PowerTracker

· Intelligent Control· Efficient Maintenance· Durable for Long Life Span

PowerTrackerEmpower your solar farm!

Powerway Renewable Energy Co.,LtdHK: Room 708,7/F.,Building 12W Phase 3,Hong Kong Science Park,Shatin N.T.Hong KongMainland of China: A-15 Floor, Foshan New & Hi-tech zone Technology Industrial Park, No.70 Guxin Road, Chancheng District, Foshan City, Guangdong ProvinceWebsite: www.solar-powertracker.comEurope：Europe@solar-powertracker.comAmerica：American@solar-powertracker.comJapan：Japan@solar-powertracker.comPakistan：Pakistan@solar-powertracker.comSouth Africa：Southafrica@solar-powertracker.comMiddle East & North Africa：MENA@solar-powertracker.com

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Yield Guaranteed!

Powerway Renewable Energy Co.,Ltd

performance

warranty

PowerTracker

* Powerway's Terms and Conditio

ns applied

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powertracker

What is PowerTracker

Automatic O&M

Simplified Digitized

Key Advantages of PowerTracker

PowerTracker

25% - 50% fewer foundations

5 X faster cleaning & maintenance

3 X faster installation speed

10%-25% + more yieldWireless SCADA and closed-loop control for maximum accuracy and reliability

Less structural materials, less stress and more profit

Per 100MW installed:

· 15,000 Fewer Pier foundation

· 900 Tons Less steel or aluminum

· 2¢/W Material & installation cost savings

If allows, use standard “Guard-Rails” Foundation:

Steel W-Beam or C Profile or H Profile

Unblocked Rows for Extreme O&M Efficient Service vehicles can drive through rows Minimum risk of damage the solar modules

High System Availability is A Guarantee to Higher Yield

55 kg(111.3 lbs)

PowerTracker, intensively integrated with Huawei Inverter of big data, cloud and remote control features and technology, for your smart PV plant.

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Smart O&MHigher Yield Safe & Reliable

With string monitoring, no preventive maintenance for string inspection

Real-time alerts

Simplespare parts

Replace easily, 2 people in 30 minutes

String status and alarm

Customer O&M center

Current sensorVoltage sensor

RS485

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组串监测

功率/发电量表格图

PV Array PlantPower Line Communication Network 4G LTE Wireless Network

PLC & 4G Wireless Building A Digitized Network

AC Combiner

AC Combiner

Transformer

PLC CCO

SmartLoggerCommunication Box

PLC

Baseband Station

PV Array Wireless Unit

PV Array Wireless Unit

PV Array Wireless Unit

PV Array Wireless Unit

Local Management

Drone

Smart PV Terminal

RS485

RS485

PowerTracker

PowerTrackerPLC

RS485

View of array sections

Power/output histogram

Sub array view String supervision

Power/output table diagram

PowerTracker Control Centre Fault Detection

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Tracker power output contrast between low latitude and high latitude areas

Smart PV Controller

Smart PV Controller

Smart PV Controller

Smart PV Controller

China-Hohhot City 47 °N

Australia-Learmonth 22°S

Tilt Single Axis

Tilt Single Axis

2011.6 2474.5 2558.3

1 23.01% 27.18%

188.8 168.0 175.0 151.4 136.0 124.7 138.1 166.3 179.4 196.8 192.4 194.7

257.0 215.5 211.9 175.9 149.0 131.5 147.1 191.4 217.5 253.3 256.8 267.6

235.0 210.3 220.3 195.8 175.1 157.1 173.2 220.1 232.5 252.4 243.3 243.2

050

100150200250300

Tilt Single Axis

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10°

10° 10°

10°

PowerTracker N->S Slope Terrain Adaptability

Flat Terrain

Wavy Slope Terrain

Sharp slope Terrain

Flat Terrain

Wavy Slope Terrain

Sharp slope Terrain

PowerTracker E-> W Slope Terrain Adaptability

Intelligent PowerTrackerAdvantages

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Accurate sun tracking guaranteed 10%-25% more yield

Optimized back tracking for shade avoidance

The Tracker is auto-switched to Level Patter mode as soon as wind load reaches 20m/s, and this mode can withhold up to the max load of 55m/s

Excellent anti-vibration effect

Detect automatic leveling mode under the circumstance of strong wind

Automatic leveling mode at night

Automatic snow removing function

Automatic cleaning function

Intensively integrated with big data, cloud and remote control features and technology; For Your smart PV Plant

All PV plants globally, can be centralizedly managed over the Internet

Intelligent self-inspection to ensure the health status of the equipment

Provides cleaning suggestions to optimize the benefits of panels’cleaning

With automatic reminders and alarms, problems can be fast solved

Patrol and real time maintenance ensures precise monitoring to every single module

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SpecificationSystem Powerlink PowerMax PowerFit

Tracking Style Single-axis Horizontal

Capacity(DC) 100kW to 500kW 100kW to 500kW 20kW

Max system voltage 1000V/1500V

Tracking Range of Motion ±45°

Extra ouput(v.s. fixed tilt) 10% to 25% （Powerway's Terms and Conditions applied）

