The Prospect of PV Inverter

_{Principle and System Composition of PV Power Generation}

1.After absorbing a photon of a certain energy, a solar cell generates an electron-hole pair in a semiconductor P-N junction, which is called a "photogenerative carrier". The electric polarity of the two is opposite, with the electron carrying a negative charge and the hole carrying a positive charge.

2.The photogenerated carriers of opposite electrical polarity are separated by the electrostatic field generated by the P-N junction of the semiconductor.

3.Electrons and holes are respectively collected by the positive and negative electrodes of the solar cell, and a current is generated after the circuit is switched on to obtain electric energy

The Composition of PV Power Generation System

PV Industry Chain

PV Composition - Inverter

 Inverter：Whether it is from generating electricity to using it, or from generating electricity

to storing electricity to using it, it all involves this important equipment. It can not only realize AC- DC power conversion, but also realize power control and off-grid switching. It can maintain the

stability of the power grid, especially to avoid the impact of the instability of new energy on the

power grid.

Solar panels last 20 years and inverters are

replaced every five years. The development characteristics of inverter:

1. Technical barriers

2. Core equipment of photovoltaic industry chain

3. Stable competition pattern

Centralized PV inverter

 Distributed PV inverte

The Development and Prospect of PV Inverter

According to the statistics of the national power industry released by the National Energy Administration from January to August on September 21, China's installed solar power capacity is about 350 million kw, and the cumulative installed scale of solar power exceeds wind power.

The newly installed PV capacity in August was 6.74GW, up 64.0% year on year and down 1.6% month on month. From January to August, 44.47GW of photovoltaic installed capacity was accumulated, with a year-on-year growth of 101.7%.

According to the China Photovoltaic Industry Association, during the 2019-2021 period, China's annual newly installed PV capacity is 30.1GW, 48.2GW and 54.88GW respectively. In 2021, the newly installed PV capacity in China was 54.88GW, a year-on-year growth of 13.9%

Driven by the "carbon neutral" goals of countries around the world and the clean energy transition, global average new PV installations are expected to exceed 220GW per year during 2021-2025. By 2030, the global PV annual installed capacity is conservatively estimated to exceed 300GW. According to the World Energy Outlook 2020 released by the International Energy Agency (IEA), the transformation of the global energy structure is accelerating. It is expected that the global electricity demand from renewable energy will increase by two thirds between 2020 and 2030, accounting for about 80% of the increase in global electricity demand. By 2030 renewable energy will provide nearly 40% of the world's electricity supply