查询词典 commutation switch

In this topology, the main switches are operated under ZVS due to commutation of the transformer magnetizing current and the parasitic drain-source capacitance.

在此转换器，其主要开关主要是利用变压器的激磁电流和开关本身内部的寄生电容的换向，使得主开关操作於零电压的模式底下。

In this dissertation, we construct the Bariev model with nine kinds of boundary fields by the matrices K_± defining the boundaries. And then the Lax operator is given in the form ofmatrix, as well as the basic quantities, e.g., the R -matrix, the monodromy matrices and the transfer matrices are defined. By using the expression of the local Lax operator of the model,the action of the monodromy matrices T, T~(-1), U_ on the pseudo-vacuum state is given outin detail. Furthermore, the main fundamental commutation relations are obtained through the reflection equations, the recursive n-particle state as well as the one-particle exact solution is given and the Bethe ansatz equations are found accordingly. Finally, we list the nesting boundary K matrices, which play a crucial role for obtaining the n-particle solution and finding the Bethe ansatz equations, the eigenvalues of the transfer matrices and the energy spectrum of the system by means of the nested algebraic Bethe ansatz method.

在这篇文章中，我们利用边界K_±矩阵构造出了具有九种边界场的Bariev模型，同时给出了该模型L算子的具体矩阵表示形式，并定义了R矩阵，monodromy矩阵以及转移矩阵；接着利用L算子的矩阵形式，给出了其对应monodromy矩阵T、逆矩阵T~(-1)作用到真空态上的值，并利用Yang-Baxter关系及反射方程得到了双行monodromy矩阵U作用到真空态上的值；然后利用反射方程通过复杂的计算得到了一系列重要的基本对易关系式，并给出了模型的递推的多粒子波函数、单粒子解及Bethe ansat方程；最后给出了模型的嵌套的边界K矩阵的具体形式，从而为运用嵌套Bethe ansatz方法求解该模型的多粒子解、Bethe ansatz方程以及系统的能谱打下了很好的基础。

A new type of topology is made to improve the current commutation performance by mutual inductance.

提出了一种可以改善SR电机换相性能的新型互感换相型拓扑结构。

Dynamic analysis shows that the system can get stable commutating voltage to attain the load-commutation if there is no nonperiodic transient current component in the rotor.

动态特性分析表明，只要不出现转子暂态电流，系统可获得稳定的换流电压而实现负载换流。

An input phase voltage is divided into a main range and a transition range in which new P, M, N conditions and PM, NP, MN transition conditions are defined, some null vector is selected and the condition combination sequence of bidirectional power switches are adjusted in each modulation period to realize the safe, reliable and rapid commutation and the stable operation of the matrix converter.

本发明属于矩阵变换器控制技术，为一种用于矩阵变换器的控制方法，通过把输入相电压划分为主区间和过渡区间、在过渡区间定义新的P、M、N状态和PM、NP、MN暂态以及在每个调制周期内选择特定的零矢量并调整双向功率开关状态组合顺序，实现矩阵变换器安全、可靠、快速换流和稳定运行。

Use the method of orthogonality is small commutation, gave out the estimation method that its divide form dimension.

利用正交小波变换的方法，给出了其分形维的估计方法。

By analyzing the general theory on commutation system and concentrating on the perfection of it, this paper tries to put forward some idea for enhancing the efficiency of the judicial operation to achieve the goal of penalty.

本文试图通过对减刑制度一般理论的分析，进一步研究完善减刑制度的方法，以期增强司法实践中的可操作性，更好地实现刑罚目的。

In the end, the penner points out that the overcharging voltage which confines the commutation capa- citance will be an important snbject for the research of its further development.

最后指出，限制换流电容器的过充电电压是今后发展逆导电流源的重要研究课题。

This thesis discusses principal issues of the matrix converter such as prime principle, control strategy, current commutation, its applications etc.

本文立论研究的目的是对矩阵式变换器基本原理、控制策略、开关换流、应用范围等基本性问题进行探索性研究工作。

This thesis discusses principal issues of the matrix converter such as prime principle, control strategy, current commutation, parameter selection and its applications etc.

本文研究的目的是对矩阵变换器基本原理、控制策略、开关换流、参数选择、应用范围等基本问题进行了探索性研究工作。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。