frequency n. 1.屢次,頻仍,頻繁。 2.(脈搏等的)次數(shù),出現(xiàn)率;頻度;【物理學(xué)】頻率,周率。 audio frequency音頻。 a high [low] frequency高[低]頻。 the frequency of earthquakes in Japan 地震在日本的頻繁發(fā)生。 mean [median] frequency中頻。 resonance [resonant] frequency諧振頻率,共振頻率。 ultrahigh frequency超高頻。 ultralow frequency超低頻。 very high frequency甚高頻。 very low frequency甚低頻。
But the increase of switching frequency results in higher switching loss 而傳統(tǒng)變換器開關(guān)頻率的提高必然帶來開關(guān)損耗的增加。
In order to minimize size and weight of the converters , switching frequency must be increased 為了減小變換器的體積和重量,必須提高開關(guān)頻率。
Sfvc is a simple control system that works at fixed frequency and achieves good effect under low switch frequency 采用了固定步長,在開關(guān)頻率不高時仍能取得較好的控制效果。
This results in large ripples in the torque and the stator flux linkage , and nonconstant switching frequency 這將導(dǎo)致轉(zhuǎn)矩和定子磁鏈較大的脈動以及逆變器開關(guān)頻率的不恒定。
The circuit of this scheme is simple and novel , which can be used to obtain the continuously variable switching frequencies 該方案電路簡單新穎,可利用其獲得連續(xù)變化的開關(guān)頻率。
But the switching loss is increased as the switching frequency is improved and so the converter efficiency is decreased 但隨著開關(guān)頻率的提高,硬開關(guān)的開關(guān)損耗增加,變換器的工作效率隨之下降。
If rosc pin series a resister to vdd , or connect a capacitor to vss , the switching frequency can be adjusted 切換頻率是由osc頻率決定,以rosc腳串聯(lián)電阻到vdd ,可調(diào)整切換頻率,電阻值減少,頻率增加。
Output over - voltage protection and a 1mhz switching frequency allow for the use of small , low cost external components 內(nèi)部過壓保護(hù)電路和1mhz的開關(guān)頻率使得用戶可以選用體積更小、成本更低的外部元件。
The high switching frequency allows the use of small surface - mount capacitors , saving board space and reducing cost 高的開關(guān)頻率允許選用小的表面陶瓷電容,可節(jié)省板級面積、降低成本和減小輸出電壓紋波。
Switching frequency and error of current tracking are estimated , so resolve how to limit the frequency as setting parameter 對電流控制兩態(tài)調(diào)制逆變器的開關(guān)頻率、電流跟蹤誤差作出了估算,解決了參數(shù)設(shè)計(jì)時如何限定開關(guān)頻率的問題。