1) zero-crossing method
过零法
2) measurement of over-zero method
过零法测量
3) switch current zero crossing point
正反组电流过零法
4) zero-crossing
过零
5) zero crossing triggering
过零触发
1.
The AVR singlechip is used for the core of controller,the automatic compensation optimum control method is established based on reactive power compensation principle,the problem of thyristor switched wrong trigger is solved by the technology of zero crossing triggering,switched vibration i.
采用AVR单片机系统作为控制器的核心,从无功补偿原理出发,建立了自动补偿最优控制方法,采用过零触发技术解决了晶闸管投切误触发的问题,减少了投切振荡,动态响应速度快。
2.
In this article,the authors discuss how to implement the full automatic real time compensation of reactive power using several methods:a)applying "Power Trac" module,b)acguiring the system parameters,c)connecting/disconnecting the capacitors block based on the reactive power of the system by means of zero crossing triggering of SCR components.
应用 Power Trac模块 ,采集系统参数 ,根据系统的无功电流 ,通过可控硅元件过零触发技术 ,投入 /切除电容器组 ,以达到无功功率的全自动实时补
6) zero-crossing point
过零点
1.
This method directly extracts the true back electromotive force(EMF) zero-crossing point by detecting the voltage difference between the floating phase terminal and the midpoint in the DC link.
为了实现无刷直流电机的无位置传感器控制,提出了一种新颖的转子位置信号检测方法,该方法通过比较逆变器直流环中点电压和电机断开相绕组端电压的关系,直接检测到断开相绕组反电动势的过零点,再将该过零点延迟30°电角度即可获得无刷直流电机绕组换相所必须的转子位置信号。
参考词条
补充资料：零息票债券；零券息债券
零息票债券；零券息债券一种以低于票面价值的价格发行的债务工具。债券不支付任何票息；它在到期日是以面值赎回的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。