With the application of engineering polymers in the field of tribology, it is required that polymer materials not only have good tribology properties, but also meet the requirements of mechanical properties, heat resistance and aging resistance, so as to meet the application requirements of complex tribology conditions in modern engineering equipment. In this book, the accelerated aging tests and tribology tests in laboratory, as well as modern testing techniques and analysis methods are introduced from the perspective of aging resistance and tribology properties of common typical engineering...
With the application of engineering polymers in the field of tribology, it is required that polymer materials not only have good tribology properties,...
The book focuses on the topology and modulation of non-isolated and isolated high-power DC/DC converters. Firstly, two non-isolated soft-switching resonant step-up structures are proposed. Secondly, the auxiliary-and-main-currents-diversion idea is introduced to significantly reduce the switching loss of the converter, based on which a series of isolated ZCS resonant converters is proposed. Thirdly, the transformer magnetic flux density of isolated resonant converter is totally studied and an asymmetric pulse frequency modulation is proposed to avoid the transformer saturation problem....
The book focuses on the topology and modulation of non-isolated and isolated high-power DC/DC converters. Firstly, two non-isolated soft-switching ...
