• 课题针对开关功率变换器小型化绿色化进行研究

    This paper is mainly focus on the research of small size and greenness of switching power converter.

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  • 精细积分引入开关功率变换器时域响应分析中。

    A new precise time - integration method is introduced into the analysis of time domain response to switched power converters.

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  • 介绍PWM开关功率变换器电路统一建模方法谐波分析方法应用于电路分析

    This paper introduces the method of unified modeling for PWM switched converter, and draws the analytic method of harmonic balance into the analysis of the circuit.

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  • 简单介绍DC-DC 开关功率变换器线性分析方法线性控制方法,以及DC-DC 功率变换器离散映射模型分析及其混沌控制的意义现状

    Linear analytical and linear control methods are compendium. Meaning and present status about analysis of discrete map mode on DC-DC converters and their chaos control are generalized.

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  • 介绍三相开关功率因数变换器应用复杂可编程逻辑器件(CPLD)实现逻辑控制部分的方案

    This paper introduces a scheme in which a complex programmable logic device (CPLD) is used in the three phase three pole switch high rating factor convertor to realize logic control.

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  • 该文提出了一类基于变换器单级不间断功率因数直流开关电源电路结构拓扑族

    Novel circuit structure and topologies of single-stage DC switching power supplies with uninterruptible power supply and high power factor, based on flyback converter, are proposed.

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  • 开关技术能够有效改善功率开关工作环境降低开关损耗提高变换器效率

    Soft switching technique could improve the circumstance of the power switch, reduce the losses and increase the efficiency of the converter.

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  • 装置电路脉冲形成变换器和光功率开关部分组成。

    The circuit of this device is formed the source, pressed frequently by the pulse changer, photosensitive resister and power switch three parts make up.

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  • 利用电压空间矢量调制(SVPWM)信号变换控制功率变换器开关器件导通占空实现异步电动机速度调节

    Using space vector pulse-width modulation (SVPWM) signal transformation method, speed regulation of induction motor is implemented by controlling the duty ratio of every converter switch.

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  • 为了实现开关磁阻电机(SRM)绕组电流精确控制必须提高SR M功率变换器的工作频率提高系统的动态响应速度

    To achieve the precision control of phase current or phase flux linkage in switched reluctance motor (SRM), the higher switching frequency of converter is required to increase dynamic response speed.

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  • 考虑到系统功率较大,三相桥式功率变换器每个开关器件均采用四个MOS并联的结构。

    For high power system, every switch of three-phase inverter is actually made up of four MOSFETs in Parallel.

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  • 提出零电压开关功率因数变换器电路

    The paper presents a kind of zero-voltage soft-switching unity power factor converter.

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  • DC开关变换器非线性程度很高输入电流为非正弦形式,功率因数

    AC/DC switching converters are highly nonlinear. Therefore they draw a non-sinusoidal current with a very low power factor.

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  • DSP发出控制信号芯片IR 2110驱动放大,在移相驱动信号控制下可以实现变换器功率开关ZVS

    The DSP sends out the phase shifting control signal and then that amplified by IR2110 chip. It can realize ZVS of the full bridge converter main power switch by the phase shifting drive control.

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  • 解决开关器件多电平高压功率变换器驱动保护问题提出了一种光纤隔离的驱动保护电路

    The circuit isolated by optical fibre for transmitting drive signals and avoiding over current is proposed to solve drive and protection problems for transistors in high-voltage multi-level convertor.

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  • 开关状态下,PWM功率变换器致命弱点开关开关损耗开关频率正比增加不利于系统集成转换效率提高

    The shortcoming of hard switch is that the power loss of power devices increases with the switching frequency, which is no good for system integration and improvement of conversion efficiency.

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  • 介绍一种变压隔离器、多个功率开关器件的PWM变换器工作连续状态建模方法

    A new method is introduced for modeling PWM DC-DC converter with multi-switches and transformers, which operate in continuous conduction mode, including parasitic components.

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  • 然而由于漏感影响,反变换器功率开关引起电压尖峰必须钳位电路加以抑制。

    However, due to leakage effects flyback converter power switch off when the voltage spike caused by the need to be inhibited by clamping circuit.

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  • 介绍了一种普通开关电源专用集成电路控制块作为控制电路升压变换器作为功率电路的功率因数校正电路。

    Describes a power factor correction (PFC) circuit, in which the power circuit is a boost converter controlled general switch mode controller IC.

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  • 这三者开关电容变换器高效率EMI体积小的特点在便携式产品中小功率应用场合得到了广泛的应用。

    Among them, switched capacitor DC-DC converters have got wide applications in portable products and small and medium-power areas due to their high efficiency, small EMI and small size.

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  • 新型材料特别适用开关电源中的功率变换器即使满载时也可达到最佳效率

    The new material is thus particularly suitable for power converters in switch-mode power supplies, allowing optimized efficiency even at partial load.

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  • 开关频率情况下,功率PWM变换器谐波可能会更大,电力电子设备造成损坏或产生电磁干扰影响通讯。

    The harmonic distortions of the high power PWM converters increase more with low switching frequency, which may destroy the devices used in the system and result in electromagnetic interference (EMI).

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  • 电路采用具有无源辅助谐振网络管正激变换器普通双管正激变换器相比,功率开关状态得到较好的改善,同时并没有增加电路的复杂性。

    This paper introduces the circuit topology of portable inverter arc welder with soft snubber, mainly power circuit is a double switch forward converter with assistant resonant circuit.

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  • 开关功率放大器由于开关变换器本身固有非线性失真通常大于传统的线性放大器。

    The distortion introduced by switching power amplifier is typically larger than in their liner counterparts due to intrinsic nonlinearity of switching converter.

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  • 分析一种新颖电压零电流(ZVZCS)开关电平变换器以及功率晶体管驱动电路

    A novel zero-voltage and zero-current switching (ZVZCS) three-level converter, and the drive circuit of the transistor were analyzed.

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  • 通过设置时间实现开关功率器件电压开通断,利用变换器研制出GTO门极驱动电源

    The turn-on and turn-off of power devices under zero voltage are realized with addition of dead time. The power supply for GTO gate driver is developed by use of the converter.

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  • 对于功率电力电子变换器控制而言,其最为核心问题如何产生电力电子开关器件脉冲信号。

    The modulation technique for high power PWM converters is a key issue for high power PWM converter control.

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  • 结果表明变换器良好零电压软开关特性负载特性较高功率转换效率较低电磁辐射

    The results show that the converter have good ZVS and a special property of loading character, and it has a higher efficiency of power conversion and lower EMI.

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  • 本文分析X射线管外特性基础上,设计制作开关电源功率电路分析有源功率因数校正器原理LCC谐振变换器原理及倍压整流电路原理。

    This paper based on analyzing the X-Ray tube designs the switching power supply circuit, analyzes the principle of APFC, LCC half bridge resonance convertor and dual rectifier circuit.

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  • 开关电容DCDC变换器输出功率受电容网络中电容取值开关频率限制,电容器的集成开关电容DCDC变换器集成的关键。

    The output power of the switched capacitor DC DC converter is restricted by the capacitance of the series parallel(SP)capacitors and the switching frequency.

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