高功率交叉直流-直流转换器的效率提升通过使用改进的相流失控制与相等电阻的相流失控制
Guttula Yedukondalu1, Susovon Samanta1
1National Institute of Technology, Rourkela, 769008, Odisha, India.
ISA transactions
|April 4, 2024
概括
本研究介绍了交叉式增强转换器 (IBC) 的增强相散流控制算法,以提高轻到中等负载的效率. 新方法使用在线相等电阻估计,在所有负载条件下提供更好的性能.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
背景情况:
- 由于主要的开关损失,DC-DC转换器在轻到中等负载下表现出效率下降.
- 与传统的增压转换器 (CBC) 相比,交叉增压转换器 (IBC) 在增加相位时显示出更大的效率下降.
研究的目的:
- 在轻到中等负载条件下,提高三相交叉增压转换器 (3-φ IBC) 的效率.
- 开发一个自动相位选择机制,以提高所有负载范围的效率.
主要方法:
- 提出了一种改进的分相控制算法,利用相等电阻估计.
- 实现了相等电阻的在线测量,用于精确的相散射.
- 集成自动更换内环平均电流模式控制 (ACIL-ACMC) 用于电流共享和电压调节.
主要成果:
- 改进的算法成功地提高了交叉式增压转换器的效率,特别是在较轻的负载下.
- 在线阻力估计能够实现更准确的相流失和更好的整体性能.
- 在负载变化和相位转换期间,ACIL-ACMC确保了稳定的运行和均等的电流分布.
结论:
- 开发的分相控制算法有效地解决了IBC在减少负载时的效率限制.
- 在线参数估计和先进的控制策略的整合带来了显著的效率提升.
- 在DSP (TMS320F28335) 上实施的7.5kW 3-φ IBC 具有拟议的控制,证明了提高效率和稳定的运行.
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