Analysis and implementation of a new zero current switching flyback inverter
Analysis and implementation of a new zero current switching flyback inverter
复制标题
一种新型零电流开关反激式逆变器的分析与实现
DOI：
10.1002/cta.2577
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发表时间：
2018
影响因子：
2.3
通讯作者：
M. Mohammadi
中科院分区：
文献类型：
--
作者：
Sajad A. Ansari;J. Moghani;M. Mohammadi
提出了一种新型断续导通模式零电流开关(ZCS)反激式逆变器。在所提出的反激式逆变器中，通过在传统的反激式逆变器上增加一个简单的辅助电路来实现主开关管的零电流控制。此外，辅助开关在ZCS状态下接通和断开。因此，开关的开关损耗可以忽略不计，这提高了效率，允许更高的开关频率和更紧凑的设计。谐振辅助单元仅在很短的过渡时间内被激活，这使得其导通损耗可以忽略不计。此外，在关断过程中，主开关管的电压过冲受到限制，这使得使用低电压金属氧化物半导体场效应晶体管(MOSFET)具有低导通损耗和低成本。详细介绍了带辅助电路的反激式逆变器的工作原理和设计考虑。仿真和实验结果验证了该逆变器的性能。
In this paper, a novel zero current switching (ZCS) flyback inverter in discontinuous conduction mode (DCM) is proposed. In the proposed flyback inverter, the ZCS for the primary switch is achieved by adding a simple auxiliary circuit to the conventional flyback inverter. Also, the auxiliary switch is turned on and turned off at ZCS condition. Therefore, the switching losses of the switches are negligible, which increases the efficiency and allows higher switching frequency and more compact design. The resonant auxiliary cell is activated only in short transition times that makes its conduction losses negligible. Furthermore, the voltage overshoot of the main switch is limited during the turn‐off process, which allows utilization of lower voltage metal‐oxide semiconductor field‐effect transistors (MOSFETs) with low conduction losses and low cost. The detailed operation of the flyback inverter with auxiliary circuit and design considerations are presented. Simulation and experimental results are presented to verify the performance of the proposed inverter.