交错并联磁集成开关电感高增益Boost变换器的研究

为了提高传统Boost变换器的电压增益和暂态响应速度,同时减小电感支路的电流纹波和变换器的体积重量,将磁集成技术、交错并联技术以及开关电感和储能电容应用到传统Boost变换器中,提出了交错并联磁集成开关电感高增益Boost变换器。其中通过引用开关电感和储能电容可以使所提变换器的电压增益提高到传统Boost变换器的2倍;采用磁集成技术并合理设计耦合电感系数,不仅可以减小该变换器电感支路的电流纹波,还提高了系统暂态响应速度,减小了变换器的体积重量,从而提高变换器的电气性能。应用PSIM仿真软件对该变换器进行仿真,并制作样机对理论分析进行了实验验证。

Research on Interleaved High-gain Boost Converter with Magnetic Integrated Switched Inductor

To improve the voltage gain and transient response speed of a traditional Boost converter while reducing the current ripple of inductor branch and the volume and weight of the converter, the magnetic integration technique, interleaved technology, switching inductance and energy storage capacitor are applied. In this way, an interleaved high-gain Boost converter with magnetic integrated switched inductor is put forward. Through the introduction of switching inductance and energy storage capacitor, the voltage gain of the proposed converter can be increased to twice as high as that of the traditional Boost converter. By using the magnetic integration technique and reasonably designing the coupling inductance coefficient, the novel converter can not only reduce the current ripple of inductor branch, but also improve the system''s transient response speed and reduce the volume and weight of the converter, thus improving the converter''s electrical performance. The PSIM simulation software was applied to simulate this converter, and a prototype was fabricated to experimentally verify the theoretical analysis.