Huafeng Xiao - Transformerless Photovoltaic Grid-Connected Inverters

This series comprises advanced textbooks, research monographs, professional books, and reference works covering different aspects of power electronics, such as Variable Frequency Power Supply, DC Power Supply, Magnetic Technology, New Energy Power Conversion, Electromagnetic Compatibility as well as Wireless Power Transfer Technology and Equipment. The series features leading Chinese scholars and researchers and publishes authored books as well as edited compilations. It aims to provide critical reviews of important subjects in the field, publish new discoveries and significant progress that has been made in development of applications and the advancement of principles, theories and designs, and report cutting-edge research and relevant technologies. The CPSS Power Electronics series has an editorial board with members from the China Power Supply Society and a consulting editor from Springer.

Readership: Research scientists in universities, research institutions and the industry, graduate students, and senior undergraduates.

More information about this series at http://www.springer.com/series/15422

This Springer imprint is published by the registered company Springer Nature Singapore Pte Ltd.

The registered company address is: 152 Beach Road, #21-01/04 Gateway East, Singapore 189721, Singapore

Human beings experienced energy utilization styles from the age of firewood to coal, oil, gas, and electricity. While the total energy consumption is increasing constantly, the proportions of different energy are also changing predicted by the Joint Research Centre of European Commission in 2004 []. Every transition of the energy is accompanied by a huge leap in productivity, which has greatly promoted the development of economy and society.

At the same time, with the increasing consumption of energy, especially for fossil energy, the restriction of energy on economic and social development and the damage to the environment are becoming significantly apparent, such as urban smoke caused by soot pollution, automobile exhaust and industrial exhaust pollution, acid rain, the ozone layer damaged, soil loss, mining earthquake, marine pollution, and nuclear pollution, so far. Scientific observations show that the concentration of CO2 in atmosphere has increased from 280 ppmv before the industrial revolution to the current 379 ppmv, and the global average temperature has also increased by 0.74 C in the past century.