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A novel compensating method is provided utilizing the stator currents decoupling and the linearization of the angle interval of current vectors.Based on the performance index of voltage utilization ratio, total harmonic distortion, switching loss and etc, various PWM methods have been introduced.

本文详细分析了逆变器输出的非线性特性及影响因素，重点对零电流夹断现象及其机理进行深入的研究，针对电流过零区间的非线性畸变提出了利用定子电流解耦以及电流矢量角度区间线性化的补偿方法。

AlN MSM devices were fabricated on AlN epitaxial thin film deposited on GaN/Sapphire substrates using helicon sputtering system at the low temperature of 300°C. The device characteristic was found to be improved by in situ metallization of Al electrodes. The extremely low dark current (1.39pA at 20V), the ideal factor (1.0125) and the Schottky barrier height (0.916eV) are superior compared to those of AlN MSM in the literature. When the device was illuminated by the 150W D2 lamp, the ratio of the induced photocurrent to dark current is more than 2 orders of magnitude. The illumination effect also shows the linear relationship between the radiation power and the photo current for the MSM devices, indicating the potential applicability for deep UV sensors.

氮化铝金属-半导体-金属光侦测器则是用In situ metallization制程，利用低温回旋溅镀法在氮化镓/蓝宝石基板上沉积之氮化铝，再直接溅镀金属铝作为指叉电极，比较目前文献制作出来的氮化铝MSM元件，可得到很好的元件金半接面之理想因子1.0125，算出萧特基能障高度为0.916eV，并有很低的暗电流为1.39 pA，提升了元件的特性，使用150 W氘灯入射，光暗电流差距可到两个order，且元件之光电流与入射光功率呈线性，显示所制作之氮化铝MSM元件，很适合针对深紫外光波段侦测。

The paper introduces an improved harmonic and reactive current detecting method based on there-phase reactive current using instantaneous reactive power theory. By using matlab, simulation model is built, and the results show that this model can exactly detect harmonic and reactive current in time and it is feasible in DSP system.

本文在三相瞬时无功功率理论的基础提出了一种改进的单相无功电流检测算法，并建立了仿真模型，仿真结果表明：该算法可以及时、准确地检测出三相电路中的谐波电流和无功电流，同时也验证了此算法在DSP系统中的可行性。

Therefore,it is of great importance to measure the linear birefringence inside the optical current sensing head for the property enhancement of the optical current sensors.

线性双折射是光学电流传感头的重要光学参量之一，会明显影响光学电流传感器的性能，因此测量光学传感头内线性双折射的大小对于提高光学电流传感器的性能有重要意义。

To improve accuracy of detection of current direction, components of magnetizing current and torque current are transformed into two-phase stationary frame. Therefore compensating voltage vector can be decided according to the sector the current vector is locating.

为了提高电流极性检测的准确性，利用旋转轴系中的励磁电流和转矩电流分量经过坐标反变换，判断电流在两相静止轴系所处的扇区来决定需要施加的补偿电压。

A new type of overcurrent protection ,phase-sensitive overcurrent protection based on sampled value of current,is suggested in this paper.

针对中低压电网中过流保护存在灵敏度低的缺点，提出了一种新型微机式过电流保护即基于电流采样值的相敏过电流保护，并分析了它的基本原理、具体的实现方法及可靠性问题。

It verifies that the total three phase instantaneous power cannot remain constant in circuits with distort and unbalanced source.

文中所定义的相间流动的无功电流、三相电源与三相负载间流动的无功电流以及有功电流之间具有两两正交的关系。

On the basis of Landau-Lifshitz-Gilbert equation and Fokker-Planck equation,through analyzing the current induced magnetic switching and potential change,a new model to explain the potential barrier reducing is proposed.

在对称系综模型的Landau-Lifshitz-Gilbert和Fokker-Planck方程的基础上，分析了电流驱动磁动力学开关过程和电流引起磁势能的变化，提出一个新的电流感应磁势垒降低模型。

This digital inductance reflectoscope reflector is based on the rule that the voltage the electric current will increase after the inductance added, because the speed of the voltage the electric currents' increases is related with the inductance quantity after the inductance added, therefore we can survey the inductance the inductance by the inductance quantity the survey electric current achieved some predetermined number how much time it takes.

本数字电感测试仪以电感加上电压后电流增加的规律作为测量依据，因为电感加上电压后电流增加的速度与电感量相关，所以通过测量电流达到某一预定值所用的时间就能测量出电感的电感量。

This digital inductance reflectoscope reflector is based on the rule that the voltage the electric current will increase after the inductance added, because the speed of the voltage the electric currents%26rsquo; increases is related with the inductance quantity after the inductance added, therefore we can survey the inductance the inductance by the inductance quantity the survey electric current achieved some predetermined number how much time it takes.

本数字电感测试仪以电感加上电压后电流增加的规律作为测量依据，因为电感加上电压后电流增加的速度与电感量相关，所以通过测量电流达到某一预定值所用的时间就能测量出电感的电感量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。