power-factor造句
例句與造句
- Methods of power - factor - measurement for low - voltage inductive test circuits
低壓感應(yīng)測試電路功率因數(shù)的測量方法 - Unity power - factor test
功率因數(shù)等于1的電機(jī)試驗 - Determination of power - factor and permittivity of insulating materials hartshorn ward method
絕緣材料的功率因子與電容率的測定 - A kind of new high efficiency three - phase power - factor - correction is proposed and realized by integrate - reset - control circuit
5 .首次提出了一種新型高效率三相功率因數(shù)校正拓?fù)洌⒉捎梅e分復(fù)位控制方法實現(xiàn)。 - Harmonic current has caught high recognition . power - factor - correction is an effective method to reduce harmonic current in power grid
諧波污染已引起各國的高度重視，功率因數(shù)校正( pfc )是治理諧波的一種有效方法。 - It's difficult to find power-factor in a sentence. 用power-factor造句挺難的
- It is proved that this kind of power - factor - correction has the features of simple control circuit , good control result and high efficiency
在理論研究的基礎(chǔ)上進(jìn)行了仿真研究，仿真結(jié)果證明了其具有控制簡單可靠、功率因數(shù)校正效果好、系統(tǒng)效率高的特點(diǎn)。 - A new intelligent power - meter ic - cs5640a is used to sample data in designing , including voltage , current , active - power , power - factor , reactive - power
在設(shè)計中使用新型的智能電表芯片cs5460a作為數(shù)據(jù)采集芯片，實現(xiàn)了對于電網(wǎng)中電壓、電流有效值等多種電參數(shù)的測量和監(jiān)視。 - According to the characters of the model of the optimization of the vehicle main form design , the muti - objective problem is resolved by power - factor method , the constrains problem by penalty function technique
結(jié)合遺傳算法，采用懲罰函數(shù)法對約束條件進(jìn)行處理，設(shè)計了實數(shù)編碼的模擬退火懲罰函數(shù)法優(yōu)化程序模塊。 - The dq equivalent circuit model of three - phase three - switch boost type power - factor - correction is proposed firstly , the completely dc steady - state analysis and ac small - signal analysis are done and the dc operation points and ac transfer functions are acquired
3 .首次提出三相三開關(guān)boost型功率因數(shù)校正的dq等效電路模型，并對其進(jìn)行了完整的直流穩(wěn)態(tài)和交流小信號分析，得到直流工作點(diǎn)和交流傳遞函數(shù)。 - The integrate - reset - control three - phase six - switch boost power - factor - correction is proposed . according to the equivalent circuit in the a - b - c coordination , the control equations are deduced in detail . some simulations and experiments are done to validate the analysis
根據(jù)三相六開關(guān)boost型功率因數(shù)校正在a - b - c坐標(biāo)系下的數(shù)學(xué)模型，采用平均法，得到實現(xiàn)單位功率因數(shù)所需的控制方程并用積分復(fù)位控制電路加以實現(xiàn)。 - The current harmonics it produces deteriorate the quality of the power source , which eventually affect the other equipment . in order to solve this problem and meet the requirement for standards , such as iec 555 - 2 , iec 1000 - 10 - 3 - 2 , ieee 519 , and iec 6100 - 3 - 2 , a lot of power - factor - correction circuits , as the best way to improve power quality , have been developed
所產(chǎn)生的諧波污染了電源的質(zhì)量，并最終干擾其它電氣設(shè)備的正常工作，為了解決這一問題以滿足諸如iec555 - 2 、 iec1000 - 10 - 3 - 2 、 ieee519 、和iec6100 - 3 - 2等標(biāo)準(zhǔn)的要求，許多功率因數(shù)校正變換器作為解決這一問題的最佳方法被研制出來了。 - Principle of dc - dc flyback converter , technique of single - stage power - factor - correction and lead - acid battery charge are analyzed and studied . the steady principle of these ac / dc converters and the design criterions of key circuit parameter are analyzed in detail
對構(gòu)成這類變換器的三大關(guān)鍵技術(shù)? ?反激dc - dc變換技術(shù)、單級功率因數(shù)校正技術(shù)和鉛酸蓄電池充電技術(shù)進(jìn)行了分析研究，詳細(xì)論述了這類單級不間斷高功率因數(shù)ac dc變換器的穩(wěn)態(tài)工作原理和關(guān)鍵電路參數(shù)的設(shè)計準(zhǔn)則。 - These studies in the thesis have been done as follows : it is proved that if the three - phase single - switch boost type power - factor - correction can work in continuous - current - mode , its power factor can not reach unity . therefore , it is not qualified for high power and high requirement application . according to the ac side equivalent circuit of the three - phase three - switch boost type power - factor - correction , the equations to realize unity power factor have been deduced and realized by integrate - reset - control circuit
本論文把積分復(fù)位控制成功應(yīng)用于三相功率因數(shù)校正技術(shù)中，作了以下幾方面的研究： 1 .從理論上證明了三相單開關(guān)boost型pfc即使工作在ccm ，其功率因數(shù)也不能達(dá)到1 ，在大功率和對功率因數(shù)校正能力要求較高的場合，三相單開關(guān)boost型pfc達(dá)不到要求， 2 .根據(jù)三相三開關(guān)boost型功率因數(shù)校正交流側(cè)的等效電路，推導(dǎo)出實現(xiàn)單位功率因數(shù)所需的控制方程，并用積分復(fù)位控制電路進(jìn)行實現(xiàn)，在理論研究的基礎(chǔ)上進(jìn)行了仿真研究。