借鉴电流控制电压型变换器的研究成果,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.
通过对这种变换器的工作原理分析可知,主辅开关管都可以实现零电压或零电流开关,且电压、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.
变换器1被控制为一个基波正弦电流源,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.
电感电流断续工作的反激式变换器一次侧开关可工作于硬开关或准谐振(或谷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.
该变换器中的开关管实现了在零电压下关断,而且其中两个开关管在零电流零电压下开通。
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.
本文给出的电压、电流闭环反馈型变换器,既具有较低的电磁干扰水平,又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.
本文提出了一种新型的零电压零电流开关pwm推挽三电平直流变换器,其中开关管的电压应力为输入电压。
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.
对有害电流检测方法、新型UPFC的变换器的调制方法、新型UPFC直流侧电容电压的平衡控制方法等进行了深入研究。
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.
为了同时减小电感和输入电流与输入电压间的相位差,本文提出采用多电平变换器作为PFC变换器的拓扑。
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.
与一般开关电容变换器相比,它还具有直接反馈控制、电压和电流调整范围宽、对器件参数要求不高、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.
仿真和实验结果表明:所提出的变换器输入电流和输出电压为正弦,谐波小且输入功率因数可控,并可实现零电压换流。
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.
提出了一种新型的全桥移相零电压零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.
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,电容电压和电流瞬时值控制环提高了系统的稳定性、硬特性、稳态特性及动态特性。
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.
仿真分析结果证明:该变换器拓扑结构能够使输入电流的包络随着收入电压变化,有效的实现了功率因数校正。
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.
三相电压型变换器(VSC)控制的关键在于控制其输入电感上的电流。
The math model of three-phase VSC is established in this paper, a current control scheme is applied base on the model.
通过这种设计方法,可使变换器在一定输出电压范围内平均电流应力最小,并且使变换器在一定输出电压范围内基本实现软开关。
Average current stress is minimized in a range of output voltage, and the converter can achieve ZVS in the range of output voltage.
谐振、准谐振或多谐振技术方案,变换器的电压电流应力较高。
However, voltage and current stress in these converters are higher.
采用一种新型移相控制零电压零电流开关PWM全桥变换器拓扑,研制成2 8.5V/10 0A的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.
对工作模态进行分析,给出了变换器在各个工作模态的等效电路以及谐振槽电压和电流的时域表达式。
The equivalent circuits and the expression of the current and the voltage of the resonant thank are shown with time-domain analysis.
实验结果表明,设计的开关变换器输出电压精度高,纹波小,效率最高达到88 %,适用于低压大电流的负载设备。
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.
分析了一种新颖的零电压零电流(ZVZCS)开关之电平变换器,以及功率晶体管的驱动电路。
A novel zero-voltage and zero-current switching (ZVZCS) three-level converter, and the drive circuit of the transistor were analyzed.
最后,通过仿真分析和对50V/20A样机的调试实验,验证了零电压零电流移相控制PWM三电平直流变换器的工作原理。
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.
移相全桥直流变换器的软开关技术分为零电压开关(ZVS)和零电压零电流开关(ZVZCS)两大类。
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).
移相全桥直流变换器的软开关技术分为零电压开关(ZVS)和零电压零电流开关(ZVZCS)两大类。
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).
应用推荐