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- PWM wave is generated by splitting Zero vector quasi circular locus method. 该系统用零矢量分割的准圆轨迹法生成PWM波形。
- This paper also investigated the influence of the zero vector and PWM switching frequency on the acoustic noise radiated by induction machine. 选择适当的PWM开关频率能有效地降低电机的噪声·
- The test result indicates correctness and good static and dynamic property of voltage space vector modulation. 实验结果表明电压空间矢量调制的正确性,该系统具有良好的动静态性能。
- A new direct torque control (DTC) strategy of induction motors based on fuzzy space vector modulation (SVM) technology was proposed. 提出了一种基于模糊空间矢量调制(SVM)技术的异步电机直接转矩控制(DTC)方案。
- The simulated study on a matrix converter (MC) is carried out based on space vector modulation (SVM) under balanced and unbalanced input voltages. 摘要针对平衡与非平衡输入电压对空间矢量调制的矩阵变换器进行了仿真分析。
- The control signals of invertor are produced by space vector modulation to achieve a small torque ripple and constant switch frequency. 以空间矢量调制方法来获得逆变器的开关信号,实现了小的转矩脉动和恒定的开关频率。
- Is i + 1 zero or nonzero? “对,是等于零”,结果:
- The concept of reference input voltage is proposed and used in the space vector modulation strategy of TSMC, which can implement the control of reactive power of TSMC. 文中提出了参考输入电压概念,在双级矩阵变换器空间矢量调制策略中利用参考输入电压来实现无功功率的调节,并给出了详细的调制方法,分析了输入功率因数和双级矩阵变换器电压传输比的关系。
- The results also show that the centre of the heavy snow lay in the positive area to the western severe gradient of MPV 1 zero line and also in the negative area to the northern severe gradient of MPV 2 zero line. 大降雪中心位于MPV1 零线西侧强梯度带的正值区内 ,它也位于 MPV2 零线北侧强梯度带的负值区内。 冬季在对流稳定层结下 ,当 MPV2 值为负时 ,垂直涡度才能得到较大的增长 ,导致上升运动 ,产生大降雪天气
- The permanent magnet linear synchronous motor (PMLSM) direct thrust control (DTC) system using space vector modulation (SVM) and sliding mode variable structure is analyzed in this paper. 对永磁直线同步电机(PMLSM)基于空间矢量调制和滑模变结构直接推力控制系统进行仿真和实验分析。
- T. G. Habetler, F. Profumo, M. Pastorelli, L. M. Tolbert, "Direct Torque Control of Induction Machines Using Space Vector Modulation," IEEE Trans. on Ind. Appl., vol. 28, no. 5, 1045-1053 (1992). 刘昌焕,交流电机控制-向量控制与直接转矩控制原理-,台北:东华出版公司,第41-42页(2003)。
- Taking the measurement of Earth's Rotary Rate(ERR) using Fibre-Optics Gyro(FOG) as an instance,the VMM(Vector Modulation Method) principle is introduced,and the mechanism of VMM is studied. 以使用光纤陀螺进行地速测量为例,介绍矢量调制法原理,研究矢量调制法测量机理。
- An improved method based on Space Vector Modulation (SVM) was presented to deal with the problem of high torque ripple that traditional DTC system generally encountered, especially in the low speed. 针对传统直接转矩控制在低速阶段出现的转矩脉动大等问题,提出了一种基于空间矢量调制的改进措施,取得了良好的动、静态性能。
- Peak value of common-mode voltage is reduced by 33.3% and RMS value is reduced by more than 50% by subdividing 6 input sections, choosing zero vectors accurately and adjusting switch sequences. 通过细分输入6区间,合理选择零矢量和适当调整开关顺序,使电流控制型矩阵变换器共模电压的峰值下降了33.;3%25,有效值降低了50%25以上,高频频谱也得到了抑制。
- three-dimensional space vector modulation 三维空间矢量调制
- three-level space vector modulation 三电平空间矢量调制
- interleaved space vector modulation (ISV M) 错时矢量调制技术
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- interleaved space vector modulation (ISVM) 错时矢量调制技术
- AIM: To construct the superantigen SEA (D227A) expression vector modulated by cis acting element of AFP and express it specifically on AFP + hepatocellular carcinoma (HCC) cells. 目的 :构建受AFP顺式作用元件调控的超抗原表达载体 ,将SEA(D2 2 7A)特异性的表达于AFP阳性肝癌细胞膜表面。