通用脉冲宽度调节开关模型用于基于不连续导电模式中的多态切换单元的转换器
1Department of Electrical Engineering, Federal University of São João del-Rei, São João del-Rei 36307-352, Brazil.
Sensors (Basel, Switzerland)
|May 25, 2024
概括
本研究介绍了一种通用脉冲宽度调制 (PWM) 交换机模型,用于不连续传导模式 (DCM) 的多态交换单元 (MSSC). 新的基于电路的方法简化了无需矩阵操作的小信号转换器建模.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 控制系统 控制系统
背景情况:
- 小信号建模对于分析转换器动态至关重要.
- 现有的方法,如状态空间平均 (SSA) 可能是复杂的,特别是多状态切换单元 (MSSCs).
- 不连续导电模式 (DCM) 操作带来了独特的建模挑战.
研究的目的:
- 为在DCM中运行的MSSC引入一个通用的脉冲宽度调制 (PWM) 开关模型.
- 为SSA提供基于电路的替代方案,避免矩阵操纵.
- 开发适用于任意数量的切换状态和工作周期区域的模型.
主要方法:
- 在DCM中对MSSC进行现有的PWM开关模型的概括.
- 扩展了Vorperian对多相转换器的概念.
- 开发基于电路的直流和交流模型.
主要成果:
- 衍生出的直流和交流模型对任意数量的切换状态有效.
- 模型适用于由工作周期定义的所有运行区域.
- 可以准确地确定电压增益和不同的传输函数.
- 对各种MSSC配置的证明适用性.
结论:
- 一般化的PWM开关模型为DCM中MSSC小信号建模提供了一种简化和多功能方法.
- 这种基于电路的方法增强了没有复杂矩阵计算的分析.
- 这些模型为转换器的行为和性能提供了准确的见解.
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