single-phase alternating current 中文意思是什麼
single-phase alternating current
解釋
單相交流電-
Electricity meters - alternating - current single - phase static watt - hour telemeters of accuracy class 1 or 2
電表.精確級為1或2的交流單相靜態瓦時遙測計 -
On the railway of electrization, power supply mode is requested to be the single - phase alternating current
在鐵道電氣化牽引區段,牽引供電網採用單相工頻交流電供電方式。 -
Basically learn dc, alternating current way, lighting circuit, distribution circuit, transformer of odd, three - phase, dynamo job principle reachs operation method, the principle maintenance of electromotor of single - phase, three - phase reachs application, low - pressure electric equipment, electric power procrastinates move, electromotor maintains skill, brilliant brake canal can accuse rectification, electrical engineering appearance, the electron controls a technology, circuit of new light source, engine, principle of distribution ark job and installation technology
主要學習直流、交流電路,照明電路,配電電路,單、三相變壓器,發電機工作原理及操作方法,單相、三相電動機的原理維修及應用,低壓電器,電力拖動,電動機維修技巧,晶閘管可控整流,電工儀表,電子控制技術,新光源電路,發動機,配電櫃工作原理及安裝技術等。 -
Demarcation of single - phase alternating current circuit instantaneous reactive power
單相交流電路瞬時無功功率的界定 -
According to the following design theory : the dsp calculates in real time and produces three phases spwm waves to control the on or off of the 6 igbts in ipm respectively. ipm then inverts the commutated single phase direct current ( insulated gate bipolar transistor ) into three phases alternating current. when modulated signals of spwm are changed, the on - off time of switches also changes, so as to the voltage and frequency of output signals
本文提出了一種基於dsp (數字信號處理器tms320f240 )的通用的三相間接變頻電源系統,利用分段同步調製法和混合查表法,實時計算不同頻率下的采樣周期、電壓幅值、輸出脈寬,產生雙極性spwm波形,經驅動放大後用于ipm ( intelligentpowermodule )中的絕緣柵雙極型晶體管柵級驅動,以控制電源的輸出電壓和頻率,實現變頻電源的智能數字控制。
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