Furukawa, YudaiShirakawa, TakuyaKurokawa, FujioÇolak, İlhami2019-01-192019-01-1920150275-0473https://hdl.handle.net/11363/918The purpose of this paper is to propose a digitally proportional gain varying method for dc-dc converter. In the proposed method, the proportional gain is set to a small value in the steady state and is changed to a large value over stability limit for only a short time in the transient state. Using the proposed method, the transient response can be improved while the dc-dc converter system is kept in stable. Compared with the conventional PID control, the undershoot and the convergence time are improved by 69% and 75%, respectively. Furthermore, the capacitance of output smoothing capacitor must be set to a large value to maintain the stability of system when the control gain is set to a very large value. However, that can be reduced because the very large gain is set for only a short time to improve the transient response in the proposed method. Therefore, the miniaturization of main circuit can be expected.eninfo:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 United StatesResearch Subject Categories::TECHNOLOGY::Electrical engineering, electronics and photonicsConference Object2-s2.0-84990937926N/AWOS:000399130300071N/A