变换器

Relative study indicate that current doubler rectifier is misfit for high-voltage low-current apply.so This paper proposes a auxiliary net ZVS PWM full-bridge three-level converter, its" improved topology structure and its"topology family in different controlling mode. The principle of these converter is analyzed in detail. Simulation results verify the effectiveness of the proposed converter.

为了进一步简化辅助网络的结构，并解决轻载时，超前桥臂实现软开关困难的问题，提出了一种新型宽负载范围辅助电感ZVS PWM三电平全桥直流变换器，它在基本拓扑结构的基础上只需增加一个辅助电感，利用辅助电感的能量就可以实现宽负载范围内所有开关管的软开关，详细分析了该变换器的工作原理，进行了参数设计和仿真验证。

On the basis of the current situation and developing trend of modeling methods of DC-DC switching converters discussed, a circuit averaging method is put forward to model nonideal basic converters operating in the continuous conduction mode.

在对 DC-DC 开关变换器建模方法的现状及发展趋势进行深入分析的基础上，提出了一种非理想基本变换器在连续工作模式下的电路平均建模方法。

Through analysis and simulation, this paper did some research about the open-circuit fault diagnosis of transistors in three-level inverter.

该文针对三电平变换器的拓扑，通过理论分析和仿真实验，对变换器中的各功率管开路故障诊断进行研究。

Through analysis and simulation, the short- circuit and open-circuit fault diagnosis of transistors in the widely used asymmetric bridge converter were studied.

针对不对称半桥式功率变换器的主电路拓扑，通过理论分析和仿真实验，对变换器中的功率管短路和开路故障诊断进行研究。

This paper proposes a novel zero-voltage and zero-current-switching pwm three-level converter, which introduces a block capacitor in series with the primary winding of the transformer to make the primary current to reduce to zero during zero state.

提出一种新颖的零电压零电流开关PWM三电平直流变换器，它是在基本的三电平直流变换器的变压器一次侧串入一个阻断电容，使一次电流在零状态时减小到零。

This dissertation mainly discussed principal issues of the matrix converter such as realization and application. By the theoretical analysis, computer simulation and experimental investigation, some valuable experiences and significant conclusions were given, which found the technological basis for the matrix converters further practical studies.

本文的研究重点放在了矩阵变换器的应用方式的研究上，通过理论分析、计算机仿真和实验验证得出了一些有意义的经验和结论，为矩阵变换器进一步的实用化研究提供了一定的技术基础。

The application areas of conventional push-pull converters are limited because of high voltage stress of switches.

由于传统推挽直流变换器中开关管的电压应力高，故该变换器的应用范围受到限制。

In this paper, the principle of push-pull forward converter is analyzed in detail, three secondary-side rectifier topologies are studies contrastively and the advantages and disadvantages are compared.

本文详细分析了推挽正激变换器的工作原理，对比研究了该变换器的三种次级整流结构，比较了各自的优缺点。

It consisted of variable reactance converter and electronic power inverter.

它由可变电抗变换器和电力电子功率变换器构成。

The analysis, simulation and experimental results show that MPT control technique has much faster transient response than traditional PWM control technique and much lower output voltage ripple than the pulse train control technique.

研究结果表明，MPT控制变换器比传统PWM控制变换器瞬态性能更好

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。