• 借鉴电流控制电压变换器研究成果,将电流控制的概念引入矩阵变换器

    Referred to the achievement of current controlled voltage source converter, the idea of current control is introduced into MC.

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  • 通过对这种变换器工作原理分析可知,主辅开关可以实现电压电流开关,电压电流应力较小

    Through the operational principle it can be verified that all the switches are capable of achieving ZVS or ZCS condition, and the voltage and current stress are relatively low.

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  • 变换器1控制波正弦电流变换器2被控制为一个可控电压源。

    The converter 1 is controlled as a fundamental sinusoidal current source, and the converter 2 is controlled as a voltage source.

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  • 电感电流断续工作的变换器开关工作开关谐振(或值开关或零电压开关)模式。

    The flyback converter running in discontinuous conduction mode can be operated in hard switching or quasi resonant (or valley switching, or ZVS) mode regarding the primary side switch.

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  • 变换器中的开关管实现了电压下关断,而且其中两个开关管电流电压下开通。

    All switches are turned off with zero voltage switching, and the two switches of them are turned on with zero current and zero voltage switching.

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  • 本文给出的电压电流闭环反馈变换器具有低的电磁干扰水平能够保持输出电压稳定

    The converter with both voltage and current feedback in this thesis not only has a lower EMI lever, but can keep the output voltage steady.

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  • 本文提出了一种新型电压电流开关pwm推挽电平直流变换器其中开关电压应力输入电压

    This paper presents a novel zero voltage and zero current switching (ZCS) PWM push pull three level converter in which the voltage stress of switches is input voltage.

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  • 有害电流检测方法新型UPFC变换器调制方法、新型UPFC直流侧电容电压平衡控制方法等进行深入研究。

    The detecting techniques of harmful currents, the modulation methods of novel UPFC and the balancing control of capacitors voltage on DC link are studied thoroughly.

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  • 为了同时减小电感输入电流输入电压相位差本文提出采用多电平变换器作为PFC变换器拓扑

    To reduce the inductor and the phase displacement between the input current and the input voltage simultaneously, Multi-level (ML) converters are adopted as the PFC topologies in this thesis.

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  • 一般开关电容变换器相比,它还具有直接反馈控制电压电流调整范围宽、器件参数要求不高、集成后成品率高的优点。

    Power inductor is pared with conventional switched-capacitor DC-to-DC converters, the new type is directly controlled by wide regulating range of input voltage and the load.

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  • 仿真实验结果表明提出的变换器输入电流和输出电压正弦谐波且输入功率因数可控实现零电压换流。

    Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation.

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  • 提出了一种新型电压电流变换器拓扑结构

    A novel full bridge (FB)-phase shift (PS)-zero voltage zero current switching (ZVZCS) converter is proposed.

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  • 功率变换器主电路采用电压电流双闭环瞬时值反馈控制方式,电容电压电流瞬时值控制环提高系统稳定性、硬特性稳态特性动态特性。

    The voltage and current real-time feedback control method is adopted, which improves the stability, the stiffness, the static characteristics, and the dynamic characteristics of the system.

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  • 仿真分析结果证明变换器拓扑结构能够使输入电流包络随着收入电压变化,有效的实现功率因数校正

    The simulation result proves: Used this converter's topology structure, the envelope curve of import electric current follows entering voltage change. And power factor correction has been realized.

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  • 三相电压变换器VSC控制的关键在于控制其输入电感电流

    The math model of three-phase VSC is established in this paper, a current control scheme is applied base on the model.

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  • 通过这种设计方法,使变换器一定输出电压范围平均电流应力最小,并且使变换器在一定输出电压范围内基本实现开关

    Average current stress is minimized in a range of output voltage, and the converter can achieve ZVS in the range of output voltage.

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  • 谐振、谐振或多谐振技术方案,变换器电压电流应力较高

    However, voltage and current stress in these converters are higher.

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  • 采用新型相控制电压电流开关PWM全桥变换器拓扑研制成2 8.5V/10 0A航空电子变压整流器。

    An electronics transformer rectifier unit(TRU)with the output of 28.5V/100A DC is developed by using a novel phase shifted zero voltage and zero current switching PWM converter topology.

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  • 对工作模态进行分析,给出变换器在各个工作模态等效电路以及谐振电压电流时域表达式

    The equivalent circuits and the expression of the current and the voltage of the resonant thank are shown with time-domain analysis.

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  • 实验结果表明设计开关变换器输出电压精度纹波效率最高达到88 %,适用低压电流负载设备

    Experimental results show that the output voltage of the designed converter has high precision, small ripple and up to 88% efficiency, suitable for low-voltage high-current load devices.

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  • 分析一种新颖电压电流(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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  • 最后通过仿真分析50V/20A样机调试实验验证了电压电流移相控制PWM三电平直流变换器工作原理

    Finally, the operation principle of Zero-voltage and Zero-current-switching PWM three-level converter is validated by the simulation analyze and the debugging experiment of 50V/20A sample device.

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  • 全桥直流变换器开关技术分为零电压开关ZVS电压电流开关(ZVZCS大类。

    There are two soft-switch schemes of phase-shift full-bridge DC/DC converter: zero-voltage switching (ZVS) and zero-voltage zero-current switching (ZVZCS).

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  • 全桥直流变换器开关技术分为零电压开关ZVS电压电流开关(ZVZCS大类。

    There are two soft-switch schemes of phase-shift full-bridge DC/DC converter: zero-voltage switching (ZVS) and zero-voltage zero-current switching (ZVZCS).

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