| 基于光伏直驱变频式离心机系统的三元换流控制方法 |
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| 引用本文： | 赵志刚,张雪芬,刘怀灿,冯重阳,陈颖.基于光伏直驱变频式离心机系统的三元换流控制方法[J].制冷与空调(北京),2014(12):17-22. |
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| 作者姓名： | 赵志刚 张雪芬 刘怀灿 冯重阳 陈颖 |
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| 作者单位： | 珠海格力电器股份有限公司; |
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| 摘 要： | 针对目前市面上缺乏可应用于光伏中央空调系统的DC/DC稳压设备,以及常规光伏空调存在的能量损耗较大、能量不能实时上网等问题,提出一种无DC/DC和DC/AC等传统变流环节的光伏直驱变频式离心机系统;在系统及其3个独立单元之间建立能量平衡关系,采用三元换流控制方法对3个独立单元进行联动控制,实现能量的双向流动及实时切换。通过仿真建模及系统试验,证明该系统方案的可行性以及控制方法的合理性。
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| 关 键 词： | 光伏直驱变频式离心机系统 能量平衡 三元换流控制方法 |
Ternary commutation control method based on frequency-variable centrifuge system driven by PV directly |
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| Zhao Zhigang Zhang Xuefen Liu Huaican Feng Chongyang Chen Ying.Ternary commutation control method based on frequency-variable centrifuge system driven by PV directly[J].Refrigeration and Air-conditioning,2014(12):17-22. |
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| Authors: | Zhao Zhigang Zhang Xuefen Liu Huaican Feng Chongyang Chen Ying |
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| Affiliation: | Zhao Zhigang Zhang Xuefen Liu Huaican Feng Chongyang Chen Ying (Gree Electric Appliances, Inc. of Zhuhai) |
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| Abstract: | According to the issues of lack of DC/DC regulator devices used for PV central air-conditioning system in the present market,large energy loss and energy flows failing to connect to grid in real time for the conventional PV air-conditioning system,a kind of frequency-variable centrifuge system driven by PV directly without DC/DC,DC/AC and other traditional converter modules is proposed.Between the system and its three separate units,a relationship of energy balance is established.Based on the balance,a ternary commutation control method is used for the linkage control of these three separate units,so that the bidirectional energy flow and real-time switching can be realized.Through simulation modeling and system test,the feasibility of the system solution and the rationality of the control method are verified. |
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| Keywords: | frequency-variable centrifuge system driven by PV directly energy balance ternary commutation control method |
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