非隔离的高增益直流-直流转换器,具有无波纹的源电流
1School of Electrical Engineering (SELECT), Vellore Institute of Technology, Chennai, 600127, India.
Scientific reports
|January 10, 2024
概括
这项研究介绍了一种新的交联直流-直流转换器,使用合的电感器来获得高电压增益. 该设计尽量减少开关电压应力和输入电流波动,通过模拟和实验验证.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 可再生能源系统可再生能源系统
背景情况:
- 传统的直流-直流转换器在有效地实现高压增益方面存在局限性.
- 交联式增压转换器 (IBC) 提供了更好的性能,但对于非常高增益的应用需要进一步的增强.
研究的目的:
- 提出和验证一种具有增强高压增益能力的新型交联直流-直流转换器.
- 为了提高效率和降低高压增益应用中组件的压力.
主要方法:
- 从基于合感应器 (CI) 的交联增压转换器 (IBC) 合成转换器.
- 结合电压提升电容和二极管电容乘数器 (DCM) 电池用于增益扩展.
- 通过模拟和实验测试185W原型的设计验证.
主要成果:
- 在50kHz的开关频率下将18V转换为380V,实现了高电压增益.
- 开关经历了低电压压力 (10.5%的输出电压) 和由于交联而下降了一半的额定电流.
- 显著减少了输入电流波动 (11%) 和减少了二极管电压应力.
结论:
- 拟议的混合增益扩展概念有效地提高了电压增益能力.
- 转换器表现出卓越的性能,包括降低组件应力和提高效率.
- 基准测试证实了相对于现有最先进的转换器的优势.
相关概念视频
Bridge rectifier
627
The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
627
Full wave rectifier
1.2K
A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC) and is more efficient than its half-wave counterpart. It typically includes a center-tapped transformer, two diodes, and a load resistor. The secondary winding of the transformer is divided to provide two equal voltages of opposite polarities, which is the pivotal element of full-wave rectification.
1.2K
Half wave rectifier
1.1K
A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.
1.1K
Fast Decoupled and DC Powerflow
195
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
195
MOSFET Amplifiers
159
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
159
Parallel RLC Circuits
888
Street lamps equipped with RLC surge protectors are an excellent example of applying circuit analysis in practical scenarios. These surge protectors safeguard the lamp's components against sudden voltage spikes.
A simplified parallel RLC circuit model with a DC input source generating a step response is employed in this context. When the switch is turned on, Kirchhoff's current law is applied, leading to a second-order differential equation.
A simplified parallel RLC circuit model with a DC input source generating a step response is employed in this context. When the switch is turned on, Kirchhoff's current law is applied, leading to a second-order differential equation.
888