Mechanical DataDrive mode Torque Tube Pull-rod self-driven

Material H.D.G.+ Aluminum

Max rows 24 24

Module per row Max 64 modules

E-W slope <10° <5° No Restriction

N-S slope <10°

Mechanical size subject to module dimension and quantity

Module supported Mono/Crystalline/Thin Film

Module Layout Portrait/Landscape

Ground clearance >400mm

Foundation Rampost/Concrete

Max wind speed 40m/s or customized

Stow wind speed <20m/s

Time to stow position <5 minutes

Electrical Data

Power voltage 3W+PE 380/480VACL+N+PE 110/220VAC

3W+PE 380/480VACL+N+PE 110/220VAC 24VDC

Power frequency 50/60HZ 50/60HZ

Nominal power 1.5kW 1.5kW 300W

Motor type AC AC DC

Control system PLC

Control algorithm astronomical algorithms + tilt sensor close loop

Tracking accuracy ±2° or customizedAutomatic leveling mode

at night Yes

Back tracking Yes

Automatic rain cleaning Yes

Automatic snow cleaning Yes

Working Temperature -25° - 55°

IP protection IP65

Daily energy consumption <1kW.h/day

Communication interface RS485/Modbus

PowerLink

PowerFit

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There is only one motor for each table;

Best Land utilization;

Less power consumption on the motor, less than 1kwh per day.

Strong Terrain AdaptabilityNo installation issues for slopes less than 10°

Most flexible for any Array LayoutBest Land Utilization

Sole drive for each table to reduce mass drives dysfunction problem;

Best Land utilization;

No torque tube between rows, easier to clean modules；

Less power consumption on the motor, less than 1kwh per day.

PowerMax

Simple drive system. Only 1 drive and control system for 1 array. Less potential failure point. Easy for maintenance;

Low power consumption, Less than 1 KWh power consumption per day;

Economical design of using centralized drive control for multi-arrays.

PowerTracker Datasheet

Cost-effectiveCentralized drive system to improve maintenance efficiency

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How Slewing Drives Isolate Reverse Load------PowerTracker System

For each row of solar arrays, the load

terminal relies on the slewing drive to

transfer power from the motor. The

slewing drive itself does not produce

power however; it just carries it.

A slewing drive is a worm gear

mechanism that uses a horizontal

screw to turn a perpendicular axis gear.

Once its speed ratio reaches a certain

value, it has a special feature: reverse

self-locking. This means when the

motor pushes the load, it obeys at full

speed; but when the load pushes the

motor, it remains firm as a rock. This

powerful feature allows the slewing

drive to turn in only one direction; it

cannot reverse.

With changing weather and strong

winds, the live load on the modules

increases, putting reverse pressure on

the slewing drive. If this pressure

exceeds the power from the motor, the

slewing drive may reverse and damage

the motor. In such a case, the reverse

self-locking feature is crucial, because

it ensures that rotary power can be

transferred only from the motor to the

load and not the other way around. The

self-locking feature prevents damage

to the motor from reverse load, and

stops possible damage at the slewing

drive.

Reverse Self-Locking:

Small Motor Drives Large Array--------

Power Tracker’s Magic Gearbox

Compared to traditional,

fixed PV structures, Trackers

follow the movement of the

sun, tracking it for maximum

irradiance so the panels

generate more electricity. A

single or multiple power

source is what makes the PV

tracker rotate.

The motor itself takes up

only a tiny space in the

overall solar plant, but it

drives and provides power

for the entire solar array, like

a small horse pulling a large

cart. In fact, the engine is less

than 2 KW, 1/40 the size of a

car engine, yet it powers a

solar array much larger than

a car.

How does such a small power source drive a

large, heavy PV module array? The secret is:

1、 Module balance, taking advantage of

gravity

Based on the rotation axis，the module

basically balances itself by using gravity. Taking

advantage of the existing gravitational force, very

little extra force is needed to drive the tracker to

rotate; just enough energy to overcome a little

rotation friction and unbalance the existing

external forces、such as wind load.

2、 Gearbox

Solar panels produce electricity during the

daytime as the sun rises from the east and falls to

the west. During this 6~12 hour cycle, the angle of

the module changes within a 180 degree range,

so the module tracking rotation speed is slow and

imperceptible, like the hour hand on a clock.

Force is inversely proportional to velocity, so to

increase force, we slow speed. For this the

tracker engine uses a functional gearbox. The

gearbox has a very small nominal torque, so it

slows down rotation speed, resulting in a boost in

torque. The gearbox slows the speed to allow the

tracker to follow the sun’s radiation accurately,

and this perfect match provides more energy

from the same solar array, which benefits

everyone.

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Multiple Limited Protection System for Solar Tracking Systems

In the actual operation of a solar tracking system, certain problems can cause

the system to get out of control, and the motor may rotate the racking system

without restriction, resulting in damage. Problems can include a faulty control

module, faulty position switch, electromagnetic interference or unreliable fault

tolerance in the control module. Such faults can cause the electrical wires to

inter-twist, damage the motor or crush the solar module. In order to avoid these

situations, it is very important to have a multiple limited protection system in the

solar tracking system.

