Title :
A new high performance DC-DC converter with sensorless model reference modification
Author :
Kurokawa, Fujio ; Hirotaki, Shota
Author_Institution :
Nagasaki Univ., Nagasaki, Japan
fDate :
Sept. 28 2014-Oct. 2 2014
Abstract :
This paper presents a new high performance dc-dc converter with sensorless model reference modification. In the proposed method, output current is predicted from the duty ratio and the output voltage in order to eliminate the sensing resistor for output current detection. Only the output voltage and input voltage are detected for feedback and feed-forward. The bias value of the P-I-D control is changed using the input voltage and predicted output current. This bias value is controlled based on the formula of input-output characteristics of dc-dc converter. It is possible to achieve output voltage stabilization with small integral gain in the P-I-D control, which helps to improve transient response. In addition, the reference value is modified to suppress transient characteristics in the transient state. As a result, the proposed method achieves superior transient response without the power loss of the current detection resistor.
Keywords :
DC-DC power convertors; model reference adaptive control systems; sensorless machine control; three-term control; voltage control; P-I-D control; bias value; duty ratio; feedback; feedforward; high performance dc-dc converter; input-output characteristics; output current detection; output voltage stabilization; reference value; sensorless model reference modification; transient characteristics; transient response; transient state; DC-DC power converters; Digital control; Mathematical model; Resistors; Transient analysis; Transient response; Voltage control;
Conference_Titel :
Telecommunications Energy Conference (INTELEC), 2014 IEEE 36th International
Conference_Location :
Vancouver, BC
DOI :
10.1109/INTLEC.2014.6972221
