Sampled-Data Modeling and Analysis of PWM DC-DC Converters Part 2. The Power Stage

Abstract

The power stage of the PWM DC-DC converter is modeled and analyzed using the sampled data approach. This work complements the companion paper 1 which develops sampled-data models and analysis for the closed-loop converter. Separate models for the power stage are essential for controller design. The work addresses continuous and discontinuous conduction mode under voltage mode control, and continuous conduction mode under current mode control. For each configuration, nonlinear and linearized sampled-data models, and control-to-output transfer function are derived. Use of these models for controller design is illustrated. In addition, a new continuous-time switching frequency-dependent model of the power stage is derived from the sampled-data model. Examples illustrate the increased accuracy of control design using the new power stage models.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA438678

Entities

People

  • Chung-chieh Fang
  • Eyad H. Abed

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Clocks
  • Closed Loop Systems
  • Computer Simulations
  • Converters
  • Data Modeling
  • Dc-To-Dc Converters
  • Dynamics
  • Eigenvalues
  • Electrical Engineering
  • Engineering
  • Equations
  • Feedback
  • Frequency Response
  • Switched Mode Power Supplies
  • Time Domain
  • Transfer Functions

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Plasma Physics.