Kỹ thuật điện Trần Lê

Tran Le introduces Unified All-in-One Solar Energy Storage P12-E14

Trần Đình Quân — Sat, 26 Mar 2022 02:36:55 +0000

Compact all-in-one design, IP54 protected cable for indoor and outdoor installation. Stand up, easy to install. Lithium storage battery and smart BMS. Durable high performance, efficiency up to 98%, flexible application.

It is a product designed and manufactured by Tran Le. Bringing many choices for customers in terms of power reserve, power autonomy, no worry about power failure.

Tran Le introduces Unified All-in-One Solar Energy Storage P5-E14

Trần Đình Quân — Sat, 19 Mar 2022 06:56:48 +0000

It is a product designed and manufactured by Tran Le. Bringing many choices for customers in terms of power reserve, power autonomy, no worry about power failure.

Grid-tie solar power solutions

quantriweb — Sat, 30 Oct 2021 10:00:26 +0000

The schematic diagram of the grid-tied solar power system

What is grid-tied solar power?

Grid-Tied PV System, also known as “On-Grid” solar power system, is a solar power generation system that is directly connected and connected to the grid. at the connection point, the generated electric energy is mixed into the public power system and jointly supplied to the loads for use, when the electrical energy generated from the system is less than the demand of the load, a part of the energy is offset from the public grid and vice versa when the demand for electricity is less than the amount of electricity generated, the excess energy of the system will be “flowed” into the grid. In this solution, the public grid system plays the role of both providing energy, storing and regulating energy, so that the solar power system is always controlled for maximum power generation without the need for electricity. must self-regulate according to the load demand to make full use of this clean energy source, besides, there is no need to calculate and balance the power consumption of the load when designing and installing the solar power system as well. as there is no need to invest in a battery / storage battery system to “back-up” and regulate energy.

System Operation:

Solar panels are connected to each other in arrays and installed to best capture energy from the Sun’s radiation and convert it into electricity in the form of direct current, this current will be Inverter (Inverter) modulates into alternating current and automatically adjusts electrical parameters such as voltage, frequency, phase angle to satisfy the conditions of harmonization and connection to the grid at the connection point, this inverter is called Grid-tied solar inverter.

Benefits of the solution:

The grid-tied solar power solution solves many disadvantages for solar energy, which is an intermittent energy source and cannot control the source but only the receiving system. Utilizing the electrical system as a storage, conditioning and co-supply system for the load will allow maximum solar energy collection and bring many benefits.

Unlimited load, make the most of:

The system allows maximum solar energy collection and does not need to calculate the load balance when investing in the system and is not required to limit the consumption capacity of the load.
Flexible investment:

The capacity can be invested in accordance with the conditions of the installation area and can be divided into many investment stages in accordance with the investment ability.
System with high stability, long service life:

The main equipment in the system such as panels, inverters are manufactured with durability and design life of over 20 years and do not use battery/storage batteries which are low-durability devices.
Low investment cost:

Because there is no need to invest in a battery/battery system, this solution significantly reduces investment costs compared to a standalone system (Off-Grid).
Low operating and maintenance costs:

The main units are designed to be maintenance-free or low-maintenance and operate fully automatically without the need for operator along with allowing remote monitoring via PC and mobile devices, so the system has almost no operating costs.

Cons of the solution:

The grid-tied solar power solution brings many benefits, but there are also disadvantages that investors need to consider when deciding to invest.

