电压频率变换器?。
构成地层转移一交流电念头经过一个齿轮箱驾驶，被一台频率变换器供给。
The Layer Forming Transfer is driven by an AC motor through a gearbox, supplied by a frequency converter.
基于输出电压表达式，还提出谐振开关电容变换器的频率控制方案。
A frequency control method for RSC converters was achieved based on the output voltage expression.
结果表明，该控制方案能在恒定开关频率下对变换器实现高效率的软开关控制。
The results show that this control scheme could realize the high efficiency soft-switch control under the constant switching frequency to the converter.
通过交错控制和提高开关频率，大大减小了变换器的体积和重量。
Moreover, the size and weight of the converter can also be reduced by interleaving technique and increasing the frequency.
其次，分析了发生频率分叉现象时工作频率该如何选择，并利用反映阻抗的概念分析了变换器的功率传输能力。
Secondly, how to choose the switching frequency when bifurcation phenomena occurs is analyzed, besides, the transfer capability is also analyzed using the conception of reflection impedance.
将三电平技术应用到双向DC/DC装置中，可以提高混合动力汽车驱动系统中双向DC/DC装置的开关频率，为此提出了一种新的三电平双向DC/DC变换器拓扑。
To improve the switch frequency of the bidirectional DC/DC converters in Hybrid Electrical Vehicle(HEV), a novel three-level topology of the bidirectional DC/DC converter is presented in this paper.
结果表明，所设计的直流开关型变换器集成模块输出电压稳定、纹波小、工作频率，高、功耗低，且体积小。
It has been shown that the designed DC switching mode converter has a stable output voltage frequency, small ripple, high operating frequency and low power consumption.
在硬开关状态下，PWM功率变换器的致命弱点是开关管开关损耗随开关频率成正比增加，不利于系统的集成和转换效率的提高。
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.
为了实现开关磁阻电机(SRM)绕组电流或磁链的精确控制，必须提高SR M功率变换器的工作频率以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.
在开关频率较低的情况下，大功率PWM变换器的谐波可能会更大，并对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).
除了工作在固定的开关频率模式外，由于更小的开通损耗和更好的EMI性能，准谐振工作模式在反激式变换器中得到较广泛的应用。
Besides switching at a fixed frequency for Flyback converters, quasi-resonant mode is widely used due to its lower switch-on losses and better EMI performance.
探讨了混沌频率调制技术在开关变换器中抑制电磁干扰的实际效果。
The paper presents the effectiveness of EMI suppression of switching converters with a chaotic frequency modulation scheme (CFMS).
结合矩阵变换器双空间矢量调制方法，并将矩阵变换器过调制方法用于感应电机直接转矩控制中，达到矩阵变换器开关频率恒定和电机快速转矩响应的目的。
Double space vector modulation and overmodulation of matrix converter were proposed in this paper to ensure the matrix converter switching frequency to be fixed and fast dynam-ic torque response.
随着采样频率和A/D变换器位数的增加，时钟抖动和相位噪声对数据采集系统性能的影响更加显著。
The effect of clock jitter and phase noise on data acquisition system performance is more profound as the increase of sampling frequency and the bit of A/D converter.
开关电容DCDC变换器的输出功率受电容网络中电容取值及开关频率的限制，电容器的集成是开关电容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.
分析了级联H桥型变换器的工况，讨论了载波带频率变化的PWM（VFCB-PWM）技术，提出了基于VFCB-PWM技术的级联H桥型多电平变换器。
The principle of cascade H-bridge converter is analyzed. Variable-Frequency Carrier Bands PWM(VFCB-PWM) technique is discussed. Cascade H-bridge converter based on VFCB-PWM technique is proposed.
分析了级联H桥型变换器的工况，讨论了载波带频率变化的PWM（VFCB-PWM）技术，提出了基于VFCB-PWM技术的级联H桥型多电平变换器。
The principle of cascade H-bridge converter is analyzed. Variable-Frequency Carrier Bands PWM(VFCB-PWM) technique is discussed. Cascade H-bridge converter based on VFCB-PWM technique is proposed.
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