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- Study on the the control effect of zero voltage vector in DTC and a modified strategy of DTC of PMSM. The simulation experiment results show that they could restrain torque ripple availably. 研究了零电压矢量在直接转矩控制中的作用和一种改进的永磁同步电机直接转矩控制策略,仿真结果表明将零电压矢量引入控制和改进的策略都能明显抑制系统转矩脉动。
- Zero voltage vector 零电压矢量
- The following bursts start at zero voltage for purely resistive loads. 下面的零电压式触发启动是对纯阻性负载的.
- In conventional SVM-DTC, two PI controllers are used to generate the two components of reference voltage vector. 传统SVM-DTC中使用两个PI控制器来产生参考电压矢量的两个分量。
- A connection between an electrical device and the earth (which is a zero voltage). 连结电装置和土地(零伏)的连结物。
- This paper introduces the block diagram of NPC three-level inverters and the principle of space voltage vector control. 介绍了二极管中点箝位型三电平逆变器主电路的结构和空间电压矢量控制的原理。
- In this paper,we present a frequency conversion electromotor system organized by voltage vector transducer and induction-motor. 本文研究了用电压矢量变频器和感应电动机构成的变频电动机系统。
- Thyristor firing and non-firing are synchronised with the supply and are performed at zero voltage for a resistive load. 对于阻性负载;于供电同步的触发电压和非触发电压是在零电压点执行的.
- According to the model of five-phase induction motor and basic principle of DTC,the reference voltage vector was deduced. 根据五相感应电机模型和DTC基本原理,推导出参考电压矢量。
- Transformation matrixes of voltage vector and its dwell time between two-level and arbitrary-level inverters are derived. 推导出任意电平和两电平之间的电压矢量及其作用时间变换矩阵。
- Under developing four different modes of operation of the push pull zero voltage switching multiresonant converter (PP ZVS MRC), a complete DC analysis is presented. 将零电压开关多谐振技术应用于推挽变换器电路,提出了一种推挽式零电压开关多谐振高频变换器(PPZVS-MRC)电路方案,较全面、完整地对其稳态工作模式和直流特性进行了分析,发现了变换器正常运行的4种工作模式。
- Our experimental results have proved the possibility of generating PS pulses by Josephson junction when baised near the zero voltage state, which was proposed by Peterson. 我们的实验结果论证了 Peterson 等人提出的约瑟夫逊结零电压附近结电压尖脉冲具有 PS 数量级和采用约瑟夫逊结产生 PS 尖脉冲的可能性。
- Soft switching full bridge converter has been proposed to meet these goals by establishing zero voltage switching condition across the power transistors. 为了此一目的,全桥软切换转换器因应而生,此种技巧可利用开关元件的零电压切换,来有效的降低切换损失。
- This scheme introduces zero voltage resonant technology of pulse width modulation and phasing resonant controller UC3875,and its application in power converter. 介绍了相移脉宽调制零电压谐振技术和相移脉宽调制谐振控制器UC3875的性能及其在功率变换中的应用。
- This method that more voltage vector chosen in per controlling period is integrated to target voltage vector according to torque, flux and speed increase number of voltage vector of system and apply more simple modulation method. 即根据转矩、磁链误差和速度的不同,在每个控制周期内选取多个电压矢量来合成目标电压矢量,增加电压矢量的数目,并采用更为简单的调制方法进行脉宽调制,从而大大降低转矩、电流和磁链的波动,使系统在低速时的转矩更平稳、性能更佳。
- Using spatial distribution between current error vector and the reference voltage vector,this method gives the best voltage vector to minish current error control in the reasonable scope. 该方法利用电流误差矢量与参考电压矢量之间的空间分布给出最佳的电压矢量输出,使电流误差控制在合理的范围之内。
- Digital medium power control and intelligent operation manage mend with its characters of frequency scanning start of zero Voltage, Strong anti-interference, quick melting energy saving and efficiency promotions etc. 数字化可控硅中频电源,智能化操作系统。其特点有:零压扫频启动,抗干扰能力强,熔炼速度快,节省能源,提高效率等。
- A phase shift converter can achieve zero voltage switching on the leading leg and zero current switching on the trailing leg by utilizing the reverse avalanche characteristics of IGBT. 利用IGBT的反向雪崩特性,实现伪相移变换器前臂零电压、尾臂零电流开关,使IGBT可在高开关频率下运行,且降低了开关损耗。
- Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation. 仿真和实验结果表明:所提出的变换器输入电流和输出电压为正弦,谐波小且输入功率因数可控,并可实现零电压换流。
- Generation of Voltage Vector PWM Wave by DSP 由DSP芯片生成电压空间矢量脉宽调制波