| Abstract |
This paper examines voltage quasi-resonance when a resonant (lr, er) stage is used in conjunction with a voltage inverter linked to an inductive load (L, R). The study analyses constraints inherent to this type of control and details the equations of the various switching phases. To achieve sinusoidal load current, conventional control methods have a sampling period equal to a period of the resonant interface, which leads to high number of pulses. This paper proposes new PWM control methods based on nonlinear, recurrent modellings of the system. For equivalent performance, these control methods significantly reduce the number of pulses and enables the use of naturally slower digital controls. |
