DC bus self-oscillation suppression and optimal design for cascade aviation static inverter

This paper bases on small-signal modeling of DC/DC converter in cascade aviation static inverter, differences of small-signal modeling between CCM mode and DCM mode are studied. This paper analysis the causation of DC bus self-oscillation and also investigates the relationship between control loop parameters and low-frequency self-oscillation. In the end of paper it proposes design basis of compensation network which not only suppresses self-oscillation but also achieve excellent dynamic and steady-state performance.