| 异步电机PCPWM供电下动态性能的研究 |
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| 引用本文： | 施大顺,杜世俊,李红梅. 异步电机PCPWM供电下动态性能的研究[J]. 合肥工业大学学报(自然科学版), 2005, 28(1): 22-25 |
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| 作者姓名： | 施大顺 杜世俊 李红梅 |
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| 作者单位： | 合肥工业大学,电气与自动化工程学院,安徽,合肥,230009;合肥工业大学,电气与自动化工程学院,安徽,合肥,230009;合肥工业大学,电气与自动化工程学院,安徽,合肥,230009 |
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| 摘 要： | 异步电动机变频控制系统中,逆变器脉宽调制策略对系统动稳态性能起着重要作用。文章建立了在PCPWM(pulsewidthmodulationwithpartiallyconstantmodulatingwaves)模式逆变器供电下,异步电动机考虑主磁路饱和的变频调速系统非线性模型,仿真了系统的动稳态性能。仿真结果表明PCPWM调制法较SPWM模式,在提高馈电给逆变器的直流电压利用率同时,基本保持空载起动加速时间不变,但显著抑制了变频调速系统的转矩脉动。
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| 关 键 词： | PCPWM模式 转矩脉动 逆变器 仿真 |
| 文章编号： | 1003-5060(2005)01-0022-04 |
| 修稿时间： | 2004-05-13 |
Simulation study on dynamic performance of PCPWM inverter fed asynchronous motor |
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| SHI Da-shun,DU Shi-jun,LI Hong-mei. Simulation study on dynamic performance of PCPWM inverter fed asynchronous motor[J]. Journal of Hefei University of Technology(Natural Science), 2005, 28(1): 22-25 |
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| Authors: | SHI Da-shun DU Shi-jun LI Hong-mei |
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| Abstract: | The strategy of pulse width modulation(PWM) plays an important role in the asynchronous machine control system. The nonlinear model of asynchronous motor variable frequency variable speed system fed by pulse width modulation with partially constant modulating waves(PCPWM) is set up, allowing for the effect of main magnetic circuit saturation. Based on the model, the dynamic performance of the system is simulated. Results indicate that compared with the synchronous PWM(SPWM) pattern, the PCPWM pattern reduces the torque ripple of the motor, keeps almost the same response time and achieves the effective utilization of the DC supply voltage for the inverter. |
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| Keywords: | pattern of pulse width modulation with partially constant modulating waves(PCPWM) torque ripple inverter simulation |
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