SegenSolar Small Off-Grid Sales Training

Cinco and EP Solar

1

• Cinco Product Overview

• Company Profile

• Product Compatibility

• Limitations

• Competitive Product Analysis

• Key USP’s

• Local Support / RMA process

• Basic principles of off grid PV systems

• Description of main components

OVERVIEW CINCO

RANGE OVERVIEW CINCO

Key USP’s

• Small and easy to install• Can do small off grid systems in easy few steps• Easy to select a charge controller for these panels• Can be used with MPPT or PWM charge controllers• Very popular for small base stations and where small off grid systems is needed

PRODUCT COMPATIBILITY

• Most panels can be used with PWM

charge controllers

• Can also be used with MPPT charge

controllers

• For small to medium off grid systems

• Radio base stations and can be used

in communication industry for off grid

power

• The larger panels can be used with

grid tie inverters

CINCO Limitations & Benefits

• Limitations• Small range and little to choose from• Not tier 1 panels• For small off grid systems only

• Benefits• Small panels easy install• Easy handling• Ideal for camping • Can work with small and large charge controllers ( system size depended)• Strong robust frame

Competitive Product Analysis

• Compare well with other manufacturers• See below the specs on other companies selling the same panels• This comparison is made on a typical 100W / 36 cell solar panel

CENTSYS RENEWSYS CINCO

VOC 22V 21..92V 22.38V

VMP 18V 17.92 18V

IMP 5.56A 5.59A 5.56A

ISC 6.06A 5.95A 5.95A

EFFICIENCY 14.90% 15.35% 14.80%

36 Cell Panels

• Looking at main points of 36 cell panel- HOW TO IDENTIFY• Open circuit volts• 10W to 50W• Specs is about the same as all other panels in this same category.

72 Cell Panels

• Looking at main points of 72 cell panel-HOW TO IDENTIFY

• Open circuit volts ( REGULATOR)

CINCO Solar - RMA

My Product has a fault

Contact Segen Tech Support who will resolve remotely

If cannot resolve remotely, Segen will authorise item back to Segen for diagnosis/repair On arrival Segen make

fault report and diagnose

replacement or credit offered for the customer and this is case by case

decision from manufacturer

Unit offered back to customer – no credit

Client needs to supply installation info and problem

they got with panels

Unit faulty?

YES

NO

SegenSolar Bulk Pack Available

Cinco 10W 36 Cell 50 pack Cinco 30W 36 Cell 50 PackCinco 50W 36 Cell 38 Pack Cinco 80W 36 Cell 34 PackCinco 100W 36 Cell 32 PackCinco 120W 36 Cell 32 PackCinco 160W 36 Cell 28 PackCinco 180W 72 Cell 28 PackCinco 200W 72 Cell 28 Pack

80W+ panels with 30mm frame thickness are supported on the design tool and compatible with Renusol

Basic Principles of Off-grid PV Systems

Overview EPSOLAR

• Range Overview

• Company Profile

• Product Compatibility

• Limitations

• Competitive Product Analysis

• Key USP’s

• Local Support / RMA process

PWM Range Overview• PWM CHARGE CONTROLLERS• 5A / 10A/ 20A/ 30A

• Using PWM ( Pulse Width Modulation) technology and is less efficient than MPPT charge controllers• Usually has 2 stage regulation • 1. As stage 1 a safe max volts is applied till battery is full• 2. then drops the volts lower to trickle charge the battery

MPPT Range Overview• MPPT CHARGE CONTROLLERS• 10A/20A/30A/40A/50A/60A/80A/100A

• MPPT ( maximum Power Point Tracking) is more efficient and is widely used• It basically convert excess voltage into amperage• Has a wide DC input voltage range• Any solar panels can be used as long as the total volts of series string of panels does not get acceded• High voltage input from panels, meaning less losses; volt drop and higher efficiency• Thinner DC cable can by used for the DC volts is higher at less current

Range Overview

• INVERTER RANGE• OUTPUT AC POWER (W) : 350W/500W/1000W/1500W/2000W

Company Profile

Beijing Epsolar Technology Co., Ltd. was established in March 2007 with more than 30 million RMB registered capital. We are a new and high-tech enterprise which was specialized in power products researching, manufacturing, and marketing.

