Dynamometer for Testing Frequency Inverter Performance Andres Calle Otero, Alexander Sawyer, Christian Ratliff Advanced Power Electronics and Electric Drives Lab (APEDL) ECE Department and Center for Clean Energy Engineering C2E2 09/28/ /9/2014 Copyright © 2014 – Advanced Power Electronics & Electric Drives Lab (APEDL)

Visual Basic Visual Basic 6.0 is free to download. Capable of object oriented programming. Free MODBUS toolkit. Links directly to MS Excel: beneficial for creating nice looking graphs. Capable of CANopen communication, not well supported. 2

Discussion with NI Use of CANopen will require a PCI CANopen card NI has a Robust Card for $1, Advantech option $ LabVIEW CANopen Library: $ Comparatively MODBUS can use Ethernet connectivity. Windows CE no longer supported by LabVIEW, possibility of using HMIto call a separate LabVIEW.exe 3

LabVIEW GUI: Basic Tests 4

LabVIEW GUI: Periodic Tests 5

LabVIEW GUI: Real Time Tests 6

Lenze Software? 7 MotionView HMI Drive Control Long term, what are the expectations of the GUI? If the team’s project is a one shot deal, what are the MUST have criteria? Are there aesthetic calibrations to existing data sets required?

Feasible System Diagrams 8 Computer GUI with PLC Control and Analog/Digital Communication Advantages No need for Ethernet Switch Can use standard drive A/D ports Computer supports wide variety of GUI options Disadvantages May need external signal conditioning components PLC needs more A/D inputs and outputs making it more costly

Feasible System Diagrams 9 Advantages Computer supports wide variety of GUI options Use of Modbus protocol throughout the design reduces design complexity Disadvantages Communication rate between the computer and drives is slower Computer GUI with PLC Control and Modbus Communication

Feasible System Diagrams 10 Advantages Computer supports wide variety of GUI options No need for PLC More direct communication Modbus reduces complexity Disadvantages More extensive communication programming on the computer Computer GUI with Modbus Communication

Feasible System Diagrams 11 Advantages Touchscreen Possibly all Lenze product Use of Modbus reduces complexity Disadvantages HMI does not support as may GUI options Communication rate between the HMI and drives is slower HMI GUI with PLC Control and Modbus Communication

Feasible System Diagrams 12 HMI GUI with Modbus Communicaiton Advantages Touchscreen Possibly all Lenze product No need for PLC More direct communication Use of Modbus reduces complexity Disadvantages HMI does not support as may GUI options

PLC 13 What is the benefit in using a PLC? A huge disadvantage is the complexity it adds to the design. If we do use a PLC, we should use a Lenze PLC from the start since the coding format is standard and open source support is readily available.

Future Slides Idea 14 In future slides we should compile all of the data into a presentable form that directly contrasts different options with Pros and Cons