The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We have proposed the sensorless model control based on the static model equation of the dc-dc converter that is able to change the bias value corresponding to changes of the load current, the input voltage and output voltage. The sensorless model control can regulate the output voltage. On the other hand, the transient response of output voltage is not improved. Therefore, an improvement of the transient...
In this paper, we present a feedback gain changing dc-dc converter. The proposed method corresponds to the input voltage variation because the integral gain is determined in consideration of it. Generally, a quick transient response cannot be obtained when the proportional gain is small. On the other hand, when the proportional gain is set to a large value, the transient response is improved. However,...
In this paper, we present a new quick response digital control dc-dc converter based on a dynamic unstable gain to improve transient response. In the proposed method, the proportional gain is set to the small value in the steady state and the large value over the stability limit for only a short time in the transient state. Compared with the conventional PID, the undershoot, the overshoot and convergence...
The 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...
The purpose of this paper is to discuss a current prediction algorithm for sensorless model control dc-dc converter. In the proposed method, the sensing resistor for the current detection is eliminated by predicting the output current. The output current is predicted from the equation of the relationship between the output and input voltage in the static state using the duty ratio and the output voltage...
The aim of this paper is to give a comparative study on the effect of neural network based reference modification method for a digitally controlled dc-dc converter when circuit parameters and PID control parameters are changed. In general, the parameters of PID control are selected to satisfy both stable regulation of static state and followability of transient state. The selection of parameter values...
This paper presents a neural network based PID parameter selection control to improve the transient response of dc-dc converters. In the conventional PID control, parameters of it such as proportional, integral, and differential coefficients are selected as fixed parameters to regulate both transient and steady-state characteristics simultaneously as much as possible. The parameter setting of PID...
This paper presents a novel sensorless model control dc-dc converter. In the proposed method, the output current is predicted from the duty ratio and the output voltage in order to exclude the sensing resistor. Only the output voltage and the input voltage are detected. The transient characteristics in the proposed method without the current detection are compared to the existing proposed method and...
The purpose of this paper is to present a model control method without a current detection. In the proposed method, output current is predicted from the duty ratio and the output voltage in order to exclude the sensing resistor. Only the output voltage and input voltage are detected. The bias value of the P-I-D control is changed using the predicted output current. This value is controlled based on...
This paper presents the digital control method for the wide transient range dc-dc converter. We have already reported that an exponential function model is effective in improvement of transient characteristic. There is a problem that calculation time is long by using the exponential function and the square root. In this paper, those functions are approximated in order to achieve the calculation time...
This study presents a novel adaptive control based on a neural network for dc -- dc converters. The control method is required to adapt to changes of conditions to obtain high performance dc -- dc converters. In this study, the neural network control is adopted to improve the transient response of dc -- dc converters. It woks in coordination with a conventional PID control to realize a high adaptive...
The purpose of this paper is to present a novel reference modification dc-dc converter using the reactor current sensing method and to compared its transient characteristics with the conventional output current sensing method. The proposed method uses the reactor current sensing method with the R-C filter in order to exclude the sensing resistor for the output current sensing method. Moreover, transient...
This paper presents a new STS (Steady-state-error and Transient Suppressions) model dc-dc converter using the reactor current and its transient characteristics. The controlled object is the reference bias in the P-I-D control and the reference value in the P control. The reference bias is controlled in both steady and transient states. The reference value is modified to suppress transient characteristics...
This paper presents a new quick response digital control dc-dc converter with the bias modification and its transient characteristics. In this new research, the reference bias in the P-I-D control is controlled by the reactor current sensing method with the R-C filter. In this case, the averaged reactor current is used in the model control by the low-pass filter with op-amp. In this paper, the proposed...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.