3 the effective value of a non sinusoidal periodic function is equal to the square root of the square sum of the constant component value and every harmonic component effective value 非正弦周期函数的有效值等于直流分量与各次谐波分量有效值的平方和的平方根。
Three - phase dry - type distribution transformers 50 hz , from 100 to 2500 kva with highest voltage for equipment not exceeding 36 kv - determination of the power rating of a transformer loaded with non - sinusoidal current 小于36kv设备的最高电压值为50hz 100 - 2500kva三相干式配电变压器.负载非正弦电流的变压器额定功率的测定
Three phase oil - immersed distribution transformers , 50 hz , from 50 to 2500 kva with highest voltage for equipment not exceeding 36 kv - determination of the power rating of a transformer loaded with non - sinusoidal currents 小于36kv设备的带有最高电压值50hz 50 - 2500kva三相油浸式配电变压器.载有非正弦电流的变压器额定功率测定
Three - phase oil - immersed distribution transformers 50 hz , from 50 to 2500 kva with highest voltage for equipment not exceeding 36 kv . part 4 : determination of the power rating of a transformer loaded with non - sinusoidal currents 最高电压不超过36 kv的设备用50 hz 50至2500 kva三相油浸配电变压器.第4部分:加载非正弦电流的变压器功率额定值的测定
The oscillation of continuous casting mold is an important factor that has effect on casting production . the oscillation of continuous casting mold has experienced four kinds : synchronisiru negative slide > . sinusoidal and non - sinusoidal oscillation 连铸结晶器的振动是影响连铸生产的重要因素，它主要分为四种方式：同步式振动、负滑动式振动，正弦振动和非正弦振动。
This paper introduces ieee trial - use standard 1459 - 2000 and compares the old and new definitions of the apparent power s . it also gives the definitions of electric power quantities under sinusoidal , nonsinusoidal , balanced , or unbalanced condition in detail 本文介绍和分析了ieeestd1459 ? 2000暂行使用标准，比较了关于视在功率s的新旧定义的不同。介绍正弦、非正弦单相系统的电量的定义，详细分析了正弦、非正弦和对称、不对称的三相系统的功率的定义和计算。
Non - sinusoidal oscillation has the characters that the upward time of the continuous casting mold is longer than the downward time . it can reduce the friction between the mold wall and the strand surface , and prevents the strand from leaking and cracking , it can also improve the surface quality of slabs . it is the main development of continuous casting mold in the future 其中非正弦振动具有上升运动时间比下降运动时间长的特点，能减小结晶器与坯壳之间的摩擦力，防止坯壳的拉漏和拉裂，改善钢坯的表面质量，是今后连铸结晶器振动发展的主要方向。
For the bldcm which has a neither sinusoidal nor trapezoidal back - emf , that is , for a general shape back - emf bldcm , this dissertation proposes a novel id = 0 vector control method . by this method , the iq for a constant torque to produce is calculated through coordinate transformation , and the reference iq is tracked by vector control in the dq0 frame 对于实际反电动势波形既非正弦又非梯形波的无刷直流电动机，提出一种新型的任意波形反电动势无刷直流电动机的i _ d = 0矢量控制方法，通过坐标变换浙江大学博士学位佑文摘要求解产生恒定电磁转矩所需的q轴电流，并在dqo坐标系下通过矢量控制对q轴参考电流进行跟踪。
With the development of modern industry , the nonlinear loads of power system are greatly increased . they absorb the non - sine current waves from power network and result in voltage aberrance . voltage aberrance makes the power quality severely deteriorate , endangers the safe and economical running of power system and affects some users ’ s normal work 随着现代工业的发展,电力系统中的非线性负荷大量增加,这些非线性负荷从电网吸收非正弦电流,导致电网电压发生畸变,使电能质量严重恶化,危及电力系统安全和经济运行,影响了用户的正常工作。
Abstract : bridge function and generalized bridge function are all three - valued function , and are made by initial sequence according as copied or shifted ways . they include some familiar orthogonal function of non - sine , such as walsh function . this paper briefly introduced some research advance on this subject , emphasized to introduce the copy theory and generalized copy method . the process of making ( generalized ) bridge function , its property and application , were introduced briefly 文摘:桥函数和广义桥函数均为三值函数系，都是将初始序列经复制方式和移位方式变换后而形成的.它们包括了一些常见的非正弦正交函数，如沃尔什函数和方波函数等.简要介绍了近10年来北京航空航天大学通信与电子系统博士点在非正弦正交函数方面研究的一些新进展，重点介绍了复制理论和广义复制方法，桥函数、广义桥函数的复制生成方法、性质及其应用等专题
