Control of DC-DC converters with linear optimal feedback and nonlinear feedforward

Author

Garofalo, Francesco ; Marino, Pompeo ; Scala, Stefano ; Vasca, Francesco

Author_Institution

Dipartimento di Inf. e Sistemistica, Universita degli Studi di Napoli Federico II, Italy

Volume

9

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

607

Lastpage

615

Abstract

This paper describes a new control design procedure for PWM DC-DC converters. The control action has two components: a linear feedback, designed via the LQ approach, and a nonlinear feedforward. The proposed control scheme guarantees excellent regulation of the output voltage, even in the presence of large variations of the input reference signal, as pointed out by numerous simulations carried out on different converter topologies. Good performances are also achievable when a suitably designed estimator is inserted into the control loop to reconstruct internal variables and input voltage disturbances from output voltage measurements

Keywords

DC-DC power convertors; PWM power convertors; feedback; feedforward; optimal control; voltage control; DC-DC converter control; LQ approach; PWM DC-DC converters; control loop; input voltage disturbances; linear optimal feedback; nonlinear feedforward; output voltage control; output voltage measurements; Control design; DC-DC power converters; Linear feedback control systems; Optimal control; Performance evaluation; Pulse width modulation; Pulse width modulation converters; Topology; Voltage control; Voltage measurement;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.334776

Filename

334776