Không vận hành được khi mất điện:

Because the system is connected to the public grid, when the power grid loses power, the system will automatically separate from the power system, which means that if there is a power outage to the public grid, the load will also lose power according to the surface. This is during sunny times and of course not in areas without electricity.
Must be licensed:

The public power system is like a “buffer” so the connection to the grid must be approved by the Electricity and the State management agency and the system must meet the standards as well as the power quality according to the regulations. determined. In Vietnam, the connection of the power system to the grid has been allowed under the Prime Minister’s Decision No. 11/2017/QD-TTg and specified in the Circular No. 16/2017/TT-BCT of the Ministry of Industry and Trade. with the active support of EVN.
System Limits:

The use of the public electricity system as a “buffer” system (storage and conditioning), so the total capacity of solar energy in a country or region depends on the “conditioning” capacity of the system. in that country or region. In Vietnam, according to the power plan VII, the total capacity for renewable electricity including Wind power, Solar power and Biomass power is 850MW by 2020 and expanded by 4,000MW by 2030. However, this should be done. interested in solar power generation plants with large capacity up to tens of MW.

The main devices in the system:

Solar panels:

Solar panels are installed to maximize energy from solar radiation

Solar panels are linked into arrays, installed to absorb maximum energy from solar radiation and convert it into electricity. Solar panels account for most of the investment costs and are decisive in terms of energy conversion efficiency.
Solar inverter:

The solar inverter is the heart of the system.

Solar inverter is likened to the heart of the system, determines the stable operation of the system and determines the quality of power produced, so this is the most important device of the system.
Intermediate and protection systems:

Electrical cabinet with DC connection to link solar panels and protect the system

This system consists of conductors and equipment for connection, switching, measurement and protection installed inside the electrical cabinet.
Two-way galvanometer:

Nhân viên Điện Lực lắp đặt điện kế hai chiều tại 1 dự án

Two-way galvanometer (Net-metering) is often supplied and installed by Electricity agencies to measure power in two directions, in the direction of electricity consumption and in the opposite direction, to generate electricity to the grid. The measurement of these two power flows serves as the basis for calculating electricity bills according to the “offsetting” mechanism.

REFU Elektronik GmbH

quantriweb — Sat, 30 Oct 2021 09:51:33 +0000

REFUSol-Solar Inverter Solution from Germany

REFUSol is a brand of solar inverters belonging to REFU Elektronik GmbH company established in 1965 The company specializes in developing renewable energy products and is a member of PRETTL Group – Germany’s leading technology group specializing in the production of renewable energy products. electronic components and parts for the world’s leading car manufacturers such as BMW, Audi, Mer, etc..

REFUSol with nearly 60 years of research and development, continuous improvement, has launched a Solar Inverter product with very high quality, stability and reliability.

REFUSol product line with capacity from 8KW to 100KW is very suitable for Hoa Grid Solar Power projects with medium and large capacity.

TRAN LE ELECTRICAL ENGINEERING CO., LTD is the official importer and distributor of REFUSol Solar Inverters in Vietnam.

Franklin Control System

quantriweb — Sat, 30 Oct 2021 09:51:20 +0000

Franklin Control System – Dedicated control and inverter solution for water and industrial pumping.

Franklin Control System is a leading provider of motor control solutions for the HVAC, water pump and other industrial applications.

Products include industrial inverters, starter control cabinets, soft starters, related components and accessories.

Franklin Control System has strived for continuous growth and improvement through professional organization, innovation, consistency and impeccable service.

Founded in 2003 under the Cerus Industrial brand, Franklin Control System has grown rapidly and its products have been distributed globally through trusted distributors and resellers.

Tran Le Electrical Engineering Co., Ltd. is an authorized distributor of Cerus Industrial-Franklin Control System in Vietnam since 2015.

Sunpower

quantriweb — Sat, 30 Oct 2021 09:51:06 +0000

Founded in 1985, Sunpower has become a global leader in solar energy development with its high-performance solar panels, Sunpower solar panels providing outstanding power and With long-term stability, Sunpower is the first choice for solar power projects globally.

Global headquarters in Silicon Valley since 1985
Total power generation > 18,000,000 MWh
Globally diversified portfolio at the forefront of residential, commercial and factory solar markets
World’s most efficient solar panel with SunPower® Maxeon cell technology
More than 750 patents in the field of solar technology.

