Before the book is divided into six chapters, chapter four describes the basic knowledge of solar photovoltaic power generation, such as photovoltaic principle, principle and classification of solar battery, connected to the grid and off-grid power generation, and also introduces the important components photovoltaic battery module, controller ( Special inverter) And the type of battery, design as a reference for readers. Chapter 5 describes the control method of maximum power point tracking control are introduced, several alternatives available to researchers selected topic. Chapter 6 introduces the application of photovoltaic power generation system, solar PV air conditioner and two typical applications of solar vehicle, and circuit diagram is given, and computer control software and the experimental data curve, informative.
solar photovoltaic webex: oil and gas giant bp ( 英国石油公司(BP) On Thursday, On February 14) Said in its annual 'BP energy outlook', by 2040, renewable energy will become the world's fastest growing energy, than any in the history of a fuel faster penetration energy systems, to be in 2040 will become the world's largest source of energy.
in 2040, renewable energy is expected to account for around two-thirds of global output growth, in the power industry of the world's share will increase from the current 10% to about 30%. In the popularization of renewable energy, the eu will continue to be in the leading position among the regions. BP, says the share of renewable energy electricity market will jump to more than 50%.
on the other hand, BP said the coal's share of the world will have fallen sharply, to 2040 renewable energy will replace it, become the main energy source of the power industry.
the company said, the prospect of the first half of 2040 time, oil demand will rise, but the rising speed will be much lower than in the past, after peaking in the 30 s of this century.
the global liquid fuel ( Including crude oil and condensate oil, liquefied natural gas (LNG), and other liquid fuels) Demand is expected to increase to 10 million barrels per day, the century 30 s steady at about 1. 0. 8 billion barrels per day.
although BP oil demand is expected to peak in the 30 s, but the company says, however, by 2040 oil will continue to play an important role in the global energy system. In addition, & other; A lot of investment is needed to have enough supply to meet the needs of 2040, & throughout; BP said. The company added, & other; In all situations, all need trillions of dollars in oil investment & throughout; 。
compared with last year's outlook, BP's biggest correction on renewable energy and energy consumption in China. BP will renewable energy consumption forecast to rise 9%, at the same time will be in China's energy consumption forecast was revised down by 7%, and other Reflects China is adapt to a more sustainable growth model & throughout; 。
the BP group chief economist SpencerDale comment on outlook 2040 said: & other; Renewable energy and gas account for the growth of the primary energy most. In our continuous development in the process of transformation, 85% of new energy is low carbon. ”
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according to the set consulting set the state of new energy, new energy research center network ( EnergyTrend) The latest data, the mainland polycrystalline silicon material for an average of RMB 72 in January 2019. 4 / KG, more than the average price of RMB 75 in December 2018. 5 / KG to reduce the 4. 11%; Single crystal materials in January for an average of RMB 79. 2 / KG, and last month, compared to RMB 81 / KG down 2. 22%. The China of polycrystalline silicon material 1 month for an average of US $8. In December 953 / KG, more than the average US $9. 39 / KG reduced 4. 65%