低电容应力可重新配置的二级增压转换器,具有用于屋顶太阳能光伏应用的容错能力
J Divya Navamani1, K Boopathi2, A Lavanya3
1Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India. divyanaj@srmist.edu.in.
Scientific reports
|November 16, 2024
概括
一个新的容错的可重新配置的二级增压转换器提供可靠的直流微电网电源. 这种转换器在故障时保持电压增益,增强系统稳定性并减少电容器应力.
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:
- 现有的高增益转换器往往缺乏故障耐受能力,在DC微电网等关键应用中构成可靠性挑战.
- 对于强大且连续运行的功率转换系统的需求,需要能够承受组件故障的先进拓.
研究的目的:
- 为DC微电网应用提供适合新型故障耐受,可重新配置的二级增压转换器.
- 引入具有固有的2级冗余的拓,以提高对开关和电容器故障的可靠性.
主要方法:
- 详细分析转换器在正常条件下和故障后重新配置模式下运行的情况.
- 通过解决开关和电容器的潜在故障来实现故障容忍.
- 在两个运行状态下对电容器的可靠性分析,与行业标准进行基准测试.
主要成果:
- 拟议的拓在重新配置模式下成功地保持与正常运行中的相同电压增益.
- 在重新配置状态中观察到输入和输出电容器的电压应力显著减少.
- 通过1kW硬件原型验证转换器的性能,确认稳定的运行和降低压力.
结论:
- 容错的可重新配置的二级增压转换器为直流微电网提供了可靠的解决方案,确保了连续的电力供应.
- 拓在不改变电压增益和降低电容应力的情况下运行的能力提高了整体系统的稳定性和寿命.
相关概念视频
Power Factor Correction
157
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.
157
Voltage Doubler Circuit
480
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
480
Bridge rectifier
526
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...
526
Half wave rectifier
908
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.
908
Full wave rectifier
840
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.
840
Fast Decoupled and DC Powerflow
175
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:
175