Since 2017 Tran Le Electrical Engineering Co., Ltd has cooperated with Sunpower to use Sunpower panels for its projects and from 2019 Tran Le officially became an authorized distributor of Sunpower products in the Vietnamese market. male

S-Energy – South Korea

quantriweb — Sat, 30 Oct 2021 09:51:03 +0000

S-Energy – South Korea

Started in 1994 as the solar business of SAMSUNG ELECTRONIC, in 2001 S-Energy separated from SAMSUNG and began its groundbreaking development. Over 25 years of continuous development S-Energy is one of Korea’s oldest and leading solar energy companies. In the third quarter of 2014 S-Energy made its mark as the 2nd company in the world after First Solar (according to Bloomberg New Energy Finance).

The main product of S-Energy is Solar Panels with top quality and meeting the highest standards of the world. Solar panels S-Energy have been selected to be installed in solar power plant projects in countries with very high quality requirements in the US, Japan, Germany, South Korea..etc. In addition to high-performance solar panels, S-Energy also develops a breakthrough product,BIPV (Build-Intergated PV)a solution that combines solar energy production on glass walls. facade of the building.

Besides manufacturing solar panels, S-Energy is also the leading EPC, O&M, and solar system rental company in Korea and has been successful with many projects in Korea. , Japan, USA, and Chile.In 2018 Tran Le Electrical Engineering Co., Ltd was officially the import and distribution partner of Solar Panels S-Energy and a partner in the field of EPC, O&M Solar Energy in Vietnam.

IBC N-Type technology on Sunpower Maxeon panels

quantriweb — Sat, 30 Oct 2021 09:50:57 +0000

Patented Sunpower Maxeon IBC N-Type Technology

Sunpower Maxeon X series solar panels

IBC . base plate technology

Common panels usually have 4 to 6 busbar bands and many small electrical lines (fingerprints) on the cell surface, these structures block part of the light absorbed into the cell. Technology IBC, abbreviation from English is “Interdigitated Back Contact”, there are many current guides (over 30 conductors) interwoven together on the underside of the Cell, the top of the battery cell is completely removed. The obstacles caused by the busbar and the tiny “fingerprint” electrical path, make the battery cell look better, more efficient and more durable.

Sunpower used a full sheet high-grade copper alloy IBC layer on Maxeon battery cells, this technological solution has been patented. With a conductive panel like a highly reflective metal mirror layer, which reflects any light radiation that passes through the Cell layer back into the Cell, significantly improving performance. This Sunpower IBC layer also helps strengthen the Cell to help it withstand stress, can be bent, not brittle like other conventional panels.

The back of the Sunpower Maxeon battery cell

Sunpower’s IBC technology makes Cell more resistant to stress and more durable

Công nghệ cell pin N-Type

A solar cell is a silicon crystalline wafer coated with various chemicals to generate electricity. The basic difference between P-type and N-type battery cells is in the chemical coating on the cell surface, resulting in a different number of electrons. With the P-Type cell, the chemical that coats the silicon wafer is boron, which has fewer electrons than silicon, so the cell has a positive charge, while the N-Type chemical that coats the wafer is phosphorus, which carries more electrons than silicon, so it charges. minus.

The first battery cell successfully manufactured by Bell Laboratories in 1954 was the N-Type back contact type. However, at that time, solar was mainly used for aerospace science and P-type battery cells were better able to withstand space radiation, so it was gradually developed and gradually replaced. N-type solar cells and to this day, when the demand for solar applications is more and more in civil and industrial power generation, P-Type cells with available advantages have gradually invaded and accounted for 80% of the total capacity. bridge.

In ground-based residential and industrial power generation applications, the N-type semiconductor has a superior performance advantage simply because it contains more charge carriers and less attenuation because of the absence of the boron- oxygen, a reaction that significantly degrades the performance of P-type panels when exposed to the sun

Nowadays, the production cost of N-Type Cells is getting cheaper and cheaper because the production technology of N-Type cells has become much more efficient and the increasing requirements for the efficiency and durability of solar panels make it easier to manufacture. Cell N-Type began to be produced more and more and in the future will replace P-Type.

