例句與用法

1. The control tactics of space voltage vector are investigated , and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward . by analyzing the current hysteresis control , the relation between switch frequency , and hysteresis bandwidth and input inductance of pwm rectifier is deduced . by applying instantaneous power theory , the principle of pwm rectifier power control is analyzed , and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized , and the simulation results prove that it is correct
   對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，并驗證了該控制方法的正確性。