The control signals of invertor are produced by space vector modulation to achieve a small torque ripple and constant switch frequency.
以空间矢量调制方法来获得逆变器的开关信号，实现了小的转矩脉动和恒定的开关频率。
The results indicate that the proposed controller is capable of maintaining the torque switching frequency constant and reducing the torque ripple, particularly at low speed.
结果表明提出的控制器可以保持开关频率恒定，并降低了转矩脉动，尤其在低速时。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
Synchronous rectification produces a ripple frequency twice that of the excitation frequency and thus is easier to remove with a lowpass filter.
同步稳压产生两倍激励频率纹波频率，因此更容易被低通滤波器去除。
Finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in SPWM.
文中还提出了抑制谐波电流和脉动转矩的方法，如在SPWM生成中，采用较大的3的整数倍调制比。
The design eliminates the use of the large-valued filter capacitors you usually find in a switching regulator, because there is no need to smooth out high-frequency ripple in the LED current.
这种设计去除了通常在开关电源附近的大滤波电容，因为没有必要对LED电流的高频谐波进行平滑处理。
Small loss at high frequency, high ripple current. Used in s correction of horizontal deflection current in TVs.
高频低损耗，高纹波电流。适用于电视机水平偏转电流校正电路。
Advantages are: high frequency and low impedance, good heat endurance, high withstand voltage, impulsion resistance of high ripple current, and long service life etc.
本发明所得电解液可使铝电解电容器获得高频低阻抗、耐热性好、耐压高、耐高纹波电流冲击、长寿命等优点。
Advantages are: high frequency and low impedance, good heat endurance, high withstand voltage, impulsion resistance of high ripple current, and long service life etc.
本发明所得电解液可使铝电解电容器获得高频低阻抗、耐热性好、耐压高、耐高纹波电流冲击、长寿命等优点。
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