Optimum digital control of PWM rectifiers
- Resource Type
- Conference
- Authors
- Tenti, P.; Zuccato, A.; Rossetto, L.; Bortolotto, M.
- Source
- Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics Industrial electronics control and instrumentation - IECON '94 Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on. 1:382-387 vol.1 1994
- Subject
- Power, Energy and Industry Applications
Computing and Processing
Components, Circuits, Devices and Systems
Pulse width modulation
Digital control
Rectifiers
Digital filters
Current control
Absorption
Reactive power
Delay
Microcontrollers
Testing
- Language
The paper presents an optimum digital control technique suitable for three-phase PWM rectifiers with a capacitive filter in the DC link. The proposed technique is based on a predictive current control loop, which does not need line voltage sensing and results in minimum RMS current absorption and unity power factor in any operating condition. Moreover, a smooth transition from sinusoidal to square-wave operation is provided and calculation delays are compensated. The control algorithm has been implemented on a INTEL 80C196KC microcontroller and tested on a 2.5 kVA prototype. Some experimental results are reported together with a description of the implemented algorithms.ETX