| 引用本文: | 廖磊,侯世英,陈剑飞,饶娆,孙韬.混合五电平逆变器的单载波双调制波调制策略[J].电力自动化设备,2018,(12): |
| LIAO Lei,HOU Shiying,CHEN Jianfei,RAO Rao,SUN Tao.Single-carrier and dual-modulation waves PWM strategy for hybrid five-level inverter[J].Electric Power Automation Equipment,2018,(12): |
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| 摘要: |
| 以电容箝位型混合五电平逆变器为研究对象，在分析其工作原理及电容电压平衡控制的基础上，提出了一种适用于该混合五电平逆变器的单载波双调制波脉冲宽度调制(PWM)策略。通过控制一个载波周期内电容的充放电量相等来保持其电压平衡，同时只需数字信号处理器(DSP)上的一个ePWM模块即可实现该混合五电平逆变器的控制，降低了控制难度，最大限度地节约了DSP片上资源。实验结果验证了所提调制策略的正确性和可行性。 |
| 关键词: 混合五电平逆变器 电容电压平衡 单载波双调制波 脉冲宽度调制 电压控制 数字信号处理器 |
| DOI：10.16081/j.issn.1006-6047.2018.12.029 |
| 分类号:TM464 |
| 基金项目: |
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| Single-carrier and dual-modulation waves PWM strategy for hybrid five-level inverter |
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LIAO Lei, HOU Shiying, CHEN Jianfei, RAO Rao, SUN Tao
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State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
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| Abstract: |
| Based on analyzing the working principle of the capacitor-clamped hybrid five-level inverter and the voltage balance control of capacitor, a single-carrier and dual-modulation waves PWM(Pulse Width Modulation) strategy applied to the capacitor-clamped hybrid five-level inverter is introduced. By controlling the charging capacity equal to the discharging capacity in one carrier period, the voltage balance of capacitor is kept, and the control of the hybrid five-level inverter is achieved with only one ePWM module of DSP(Digital Signal Processor),which reduces the control difficulty and minimizes the DSP consumption. Experimental results verify the correctness and feasibility of the proposed strategy. |
| Key words: hybrid five-level inverter capacitor voltage balance single-carrier and dual-modulation waves pulse width modulation voltage control digital signal processors |
