ORBITAL – Profibus interfaced WIND TURBINE control modules

The Orbital IEC system is a high performance wind turbine controller based on standard industrial

components. Key words are open technology, independence, simplicity, flexibility and nearly

unlimited possibilities for expansion.

Orbital designed various specific modules, focusing onto a standard PLC with integrated Profibus

interface for communicating with the applied modules.

This controller, an integration of standard components with new developed wind turbine specific

control modules, can be installed in any standard wind turbine without an appreciable re-design of

the existing hardware concept of the nacelle- and bottom construction. The small size design of the

IEC modules also permit retrofit applications.

To achieve independence, the Orbital designed high-integrated wind turbine specific control

modules can at any time be replaced by commercial standard modules.

There is no longer a demand for placing all control units traditionally in the control cabinet, the

IEC Profibus opens the possibility to place control at any location where control is suitable, e.g.

both in the bottom cabinet and in the nacelle.

Traditional multi cabling from bottom to top can be replaced by ProfiBus, a 2-wired RS485 based

communication line or on request, fiber optics. This saves cobber and expenses.

The wind turbine control algorithms are no longer a secret of the provider. By using the PLC

related open programming language now the customer at any time has the freedom to create his

own software and adjust or modify the entire control philosophy – without entering a proceeding

technical dialogue with the manufacturer of the hardware.

To improve the functionality and performance of the wind turbine, easily additional control

modules can be integrated into the existing system and implemented into the software.

Profibus DP

���� ProfiBus DP interface ���� Programmable parameter values ���� Minimize number of control modules ���� Compact DIN-rail snap-on mounting ���� Minimize PLC program code ���� Simple wiring and configuration ���� Computed measurements ���� Low cost, easy to install

Scada system Standard PLC

ORBITAL A/S Phone +45 97 35 24 22 E-mail orbital@orbital.dk

Trykkerivej 5 DK 6900 Skjern Fax +45 97 35 32 85 Website www.orbital.dk

OrbiGrd Grid monitoring module

OrbiMix Timer/counter/temperature module

OrbiGrd

Monitoring a 3-phased grid.

- 3 Voltage inputs.

- 3 Current inputs.

- 2 Analogue outputs. (U/I selectable)

- 2 Digital inputs.

- 2 Relay outputs.

Measurement:

- 3-phased Voltage/Current [V/A]

- Active Power [kW]

- Reactive Power [kVAR]

- Grid frequency [Hz]

- Cos (phi), Power Factor

- Excess indication of measured values

ProfiBus interface

OrbiMix

Monitoring of temperatures and high-

speed counter / timer signals.

- 8 (16) Pt100 sensors. (3-wired)

- 6 Hi speed counter / timer.

- 2 Digital inputs.

- 2 Relay outputs.

Measurements:

- Temperature [°C/°F]

- Revolution [RPM]

- Wind speed [mps/mph]

- Frequency [Hz]

- Excess indication of measured values

- Yaw control

ProfiBus interface

OrbiThy Thyristor control module

OrbiVib Vibration monitoring module

OrbiThy 3-phased dual polarity thyristor trigger unit

for soft motor start and soft generators

connection.

- 3 Thyristor trigger outputs.

- 2 Digital inputs.

- 2 Relay outputs.

- Available as “Stand Alone” module

Measurements:

- Grid frequency [Hz]

- Phase sequence

- Thyristor trigger angle [°]

- Excess indication of measured values

ProfiBus interface

OrbiVib

Vibration / RPM guard.

Monitoring vibration bands, temperatures

and counter / timer signals

Configurable as Stand Alone system.

Available as Lite version without Pt100

inputs

- 1 External dual axis accelerometer

- 8 Pt100 sensors. (3-wired)

- 2 Digital Inputs (encoder / timer).

- 2 Relay outputs.

Measurement:

- 8 fixed LF vibration bands [Hz]

- 1 programmable vibration band [Hz]

- Temperatures [°C/°F]

- Revolution [RPM]

- CW/CCW indication

- Excess indication of measured values ProfiBus interface

OrbiCap

Solid State Power Factor Controller

Thyristor control of 4 Capacitor Banks

OrbiCap provides dynamic control of the

reactive power and improves the grid quality

by transient free switching of the capacitors.

OrbiCap can work automatically in a Profibus

environment or manually as a Stand Alone

System by using the 4 Digital Control Inputs.

Security Klixon

Control:

- 4 Digital Inputs

- 4 Digital Security Klixon Inputs

- Available with Profibus DP interface

12

56

K1

G1

K2G2

TT70N2400

K

A

K

A

L3L2L1

Capacitor Bank 1Capacitor Bank 2

Capacitor Bank 3Capacitor Bank 4

12

56

K1G1

K2G2

TT70N2400

K

A

K

A

L3 L2 L1

12

56

K1G1

K2G2

TT70N2400

K

A

K

A

PL12

PL3PL6

PL9PL11

PL2PL5

PL8PL10

PL1PL4

PL7

Klix

on

fee

db

ack

OrbiCap

M21

2

3

4

5

M21

2

3

4

5

Dig

ital in

pu

ts

PL 5

6 o

5 o

43

2 o

1 o

PL4

6 o5 o

4

3

2 o

1 o

PL 3

6 o5 o

4

3

2 o

1 o

PL 2

6 o5 o

4

3

2 o

1 o

PL 1

6 o5 o

4

3

2 o

1 o

PL 6

6 o

5 o

4

32 o

1 o

J1

2 o

1 o

PL12

6 o

5 o

4

32 o

1 o

PL11

6 o

5 o

43

2 o

1 o

PL10

6 o5 o

4

3

2 o

1 o

PL 9

6 o5 o

4

3

2 o

1 o

PL 8

6 o5 o

4

3

2 o

1 o

PL 7

6 o5 o

4

3

2 o

1 o

N

+24VDC 0 VDC

M11

2

3

Po

we

r

Thyr. Bank 4

Thyr. Bank 3

Thyr. Bank 2

Thyr. Bank 1

ON Bank 4

ON Bank 3

ON Bank 2

ON Bank 1

Temperature Feedback

Klixon

Bank control

Example

OrbiVib 2 Vibration monitoring of up to 8 individual programmable bands

OrbiCap Solid State Power Factor Control

OrbiVib 2

Vibration / RPM guard / Datalogger

Monitoring vibration bands and counter /

timer signals

Configurable as Stand Alone system.

- 1 External dual axis accelerometer

- 2 Digital Inputs (revolutions / encoder).

- 2 Relay outputs.

- USB interface

Measurement: - 8 programmable vibration bands [Hz]

- Revolution measurement [RPM]

- CW/CCW indication (encoder mode)

- Excess indication of measured values

- Real Time Clock

- Data Log Buffer

- Trace buffer for condition monitoring

ProfiBus interface

Bottom / Top Connections via ProfiBus

Meteorological Equipment

Anemometer

- PNP digital output

- Short circuit protected

- Brass / Stainless Steel Construction

- Start wind > 1.0 m/s

- 10 m cable

- 0.75 kg

- Accuracy < 4%

- Calibration on request

Wind Vane

- PNP digital output

- “Black and White” detection

- “In Wind” indication

- Short circuit protected

- Brass / Stainless Steel Construction

- Start wind > 1.5 m/s

- 10 m cable

Wind Direction sensor

- PNP digital output

- 64 sectors

- Short circuit protected

- 1.35 Kg

- Brass/Stainless steel construction

- Start wind: > 1.5 m/s

- Resolution 5.6°

- Gray Code