隔离型三相双向DC/DC变换器的GSSA建模  

Modeling of the Isolated Three-Phase Bi-Directional DC/DC Converter with GSSA

作　　者：章建军[1] 

机构地区：[1]北方工业大学电气与控制工程学院,北京100041

出　　处：《电子科技》2017年第7期25-28,32,共5页Electronic Science and Technology

摘　　要：针对桥式双向DC/DC变换器拓扑系统无法采用传统的状态空间平均法建模和分析的问题,提出采用基于频域分解建模思想的广义状态空间平均法(GSSA),将时域系统模型通过傅里叶级数变换成频域线性的广义状态空间模型。根据广义状态空间平均法的基本原理,在时域模型的基础上,推导出隔离型三相双有源桥双向DC/DC变换器的广义状态空间平均模型。通过实例仿真对比,相电流相似度达96.3%,输出电压相似度达99.0%,结果验证了所建立模型的正确性和有效性。The traditional state space averaging method cannot be used for modeling and analyzing the bi - directional DC/DC converter topology system with bridge. In this paper, we propose the generalized state space averaging method （GSSA） based on frequency domain decomposition modeling idea. The time domain system model shifts by Fourier series transformation into a frequency domain linear generalized state space model. According to the basic principle of Generalized State Space Averaging method, the basis of the detailed derivation of generalized state space averaging model based on the time domain model is given for isolated three - phase dual active bridge bi - directional DC/DC converter with phase shifting type. Simulation of an example shows a phase -current similarity of 96.3% and an outputvoltage similarity of 99.0%, demonstrating the correctness and effectiveness of the established model.

关 键 词：状态空间平均法 双向DC/DC 三相变换器 建模 GSSA 

分 类 号：TN86[电子电信—信息与通信工程] TM46[电气工程—电器]