Title :
A passivity-based multilevel active rectifier with adaptive compensation for traction applications
Author :
Cecati, Carlo ; Dell´Aquila, Antonio ; Liserre, Marco ; Monopoli, Vito Giuseppe
Author_Institution :
Dept. of Electr. Eng., Univ. of L´´Aquila, Italy
Abstract :
The control of a single-phase multilevel H-bridge rectifier suitable for traction applications is considered. Such a converter often presents instability problems making difficult its design and uncertain its behavior. In this paper the use of a passivity-based controller is experimentally investigated. Such a controller achieves stability, unity power factor, good balancing between the two DC links, and satisfactory behavior even in the presence of load changes. A right choice of the damping parameters allows the fulfilling of system requirements in terms of DC-link voltage error and grid current distortion.
Keywords :
PWM power convertors; adaptive control; bridge circuits; cascade control; closed loop systems; compensation; damping; digital control; electric current control; power factor; rectifying circuits; stability; traction power supplies; DC links; DC-link voltage error; PWM; adaptive compensation; adaptive control; balancing; cascaded closed-loop controllers; current control; damping parameters; digital control; grid current distortion; load changes; nonlinear control; passivity-based multilevel active rectifier; pulsewidth modulation; single-phase multilevel H-bridge rectifier control; stability; traction applications; traction supply systems; unity power factor; Adaptive control; Capacitors; Damping; Digital control; Programmable control; Pulse width modulation; Pulse width modulation converters; Reactive power; Rectifiers; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2003.816552
