| 引用本文: | 马星河,谭国俊,张晓,汪旭东,袁世鹰.一种新颖的矩阵变换器PWM脉冲产生方法[J].电力自动化设备,2007,27(8):55-57 |
| .PWM pulse generation for matrix converter[J].Electric Power Automation Equipment,2007,27(8):55-57 |
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| 摘要: |
| 在分析了矩阵变换器双电压合成原理的基础上,针对该控制原理需要产生不规则的PWM脉冲,提出了一种新颖的脉冲间接产生方法。传统的现场可编程大规模门阵列器件(FPGA)根据计算的占空比数据进行三角波调制,在FPGA内部比较产生需要的不规则PWM脉冲,而未使用微处理器本身集成的PWM脉冲发生器,软件编程复杂且整机系统可靠性不高。提出的脉冲间接产生方法利用微处理的PWM脉冲发生器产生6路标准PWM脉冲,将6路标准PWM脉冲按照不同逻辑运算合成得到矩阵变换器所需要的18路脉冲,该方法不仅降低了编程复杂性,而且与系统没有数据交换,提高了系统可靠性。设计了以dSPACE为主控单元的实验平台,通过实验方法验证了所提脉冲间接产生方法的有效性与正确性。 |
| 关键词: 矩阵变换器,双电压合成,PWM脉冲 |
| DOI： |
| 分类号:TM761.2 |
| 基金项目:国家自然基金资助项目(60474043)，中国矿业大学科技基金资助项目(E200427)~~ |
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| PWM pulse generation for matrix converter |
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MA Xing-he TAN Guo-jun ZHANG Xiao WANG Xu-dong YUAN Shi-ying
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| Abstract: |
| Based on the principle of the two line voltage synthesis control for matrix converter,the method to indirectly generate the required PWM pulses is presented.The traditional method uses FPGA(Field Programmable Gate Array)to generate internally the required irregular PWM pulses through the tri-angle waveform modulation according to the computed duty cycle.The software programming is complicated and the system reliability is low.The proposed method uses the PWM pulse generator of microprocessor to generate six series of standard PWM pulses and assembles them into the required 18 series of PWM pulses according to different logic operations,which decreases the complexity of programming and increases system reliability because there is no data exchange with system.The experimental platform based on dSPACE is designed and the experimental results demonstrate its effectiveness and correctness. |
| Key words: matrix converter,two line voltage synthesis,PWM pulse |
