Energy Factor Application in AC and DC Motor Drives

AC and DC motor variable-speed drive systems are the main projects of the “power electronics.” Energy storage in AC and DC motors has recently been investigated and discussed. AC and DC motors are an important equipment to convert the electrical energy to mechanical energy. Variable-speed drive system is the main project of the “power electronics.” Although digital control theory has been applied in all motor drive systems for a long time, unfortunately the converters were not treated as correct models. One can think that all these systems are digital control systems and the digital-control theory has to be applied to these systems. Those topics are discussed in this chapter. Most discussions are novel approaches of the development in digital power electronics. The chapter discusses energy storage in motors, DC/AC voltage source, AC/DC current source, AC motor drives, and DC motor drives.

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