模块化螺杆膨胀发电机组转速控制模型

上海交通大学学报（自然版） ›› 2016, Vol. 50 ›› Issue (04): 521-527.

模块化螺杆膨胀发电机组转速控制模型

鲍文龙，余岳峰

（上海交通大学机械与动力工程学院，上海 200240）

收稿日期:2015-03-29 出版日期:2016-04-28 发布日期:2016-04-28

Speed Control Modeling of Modular Screw Expander Generation System

BAO Wenlong,YU Yuefeng

(School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2015-03-29 Online:2016-04-28 Published:2016-04-28

摘要/Abstract

摘要： 摘要：为研究基于有机朗肯循环的模块化螺杆膨胀发电机组的动力机转速控制，建立了螺杆膨胀机转子的动态响应模型.对满液式蒸发器建立一种固定边界分段模型，并采用一阶惯性环节对模型进行补偿.针对模块化螺杆膨胀机组无调节阀直接控制进入螺杆机工质流量的特点，提出通过控制热源流体侧调节阀来间接控制螺杆机转速的方法.针对热源流量变化对工质蒸气流量及焓值都会产生影响的情况，分别建立系统的流量通道及焓通道模型.在Matlab中分别建立对应的系统动力机转速控制模型并仿真.仿真结果表明：通过控制热源流体流量来控制动力机转速的控制策略可行；相对于工质焓值，工质蒸气流量在转速调节中起主要作用.通过对转速、热源流量以及比例积分微分控制器参数等扰动信号的仿真分析可知，该控制系统具有较强的稳定性.

关键词: 模块化机组, 有机朗肯循环, 螺杆膨胀机, 转速控制

Abstract: Abstract： A dynamic response model of screw expander was established to study the speed control method of the modular screw expander generation system based on the organic Rankine cycle(ORC). A new method of fixed boundary multisection model was adopted in building the expander model. Because the modular ORC screw expander generation system does not have the steam regulating valve, the engine speed cannot be controlled directly by regulating the steam flow rate. Therefore, an indirectly method for regulating heat fluid flow rate was adopted. When the heat fluid flow rate was regulated, the steam rate and enthalpy changed at the same time. So, two types of physical model was established based on it. A simulation model was established in Matlab and the control model was tested and optimized. The simulation result show that this indirect method to control the speed of the engine is feasible and the steam rate plays a major role in the speed control system.

Key words: Key words： modular unit, organic Rankine cycle (ORC), screw expander, speed control

中图分类号:

TK 115

鲍文龙，余岳峰. 模块化螺杆膨胀发电机组转速控制模型[J]. 上海交通大学学报（自然版）, 2016, 50(04): 521-527.

BAO Wenlong,YU Yuefeng. Speed Control Modeling of Modular Screw Expander Generation System[J]. Journal of Shanghai Jiaotong University, 2016, 50(04): 521-527.

参考文献

［1］YAMADA Noboru, MOHAMAD Md Nor Anuar, KIEN Trinh Trung. Study on thermal efficiency of lowto mediumtemperature organic Rankine cycles using HFO1234yf［J］. Renewable Energy， 2012， 41(2)： 368375. ［2］李慧君, 吴凯槟, 杜威. 基于不同有机工质的蒸气有机工质联合循环发电模型热经济性分析［J］. 动力工程学报， 2012， 32(1)： 7277. LI Huijun, WU Kaibin, DU Wei. Thermal economy analysis of steamorganic fluid combined cycle power generation model based on different working fluids［J］. Journal of Chinese Society of Power Engineering， 2012， 32(1)： 7277. ［3］MADGAWA H H D, MIHAJLO G, WILLIAM M W, et al. Optimum design criteria for an organic Rankine cycle using low geothermal heat resource［J］. Energy， 2007， 32(9)： 16981706. ［4］ALESSANDRO F, MARCO V. Optimal design of binary cycle power plants for waterdominated， mediumtemperature geothermal fields［J］. Geothermics， 2009， 38(4)： 379391. ［5］SYLVAIN Q, RICGARD A, ANDREAS G, et al. Dynamic modeling and optimal control strategy of waste heat recovery organic rankine cycles［J］. Applied Energy， 2011， 88(6)： 21832190. ［6］ZHANG Jianhua, ZHANG Wenfang, HOU Guolian, et al. Dynamic modeling and multivariable control of organic Rankine cycles in waste heat utilizing processes［J］. Computers and Mathematics with Applications， 2012， 64(5)： 908921. ［7］陈薇, 黄虎. 两种蒸发器动态仿真建模方法的对比分析［J］. 南京师范大学学报(工程技术版)， 2009， 9(2)： 2228. CHEN Wei, HUANG Hu. Contrastive analysis of two modeling methods for dynamic simulation of evaporator［J］. Journal of Nanjing Normal University(Engneering and Technology Edition)， 2009， 9(2): 2228. ［8］范永胜, 徐治皋, 陈来九. 超临界直流锅炉蒸气发生器的建模与仿真研究（一）［J］. 中国电机工程学报， 1998， 18(4)： 246253. FAN Yongsheng, XU Zhigao, CHEN Laijiu. Modeling and simulation study on a supercritical oncethrough boiler steam generator［J］. Proceedings of the Chinese Society for Electrical Engineering， 1998， 18(4)： 246253. ［9］伏龙, 丁国良, 张春路，等. 螺杆冷水机组动态仿真［J］. 低温工程， 2002(6)： 510. FU Long， DING Guoliang， ZHANG Chunlu， et al. Dynamic simulation of screw chiller units［J］. Cryogenics， 2002(6)： 510.

[1]	胡传志, 沈建华, 彭晓晶. 基于限幅增量式PID的直流电动机转速控制系统[J]. 实验室研究与探索, 2017, 36(5): 24-27.
[2]	齐元渠，余岳峰. 双螺杆膨胀机泄漏过程的数值模拟与分析[J]. 上海交通大学学报（自然版）, 2016, 50(04): 496-501.
[3]	梁任1，余岳峰1，陈亮乐2，邓志强2，黄云2. 螺杆膨胀机有机朗肯循环系统的变工况特性[J]. 上海交通大学学报（自然版）, 2014, 48(09): 1291-1296.
[4]	王心悦1, 余岳峰1, 胡达2, 陈亮乐2, 闵承浩2, 董政文2. 全流-双循环地热发电系统分析[J]. 上海交通大学学报（自然版）, 2013, 47(04): 560-564.