Summary: The role of Radio-Frequency (RF) Power Amplifiers (PAs) in today's and tomorrow's consumer and state-of-the-art electronics is crucial, catering to the stringent performance (i.e., linearity and output power) and real-estate (i.e., size) requirements of portable systems and the power limitations of battery-powered applications. Key to the success of any portable device is battery life (or runtime), and PAs can be a significant and detrimental load in this regard, especially because they capture a significant portion of the total power budget and they characteristically have poor power efficiencies. This course will address the advent of dynamically adaptive biasing schemes in PA applications to increase power efficiencies, which is generally done by essentially transforming and redefining the operating environment of the PA for maximum performance at optimum power levels, and consequently prolonging battery life. After completing this course you should be able to develop an understanding of dynamically adaptive biasing schemes in PA applications.
Summary: This is a 2-part tutorial. The second-half of the course will examine the basis of vector control and encoder-less operation of ac machines in order to design speed and position controllers for such machines. After completing this course you should be able to develop an understanding of the basis of vector control and encoder-less operation of ac machines.
Summary: This is a 2-part tutorial. The first-half of this course will focus on the basics and analyze induction and permanent-magnet ac machines in a way that clearly explains how these machines operate on a physical basis, and hence how they ought to be controlled for optimum performance. After completing this course you should be able to develop an understanding of how ac machines operate on a physical basis.
Summary: This course will begin by providing a historical perspective of Hybrid Electric Vehicles. Next an overview of the Toyota input split e-CVT fundamentals and operation, and the Ford input split e-CVT fundamentals and operation will be presented. The course will then focus on e-CVT dynamics. Electric variator theory and input split examples will be provided followed by a presentation of GM-Allison compound split fundamentals and operation. Next, Compound split dynamics will be presented followed by the Timken compound split system and the Renault compound split system. Finally, energy storage system technologies will be presented as well as a summary and cost illustrations. After completing this course you should be able to develop an understanding of: The history of Hybrid Electric Vehicles; Electric veriator theory; Energy storage system technologies.
Summary: This tutorial is intended for those who are new to the field of power electronics. It discusses the disciplines that support power electronics, and provides some motivational examples that serve to illustrate how the form of power converters is developed to perform a function. Some elements of how power converters are controlled is also covered. The tutorial ends with a discussion of relevant reference materials.
Summary: This course will introduce the overall approach to semiconductor device thermal characterization. The course will also focus on the principle of linear superposition as applied to thermal system design.
Summary: This course will provide an in-depth presentation of specific and highly non-linear thermal failure mechanisms (thermal runaway). The course will discuss how it arises and how it may be analyzed. The focus will be within the particular context of power semiconductor devices, but it should also become evident how the concept may be applied more generally.
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