We provide products including solar charge controllers, off-grid inverter, LED driver and special power units etc., as well as design and supply relevant solar application systems. The company has passed the ISO9001: 2008, and products have passed CGC-SOLAR, CE, ROSH, FCC, and ETL certificate, as well as other domestic and international authoritative certification and a number of patents. The products have been extensively applied and highly appraised in a number of major projects at home and abroad. And sell in more than 120 foreign countries and regions.

In July 2014, we established Shenzhen branch as our production base. In August 2014, we were listed in NATIONAL EQUITIES EXCHANGE AND QUOTATIONS and launched into capital market successfully.

Product Compatibility

Limitations Drawbacks

• Regulator does not have any communication with batteries• More for SLA batteries• Some can be used with Lithium batteries, however not proper control and no

communication with battery BMS or BMU• Can be paralleled but no comms between regulators for current sharing

Competitive Product Analysis

• EP solar is very close to Victron which is the leader in the market.• It is better priced than other regulators in the market place.• EP can be used with Lithium batteries, however not proper control and no communication with battery BMS or BMU-in

this case rather go for Victron.• Can be paralleled but no comms between regulators for current sharing this is good off grid solution for large off grid

where high capacity SLA 2volt batteries is being used. • Also outperform Outback that is still the same product and did not change over the time.

Victron EP solar outback

battery volts 12/24/48 12/24/36/48 12/24/48

rated current 85A 80 80

nominal pwer at 48volt 4900W 4000 4000

max pv open circiut volts 250 200 150

max efficiency 99% 98.5% 97.5%

proper Litium setup use yes no no

Key UPS’s

• Cost effective products comparing to other manufactures• Can do small off grid systems in easy few steps• Inverters is all pure sinewave • PWM and MPPT charge controllers to choose from• Easy panel selection with this range of regulators

https://www.youtube.com/watch?v=wJTZZQMO6YM

Why pure sign wave inverters?

EP Solar - RMA

My Product has a fault

Contact Segen Tech Support who will resolve

remotely

If cannot resolve remotely, Segen will authorise item back to Segen

for diagnosis/repair On arrival Segen make fault report and

diagnose

replacement or credit offered for the customer and this is case by case decision from

manufacturer

Unit offered back to customer – no credit

Client needs to give full details on site and installation and fault

he experience

Unit faulty?

YES

NO

EPSOLAR

Design ToolIn Design Tool >>Off grid Supply >> Direct DC Charging

( Is Offered with Omnipower Batteries)

>>Photovoltaic >> EPSolar >> MPPT Charge Controller

>>Photovoltaic >> EPSolar >>PWM Charge Controller

>>Photovoltaic >> EPSolar >>Battery Inverter

SegenSolar PackagesNot Available Yet

Controller

Controller

Solar charge controller is one of the core parts of photovoltaic power system. It is a kind of special power electronic device with automatic

operation and management, which can manage and monitor PV, battery , load, other components and fully compatible their characteristics.

Difference between a PWM and MPPT

Controller Type：https://www.youtube.com/watch?v=K7NWpxxEB9o

General

Controller

Streetlight

controller

Lithium battery

controller

PWMGeneral

Controller

Streetlight

controller

Lithium battery

controller

MPPT

The controller has a dozen voltage control parameters to ensure the system normal operation during charging and

discharging (left).:

Over Voltage (Reconnect) Voltage：Controller shuts down the charging function in time when battery failures and

voltage exceeds its value; Output is restored after reached the recovery point.

Charging Limit Voltage：Controller needs to compensate for charge voltage when the temperature is cool, which

is the maximum after compensation.

