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Description: 我们设计的异步电机变频调速器以TMS320F28035芯片为控制核心，通过输出三相PWM波控制智能功率模块IPM驱动三相异步电机。我们使用空间矢量SVPWM算法，并对其进行了优化。采用异步电机无传感器测速算法省去了昂贵的光电编码器，大大节省了成本。同时开创性的研发了自动根据运行环境调节的自适应变频算法，使我们的变频调速器可以在电网条件恶劣的乡村山区工作，由此该变频器已被一家民用水泵生产企业预订。(We design the asynchronous motor frequency conversion governor with TMS320F28035 chip as the control core, and output three-phase PWM wave to control the intelligent power module IPM to drive the three-phase asynchronous motor. We use space vector SVPWM algorithm and optimize it. The sensorless speed measurement algorithm of asynchronous motor eliminates the expensive photoelectric encoder and greatly saves the cost. At the same time, pioneering research automatic conversion algorithm based on adaptive adjustment of the operating environment, we can make VVVF in power grid conditions of rural area, thus the inverter has been a civil pump manufacturer reservation.)
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Size: 5339136 |
Author: 飞虎518
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Description: SVPWM的主要思想是以三相对称正弦波电压供电时三相对称电动机定子理想磁链圆为参考标准，以三相逆变器不同开关模式作适当的切换，从而形成PWM波，以所形成的实际磁链矢量来追踪其准确磁链圆。传统的SPWM方法从电源的角度出发，以生成一个可调频调压的正弦波电源，而SVPWM方法将逆变系统和异步电机看作一个整体来考虑，模型比较简单，也便于微处理器的实时控制(The main idea of SVPWM is to take the ideal stator flux circle of three-phase symmetrical motor stator as the reference standard when the three-phase symmetrical sine wave voltage is supplied. The three-phase inverter with different switching modes is properly switched to form the PWM wave. The actual flux vector to track its exact circle of flux. The traditional SPWM method from the power point of view to generate a sine wave power frequency regulator, and SVPWM method inverter system and asynchronous motor as a whole to consider, the model is relatively simple, but also facilitate the real-time microprocessor control)
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Size: 815104 |
Author: 胡路才
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Description: 基于lc滤波器的pwm逆变器虚拟同步机控制(Inverter synchronizer control)
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Size: 14336 |
Author: max-dl
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Description: 实现双极性PWM方式下的单相全桥逆变电路的仿真。(The simulation of the single phase full bridge inverter circuit under the bipolar PWM mode is realized.)
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Size: 10240 |
Author: 酒醉心烟伤肺情伤人 |
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Description: 三相PWM整流器逆变器 实现单位功率因数的逆变(three phase inverter)
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Size: 12288 |
Author: 家正不歪 |
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Description: EXAMPLE CASE:
VSC Transmission with AC transmission characteristics based on a simple 6-pulse STATCOM example provides up to 75 MW power to the ac receiving end system, DC voltage - 110kV
- Rectifier
Controls power as a function of phase angle difference between sending end and receiving end AC voltages, Controls reactive power at the sending end bus.
Note: Sending end AC voltage controlled by exciter of the generator. PWM with carrier frequency up to 33 times fundamental.
- Inverter
Controls AC voltage - magnitude and also DC voltage. Uses PWM with carrier frequency up to 33 times fundamental.
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Size: 602112 |
Author: 小马000 |
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Description: 三相桥式PWM型逆变电路simulink仿真，改变调制参数研究电路波形(Three-phase bridge PWM type inverter circuit simulink simulation, change the modulation parameters to study the circuit waveform)
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Size: 7168 |
Author: 你是？ |
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Description: 所谓SPWM，就是在PWM的基础上改变了调制脉冲方式，脉冲宽度时间占空比按正弦规律排列，这样输出波形经过适当的滤波可以做到正弦波输出。它广泛地用于直流交流逆变器.(So-called SPWM, is changed on the basis of the PWM pulse modulation, pulse width time arrange duty ratio according to the sine law, so that the output sine wave output waveform through the appropriate filter can do.It is widely used in dc ac inverter.)
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Size: 25600 |
Author: QIAOF |
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Description: 单片机实现用脉冲宽度按正弦规律变化而和正弦波等效的PWM波形即SPWM波形控制逆变电路中开关器件的通断，使其输出的脉冲电压的面积与所希望输出的正弦波在相应区间内的面积相等，通过改变调制波的频率和幅值则可调节逆变电路输出电压的频率和幅值，进而控制逆变输出电压。(The singlechip realizes the switching of the switch device in the inverter circuit, which is controlled by the pulse width according to the sine law and the PWM waveform equivalent to the sinusoidal wave, that is, the SPWM waveform. The area of the output pulse voltage is equal to the desired output sine wave in the corresponding interval, and the frequency and amplitude of the variable modulation wave can be adjusted to the inverse. The frequency and amplitude of the output voltage of the circuit are changed to control the output voltage of the inverter.)
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Size: 14336 |
Author: xiegao12 |
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Description: matlab/simulink中搭建的pwm三相全桥逆变电路(PWM three phase full bridge inverter circuit built in matlab/simulink)
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Size: 11264 |
Author: 123eer |
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Description: 逆变焊机的数字化控制系统，包括PI电流控制，还有PWM输出(Digital control system of inverter welder)
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Size: 2220032 |
Author: dsafdf |
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Description: 基于PWM控制的三相逆变器，采用PI调节，输出电流电压波形稳定。(The three-phase inverter based on PWM is controlled by PI, and the output current and voltage waveform is stable.)
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Size: 12288 |
Author: lalalatitit |
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