60[公式:参见文本]平面PWM技术用于单源开关电容多级逆变器,具有四倍的电压提升和增强输出
Oorappan G M1, Lakshmanan S A2, Jagabar Sathik M3
1Mechatronics Engineering, Bannari Amman Institute of Technology, Erode, 638401, Tamil Nadu, India. oorappan@bitsathy.ac.in.
Scientific reports
|July 3, 2025
概括
一种新的60度平面脉冲宽度调制 (PWM) 技术用于单源交换电容器多级逆变器与四倍提升 (SC MLI-QB) 减少交换损失和增强电压增益. 这种方法实现了九个输出级别,并改进了正弦波平整.
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:
- 多级逆变器 (MLI) 对于功率转换至关重要.
- 开关电容器 (SC) MLIs在电压提升方面具有优势.
- 现有技术在效率和输出波形质量方面面临挑战.
研究的目的:
- 为SC MLI-QB引入一个新的60度平面PWM (60FP) 技术.
- 为了提高输出电压水平和提高效率.
- 为了最大限度地减少逆变器输出中的波含量.
主要方法:
- 实施60FP技术,用于单源SC多层逆变器,具有四倍提升 (60FP-MLI-QB).
- 在逆变器拓中使用11个开关,2个电容器和一个二极管.
- 修改正弦调制引用以实现波最小化.
主要成果:
- 实现了9个输出电压水平,并减少了开关损失.
- 证明增加了电压增益增强和正弦波在峰值处平坦化.
- 在动态条件下通过模拟和硬件实验验证实性能.
结论:
- 拟议的60FP-MLI-QB与现有配置相比,提供了卓越的性能和灵活性.
- 该技术通过修改的PWM策略有效地将和声最小化.
- 这一进步有助于实现更高效,更高质量的电力转换.
相关概念视频
Voltage Doubler Circuit
878
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.
878
Design Example: Capacitance Multiplier Circuit
976
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.
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.
976
Half wave rectifier
1.7K
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.
1.7K
Full wave rectifier
1.8K
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.
1.8K
Power Factor Correction
275
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.
275
Bridge rectifier
857
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...
857


