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相关概念视频

Half wave rectifier01:20

Half wave rectifier

800
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.
800
Power Factor Correction01:20

Power Factor Correction

155
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
155
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

692
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
692
Full wave rectifier01:22

Full wave rectifier

800
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.
800
Cascaded Op Amps01:16

Cascaded Op Amps

585
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
585
MOSFET Amplifiers01:17

MOSFET Amplifiers

146
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...
146

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Updated: Jun 4, 2025

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交联的四度高增益直流-直流转换器.

T Sakthiram1, L Yogesh1, Rahul Srikanth1

  • 1School of Electrical Engineering, Vellore Institute of Technology, Chennai Campus, Vellore, India.

Scientific reports
|January 2, 2025
PubMed
概括

本研究介绍了一种新型的高增益直流-直流转换器,可以实现超级升级电压增益. 转换器提供高效率和稳定的输出,使其适合可再生能源应用.

关键词:
电流转换器 DCDC转换器微电网就是一个微电网.电力转换功率的转换.动力电子产品的动力电子.

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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-直流转换器在实现光伏系统等应用所需的超高电压增益方面存在局限性.
  • 交联式增压转换器 (IBC) 具有优势,但通常需要复杂的结构来实现显著的电压乘法.

研究的目的:

  • 提出和验证一种具有超级升级电压增益能力的新型高增益直流-直流转换器.
  • 通过混合方法来增强电压增益,将现有拓和新型增益延伸电池结合起来.
  • 为了证明转换器在各种操作条件下的性能,效率和稳定性.

主要方法:

  • 从两相交联增压转换器 (IBC) 合成了一个新的转换器拓,并结合了电压升降电容器.
  • 实现基于浮电容的增益延伸电池,以进一步提高电压增益.
  • 连接这些阶段以实现四度 (第四级) 电压增强.
  • 通过对16V至400V,150W原型的实验测试验证设计.

主要成果:

  • 原型转换器在400V下实现了150W的输出,具有92.7%的全负载效率.
  • 转换器在动态输入电压和负载变化下表现出稳定的输出调节,超出/超出不足是可以忽略的.
  • 混合电压增长延长技术导致半导体设备的低电压压力和无波纹的输入电流.
  • 在降低10.8V的输入电压下,最大电压增益达到37,同时保持安全的功率比率.

结论:

  • 拟议的转换器有效地实现了超高的升级电压增益,具有高效率和稳定的性能.
  • 与传统转换器相比,混合增益延长技术在电压乘法方面提供了显著的优势.
  • 转换器的特性,包括通地连接和无波纹输入电流,使其非常适合光伏 (PV) 应用.