| 中央空调一机多水泵运行能效分析 |
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| 引用本文： | 张艺,王寒栋,唐汝宁.中央空调一机多水泵运行能效分析[J].深圳职业技术学院学报,2014(3):48-54. |
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| 作者姓名： | 张艺 王寒栋 唐汝宁 |
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| 作者单位： | [1]深圳职业技术学院机电工程学院,广东深圳518055 [2]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051 |
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| 摘 要： | 针对中央空调系统运行管理中实际存在的启动时段内运行一台冷水机组、二台冷冻水泵和二台冷却水泵的现象（称为“一机多水泵运行”）,根据现场测试获得的中央空调系统运行数据,从冷冻水流量、冷水机组能效、冷冻泵效率、冷冻水侧能效和冷冻站能效等多个角度对该运行管理方式进行了分析和评价,指出应改变现有的运行管理方式,使空调系统保持良好的运行性能模式.
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| 关 键 词： | 中央空调系统 运行管理 能效 冷冻水泵 |
Energy Efficiency of Central Air-Conditioning System Operated Under the Condition of One Chiller with Several Chilled-Water Pumps |
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| Institution: | MENG Fankun, LI Lanjun, LI Zhengguo(1. College of Electrical Engineering, University of South China, Hunan, Hengyang 421000 2. Shenzhen Polytechnic, Shenzhen , Guangdong 518000, China) |
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| Abstract: | Conventional phase-locked loop （PLL） is characterized by low detection accuracy and response speed under frequency offset of grid voltage conditions. A novel digital PLL based on Doubled Second Order Generalized Integrator-Quadrature Signal Generator （SOGI-QSG） is proposed with its working principles analyzed, the model of three-phase three level voltage SVPWM rectifier built, and the framework of control strategy given. Besides, simulation results show that the new PLL has better precision and adaption under frequency mutation, and it can realize active, reactive power respectively control with high power factor. |
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| Keywords: | SVPWM rectifier PLL SOGI decoupling control |
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