Variable Frequency Drives Troubleshooting

Introduction: The City of Winnipeg has initiated a program to perform upgrades to the wastewater treatment systems at the NEWPCC, SEWPCC, and WEWPCC facilities. As part of these upgrades, automation systems are required for process control and monitoring. These automation systems must be installed to provide effective monitoring and control of the wastewater treatment processes. There are many methods of implementing an automation system, and the purpose of this document is to provide an overall strategy for automation installations that are consistent with the City’s needs. It is expected that this document will form the basis for future design work.

SCADA is an acronym for Supervisory Control and Data Acquisition ❑ Data Acquisition : Gathers information from widely distributed processes ❑ Supervisory Control : Calculate and give limited control instructions to distant process facilities

Introduction:  This manual gives a brief description of state-of-the-art technologies used to develop high efficiency motors, including premium efficiency induction motors, permanent magnet motors, and switched reluctance motors. It also analyses issues that affect motor system efficiency and provides guidelines on how to deal with those issues namely by:  Selection of energy‐efficient motors  Properly sizing of motors;  Using Variable Speed Drives (VSDs), where appropriate. The use of VSDs can lead to better process control, less wear in the mechanical equipment, less acoustical noise, and significant energy savings;  Optimisation of the complete system, including, the distribution network, power quality and efficient transmissions;  Motor Systems Energy Assessments  Taking Measurements  Applying best maintenance practices.  Motor Repair  How to win approval for energy efficiency projects  Energy Management Systems