state vector space

It deduces the state of each power electronics device in UPFC by means of the voltage space vector pulse width modulation method.

论文利用电压空间矢量脉宽调制法推导出UPFC各桥臂电力电子器件的开关状态。

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The mathematical model of 3-phase PWM VSR using state space average method is studied under the high swith frequence at frist, then the pulse time ratio is given using the space vector technology.

在高开关频率下，应用状态空间平均法建立三相电压型PWMVSR数学模型，利用矢量合成原理，推算出各相开关函数占空比。

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From Maxwell equations for free space and by converting the amplitudes in Fourier expansion of the vector potential into operators according to quantisation correspondence, this paper obtains Hamiltonian operator, which quantises the electromagnetic field, and introduces the number state representation for the field.

本文从真空中麦克斯韦方程组出发，通过把矢势的Fourier展开式中的振幅按照量子化对应化为算符，得到了哈密顿算符，从而实现了电磁场的量子化，同时给出了电磁场的数态描述。

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