ICB N-Type battery panels for the highest performance today.

The pinnacle in solar panel manufacturing technology today is the combination of IBC panel technology on N-Type panels. Sunpower and LG are two pioneers in Cell IBC N-Type monocrystalline silicon technology with 2 typical battery lines

Sunpower : Maxeon series, maximum efficiency 22.7%
LG: NeON R, maximum efficiency 21.7%

Although the production cost of IBC N-Type panels is expensive, in return, the panel efficiency is very high, the degradation over time is very low, providing high performance with good durability and stability, such as: Sunpower Maxeon battery panels commit to a 25-year to 92% performance warranty, up to 25-year product quality warranty.

Highlights of Sunpower’s IBC N-Type battery cell

Shingled Cell technology on Sunpower P series panels

quantriweb — Sat, 30 Oct 2021 09:50:42 +0000

Công nghệ tấm pin shingled cell là gì.

shingled cell is a new solar panel manufacturing technology, using small sized cells cut out of normal square cells by laser cutting technology, each normal square cell can be cut into 5 to 6 small cells. The small cells are now glued together horizontally or vertically with a special glue to form a strip of cells called shingled cells. The overlapping of the small cells together eliminates the busbar connecting the cells together like on a conventional panel. This unique design allows the cells to cover more of the surface area of the panel and eliminates the covering of the guide rails on the cell surface increasing panel efficiency, another benefit is that these shingled cells are connected parallel to each other and each sequence operates independently, greatly reducing the performance loss caused by the shading effect.

Shining cell technology on Sunpower performance series (P series) panels

Sunpower Performance Series panels combine Sunpower ‘s more than 30 years of experience in material technology and manufacturing expertise to produce panels that excel in terms of performance, performance, reliability and aesthetics compared to conventional panels.

Since 2015, the innovative shingled cell Sunpower Performace Series sunpower have been satisfying the high reliability and durability needs of energy developers

More than 1.5GW of Sunpower P series panels have been deployed to date and own a portfolio of many international patents and application patents to ensure a technological advantage. Sunpower believes that Sunbpower Performance Series panels will create a competitive advantage in the market.

The prominence on Sunpower performance series (P series) panels

A groundbreaking shingled cell design that reinvents conventional battery cell technology for added performance and enhanced efficiency

Using conductive adhesive space technology to glue the overlapping cells helps shingled cells better withstand daily temperature changes.
Enhanced cell connectivity creates flexible paths that minimize the impact of cracks on panel performance.
Sunpower’s proprietary technology encapsulation glue minimizes panel degradation under environmental influences.

Watch an introductory video about Shining cells technology on Sunpower Performance Series panels

Who should invest in rooftop solar power?

quantriweb — Sat, 30 Oct 2021 09:48:23 +0000

Rooftop solar power system

In recent years, the beginning of rooftop solar power systems has begun to receive more and more attention from Vietnamese people and businesses because the increasingly cheaper equipment prices have caught the investment ability of Vietnamese people in the near future. when the electricity purchase price is constantly increasing, besides the government’s policies on encouraging investment and development of solar energy take effect and put into practice as Decision No. 11/2017/QD-TTg of the Prime Minister Government and Circular No. 16/2017/TT-BCT of the Ministry of Industry and Trade.

So, who should invest in rooftop solar power? How effective is the investment in solar energy? What are the difficulties, obstacles and risks when investing in solar energy? To answer these questions, experts, consultants, suppliers and installers need to analyze each load and give accurate answers. However, the preliminary analysis can be as follows for each group of loads according to EVN’s current electricity price list as follows:

Business load group:

