会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • System specific fluid flow control with induction motor drive
    • 具有感应电机驱动的系统特定流体流量控制
    • US06472843B2
    • 2002-10-29
    • US09764667
    • 2001-01-18
    • Michael D. SmithThien Q. TranChristopher Douglas SchockJames R. PetersonParimalalagan Ramachandran
    • Michael D. SmithThien Q. TranChristopher Douglas SchockJames R. PetersonParimalalagan Ramachandran
    • H02P124
    • F04D27/00
    • An apparatus and method for controlling a motor/blower system to provide a constant fluid flow by iteratively loading revised stator frequency values and stator voltage values to a variable frequency drive. Target DC bus current values corresponding to constant fluid flow rates are predetermined and stored as a function of the desired fluid flow rate, the operating frequency, and system specific constants or calculated by the controller as a function thereof during system operation. Actual DC bus current is measured with a current sensor and compared with the target DC bus current. Operating frequency is estimated using a PI controller based on the difference between measured and target DC bus current values. Operating voltage values corresponding to operating frequencies and system specific constants are predetermined and stored in memory or calculated by the controller during system operation. An updated target DC bus current, operating frequency and operating voltage are determined upon each iteration. The updated operating frequency and operating voltage are loaded as control variables to the variable frequency drive upon each iteration.
    • 一种用于通过将修正的定子频率值和定子电压值迭代地加载到变频驱动器来控制电动机/鼓风机系统以提供恒定流体流量的装置和方法。 对应于恒定流体流速的目标DC总线电流值是预定的,并且作为系统操作期间作为其功能的期望流体流速,操作频率和系统特定常数或由控制器计算的存储。 使用电流传感器测量实际的直流母线电流,并与目标直流母线电流进行比较。 基于测量和目标直流母线电流值之间的差异,使用PI控制器估算工作频率。 对应于工作频率和系统特定常数的工作电压值被预先确定并存储在存储器中或由系统操作期间的控制器计算。 每次迭代确定更新的目标直流母线电流,工作频率和工作电压。 在每次迭代时,更新的工作频率和工作电压作为控制变量加载到变频驱动器。