提出了一种基于逆变器开关占空比的定子磁链估计方法。
This paper presents a stator flux estimation method based on the duty cycles of inverter switching.
在不同的光伏电池运行点采用不同的跟踪方法，通过直接控制直流斩波器开关占空比以达到快速准确的功率跟踪效果。
Different tracking approaches are applied at different operating points and the duty cycle of DC chopper is directly controlled to achieve the optimum control results.
只需检测两相电源电流和直流侧电容电压，通过简单计算就可直接求出每个开关周期内各开关的占空比。
The duty ratios of switches in each switching cycle can be directly obtained by simple calculation using two phases source currents and dc bus capacitor voltage.
基于这些方程，研究了实现软开关的条件，并从关断损耗和占空比丢失的角度探讨了吸收电容与电路最高工作频率的关系，给出了工程设计公式。
Based on the equations, the condition of ZVS is analyzed, and the engineering design method of highest working frequency is discussed, which is based on dissipation of turning off and duty cycle lose.
重点讨论了超前管、滞后管实现零电压开关的差异以及副边占空比丢失的原因。
The difference of leading switches and lagging switches to realize the zero-voltage switching and the reason of duty-cycle loss is emphatically argued.
与传统电路相比，它具有较宽的零电压开关负载范围、较小的环流能量和较小的占空比损失。
The novel converter has advantages such as wide ZVS load range, low circulating energy and low duty cycle losscomparing to the traditional PSFB-ZVS-PWM converter.
利用电压空间矢量脉宽调制(SVPWM)信号变换控制功率变换器各开关器件的导通占空比，实现异步电动机的速度调节。
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.
对于大多数功率脉冲发生器，其输出电压级别、占空比、使用寿命都是由开关器件的能力所决定的。
For most pulsed power generators, the output power level, the repetition rate, and the lifetime are determined by the capability of the switches.
当门开关关闭(车门打开)的引脚电压慢慢上升8以上的三角形产生短期占空比输出波形的负峰和一个暗淡的灯光。
When the door switch is closed (car door open) the voltage on pin 8 slowly rises above the negative peaks of the triangle wave producing a short duty cycle output and a dim light.
然后通过对几种典型电路网络的特性分析，提出了利用开关变换网络结合占空比控制设计以解决燃料电池与负载的匹配问题的思想。
After analysis of the characteristics of some typical circuit networks, the method of using switching mode network integrated with duty cycle control to solve the matching problem is proposed.
在该加速期间结束时，以占空比与速度指令数据对应的PW M脉冲来控制开关机构，从而驱动该直流马达。
When the acceleration period has terminated, the switch means is controlled by a PWM pulse of the duty ratio in accordance with the speed instruction data, there by driving the DC motor.
在该加速期间结束时，以占空比与速度指令数据对应的PW M脉冲来控制开关机构，从而驱动该直流马达。
When the acceleration period has terminated, the switch means is controlled by a PWM pulse of the duty ratio in accordance with the speed instruction data, there by driving the DC motor.
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