於低壓電力線擴頻載波通信技術的集中遠抄系統的總體方案，即由用戶終端、集中器和電能管理系統所組成的網路系統，其中，用戶終端到配變集中器用低壓電力線作為通道，中間無需其他硬體中繼設備，集中器到電能管理系統用公用電話網作為通道。Low voice of high class wreath type power transformer
高級低噪聲環型功率變壓器Low in high class a wreath type power transformer
高級低噪聲環型功率變壓器We used the method of experiment to change the cavity volume of muffler to improve extinction character and resonance vibration of gas column and to reduce noise of compressor. and the method has characteristics of simple and high speed and reduce defects of common metheods. using four - load method to analyze mufflers, the dissertation designs new
提出了對滾動轉子壓縮機消聲器採用填充粘土實驗試湊的方法改變消聲器結構，進而改變壓縮機消聲器消聲特性，降低壓縮機排氣噪聲，該測試評價方法具有簡易性和速度快的特點，減少了常用方法的缺陷。Dc / dc transfer, high efficient and less noise, meet the different voltage and current need by each module. the mts use isolated dc / dc module to provide power for dilapidation detectors, avoiding lightning strike
Dc dc轉換採用了高效率、低噪聲的dc dc變換電路滿足各模塊的電壓和電流需要；終端採用了隔離dc dc模塊為崩塌傳感器提供電源，防止雷擊對終端其它模塊的影響。Low voice of high class wreath type transformer
高級低噪聲環型變壓器High class transformer of low noise wreath type
高級低噪聲環型變壓器Low noise lever transformer
低噪聲變壓器分享友人