【摘要】：新型清潔能源發(fā)電技術(shù)被認(rèn)為是解決能源危機(jī)、遏制環(huán)境污染、滿(mǎn)足不斷增長(zhǎng)的電力需求的重要方法。其中，將范圍廣、類(lèi)型多、儲(chǔ)量大的熱能資源，以分布式發(fā)電的方式，進(jìn)行熱電轉(zhuǎn)換或熱電聯(lián)供，應(yīng)用前景良好。斯特林發(fā)動(dòng)機(jī)作為熱效率高的外燃機(jī)，具有內(nèi)燃機(jī)、燃?xì)廨啓C(jī)等不具備的特點(diǎn)，如燃料適應(yīng)性強(qiáng)、零污染排放、低噪音等，具有明顯的發(fā)電應(yīng)用優(yōu)勢(shì)。然而，斯特林機(jī)的功率調(diào)節(jié)緩慢，外特性軟，不能自起動(dòng)與控制轉(zhuǎn)速，將斯特林發(fā)動(dòng)機(jī)作為發(fā)電系統(tǒng)的原動(dòng)機(jī)，系統(tǒng)的控制策略需要匹配其工作特性。 為了解決上述問(wèn)題，本文針對(duì)以籠型異步電機(jī)作為發(fā)電機(jī)的斯特林發(fā)電系統(tǒng)，結(jié)合發(fā)電端斯特林機(jī)功率控制特性和異步電機(jī)的轉(zhuǎn)差頻率控制、儲(chǔ)能端蓄電池的充放電特性、用電端逆變器在并網(wǎng)發(fā)電/離網(wǎng)發(fā)電時(shí)不同的控制要求，分析并設(shè)計(jì)了系統(tǒng)并/離網(wǎng)控制方案，詳細(xì)闡述了系統(tǒng)的整體控制流程。 本文設(shè)計(jì)并完成了包含主功率電路、雙向DC-DC變換器和控制電路的發(fā)電系統(tǒng)控制柜一臺(tái)，完成了軟件結(jié)構(gòu)設(shè)計(jì)和控制程序編程，并根據(jù)系統(tǒng)需要，設(shè)計(jì)并實(shí)現(xiàn)了基于MODBUS的組件間485通信。 為了驗(yàn)證控制策略的有效性，本文設(shè)計(jì)了斯特林發(fā)電系統(tǒng)各組件的參數(shù)并選型，組建了由斯特林外燃機(jī)、異步電機(jī)等組件組成、以天然氣為供應(yīng)燃料的50kW發(fā)電系統(tǒng)，以測(cè)試控制方案。通過(guò)試驗(yàn)測(cè)試，系統(tǒng)能實(shí)現(xiàn)拖動(dòng)斯特林起動(dòng)、外網(wǎng)充電、發(fā)電功率調(diào)節(jié)等功能，實(shí)現(xiàn)了系統(tǒng)的控制目標(biāo)。 論文結(jié)果表明，，本文針對(duì)斯特林發(fā)動(dòng)機(jī)異步電機(jī)發(fā)電系統(tǒng)的控制策略滿(mǎn)足工作要求，斯特林發(fā)電系統(tǒng)具有進(jìn)一步研究和開(kāi)發(fā)的潛力。
[Abstract]:New clean energy power generation technology is considered to be an important method to solve the energy crisis, curb environmental pollution and meet the increasing demand for electricity. Among them, the thermal energy resources with a wide range, many types and large reserves will have a good prospect in the application of thermal power conversion or cogeneration of heat and power in the way of distributed power generation. Stirling engine, as an external gas engine with high thermal efficiency, has many advantages such as strong fuel adaptability, zero pollution emission, low noise and so on, which are not available in internal combustion engines and gas turbines. However, the power regulation of Stirling engine is slow, the external characteristic is soft, and it can not start and control the rotational speed. The Stirling engine is regarded as the prime mover of the power generation system, and the control strategy of the system needs to match its working characteristics. In order to solve the above problems, this paper aims at the Stirling power generation system with cage induction motor as the generator, combining the power control characteristics of the Stirling generator at the generator end and the switching frequency control of the asynchronous motor, and the charging and discharging characteristics of the storage battery. The different control requirements of power terminal inverter in grid-connected generation and off-grid generation are analyzed and designed, and the overall control flow of the system is described in detail. In this paper, a control cabinet of power generation system including main power circuit, bidirectional DC-DC converter and control circuit is designed and completed. The software structure design and control program are completed, and according to the need of the system, The communication between components based on MODBUS is designed and realized. In order to verify the effectiveness of the control strategy, the parameters of each component of Stirling power generation system are designed and selected, and a 50kW power generation system, which is composed of Stirling external gas generator, asynchronous motor and natural gas supply fuel, is constructed. To test the control scheme. The test results show that the system can realize the functions of driving Stirling starting, charging the outer net, and regulating the power of power generation, and realizes the control goal of the system. The results show that the control strategy of Stirling engine asynchronous motor power generation system meets the requirements of the work, and the Stirling power generation system has the potential of further research and development.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM343

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 許輝;張紅;白z\;丁莉;莊駿;;碟式太陽(yáng)能熱發(fā)電技術(shù)綜述(二)[J];熱力發(fā)電;2009年06期

2 王國(guó)瑩;霍天強(qiáng);;太陽(yáng)能熱發(fā)電——太陽(yáng)能斯特林熱發(fā)電[J];西北水力發(fā)電;2006年S1期

3 鄭克h

本文編號(hào)：2249899