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The high-power grid-connected converters play a vital role in modern power system, realizing the conversion and transmission of electrical energy, and determining its safety, stability and efficiency. This book explores the advanced control strategies of high-power grid-connected converter to satisfy the high-power requirements in practical applications. Special attention is given to grid-connected converter modules in parallel operation to overcome the challenges of non-ideal power grid, power switches faults, and circulating current. Through the advanced control strategies presented in this book, the power capacity of grid-connected converter is flexibly increased with high-reliability and...
This book investigates the control and optimization of grid-tied power converters, with a special attention attached to pulse width modulation, which determines the size and cost of power converters as well as switching harmonics. Through the methods introduced in this book, multiple grid-tied power converters safely operate and coordinate in a highly efficient and reliable fashion, thereby boosting the operation of modern power grids. To facilitate understanding, the key methods are presented together with their associated algorithms and detailed software codes. In parallel to theoretical treatments, this book further applies the methods into practical scenarios and industrial products, thus enhancing their credibility. The book serves as a guidance for electrical engineers and researchers in the field of power electronics and power systems.
Heart of the pill melancholy sea of clouds, white rainbow of the day in the youth. This was the summary of the fifth hidden spirit's life. In order to prove his innocence, Luo Ying, who lost both of his parents in the "Jade Wall extermination", joined the Imperial Capital and became its fifth hidden spirit, absorbed all of the true essence of the Twilight Jade and was falsely accused of being the murderer in the destruction of the bamboo forest in the radius of a hundred li under the Shang father, was heavily punished by the six realms. His blood essence and soul went into the devil's body and he became the Demon City's Young Master, Yun Jiu Tang. Because of a lucky chance, he found out about his past. After going through many trials and tribulations, he mastered the Heaven and Earth Scripture, defeated the Heavenly Demon Ancestral Sword, and foiled the conspiracy in the Six Realms. In the end, he fought his brother, Zhu Jiuyin, and defeated him. He saved the Qing Qiu mountain and the Six Realms, but he also lost his true love. He lived in seclusion in Jade Wall City and built a "Snowfall Drinking" teahouse to comfort himself for the rest of his life.
This book aims to investigate emerging power quality and stability problems as well as their solutions in more-electronics power systems. The majority of methods presented here are validated through simulation and/or experimental results, thereby improving their credibility. The ultimate objective of these methods is to achieve secured operation of modern power systems with increased (up to 100%) renewable energy penetration, which is an emerging topic in this field. Readers will not only learn about the knowledge of more-electronics power systems but also the step-by-step process of how they can implement this to their research work or industrial practice. This book caters to engineers and academics working in the field of power systems with the main focus of improving power quality and stability.
From 1625 to 1627 scholar-officials belonging to a militant Confucianist group known as the "Donglin Faction" suffered one of the most gruesome political repressions in China's history. Many were purged from key positions in the central government for their relentless push for a national moral rearmament under the Tianqi emperor. While their martyrs' deaths won them a lasting reputation for heroism and steadfastness, their opponents are remembered for fatally degrading the quality of Ming political life with their arrests and tortures of Donglin partisans. John Dardess employs a wide range of little-used primary sources (letters, diaries, eyewitness accounts, memorials, imperial edicts) to p...