2Renewable Energy, Energy Storage, and Smart Interfacing Power Converters
2.1 Renewable‐based Generation
The significantly growing power generation from renewables is driven by global carbon reduction policies and the maturing power conversion techniques. Further adoption of renewables in today's electric grids is vital to tackle climate change. This is particularly the case for solar and wind energy generation, which is forecasted to support more than half of the global power generation by 2050. In Figure 2.1, the global electricity generation mix, historical and forecast to 2050, is shown [1].
This section introduces photovoltaic (PV) power systems and wind power systems in detail.
2.1.1 Photovoltaic (PV) Power Systems
PV devices, or solar cells, were developed in 1954 at Bell Labs. PV power generation technology experienced a significant boost in 1974 when the first oil crisis occurred. In recent years, PV power penetration into power systems continues its rapid increase worldwide, serving as an important renewable energy source for a promising low‐carbon society. Since 2000, the global PV system installed capacity has grown nearly 400‐times, and it had reached about 633.7 GW in 2019. In 2019, China, the US, and India were the top three PV system installers by 30.1, 13.3, and 8.9 GW installed capacity. Even though the installation growth has been significant up to today, PV power generation still only accounted for 2.6% of global power generation as of 2019 [2].
The major ...
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