Invention Application
WO2007022164A2 SYSTEM AND METHOD FOR PARALLEL CONTROL OF VARIABLE FREQUENCY DRIVES
审中-公开
用于变频驱动器并行控制的系统和方法
- Patent Title: SYSTEM AND METHOD FOR PARALLEL CONTROL OF VARIABLE FREQUENCY DRIVES
- Patent Title (中): 用于变频驱动器并行控制的系统和方法
-
Application No.: PCT/US2006031800Application Date: 2006-08-14
-
Publication No.: WO2007022164A2Publication Date: 2007-02-22
- Inventor: FLAUGHER JR RALPH , FUKUTA YUSUKE , GAILLOT RONALD , RASTOGI MUKUL , SCHNEIDER ANTHONY C
- Applicant: SIEMENS ENERGY & AUTOMAT , FLAUGHER JR RALPH , FUKUTA YUSUKE , GAILLOT RONALD , RASTOGI MUKUL , SCHNEIDER ANTHONY C
- Assignee: SIEMENS ENERGY & AUTOMAT,FLAUGHER JR RALPH,FUKUTA YUSUKE,GAILLOT RONALD,RASTOGI MUKUL,SCHNEIDER ANTHONY C
- Current Assignee: SIEMENS ENERGY & AUTOMAT,FLAUGHER JR RALPH,FUKUTA YUSUKE,GAILLOT RONALD,RASTOGI MUKUL,SCHNEIDER ANTHONY C
- Priority: US70806605 2005-08-12; US50332706 2006-08-11
- Main IPC: H02P21/00
- IPC: H02P21/00 ; H02M7/48
Abstract:
A method for controlling at least two variable frequency drives connected in parallel. The method comprises, for each variable frequency drive, communicating a magnetizing current component value to a master controller, and receiving a speed demand, a flux demand, and an average magnetizing current component value from the master controller. The method also comprises determining a motor speed and a motor flux based on measurements of a stator voltage and current of a motor coupled to the variable frequency drive, determining a speed reference based on a torque current component value, and determining a flux reference based on the magnetizing current component value and the average magnetizing current component value. The method further comprises adjusting a torque current component based on the speed reference and/or adjusting a magnetizing current component based on the flux reference.
Information query