Off-grid PV power generation system mainly by the PV modules, brackets, controllers, inverters, batteries and power distribution system components. System electrical design, the main consideration components, solar controller, solar inverter , battery selection and calculation. Before the design, the preparatory work need some time. You need to understand the user installation site of the climatic conditions, load type and power; day and night electricity consumption. Of course, need to know the user's budget and economic situation. In off grid PV power generation system, electricity is depend on weather. However,weather changed frequently.
- 6月 08 週四 201709:40
Off-grid PV power generation system
- 6月 08 週四 201709:35
RFID Solution for Tracking and Inventory
Business process re-engineering is gaining popularity nowadays due to the budgets constraints imposed by the economic crisis. It’s easy to notice an increasing usage of Radio Frequency Identification (RFID) and near field communication (NFC) in several domains. For example, reported the use of RFID technology in museums and galleries for tracking artworks and other expensive pieces while moved from one art gallery to another. More than 3000 universities in China have installed RFID tag readers, for student identification cards, and contactless library applications. Hospitals also started using UHF RFID tags to track and manage assets, particularly expensive or critical items of equipment.
Take the case of warehousing management system(WMS) for discussion, structure the activities into three main processes.
1. Consumable items management:
- 6月 06 週二 201710:59
Points to Make Low-Power UHF Handheld RFID Reader
UHF RFID readers can be divided into fixed RFID readers and handheld readers. Handheld readers achieved a large number of applications for its portable, and easy to use in shift data collection.
It is difficult to design handheld UHF RFID reader, because it covers embedded computer application, microwave and antenna, radio frequency electronic circuit, wireless communications and signal processing, low-power control and many other technical fields.
- 6月 05 週一 201710:10
Classification of Photovoltaic Controllers
PV controllers can be divided into five types: parallel, tandem, pulse width modulation, intelligent and maximum power tracking.
- 5月 27 週六 201709:17
RFID Technology Speeds Logistics Up to 6 Times than Before
Recently, a news from Tianjin attracts people’s attention, “As the first enterprise who uses RFID technology in air-logistics, Sinotrans Air Transportation Development Co., Ltd. can handle over 200 orders per day with only 4 workers and 4 forklifts. With RFID readers installed on the forklift, workers can read the RFID tags on goods and complete the whole process quickly without getting off. The daily in&out cargo weight reaches 300 tons and the operation efficiency has been greatly improved than before.” The manager of this company also added that the work done within a week now just needs 24 hours.
- 5月 26 週五 201708:52
Where is the service of household photovoltaic reflected?
1.Storage, packaging and transport services to ensure that the product zero defects in front of customers
Most people will pay attention to the system itself, this process is rarely focus on the system from the factory to the roof, small before have compared the brand manufacturers and a motley crew of packaging and transportation process, also found that this link there are too many fatal problems.
Most people will pay attention to the system itself, this process is rarely focus on the system from the factory to the roof, small before have compared the brand manufacturers and a motley crew of packaging and transportation process, also found that this link there are too many fatal problems.
Greenpeace says China's waste of renewable energy is enough to power Beijing for a whole year Greenpeace, despite its commitment to correct the problem of waste renewable energy, is still rising sharply in the country's solar and wind power industries last year, Greenpeace said on Wednesday.
- 5月 18 週四 201709:08
PV Modules Capacity and Inverter Capacity Ratio
PV modules capacity and inverter capacity ratio called capacity ratio. Reasonable capacity design need to be combined with the specific project situation. The main effective factors including irradiance, system loss, inverter efficiency, inverter life, inverter voltage range, modules installation angle and so on.
- 5月 15 週一 201714:31
The characteristics of solar energy
Solar energy as a kind of green energy, has its advantages and disadvantages.The following simple introduction for everyone under the characteristics of the solar energy.
Advantages common:
- 5月 11 週四 201711:52
Performance Evaluation
According to the operating characteristics of the independent inverter in PVS, the following performance evaluation can be performed on the inverter for independent PVS.
(1) The reliability: From the previous PVS, the inverter is one of the main factors affecting the reliability of the system. Due to the independent model inverter general work in remote areas, once appear, problem maintenance is not very convenient, so the primary request of independent model inverter is a reliable safety must be run.
(1) The reliability: From the previous PVS, the inverter is one of the main factors affecting the reliability of the system. Due to the independent model inverter general work in remote areas, once appear, problem maintenance is not very convenient, so the primary request of independent model inverter is a reliable safety must be run.
