phase voltage中文什么意思

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1. Three kinds of the usual methods of rotor flux estimation are compared and analyzed , and the method of rotor flux estimation based on the voltage model is studied in detail . and the output phase voltage is reconstructed by means of the dc - bus voltage and the switching states of the inverter , the effect of the dead time and saturating voltage - drop of the switches on flux estimation is discussed . and the method of synchronizing instant speed identification is also studied deeply
   本文对三种常用的转子磁链观测方法进行了对比分析，在此基础上着重研究了基于电压模型磁链观测方法，分析了利用直流母线电压和逆变器三相开关管的状态进行输出电压重构方法，讨论了死区时间和开关管饱和压降对磁链观测结果的影响，深入研究了同步瞬时转速辨识方法。
2. Aiming at the unsymmetrical three phase voltages from inverter after a failure , the dissertation get the relationship among the positive sequence ( ps ) , negative sequence ( ns ) and the instantaneous symmetrical component of the ps , this build the foundation to detect the fault and to get the fault feature
   针对逆变器故障后的电压输出的不对称性，利用对称分量法对逆变器输出信号进行分析，获得了逆变器输出信号的数字信号模型，为变频调速系统的故障检测与故障特征提取奠定了基础。 3
3. Secondly , in order to make the motor commutate exactly , a fuzzy neural network is used - to estimate the rotor position . based on the relationship of voltage , current , flux linkage and corresponding position ( ) , a fnn is proposed whose structure and parameters are trained based on improved genetic algorithm . through measurement of the phase voltages and phase currents , the flux linkage can be figure out
   根据无刷直流电机中的电压、电流、磁通和转角之间的相互关系，构造一个基于遗传算法训练网络结构和参数的模糊神经网络，通过检测电机的相电压和电流计算出相磁通，然后利用计算出的相磁通和电流作为网络的输入，经网络运算后，得出电机转子的转角。
4. Because central potentials of four y windings in 12 - phase generator are not equal each other and there is no common reference inside the generator , it is difficult to identify the on / off of rectifying elements . in this paper , by using a mathematical model with line voltage substitute for phase voltage , the problem that there is no common reference in the 12 - phase generator with rectifier is solved . based on results of the studies on small prototype , 920kw charging generator applied in a submarine is improved in design , and therefore power oscillation with high magnitude when two generators are operating in parallel
   由于十二相发电机中四个y绕组的中点电位不等，电机内部没有公共参考点，从而在判断整流元件导通时，不能象三相同步发电机整流系统那样认为阳极电位最高或阴极电位最低的整流元件导通，本文采用了以线电压代替相电压建立十二相整流发电机的数学模型，从而解决了十二相发电机无公共参考点的问题。
5. Computation method based on fast fourier transformation ( fft ) is studied deeply , whose measurement accuracy is 0 . 2s . the computing indexes involve voltage , current , power , frequency , phase , electric power , the harmonic ratio and the total harmonic distortion ( thd ) of phase voltage and phase current
   深入研究了测量精度为0 . 2s级的基于快速傅立叶变换( fft )的电压、电流、功率、频率、相位、电能等电力参数和各相电压电流各次谐波含量、谐波含有率、谐波总畸变率的计算方法。