查询词典 phase inverter

DC motor complex large-scale three-phase power transformer deep-trough three-phase asynchronous motor DC motor DC motor single-phase squirrel-cage induction motor.Three-phase commutator motors, single-phase motor power sub-phase squirrel-cage three-phase asynchronous electric double mine explosion-proof motor with squirrel-cage three-phase asynchronous motor rotor cup AC servo motor drives three-phase asynchronous motor principle of rotating magnetic field Generation and transmission of three-phase induction motor winding three-phase stepper motor 165mm Three-phase three-phase synchronous motor stepping motor JFB power generator rotor rectifier type AC synchronous motor DC servo motor three-phase current rotating magnetic field of teaching instrument Wound Three-phase alternator motor 160 rats of three-phase permanent magnet generator cage induction motor Synchro Motor medium-sized three-phase power transformer

直流复励电动机大型三相电力变压器三相异步深槽式电动机直流电动机直流电机单相异步鼠笼式电动机三相整流子电动机单相电动机电源分相器三相异步双槽鼠笼电机矿用防爆电动机三相异步鼠笼式电动机杯形转子交流伺服电动机三相异步电动机调速原理旋转磁场的产生与变速三相绕线式异步电动机 165mm三相步进电机三相同步电动机 JFB型硅整流发电机转子供电交流同步电机直流伺服电动机三相电流旋转磁场示教仪绕线式电动机三相交流发电机 160型永磁发电机三相鼠笼异步电动机自整角电机中型三相电力变压器

Similarly, if the strong shear, which could suppress all the scattering in the quiescent two phase region, stopped, the follow-up phase separation also displayed characteristics of anisotropism and relaxation, In this dissertation, the transposed"butterfly'and"streakpattern were observed for the first time within the shear-history-influenced phase separation, which is found closely relevant to the anisotropical relaxation behavior of macromolecules. 5. The phase separation kinetics of PS/PVME under oscillatory shear was further studied on the base of that done under simple shear. It is found that, under specific temperature and strain amplitude, the occurrence of phase separation is strongly contingent on oscillatory frequency and only intermediate frequency could effectively induce phase separation; If all considered oscillatory shear could stimulate phase separation, a fixed frequency can maintain specific most probable phase size and higher frequency yields smaller phase, which makes a higher elasticity but weaker stress relaxation; Furthermore, higher frequency can produces stronger compulsory oscillation on the MPPS but won't change the mean of the MPPS. Under given frequency and strain amplitude, the phase separation kinetics dramatically depends on the phase angle of oscillation and the phase separation corresponding to different phase angle follows different dynamical process.

在简单剪切场下相分离动力学研究的基础上进一步对振动剪切场下PS／PVME的相分离动力力学进行了尝试性的研究，发现：在一定温度和振幅条件下，相分离的发生强烈的依赖于振动频率，只有中等频率的振动剪切才能有效地促进相分离的发生；在都能使相分离发生的前提下，一定频率的剪切能够使体系维持一定的最可几相尺寸，较高频率的剪切导致体系形成的相区尺寸较小，因而体系的弹性效应较强而应力松弛效应较弱；同时，更高频率的剪切对最可几相尺寸的强迫振动效应越强，但不会使最可几相尺寸的平均值发生改变；在一定的振幅和频率条件下，相分离的动力学过程会强烈地依赖于相位角，不同相位角对应的相分离遵循不同的动力学过程但机理一样。

A frequency divider, comprises: an inverting unit comprising an input, and an output; and a plurality of switch inverters in series, having at least a first switch inverter and a last switch inverter; each switch inverter comprising two inphase switches, in which the first switch inverter is connected to the output of the inverting unit, and the last switch inverter is connected to the input of the inverting unit; wherein the two inphase switches of each of the switch inverters are respectively supplied by a first voltage and a second voltage, any two of the adjacent switch inverters are respectively controlled by two inverted clocks, thereby the two inphase switches are selectively turned on synchronously and turned off synchronously.

反相单元包含输入端以及输出端；串联的多个切换反相器，具有至少一第一切换反相器以及最终切换反相器，每一切换反相器包含两个同相开关，其中第一切换反相器连接于反相单元的输出端，且最终切换反相器连接于反相单元的输入端；每一切换反相器的同相开关分别由第一电压与第二电压供电，任何两个相邻的切换反相器分别受控于两个反相时钟，因此该两个同相开关是选择性同步开启及同步关闭的。

The call developmental process of Psittacula agapornis consists of five instinct phases according to its call character. In the first phase （congenital cal1 phase, CCP, 0~12 day of age）, the juveniles only produce single syllable with short syllable length. The second phase（blank-model-forming phase,BMFP, 13~30 day of age） is important for formation of vocal learning pathways. During this phase, the calls characterized by more and longer syllables. In the third phase （call-model-forming phase,CMFP, 31~45 day of age）, the call development is guided by a model system for vocal learning, vocal learning is engendered so that some calls with multi-syllables with UP1 are produced, principal frequency has increased about by 920 cent, the number of note is double that of second phase. The short-term memories are transformed into long-term memories in the forth phase （call-feedback-learning phase,CFLP, 46~90 day of age）. The call of juveniles is a close match to tutor call which accompanied by double various sounds with BS and UP1, and more resonance components were formed. Second principal frequency has increased about by 970 cent, the number of note increases by 2.6~3.0 times. During the fifth phase （excellent call phase,ECP, after 91 d）, vocal motor pathway is developed and the calls are accompanied with most stable, harmonious vari-tone and complex repertoire.

