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- 由于输出的是方波,比较难听:-) 只能说是非常难听:-)为什么呢?只因为输出的是方波,包含了大量的奇次谐波。 你可以用双龙的"虚拟仪器"分别产生正弦波、三角波和方波听一下,正弦波感 觉就比较纯正,而方波则要多难听有多难听!-As the output is a square wave, more bluntly :-) can only say that it is very nasty :-) Why? Simply because the output is square wa
harmonicwave
- 用一片ARM芯片,对电网中的谐波信号进行采集,然后通过GPRS发送给上位机,上位机对采集到的电网中的谐波信号进行分析。以确定电网中谐波的情况。-With an ARM chip, the harmonics of the grid signal acquisition, and then sent to the GPRS PC, PC to the power grid of the collection of harmonic signal analysis. To determine the
harmon
- effect of harmonics on switched reflectance motor
Harmonics_Causes_and_Effects
- Power Quality Application Guide
DSP-based-induction-motor-speed-sensorless-vector-
- 矢童控制是一种高性能的交流电机控制方法,具有控制转矩小,电流谐波成分少等优 点。介绍了异步电动机无速度传感器矢量控制的原理及TMS320LF2407的特.饭和性能。同时给出了基于TMS320LF2407的异步电动机无速度传感器矢量控制系统的设计方案和软硬件的设计方法。-Children is a high performance vector control of AC motor control, with control of torque is small, and fewer cur
434MHzLoopAntenna(AN3401)
- This application note shows the typical impedance values for small loops and suggests matching networks for these impedances. It demonstrates the effectiveness of these networks in suppressing harmonics of the transmitted frequency. Most transmitt
Sensorless_Control_Strategies_for_PWM
- Methods for limitation and elimination of disturbances and harmonic pollution in the power system have been widely investigated. This problem rapidly intensifies with the increasing amount of electronic equipment (computers, radio set, printers, TV
Powersysteharmonics
- [电力系统谐波-基本原理、分析方法和滤波器设计].(奥地利)瓦基勒.扫描版-[Power system harmonics- fundamental principles, analytical methods and filter design]. (Austria) Wakil. Scan Edition
DGJZ200502034
- 详细地讨论了空间矢量脉宽调制的基本理论, 介绍了利用的电机控制芯片实现的方法, 给出了实验结果波形。该控制方法速度快、精度高, 在电压型逆变器中能产生更少的谐波并减少开关损耗。-Discussed in detail the space vector pulse width modulation of the basic theory, introduced the use of the motor control chip method, experimental results are gi
TXJS200807094
- 在交流电机变频调速中,脉宽调制技术已经得到了广泛的应用。而空间矢量脉宽调制方法与经典的脉宽调制方法相比,具有直流电压利用率高、控制简单、损耗较小、便于数字化方案实现等优点。文中介绍了利用TI 公司的DSP 电机控制芯片TMS320F2812 实现SVPWM 的方法。该控制方法速度快、精度高,在电压型逆变器中能产生更少的谐波并减少开关损耗。-AC motor speed regulation, pulse-width modulation technology has been widely us
5332106643554
- 随着电力电子技术的发展,变频调速异步电机越来越广泛地应用在各种工业领域。而变频调速系统的使用也给电力电子与电气传动学科带来了新的活力和研究课题,本文从变频调速异步电机的设计出发,首先将传统异步电机的设计方法与变频调速异步电机的设计方法进行了比较。指出了传统异步电机设计方法在变频调速异步电机设计中存在的局限性。同时,本文详细而系统地分析了变频调速异步电机中时间谐波和空间谐波的产生机理,论述了时间谐波和空间谐波对异步电机运行性能的影响,以及对异步电机绝缘系统的损害。-Following with t
Control-Algorithms-of-Active-Power-Filters
- The paper deals with the control methods of the active power ¯ lter with voltage source which can be used for reduction of high harmonics in the supply current. For the correct function of the ¯ lter, it is necessary to determine magnitud
third-harmonics-pic-code
- pic c code for detecting the third harmonics in ac mains compiled in the hitech compiler
diannengjianche
- 这是一款基于PIC单片机控制器的电能检测仪,通过FFT算法,计算出点电能的各个参数,以及谐波。-This is a PIC microcontroller-based controller of the power detector, through the FFT algorithm to calculate the point of the various parameters of electrical energy, and harmonics.
Signal-generator
- 用C++写的信号发生器,频谱可调,可调频谱发生器,输入基波,调整好各次谐波即可,可用示波器验证正确性-Written in C++, signal generators, spectrum adjustable, adjustable spectrum generator, the input fundamental, harmonics can be adjusted, can verify the correctness of the oscilloscope
2
- 在传统矩阵变换器和多电平逆变器的基础上,提出一种新颖的多电平矩阵变换器,介绍了其拓扑结构和工 作原理.多电平矩阵变换器的能量传递,是通过三相输入电压对中点电容充电到一个恒定直流电压而实现的.选择适 当的控制算法和电容电压,能在变换器的两侧合成低次谐波含量小且波形近似于正弦的可控输入/输出电压.对多电 平矩阵变换器进行建模和仿真,并探讨了其输出能控性. - On the basis of a conventional matrix converter and a multileve
ADE7880
- ADE7880 can be calculated to 63 harmonics. Measurement accuracy of 0.2 -Allow phonetic typingType text or a website address or translate a document. Cancel ADE7880, kěyǐ jìsuàn 63 cì xié bō. Jìliàng jīngdù 0.2 EnglishChinese (Simplified)SpanishAl
EXERCICIO5A
- 在这个仿真中,我们可以看到简化的谐波滤波器的性能,可以补偿由整流二极管生成的谐波。-IN THESE SIMULATION WE CAN SEE THE PERFORMANCE OF THE SIMPLIFIED HARMONIC FILTER, THAT CAN COMPENSATE SOME HARMONICS GENERATED BY DIODE RECTIFIER BRIDGE.
AD9851
- 模块能够输出正弦波和方波,2个正弦波和2个方波输出。AD9851:0-70MHz,频率在20-30MHz后谐波越来越大,波形会越来越不干净。方波:0-1MHz,采用70MHz的低通滤波器,使波形的SN比更好,并口和串口数据输入可以通过一个跳帽选择。产生DA基准的管脚(PIN12)引出,方便做输出波形的幅度调节应用。比较器的基准输入端电压由可变电阻产生,调节该电阻可以得到不同的占空比方波 -Modules can output sine and square wave, two sine an
svc123
- 动态无功补偿装置,仅仅是补偿无功功率,它的响应很快,就是补偿速度很快。 有源滤波器,主要是用来滤除电网中的谐波,但是它有补偿无功功率的能力,而且补偿的响应速度更快。目前的产品中,有源滤波器的功率容量相对较小,而且价格较高,所以鲜有专门用来做无功补偿动态无功补偿装置,仅仅是补偿无功功率,它的响应很快,就是补偿速度很快。 有源滤波器,主要是用来滤除电网中的谐波,但是它有补偿无功功率的能力,而且补偿的响应速度更快。目前的产品中,有源滤波器的功率容量相对较小,而且价格较高,所以鲜有专门用来做