| 电流跟踪型矩形波PWM逆变器的优化开关策略 |
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| 引用本文： | 许镇琳,江伟.电流跟踪型矩形波PWM逆变器的优化开关策略[J].天津大学学报(自然科学与工程技术版),1995,28(6):735-740. |
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| 作者姓名： | 许镇琳 江伟 |
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| 摘 要： | 电流ＰＷＭ控制是无刷直流机交流伺服系统的关键，常用电流跟踪型ＰＷＭ方式。本文提出恒频采样电流跟踪型ＰＷＭ方式，并对其开关策略进行了理论分析，前者为非线性的，环宽的准确控制较困难，后者线性的，采样频率的则较容易。在实验系统上验证了理论分析的正确性，效果令人满意。
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| 关 键 词： | 开关策略 PWM 无刷直流电机 逆变器 伺服系统 |
OPTIMAL SWITCH STRATEGY OF A CURRENT CONTROL PWM INVERTER WITH SQUARE WAVEFORM |
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| Xu Zhenlin, Jiang Wei, Wang Xiuzhi, Wu Zhong.OPTIMAL SWITCH STRATEGY OF A CURRENT CONTROL PWM INVERTER WITH SQUARE WAVEFORM[J].Journal of Tianjin University(Science and Technology),1995,28(6):735-740. |
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| Authors: | Xu Zhenlin Jiang Wei Wang Xiuzhi Wu Zhong |
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| Institution: | Dept. of Electrical Eng. and Automation |
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| Abstract: | urrent PWM control is a key problem in a BLDCM AC servo system, and the current hysterisis PWM method is widely adopted. The fixed frequency sample PWM method is put forward in this paper together with the theoretical analysis about their switch strategy. The first method has a nonlinear model. It is difficult to control switch frequency by changing hysterisis band. The latter has a linear model. It is easy to control switch frequency by changing sample frequency. The theoretical analysis has been proved through experiments, and the result is satisfactory. |
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| Keywords: | switch strategy fixed frequency sample current PWM control |
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