PPLC-PV: A Pulse Power Line Communicationfor Series-Connected PV Monitoring
#20

#40

#60

#80

#04

#24

#44

#64

#03

#23

#43

#63

#02

#22

#42

#62

#01

#21

#41

#61

DC

AC

Hideya Ochiai, Ph.D.
Hiroyuki Ikegami
The University of Tokyo, JAPANBackground: Vulnerability of PV System
30V

600V

10A

30V 30V 30V 30V

10A

10A

10A

Power
Generation

24.0kW(600V x 40A)
DC
AC

20 serial x 4 parallel

Background: Vulnerability of PV System
33V

600V

10A

10A

Power
Generation

18.6kW(600V x 31A)
ERROR

33V0V

33V 33V

1A

10A

23%↓DCACERROR may shadow or invisible internal disruption.

Background: Vulnerability of PV System
33V

600V

33V

0V

33V 33V

10A
10A
GeneralRequirements
1A

10A✓Detect errors as fast as possible✓Identify the PV module(s) to befurther investigated
ERROR

PowerGeneration

18.6kW(600V x 31A)

23%↓
DC
AC

Monitoring of PV Modules
LTE+Cloud(not our focus)

PV System
ERROR!!

#20

#40

#60

#80

#04

#24

#44

#64

How to collect ?

#03

#23

#43

#63

PPLC-PV

#02

#22

#42

#62

#01

#21

#41

#61

@Module#02, #44• No additional wire• No radio communication• Use “power line” forcommunicationDCACProposal : PPLC-PV
A Pulse PLC for Series-Connected PVs#20+#19+-II

0-

#02

AC

1

Transmitter+

CTTo Grid

1+

-#01

Current PulseSignals

DCReceiver

1t

The information of• Module ID• Output Voltage• Temperature
is embedded.

To Cloud

IoT/M2M
Gateway

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。

Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りたい方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:Experiment(to study the features of PPLC-PV)• PV Module
SY-M12W-12(SUNYOOO Solar Limited)

Pmax: 17.4V 0.69A (12W)Open Voltage: 21.8V
Short Current: 0.73A

× 20• Load (as Inverter)• Receiver CT

CTL-10-CLS (u-RD)
Resister: 0 – 600Ω
Input Capacitance: 190uF N : 1 = 3000 : 1with 30kΩ resister

PV Module Configurations for Testing(1) 20 x 1(2) 10 x 2(3) 5 x 4

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

顔を合わせて内容をご説明したいため、スライドの一部をぼかしています。詳細を知りた
い方は、落合までコンタクトをお願いします。
Some slides are not visible. Please contact me
because I’d like to make a face-to-face
discussion on this.
Contact:

Data Transmission Example:
Decoding data at the receiver(Inductor Direct Transmitter’s case)Preamble Module ID

Data(e.g., Voltage, Temperature)

CRC16

Not only single pulse, PPLC-PV can send somebasic data frames !!

Conclusion• PV module-level monitoring is required.
• to detect ERRORs caused by shadow or invisible internal faults.
• to recover the failed PV system as fast as possible.

• A Pulse PLC for series-connected PV monitoring:• Proposed simple schematics that makes strong pulse signals• Experiment• Inductor direct transmitter is the best.
• It can send some basic data frames.

• Others• Several updates after the paper submission.
• Calling for Research Collaborators for further research on this.