Download instructions to tenderers

Code
Description
DL SUN-WIND24V
HYBRID SOLAR / WIND ENERGY TRAINER – didactic equipment
The trainer must be composed of two sub‐systems, one for the generation of electric energy from solar photovoltaic energy through a solar panel and
the other for the generation of electric energy from wind energy through a wind turbine.
In this trainer, one of the two inverters, acting as master, must synchronize the frequency of the second inverter, acting as slave, to allow creating a
connection between the two outputs that operate as a single line with double available power.
The Trainer must be composed of the following items.
ROLLING SYSTEM WITH PHOTOVOLTAIC MODULE AND CALIBRATED CELL 2 pcs - This mobile system must incorporate a solar module 85W - 12V, a cell
to measure solar radiation and a sensor for measuring the temperature of the module.
The supporting structure must consist of a cart with wheels on which the panel shall be fixed through a hinge allowing changing the vertical inclination.
Components:
1) Calibrated cell
2) Photovoltaic module
3) Output connectors of a photovoltaic module
4) Connector for calibrated cell and for the temperature sensor
5) Junction box of the photovoltaic module
6) Hinges for the panel inclination
Solar panel parameters:
Maximum Output power 90W ±5%
Open circuit voltage 21,50V
Short circuit current 5,35A
Voltage @ maximum power point 18,40V
Current @ maximum power point 4,90A
Max-System Voltage 600V
Pm Temperature Coefficients –0,12 %/ºC
VOC Temperature Coefficients –0,076 V/ºC
Cell efficiency 18
Number of cells 32
Cell technology monocrystalline
NOCT 47 ±1 °C
SOLAR SIMULATOR 2 pcs - This system must be provided to light the photovoltaic panel inside the classroom or in case of cloudy day; it must be
composed by 4 lamps to uniformly distribute the light over the PV module. It must be possible to control the intensity by the operator locally by a
potentiometer o remotely by a DC signal.
The control panel must include the following elements:
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Automatic-Off-Manual selector
Input for automatic (remote) control
Main switch – differential circuit breaker
Status and error indicators
Intensity regulator, working in manual mode
Main socket with protection fuse is on the bottom of the module.
Technical features:
Maximum Output power 1000W
Maximum current 6A
Operating Voltage 230VAC 50/60Hz
Number of lamps 4
Single lamp power 250W
Intensity regulation technology Microprocessor controlled dimmer
Control signal range 0÷10VDC
AEROGEN - This element of the trainer must be composed by the wind turbine and associated wind sensors, each installed on a standing pole.
Additional components for the motorized version of the aerogenerator shall be:
Stepper Motor
Power supply
Three-blade wind turbine providing 24V, 160W power with the following specifications:
Weight 6 kg
Rotor diameter 1.17 m
Start-up Wind Speed 3.1 m/s
Kilowatt hours/month 38 kWh/month @ 5.4 m/s avg. wind speed
Maximum Wind Speed 177 Km/h
Rated Power 160 watts @ 12.5 m/s wind speed
Certifications CSA (certificate 1954979), CE
Voltage regulation set point (default) 28.2V
Regulator Adjustment Range: 27.2 to 34.0V (approximately)
Tower loads Shaft Thrust 24Kg @ 160 Km/h wind speed (230 N @ 45 m/s)
ANEMOMETER including both wind speed and wind direction sensors. The wind speed sensor must be made up with three cups attached to a rotating
system and must produce 1 impulse for each revolution; meaning that the frequency provided shall be directly proportional to the wind speed.
Sensor Type
-Wind Speed - Wind cups and magnetic switch
-Wind Direction - Wind vane with encoder
Mechanical features
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-Vane and Control Head - UV-resistant
- Wind Cups - UV-resistant
- Dimensions (length × width × height) - (250 mm × 276 mm × 415 mm)
-Weight - 1.332 kg
Output
Serial digital signal, property protocol
STEPPER MOTOR POWER SUPPLY – this item must be a portable unit for the autonomous supply of stepper motors used to power relevant turbines. It
must be designed to meet the needs of motor control for the wind turbine present in relevant trainer providing a the motor control ability from a
mains voltage. The adjustment of the speed of the motor (corresponding to a suitable configuration of voltage and output frequency of the signals on
the phases of the motor) shall be performed manually by the operator or automatically through an external analogue signal.
