| 基于FPGA的三相变频电源系统设计 |
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| 引用本文： | 周欣,李乐,刘瑞安,王为. 基于FPGA的三相变频电源系统设计[J]. 天津师范大学学报(自然科学版), 2012, 32(1): 43-47,69 |
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| 作者姓名： | 周欣 李乐 刘瑞安 王为 |
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| 作者单位： | 1. 天津师范大学物理与电子信息学院,天津,300387
2. 天津职业技术师范大学工程实训中心,天津,300222 |
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| 基金项目： | 天津师范大学博士基金资助项目 |
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| 摘 要： | 基于现场可编程门阵列（FieldProgrammableGateArray，FPGA）设计了一种单相输入三相输出的数字式控制变频电源．将单相市电输入该系统后，经过整流、升压、滤波、三相桥式逆变和低通滤波输出三相近似正弦交流电．根据三相异步电动机的调速特性，系统由控制器改变内部调制波的幅值和频率，进而调节三相正弦脉冲宽度调制（SinusoidalPulsewidthModulaton，SPWM）波的脉宽和频率，最终实现三相交流异步电动机的变压变频调速（VariableVoltageVariableFreguency，VVVF）控制．系统调制结果证明该电源的设计是可行的，且系统操作方便快捷、界面友好，可为实现全数字智能控制提供参考．
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| 关 键 词： | 变频电源 FPGA SPWM |
Design of three-phase variable-frequency power source based on FPGA |
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| ZHOU Xin , LI Le , LIU Rui-an , WANG Wei. Design of three-phase variable-frequency power source based on FPGA[J]. Journal of Tianjin Normal University(Natural Science Edition), 2012, 32(1): 43-47,69 |
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| Authors: | ZHOU Xin LI Le LIU Rui-an WANG Wei |
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| Affiliation: | 1.College of Physics and Electronic Information Science,Tianjin Normal University,Tianjin 300387,China; 2.Engineering Training Center,Tianjin University of Technology and Education,Tianjin 300222,China |
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| Abstract: | A kind of digital variable-frequency power source with single-phase input and three-phase output is designed based on field programmable gate array(FPGA).The input of single-phase city electric current is outputted into three-phase approximate sine alternating current through rectifier,booster,filter,single-phase bridge-inverter and low-pass filter.According to the governing characteristics of three-phase asynchronous motor,the controller changes the amplitude and frequency of the modulation wave and then regulates the pulse width and frequency of three-phase sinusoidal pulse width modulation(SPWM) wave,and finally the variable voltage variable frequency(VVVF) control of three-phase AC asynchronous motor is realized.The experiment shows that the power design is feasible,and the system is easy to operate with friendly interface and lays a foundation for full-digital intelligent control. |
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| Keywords: | variable-frequency power source FPGA SPWM |
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