field orientation meaning in English
感受野定向
Examples
- In this scheme , the torque of motor is calculated and controlled in the staler reference frame . by using stator field orientation , the optimum switching mode is achieved to control the inverter
它直接在定子坐标系下计算和控制交流电动机的转矩，采用定子磁场定向控制，直接对逆变器的开关状态进行最佳控制。 - Secondly , to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing . the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator . thirdly , it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow . the author constructed reliable and integrated experimental system and did a series of experimental study including no - load , cutting - in network and power generation at , below and above the synchronous speed
论文首先分析了风机运行特性及其最佳风能利用原理，通过仿真及实验验证了采用直流电机的输出特性模拟风力机的最大输出功率曲线的可行性，并给出了模拟系统的硬件结构；然后为了实现交流励磁发电机有功、无功功率独立调节机理，分析了交流励磁双馈发电机的数学模型和在追踪最大风能捕获变速恒频风力发电时必需的定子磁链定向矢量控制策略；针对双馈发电机转子能量双向流动的要求，提出并设计了具有能量双向流动能力的双pwm交流励磁用变频器；最后为实现从理论到实践的全面研究，研制出了一套小功率完整的双pwm变频器交流励磁的双馈风力发电机实验系统，进行了空载、并网、同步速及上、下的发电运行等一系列的运行实验；所完成的仿真和实验研究均验证了理论、模型和控制策略的正确性、可行性。 - The general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges
简述20年来中国无损检测中磁偶板子理论研究的概况和进展，主要介绍磁偶极子，有限长磁偶极线和极带，磁粉颗粒的受力，磁化场方向对磁粉显现缺陷的影响，棒料、管材和方钢的纵向磁化，工件表面沟槽深度对其引起漏磁场的影响，周向磁化时工件底棱上的杂乱显示成因，圆盘边缘柱面上沟槽内外漏磁场的解析表达式和针状磁介质对两个点磁荷间磁力的影响等。 - For an ev drive system , the variation of rotor time constant will bring on variation of torque and exorbitant line voltage even the field orientation may be destroyed . the varied torque will affect ev dynamic performance , and the higher voltage will limit the output power due to the bound of batteries in ev
对于电动汽车驱动系统来说，转子时间常数的波动会导致输出转矩和电机电压的波动，并且严重时会导致系统出现振荡，转矩的波动会影响汽车的动态性能，电机电压的波动则会由于电池电压的限制而影响电机的输出功率，这些都是电动汽车的驱动系统应该避免的问题。 - Abstract : the general situation and progress of magnetic dipole theoryresearch during recent twenty years in china were introduced briefly including magnetic dipole ; linear and strip magnetic dipoles of finite lengths ; magnetic force on a magnetic particle ; the effect of magnetizing field orientation on the revelation of defect by magnetic particles ; longitudinal magnetization of rod , tube and cuboid steel ; the relationship between the slot depth in a workpiece and magnetic leakage field ; the cause of stray magnetic pattern along base apex edges of a workpiece magnetized circumferentially ; the analytic expression for the magnetic leakage fields inside and outside the slot on the cylindrical surface of a disc ; and the effect of a needle - like magnetic medium on the magnetic force between two point magnetic charges
文摘:简述20年来中国无损检测中磁偶板子理论研究的概况和进展，主要介绍磁偶极子，有限长磁偶极线和极带，磁粉颗粒的受力，磁化场方向对磁粉显现缺陷的影响，棒料、管材和方钢的纵向磁化，工件表面沟槽深度对其引起漏磁场的影响，周向磁化时工件底棱上的杂乱显示成因，圆盘边缘柱面上沟槽内外漏磁场的解析表达式和针状磁介质对两个点磁荷间磁力的影响等。