The output voltage must be galvanically isolated from the mains and safety standards shall be implicitly satisfied.
The output must be protected against overload and short circuits. On the front panel, the module must include the following elements: Power Switch
with Lamp; Control selector: Manual - off – automatic; Analog signal input terminals 0 ÷ 10V; Potentiometer for manual regulation of output power
0÷100%;Reset button: On the rear panel the following elements shall be included: Stepper motor connector; Main socket with fuse; Connector for
programming system. The main socket with fuse and the socket for the connection of the motor must be located on the rear of the module.
This module must be protected by means of electronic fuse and it shall be able to work with following mains:
Nominal Output power 500W
Nominal output current 6.2A
Operating Voltage 90 ~ 264VAC
Frequency range 47~63Hz
Input current 115VAC 1.7A 230VAC 0.75A
Intensity regulation technology microcontroller
Control signal range 0÷10VDC
STEPPER MOTOR used to simulate wind condition, if the trainer will be used indoor or in absence of wind:
Voltage VDC 2.1
AMPS/PHASE 6.36
Resistance / Phase (Ohms)@25°C 0.33±15%
Inductance / Phase (mH) @1KHz 3.0 ± 20%
Holding Torque (Nm) [lb-in] 5.94 [52.57]
Detent Torque (Nm) [lb-in] 0.21 [1.8585]
Step angle (°) ± Step accuracy 1.8 ± 5% (NON-ACCUM)
Back-EMF (V) (300 U/min) 23.15
Rotor Inertia (kg-m2) [Ib-in2] 2.7x10-4 [0.923]
Weight (KG) [lb] 3.4 [7.5]
Temperature rise : max 80°C (motor standstill; for 2 phase energized)
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Ambient temperature -10°C ~ 50°C
Insulation resistance100 MOhm (under normal temperature and humidity)
Insulation class B 130°
Dielectric strength 500VAC for 1 min. (between the motor coils and the motor case)
Ambient humidity max.85% (no condensation)
BATTERY AND AC INVERTER MODULE 2 pcs - module made to generate an island power distribution line, similar to the public local mains. It must
include a battery pack for energy store. The battery pack must be accessible by 2 terminals +/- placed on panel, shown by a battery symbol. It must be
designated to keep the battery bank charged by the electrical converter of energy sources.
Inverter installed in the module shall convert 24VDC to alternating current and must have the following features:
System voltage 24 V
Continuous power 900 VA
Power 30 min. 1100 VA
Power 5 sec. 3000 VA
Power asymmetric 500 VA
Max. efficiency 94 %
Own consumption standby / ON 0,7 W /10 W
DC input side
Battery voltage 21 V … 32 V
Reconnection voltage (LVR) 25 V
Deep discharge protection (LVD) current driven or by Steca Power Tarom
AC output side
Output voltage 230 VAC +/- 10 %
Output frequency 50 Hz
Load detection (standby) adjustable: 2 W ... 50 W
Safety
Safety class II (double insulated)
Electrical protection reverse polarity battery, reverse polarity AC, over voltage, over current, over temperature
Operating conditions
Ambient temperature –20 °C … +50 °C
Fitting and construction
Cable cross-section battery / AC 16 mm2 / 1,5 mm2
Degree of protection IP 20
Dimensions (X x Y x Z) 212 x 395 x 130 mm
Weight 9 kg
Elements on the module:
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Control panel: Power switch for Inverter and instruments; Battery connection: terminals Red+ and Black -; Display for DC Input; Display for AC Output;
Mains output, for connecting loads; RJ45 socket for paralleling; SLAVE IN and SLAVE OUT sockets for RS485 bus; Mains output, for connecting loads and
paralleling.
