Lecture 10 - EEL 5245 Power Electronics I Lecture 10 Control and Dynamics of Dc-dc Converters Insturctor Dr Sam Abdel-Rahman School of Electrical

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EEL 5245: Power Electronics I Lecture # 10 Control and Dynamics of Dc-dc Converters School of Electrical Engineering and Computer Science University of Central Florida Insturctor: Dr. Sam Abdel-Rahman
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2 Control and Dynamics of Power Converter • Closed loop systems and the advantages of feedback control. • Stability of closed loop control. • Control loop modeling and transfer functions. • Closed loop controllers and compensators.
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3 A power converter must regulate its output voltage tightly under different operating conditions, such as: – Load steps. – Input voltage variation. – Components’ aging and tolerances. – Temperature variation. – Non ideal effects and power losses. A switching converter has a controlled variable (V o ), a control input (d), and two disturbances (V in and I load ).
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4 Therefore, a feedback control loop is required to maintain tight regulation, it is basically responsible to vary the control input (duty cycle) in a manner that makes the control variable (output voltage) to track a certain reference signal.
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This note was uploaded on 10/05/2010 for the course EEL 5245 taught by Professor Abdel-rahman during the Fall '10 term at University of Central Florida.

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Lecture 10 - EEL 5245 Power Electronics I Lecture 10 Control and Dynamics of Dc-dc Converters Insturctor Dr Sam Abdel-Rahman School of Electrical

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