CAJ | 학술논문

为了提高复合电源双向 DC/DC 变换器工作过程中的动态特性，提出一种用于三通道交错并联双向Buck/Boost变换器的R-S-T控制策略。分析该变换器在Buck/Boost模态下工作过程，建立了交流小信号模型并得出控制变量到状态变量的传递函数，在此基础上设计了双向DC/DC变换器的R-S-T控制系统。相较于传统的PI控制，R-S-T控制策略具有更好的动态和稳态响应特性，最后运用Matlab/Simulink软件对该变换器系统进行仿真。结果表明，基于R-S-T控制的复合电源双向DC/DC变换器具有响应速度更快，超调量更小，鲁棒性更强的特点。
위료제고복합전원쌍향 DC/DC 변환기공작과정중적동태특성，제출일충용우삼통도교착병련쌍향Buck/Boost변환기적R-S-T공제책략。분석해변환기재Buck/Boost모태하공작과정，건립료교류소신호모형병득출공제변량도상태변량적전체함수，재차기출상설계료쌍향DC/DC변환기적R-S-T공제계통。상교우전통적PI공제，R-S-T공제책략구유경호적동태화은태향응특성，최후운용Matlab/Simulink연건대해변환기계통진행방진。결과표명，기우R-S-T공제적복합전원쌍향DC/DC변환기구유향응속도경쾌，초조량경소，로봉성경강적특점。
In order to improve the working process in dynamic performance of the hybrid power bi-directional DC/DC converter, R-S-T control strategy is put forward for three-channel staggered parallel bi-directional Buck/Boost converter. The working process of converter in Buck/Boost mode is analyzed by magnetic integration theory, AC small signal model is established and the transfer function from control variables to the state variables is obtained, based on which the R-S-T control system of bi-directional DC/DC converter is designed. Compared to traditional PI control method, R-S-T control strategy has better dynamic and steady-state response characteristics in controling three-channel staggered parallel bidirectional converter. Finally, the converter system is simulated by using Matlat/Simulink software. The simulation results show that the hybrid power bi-directional DC/DC converter based on R-S-T control has faster response speed, smaller overshoot volume, and stronger robustness. This work is supported by National Natural Science Foundation of China (No. 51177067).