Battery – 2 pcs 12V 100Ah in series connection
Inverter
Two display must be included in this module providing electrical status information for DC and AC lines, representing the input and output of the
inverter.
The AC instrument must provide the voltage, current and Power supplied by the inverter to the connected load.
The DC instrument must provide the voltage, current and Power consumed by the inverter to provide the requested power at the output.
CHARGE REGULATOR MODULE - Electronic module for charge regulation of the battery with the current supplied by the solar panel. It must include LCD
display in order to provide information on situations; a graphic display must inform the user about all important system data and shall enables
configuration and adjustment of the controller to the specific requirements of the individual system. Numerous clever functions shall allow the user to
adjust the controller to the particular features of the system in question. Thanks to the significantly improved state of charge determination, the
system shall be optimally controlled and the batteries shall be protected. This controller shall be used for system sizes of up to 2400 Wp at two battery
voltage levels (12V, 24V).
In the front panel, the module must include the following elements: Multifunction Display; SLAVE IN and SLAVE OUT sockets for RS485 bus; P.V. panel
input; Battery connection; Output, for connecting DC loads; RJ45 socket for the parallel switch box; Output relay, programmable function; Output relay,
programmable function.
Battery Charger characteristics:
Microcontroller digital accuracy
PWM Charge mode, Multistage charging technology
State of charge
Load disconnection depending on SOC
Temperature compensation
Automatic detection of the voltage
External temperature sensor for temperature compensation
Remote temperature sensor (option)
Modify parameters, through three keys:
- Battery type selection (Sealed battery, Gel battery, Flooded battery)
- Battery AH setting
Common positive grounding or negative grounding on one terminal
Integrated self test
Monthly maintenance charge
Integrated energy meter
Two configurable multifunctional contacts
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The regulator has protection against the following:
Overcharge protection
Deep discharge protection
Reverse polarity protection of module and battery
Reverse polarity protection by internal fuse
Automatic electronic fuse
Short circuit protection of load and module
Open circuit protection without battery
Reverse current to PV protection at night
Over temperature and overload protection
Battery overvoltage shutdown
Technical features of the charge regulator:
System voltage 24 V
Own consumption 30 mA
Boost time 30 minutes
Self-consumption 4mA at night, 10mA at charging
Temp. compensation -30mV/12V
DC input side
Module current 45 A
Max. input voltage 60 VDC
DC output side
Load current 45 A
programmable
End of charge voltage 28.2 V
Boost charge voltage 28.8 V
Equalization charge 30 V
Reconnection voltage (SOC / LVR) > 50 % / 25 V
Deep discharge protection (SOC / LVD) < 30 % / 23.4 V
Operating conditions
Ambient temperature -10 °C … +60 °C
Equipment
Set battery type liquid electrolyte; solid electrolyte configurable via menu.
PARALLEL SWITCH BOX – it must have one output (230V or 115V, depending on the connected inverters) on which load can be connected. The
maximum available power shall depend on the size and the number of inverter.
The parallel switch box also must allow communication with charge controllers. This must allow the PV system to be controlled depending on SOC
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Description of connections:
Master data input, RJ45
Master input, 230 V / 115 V
Slave 2 input, 230 V / 115 V
Slave 1 data input, RJ45
Consumer output 2, 230 V / 115 V
Communication for charge controller, 2 x RJ45
LOAD AT MAINS VOLTAGE MODULE 2 pcs – This module must incorporate a 35W halogen lamp and a 5W LED lamp, working to the mains voltage. Each
lamp must incorporate an ON/OFF control independent switch.
HIGH POWER LOAD AT 24VDC MODULE 2 pcs - This module must incorporate 2x20W halogen lamp, working at 24V. The module must incorporate an
ON/OFF control switch.
LOW POWER LOAD AT 24VDC MODULE 2 pcs - This module must incorporate 2x7W LED lamp, working at 24V. The module must incorporate an
ON/OFF control switch.
VARIABLE RHEOSTAT MODULE - The variable logarithmic rheostat must allow loading the photovoltaic panel in order to detect the characteristic
voltage-current curve. Rheostat range 0 ÷ 90 Ω. Maximum current 6A.