牡丹鹦鹉的鸣声发育分为5个时期。0~12 d为先天性鸣声期，鸣声特征为以基本音为主音的单音节单音调声，声长短。13~30 d为空白模板形成期，鸣声特征为以基本音为主音的多音节单音调声，声长和音量显著性增加，表明发声学习通路开始形成。31~45 d为鸣声模板形成期，鸣声特征为以第1陪音（UP1）为主音的多音节单变调声，声长和音量显著性增加，主音频提升约920音分，涵盖的律音数增加1倍，表明发声学习模板逐渐形成，发声学习开始。46~90 d为鸣声反馈学习期，鸣声特征为以BS和UP1为主音的双变调声，声长和音量显著性增加，主音频涵盖的律音数增加2.6~3.0倍，第2主音频提升约970音分，表明稳定模板逐渐形成，短期记忆逐渐向长期记忆转化。91 d后为完美鸣声期，鸣声特征为以UP1为主音的复合变音调声，声长、音量、主音频的提升和涵盖的律音数都趋于平稳，鸣声稳定而和谐，表明发声运动通路基本形成。

Furthermore, each developmental phase showed several different phases, these included inflorescence 0 phase, inflorescence Ⅰ phase, inflorescence Ⅱ phase; spikelet Ⅰ phase, spikelet Ⅱ phase, spikelet Ⅲ phase; palea primordium phase, lodicule primordium phase, stamen primordium phase and carpel primordium phase.

在这3个大的发育时期，又根据每一发育时期中的原基分生组织生长发育的程度及先后顺序分别又可分为：花序0期、花序1期、花序Ⅱ期；小穗期Ⅰ期、小穗Ⅱ期、小穗Ⅲ期；内稃原基分化期、浆片原基分化期、雄蕊原基分化期、心皮原基分化期。

The paper aim at the three-phase voltage source SPMW-inverter, which is applied in variable-speed wind turbines system, adopts the theory of nonlinear counterchange and nonlinear feedback, creates the three-phase voltage source PWM-inverter's nonlinear model, and deduces it's feedback linearization equation, consequently, the three-phase voltage source PWM-inverter active and reactive current decoupling control is proposed.

该文针对变速风力发电机组系统所用的三相电压型SPWM 逆变器，采用非线性变换和非线性反馈理论，建立了三相电压型 PWM 逆变器非线性数学模型，推导出其反馈线性化方程，从而得出三相电压型 PWM 逆变器有功电流和无功电流的解耦控制策略。

In this thesis, the design scheme of a DSP-controlled inverter applied in mobile generator is presented at the beginning and then the design method of control system is mainly discussed. Equivalent output impedance model of instantaneous voltage and current closed-loop controlled inverter is established on the foundation mentioned above. How the values of LC filter, parameters of PI regulator and feedback coefficient etc. affect the external characteristic of inverter is analyzed in detail. Non-linear factor of inverter are also discussed and corresponding solutions are put forward.

本文首先给出了移动发电机DSP控制逆变模块的设计方案，着重讨论了控制系统的设计方法，在此基础上建立了电压电流瞬时值双闭环控制的逆变模块等效输出阻抗模型，对滤波器LC值、PI调节器参数和反馈系数等各项因素对逆变模块输出外特性的影响进行了详细分析，并探讨了逆变模块中非线性因素对输出波形的影响，提出了相应的解决方案。

According to Bessel function and Fourier series theory, generation, magnitude and distribution of voltage harmonic generated by single-phase two-level SPWM inverter and three-phase SPWM inverter are analyzed and calculated particularity and concretely in allusion to inverter-motor system.

然后针对逆变器-电动机系统，利用贝塞尔函数和傅里叶级数理论，分别对单相二阶SPWM逆变器和三相SPWM逆变器的输出电压谐波的产生、大小和分布进行了细致而具体的分析和计算。

A.The inverter part is made of MOSFET single-phase inverter bridges connected in CFI. The power of single-phase bridge is 60kW; the inverter bridge adopts the building block method to realize power superposition. Every piece of bridge plate is designed in the shape of a drawer, which is very easy to install and repair

逆变部分由 MOSFET 单相逆变桥并联组成，单桥功率设计为 60kW ，逆变桥采用积木式方式完成功率叠加，每块桥板均设计为由滑道组成的抽屉式结构，方便安装与维修

Factory covers an area of 3300M2, building area of 2600M2, our factory has currently Products A02, B02, C02, D02, JW, JY, JZ, JX, YS-H, YUG, YL, YYS series of sub-horsepower motor professional production and export of various types of electric motors, mainly including: asynchronous motor, three-phase asynchronous motor, single-phase motors, split-phase start-up of single-phase motors, single-phase capacitor start motor, capacitance running single-phase motor , single-phase resistance starting asynchronous motors, single-phase capacitance running motor, marine exchanges, such as three-phase asynchronous motor, the products are sold throughout the country, and substantial exports to the United States, Germany and other European and American countries.

厂区占地 3300M2 ，建筑面积 2600M2 ，我厂目前产品有 A02、 B02、 C02、 D02、 JW 、 JY 、 JZ 、 JX 、 YS-H 、 YUG 、 YL 、 YYS 等系列的分马力电机专业生产和出口各类电动机，主要包括：异步电动机、三相异步电动机、单相电动机、分相起动单相电动机、单相电容起动电动机、电容运转单相电动机、单相电阻异步起动电动机、单相电容运转电动机、船用交流三相异步电动机等，产品销往全国各地，并大量出口到美国、德国等欧、美国家。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。