UWM electrical energy laboratories are housed in the second floor of the USR building. This building is a large two-story facility (formally Square-D manufacturing facility). The first floor of the facility houses UWM physical plants offices and shops. The second floor is dedicated to energy research. The labs on this floor include Center for Sustainable Electrical Energy Systems, Power Electronics and Electric Drives Laboratory, Wind Tunnel Lab, etc.

Power Electronics and Electric Drives laboratory is very active and has been conducting funded research on many projects over the years. Sponsors for the projects include industry (M-WERC, JCI, GE, Eaton, Rockwell, etc) and federal agencies (DOE, NSF, and DOD).

The power electronics lab is a 2000 sq-ft lab with over 500kVA power supply capabilities (three-phase 480 and 208). Facilities include:

• Full packages of MATLAB/Simulink, PSIM, PSS/E, and PSCAD are available for software simulation.
• Equipment including: high power AC and DC sources (16kW, 480VAC and two 20kW, 800VDC)
• A 500 MHZ, 4 channel Lecroy LT364L oscilloscope with PMA1 power measure analysis software, current probes
• Four 4-channel, 200MHz Tektronix 4000 series oscilloscopes
• Two synchronous generators 63 kVA
• Three double conversion inverters 45 kVA, and one induction generator 26 kVA
• Two 30hp induction motor, 21kW resistive load
• One wind turbine emulator with 75 hp induction motor and two 50kW generators
• 50kWh zinc bromide storage with grid connection circuitry
• Lithium-Ion capacitor modules (one 360VDC, 9F module and one 750VDC, 5.1F module)
• Power electronics components includes switches, gate drivers, power supplies, and heat sinks
• Two dSPACE packages are available to design the controller in Simulink and download to Digital Signal Processors.
• Three National Instruments Compact RIO modules with digital/analog input/output cards, relay input/output cards, communication cards, etc.

Other equipment include a 125 kW buck-boost converter and a 125kVA grid-tie inverter for high power, high voltage battery testing.

We are also in process of building a microgrid system with high penetration of renewable energy in this building. The components of this microgrid include:

• 100kW solar PV
• 12kW wind turbine
• 114kW Li-Ion storage
• Two 45kW natural gas generators
• active and passive loads
• grid-side static switch

Most of the equipment have been donated by the M-WERC member companies. A block diagram of the microgrid system and a picture of the lab are shown in the following picture.