SOLAR MEASURING INSTRUMENTS MODULE - The module must be made to perform the measurements of a photovoltaic system. It must include a
series of instruments; input terminals +/- shall be placed on the left of each instrument and the output terminals must be on the right. It must provide
DC, AC and environmental measurements. All instruments must show readings using the automatic decimal point position, starting from 1/1000 up to
the maximum value of each measurement. Communication terminals must be located on the right low side of the panel; two RS485
connectors, one male and one female, must be available for the connection with the PC running the acquisition software and/or with other modules in
a chain configuration.
Instruments must support MODBUS RTU protocol over RS485 interface, used by the software application, available separately, to perform a guided
analysis of the electrical characteristics on the modules of the trainer.
It must be supplied by the Battery module; it also must have a switch to disconnect the module when not in use, leaving the experiment connections
intact.
The module must include 4 multifunction displays:
No.2 for DC Measurements and displaying data for Voltage, Power and Current:
DC voltage ± 65V
DC current ± 20A
Dc power autoscale
No. 1 display for AC measurement:
AC voltage 0-512V
AC current ±20A
Power Meter
No. 1 display showing data for:
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Solar irradiance meter 0÷1000 W/m2
Thermometer
0÷400°C
Module connections and indicators:
Connector for the calibrated cell and for the temperature sensor.
Power supply connectors of the module.
Voltage must be between 10V and 35V.
Power switch, for the module ignition.
Connectors for DC signals measuring: voltage, current and power.
Connectors for AC signals measuring.
Communication port , for the SW application interface.
Multifunction display
WIND MEASURING INSTRUMENTS MODULE
The module must be made to perform the measurements of a wind energy system. It must include a series of instruments; input terminals +/- shall be
placed on the left of each instrument and the output terminals shall be on the right. It must provide DC, AC and environmental measurements.
All instruments must show readings using the automatic decimal point position, starting from 1/1000 up to the maximum value of each measurement.
Communication terminals must be located on the right low side of the panel; two RS485 connectors, one male and one female, shall be available for
the connection with the PC running the acquisition software and/or with other modules in a chain configuration.
Instruments support MODBUS RTU protocol over RS485 interface, used by the software application, available separately, to perform a guided analysis
of the electrical characteristics on the modules of the trainer.
It must be supplied by the Battery module; it also must have a switch to disconnect the module when not in use, leaving the experiment connections
intact.
The module must include 4 multifunction displays:
No.2 for DC Measurements and displaying data for Voltage, Power and Current:
DC voltage ± 65V
DC current ± 20A
Dc power autoscale
No. 1 display for AC measurement:
AC voltage 0-512V
AC current ±20A
Power Meter
Wind speed meter
0 ÷ 45 m/s
Wind direction meter 0 ÷ 359°
Module connections and indicators:
Connector for the calibrated cell and for the temperature sensor.
Power supply connectors of the module.
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Voltage must be between 10V and 35V.
Power switch, for the module ignition.
Connectors for DC signals measuring: voltage, current and power.
Connectors for AC signals measuring.
Communication port , for the SW application interface.
Multifunction display
The trainer must include a three level vertical frame for the fitting of the modules.
Complete with a set of connecting cables and with an experiment manual.
It must be possible to perform the following exercises:
Identification of the components
Location of the photovoltaic module
Measurement of the solar irradiation
Measurement of the voltage of the photovoltaic module with no load
Measurement of the short circuit current of the photovoltaic module
Current voltage graph of the photovoltaic module
Measurement of v and i of the photovoltaic module with overload
Regulation and charging of the battery
Direct current solar installation
Alternating current installation
Identification of the components
Installing and testing wind turbine
Installing and testing anemometer
Connecting wind turbine and anemometer to the trainer
Activating the braking action
Regulating and charging battery
Direct current wind installation
Alternating current installation: standby function investigation
Combined installation low voltage parallel connected, ac separated
Combined installation low voltage separated, ac parallel connected
Combined installation low voltage and ac parallel connected
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