无刷直流电动机在高性能驱动应用中具有良好的调整性能、高电压、高转矩、高体积比以及无电刷的优点。
Brushless direct current motors and have advantages of good adjustment performance, high voltage, high torque, high volumes ratio in high performance drive.
本文介绍一种新型的直流开关电源，该电源是一种直流电压输入，三种直流电压输出，并能够达到相当高的效率。
A new type of DC switch power which is possessed a DC voltage input and three DC voltage output, and is able to reach higher efficiency has been introduced in this paper.
PWM整流器具有功率因数高、能量可双向流动、直流电压恒定等优点。
PWM rectifiers have the characteristics of large power factor, bidirectional power flow and constant direct voltage.
高电压小功率DC - DC电源变换装置，是一种利用低压直流电源产生高电压的电源装置。
High voltage low power DC-DC converter is designed for converting low voltage DC current into high voltage one.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
此直流电压经过LM 7805的稳压和C3的滤波便在稳压电源的输出端产生了精度高、稳定度好的直流输出电压。
The dc voltage after LM7805 on voltage stability and C3 filtering was manostat an output terminal of the produced high precision, stability good dc output voltage.
内部的功率因数校正（PFC）电路以临界导通模式（CCM）工作，可获得高功率因数、低总谐波失真（THD）及直流电压调整。
PFC circuitry operates in critical conduction mode(CCM)and provides for high PF, low THD and DC bus regulation.
然后根据交流侧和直流侧的功率平衡方程，推导了电压环的小信号模型。最后基于该模型设计了一种高动态性能的直流电压调节器。
Subsequently, a novel controller for DC bus voltage regulation is put forward according to the small signal model based on the instantaneous power balance in AC and DC sides of three-phase SAPF.
SVPWM物理概念清晰、算法简单、对直流电压利用率高，易于实现数字化，是现在研究的热点之一。
Because the conception of SVPWM is clear, the arithmetic is simple, and it has high utilization of DC voltage, especially ease of being digitized, SVPWM is now popular in research.
介绍了一种能够可靠切换混合动力汽车高电压、直流电机负载的继电器解决方案。
This text introduces a relay solution of reliably switching high-voltage DC motor load for Hybrid Electric Vehicle.
正如本书第一章所述，高源内阻的测量包括：低直流电压、弱直流电流、高电阻和电荷的测量。
As described in Section 1 of this handbook, measurements made from high resistance sources include low DC voltage, low DC current, high resistance, and charge measurements.
正如本书第一章所述，高源内阻的测量包括：低直流电压、弱直流电流、高电阻和电荷的测量。
As described in Section 1 of this handbook, measurements made from high resistance sources include low DC voltage, low DC current, high resistance, and charge measurements.
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