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何昕东,汪洋,石健将.1 kVA高性能单相中频逆变电源的研制[J].电源学报,2018,16(6):77-83
1 kVA高性能单相中频逆变电源的研制
Research on 1 kVA High-performance Single-phase Middle-frequency Inverter
投稿时间:2017-01-17  修订日期:2018-03-17
DOI:10.13234/j.issn.2095-2805.2018.6.77
中文关键词:  移相全桥  中频逆变器  二次纹波电流抑制  前馈控制
英文关键词:phase shifted full-bridge  middle-frequency inverter  suppression of secondary ripple current  feed-forward control
基金项目:
作者单位E-mail
何昕东 浙江大学电气工程学院, 杭州 310027  
汪洋 浙江大学电气工程学院, 杭州 310027  
石健将 浙江大学电气工程学院, 杭州 310027 jianjiang@zju.edu.cn 
摘要点击次数: 418
全文下载次数: 321
中文摘要:
      针对低压直流输入/中频400 Hz/115 V交流输出的高功率密度航空变流器的应用需求,提出了两级电路拓扑结构,其前级采用并-串型移相全桥结构实现隔离和升压的功能,后级采用全桥电路实现逆变功能。同时,为减小单相逆变器直流侧的二次纹波电流对前级的影响,前级单模块采用加入陷波器的负载电流前馈控制策略。为了进一步提高前级并-串型DC-DC变换器的动态性能,还提出了一种主从控制的均压控制策略;为了提高后级逆变电路的动态性能和负载调整率,提出一种改进的前馈控制策略。仿真和实验均验证了上述两级结构逆变电源控制策略的可行性。
英文摘要:
      A two-stage circuit topology was proposed in this paper to meet the application demands for a high power density converter used in the field of aerospace, which was with low voltage DC input, middle-frequency of 400 Hz, and 115 V AC output. The pre-stage adopted an input parallel and output series(IPOS) phase shifted full-bridge str-ucture to realize isolation and voltage boost, while the post-stage selected the full-bridge circuit to realize the inverter function. Meanwhile, to suppress the effect on the pre-stage due to the secondary ripple current on the DC side of the single-phase inverter, the pre-stage module adopted a load current feedforward control strategy with wave trap; to further improve the dynamic response of the pre-stage IPOS DC-DC converter, a voltage balancing control strategy under master-slave control was also proposed. Moreover, an improved feedforward control strategy was proposed to improve the dynamic performance and load regulation rate of the post-stage inverter circuit. Finally, the validity of the two-stage inverter control strategy was verified by simulation and experimental results.
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