EVSE Project at SMUD

1. Karun Kumar, E.I.T
R&D Engineering Intern
Mechanical and Electrical Engineering
California State University, Sacramento - Junior
Energy Research and Development Department
EVSE (Electric Vehicle Supply
Equipment) Planning and
Testing
• Developed a test plan and
failure criteria for testing
multiple different EVSEs.
• Tested multiple EVSEs to
ensure safe operation and
detect possible faults.
• Tested different forms of power
sharing methods (rotational
and distributive) to optimize
fleet charging and demand
charge.
0
10
20
30
40
50
60
11:29:46 11:31:12 11:32:38 11:34:05 11:35:31 11:36:58 11:38:24 11:39:50 11:41:17
Current(A)
Time
Maximum Current Draw (1 Second Interval)
Channel 1 Channel 2
122
122.2
122.4
122.6
122.8
123
123.2
123.4
123.6
11:29:46 11:31:12 11:32:38 11:34:05 11:35:31 11:36:58 11:38:24 11:39:50 11:41:17
Voltage(V)
Time
Voltage Readings (1 Second Interval)
Channel 1 Channel 2
0
500
1000
1500
2000
2500
3000
3500
4000
4500
11:29:46 11:31:12 11:32:38 11:34:05 11:35:31 11:36:58 11:38:24 11:39:50 11:41:17
Load(W)
Time
Load Shape
Channel 1 Channel 2
Experience
The experience I gained through is
opportunity was extremely valuable
towards my career development. I
learned a lot about EVSE
infrastructure and communications
protocol and also about SMUD.
Manager: Lupe Jimenez