This group includes loads such as Offices, Trade Centers, Office buildings for lease, Restaurants, Hotels, Resorts ..etc. The average electricity purchase price ranges from VND 2,700/kWh to VND 3,000/kWh, even with many loads having higher electricity purchase prices depending on the connection voltage level and the routing of the load. This is the group of loads that buy electricity with the highest price and the characteristics of electricity use are also very suitable for solar power, so considering the purchase price of electricity and setting the point of electricity use, this is the group that benefits the most if Solar investment, payback period from 4 to 6 years. The biggest obstacle of this group is that most of them are high-rise buildings, the roof area is often much smaller than the usable area, so investing in solar energy can only reduce a little compared to the demand for electricity.
Production load group:

This group includes the loads that are factories, enterprises, and manufacturing companies. The average electricity purchase price is from 1,500 VND/Kwh to 2,000 VND/KWh, although it is a group that buys electricity at a low price, the demand for electricity is large, the roof is wide, the construction is easy and the investment in solar energy system is Due to the large capacity, the investment rate is low, so the payback period of this load group is about 7 to 9 years depending on the project. Unlike some manufacturing industries, electricity costs account for a large proportion of production costs, if investing in solar energy, investors will save costs and increase the competitiveness of businesses in the market.
Group of daily loads:

This group of loads buys electricity according to the ladder electricity price, the more you use it, the higher the average cost of buying electricity, the average household in Ho Chi Minh City is about 2000 VND/Kwh to 2,500 VND/Kwh or fixed unit price with a cost of 2,271VND/kWh. Thus, with this load group, the installation of solar energy is also significantly effective, the payback period is about 5 to 7 years, however, there are still many obstacles for this group of loads when investing in electricity. solar energy such as: (1) The electricity usage characteristics of this load group are often concentrated at night and rarely used during the day while the current electricity price compensation mechanism is not really applied; (2) This group of loads mostly uses single-phase electricity and according to regulations can only install up to 3KWp Solar energy, so it can only meet part of the demand; (3) The roof is quite complicated leading to high investment costs and many roofs are obscured by adjacent houses..etc.

Other added values when investing in solar energy.

In addition to evaluating investment efficiency in terms of finance, payback period. Investors also gain additional values through the installation of a solar power system such as using clean energy, demonstrating their contribution to energy saving and environmental protection, and enhancing the image of investors. business with friends, partners and customers.

Besides, the investment and use of clean energy is also highly appreciated in the case that enterprises want to obtain the certification of energy-saving and environmentally friendly design such as LEED or Lotus for their buildings and factories. LEED or Lotus certification is one of the investment goals of many enterprises producing goods for export to markets such as the US, Japan and European countries.

Group of experts Tran Le

Kỹ thuật điện Trần Lê

Tran Le introduces Unified All-in-One Solar Energy Storage P12-E14

Tran Le introduces Unified All-in-One Solar Energy Storage P5-E14

Grid-tie solar power solutions

What is grid-tied solar power?

System Operation:

Benefits of the solution:

Unlimited load, make the most of:

Flexible investment:

System with high stability, long service life:

Low investment cost:

Low operating and maintenance costs:

Cons of the solution:

Không vận hành được khi mất điện:

Must be licensed:

System Limits:

The main devices in the system:

Solar panels:

Solar inverter:

Intermediate and protection systems:

Two-way galvanometer:

REFU Elektronik GmbH

Franklin Control System

Franklin Control System – Dedicated control and inverter solution for water and industrial pumping.

Sunpower

S-Energy – South Korea

S-Energy – South Korea

IBC N-Type technology on Sunpower Maxeon panels

Patented Sunpower Maxeon IBC N-Type Technology

IBC . base plate technology

Công nghệ cell pin N-Type

ICB N-Type battery panels for the highest performance today.

Highlights of Sunpower’s IBC N-Type battery cell

Shingled Cell technology on Sunpower P series panels

Công nghệ tấm pin shingled cell là gì.

Shining cell technology on Sunpower performance series (P series) panels

The prominence on Sunpower performance series (P series) panels

Watch an introductory video about Shining cells technology on Sunpower Performance Series panels

Who should invest in rooftop solar power?

Business load group:

Production load group:

Group of daily loads:

Other added values ​​when investing in solar energy.

Other added values when investing in solar energy.