The protection system consists primarily of a circuit protection system and a

mechanical protection system:

The circuit protection system comprises a tilt sensor and control module

arranged on the solar tracker. The tilt sensor is used to transfer the angle signal to

the control module. The control module is used to confirm that the solar tracker is

rotating within a determined angle range, so it can control the driving system and

rotate or brake to maintain the proper range.

The mechanical protection system

comprises a travel limit switch arranged on the

support, located at the maximum angle that

the tracking system should turn. The travel

limit switch and the actuator are connected in

series to the power circuit, so if the tracking

system tries to turn too far, the switch will stop

the system from moving past the maximum

angle.

The control system provides duplicate

protection—of both the circuit and mechanical

protection systems—to set a limitation on the

angle range. It can also stop the motor from

rotating when a stall occurs. In this way, the

protection system guarantees that the

tracking system operates reliably and safely.

circuit protection system

mechanical protection system

Based on the concepts of digital operations and simplified management, intelligent

photovoltaic power plants can be operated and maintained from anywhere in the world.

This management by remote control uses a combination of technologies: intelligent data

acquisition, high-speed communications and cloud computing.

Powerway‘s intelligent PV system can accurately detect the various groups of string

information and monitor the status of key components to see and manage power plants

remotely. On-site plants communicate with remote management through intelligent mobile

terminal applications, web apps, desktop apps, and client apps with expanded interfaces.

Intelligent inverters transform the traditional power converter into a kind of brain—an

intelligent, thinking controller. Intelligent inverters result in higher efficiency and increased

power output. At the same time, by using PLC Communication they make the system

simpler. This approach eliminates the need for a DC conflux box, DC power distribution

cabinet and inverter room/container.

By using the most advanced communications technology to build a digital information

highway, a high-speed internet network is formed, which includes the power plant

information, data and video. Eventually all of the plant's information can be under

centralized and unified management through the global Internet.

Intelligent Data, Remote Control—PowerTracker System

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Damper is a hydraulic device that

absorbs and damps shock impulses

by converting the kinetic energy of the

shock into another form of energy

which is then dissipated. It has been

widely used in the industries of

aerospace, aviation, military, firearms, automobile, etc.

Powerway’s picks the Two-Way Damper for its Power Tracker to damp and

absorb impulses coming from both linear and compressed directions. The

damp resistance can be low when motion speed is very low; but as soon as the

velocity reaches the threshold value, the mechanism will be set off and closed

out as a rigid support to perform its offsetting and damping functions.

The Damper used in our PowerTracker is mostly made out of Austenitic

stainless steel for its characteristics of high corrosion resistance, compact

structure, minimal space requirement for installation, and more desirable

impact absorbability. It can react to heavy weight with minimal

motion-response time. It is hinged at both ends with ball-bearings allowing

+/-6 degree range of motion, which enhances its adjustability and flexibility for

on-site installation. It uses special hydraulic fluid and sealant for its optimum

performance stability and long sealing life.

The PV tracking system can be affected by undesirable vibrations (in most

cases caused by heavy wind) for the operating stability of its machine and

equipment, which in turn shortens its lifespan. The Two-Way Damper is

designed to overcome such problem. In the normal working condition, the

Damper is set in a retired mode without generating resistance to allow the

Power Tracker moving at the normally slow pace; but when nature releases its

force causing excessive vibration to the Tracker, the Damper will wake up to

exercise its protecting power by absorbing and damping the impetus.

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Ordinary coupling serves as an intermediary that transmits power from one

end to the other end. However, even flexible coupling has a limited maximum

angle of compensation—generally less than 5 degrees—which means that

coaxial installation is required. Ordinary coupling also requires relatively high

positioning accuracy over the two connected ends.

Cross universal coupling has a much greater angle of compensation over the

two connected ends—up to 10~30 degrees. As a result, the layout flexibility of

the two ends is greatly enhanced.

Photovoltaic power plants are generally located in sparsely populated areas

in open air. To reduce the cost of land leveling, developers generally build PV

plants on relatively flat land. However, it is difficult to have a completely level

site, so it is necessary to adapt to irregularities on the land by adjusting the PV

stand during construction. In such cases, universal coupling has unique

advantages.

The component arrays in each row are designed according to engineering

calculations. However, during the actual construction it might be difficult to pile

to the precise position required by those calculations. For example, if the

construction encounters rocks or other obstacles, using universal coupling

greatly reduces the accuracy required for relative positioning between rows,

and significantly improves construction flexibility.

aphical ConstraintsUniversal Coupling Overcomes Topographical Constraints— PowerTracker System

The Small Guy does the Big Job – Damper in Our PowerTracker

Cross universal coupling has a much greater angle of compensation over the two connected ends—up to 45 degrees. As a result, the layout flexibility of the two ends is greatly enhanced.