INVESTIGADORES
BOTTERON Fernando
congresos y reuniones científicas
Título:
Digital Voltage and Current Controllers for Three-Phase PWM Inverter for UPS Applications
Autor/es:
FERNANDO BOTTERÓN, HUMBERTO PINHEIRO, HILTON A. GRÜNDLING, JOSÉ R. PINHEIRO, HÉLIO L. HEY
Lugar:
Chicago - USA
Reunión:
Congreso; IAS 2001; 2001
Resumen:
Abstract
This paper proposes discrete time voltage and current controllers for
three-phase PWM inverters used in UPS applications. An accurate state space
discrete model of the PWM inverter-filter-load, which takes into account
nonlinearities and propagation delays associated with a real time digital
implementation, is derived for the controller design. The output voltages and
inductors currents are dynamically limited by means of MIMO controllers
designed using optimal servo linear quadratic regulators, which ensure
stability for the system at all operating conditions. In order to ensure smooth
transitions among the different modes of operation, a nonlinear MIMO
anti-windup method is proposed to update the servo variables. A 15kVA PWM
inverter fully controlled by the DSP controller TMS320F241 has been used to
validate the proposed approach. Simulations and experimental results show a
good transient and steady state performances from no-load to short circuit
operation.