Equalize, Boost, Float Voltage：At different stages of the target charge voltage point.

Boost Reconnect Charging Voltage：After controller enters float charge and the voltage drops to this point, it will

re-enter the boost charge.

Under Voltage Warning (Reconnect) Voltage：This voltage point is used to prompt the user for battery runs low,

need to charging in time.

Low Voltage (Reconnect) Voltage：It means that the battery power is running out when battery voltage lower

than disconnect voltage and the controller disconnects the load output in time; when the voltage reaches recovery

point, the load will turn on again.

Discharging Limit Voltage：The battery activity is not strong when temperature is cool, so the controller need to

compensation for low voltage disconnect voltage and this point is the minimum value after compensation.

Charging AlgorithmThe controller has a 3 stages battery charging algorithm : Bulk Charging, Constant

Charging and Float Charging

Bulk Charging：In this stage, the controller operates in constant current mode,

delivering its maximum current to the batteries.

Constant Charging：When the battery voltage reaches the constant voltage set point,

the controller will start to operate in constant charging mode. This process is no longer

max power charging, and the charging current will drop gradually. The Constant Charging

has 2 stages, equalize and boost. These two stages are not carried out constantly in a full

charge process. The controller will equalize the battery on 28th each month. The constant

charging period is 2 hours, the max is 3 hours.

Float Charging：After the Constant voltage stage, the controller will reduce charging

current to Float Voltage set point. The fully charged battery status is maintained via

continuous small current charge at this stage.

PWM & MPPT Controller

Based on battery work voltage of 10.8V to 14.5V (48V system*4), the PV voltage is far higher than the battery work voltage, to ensure constant charging correctly. Also the PV max power point voltage is higher than battery voltage.

With PWM controller: The PV terminal voltage is closed to battery voltage, around 1V higher.

With MPPT controller: The specific electrical circuit structure of MPPT controller will enhance the PV terminal voltage to 17V normally, thus increase the efficiency of PV charging.

The left curve shows that MPPT controller can enhance PV charging efficiency 10% to 30% compared to PWM controllers. (The green shadow is increased power.)

PWM & MPPT Controller

PWM charging diagram MPPT charging diagram

PWM & MPPT Controller

0

10

20

30

40

50

60

70

80

0 2 4 6 8 10 12 14

PWM & MPPT PV terminal voltage

PWM充电 MPPT充电

Lithium Battery

PWM charging: The voltage is a square wave, the high one is close to the battery and the low one is 0V.

MPPT charging: Due to the circuit structure, the voltage is stabilized around the MPP or other operating point and have a smaller voltage ripple.

Inverter

• Inverter change DC volts into AC volts which is being needed by everyday appliances• DC volt models is 12V/ 24V/ 48V• Input protection for low and high voltage• Output protection – overload and short circuit

Inverter

Inverter

Inverter converts battery DC power to 220V / 110V, which for the AC load using. In solar PV system, it depends on the actual application for

whether need to use inverter or not . Inverter is divided into frequency inverter and high frequency inverter ,according to the circuit structure

Frequency inverter： Low-voltage DC to Low voltage AC first, and then boost it to High voltage AC through a large transformer.

High-frequency inverter： Low-voltage DC to high frequency, density and energy DC first, and then invert it to AC.

50Hz

24KHz

Inverter output waveform

Inverter

Inverter connection diagram

Cautions：

1. The inverter must be connected to the battery, do not connect with the controller load terminal

2. The inverter selection, if the load is resistive type(such as incandescent), generally 1.5 times; if the capacitive or inductive type generally 3-5 times.

3. Regarding AC load opening, High-power open first, and the low-power second.

Inverter

Frequency and High Frequency Inverter Comparison

Small Power density

Big size ,Heavy weight

Wide Volt input

Low efficiency

High reliability

Frequency

Big Power density

Small size,Light weight

Narrow Volt input

High efficiency

Low reliability

High -Frequency