【正文】 ttery capacities of control the devices, but at mix with the movement of generate electricity the system control and excellent turn the research of manage the method less. Because the exportation power and the burden powers of the breeze electrical engineering set, the solar cell array is affect by the outside factor, changing the scope to pare greatly, as a result turned the energy of generate electricity the system management to also put forward the higher request towards control and excellently. This text aims at the movement efficiency and credibility’s that the characteristics of the system movement designs one energy management system( energy management system, brief name EMS) to raise the system. posing of the systems This text with the south science and engineering university dispersion type wind force a solar energy of the new energy center admixture generates electricity the system for study the view, the structure diagram of the system, such as 2 － 1 of figure 1 show: May known by the chart 21, the system includes following several parties: The wind power machine and its controller: Total 15KW / sets of the biggest exportation power of the breeze machine, the wind force machine generates electricity the controller to make the wind force machine been placed in the biggest power to output the appearance always. Solar cell and its electricity generation controller: The altogether 5 groups, solar cell each group of peaks tile 3 k W, the solar energy electricity generation controller causes the solar cell array throughout to be at the maximum work rate output condition. The data collects the system:( the data acquires the system, the brief name DAS)Used for the electric voltage, the load power that collects to examine the solar cell exportation power, the wind power machine to output the power, the system direct current part, and circulate the relevant information to the system that collect, providing the energy management system to carry on the analytical processing. The energy manages the system: collect each function of system unit movement parameter that system provide according to the data, carry out the valid management to the system and controls. Buffer electric capacity: carry out parts of electric voltages of the system direct current steady. Load and inversion: The new energy center load classification, a kind of load is a load which the energy center work and the experiment must guarantee。 This article according to the system the load disposition situation, supposes two kind of loads maxi mum works reties EMBED , when EMBED + EMBED ＞ EMBED + EMBED Circulate two load devotions, namely EMBED ＝ 1 (5)Rule five In order to enhance the system direct ponent voltage the stability, when attracts 204 V, withdraws two kind of loads from the system, namely EMBED ＝ 0 When EMBED 230 V, automatically two kind of loads investments movement, namely EMBED ＝ 1 When EMBED 240 V, the automatic excision all renewable energy electric power facility carries on the power supply to the direct current generator, namely EMBED = EMBED = EMBED =0， EMBED ＝ 1 Inputs the multi outputs, the change plex characteristic in view of the system, this system uses in the intelligent control the fuzzy control technology (Fuzzy Control, is called FC) to realize to the system carries on the management and the control。 Bad rate of change is b。s direct current electric voltage etc. the effect value EMBED and burden EMBED be that class importation of the misty controller, output EMBED take for load the opposite system energy load strength: EMBED is a prehensive burden EMBED and load the direct current electric voltage etc. the effect be worth EMBED get of a three change the quantity. When EMBED big in expect to be worth, the ener gy that the system burden need is in addition to from can renewable energy in addition to provide, still having a part to need to be kept the ability ponent electric capacity by the direct current, then can lower the direct current side electric voltage, make the direct current side electric voltage EMBED be worth the direction variety toward expectation, then the burden need from can the renewable energy provide the energy drive die down。在設(shè)計(jì)風(fēng)一光發(fā)電系統(tǒng)中，普遍采用的設(shè)計(jì)思路是根據(jù)負(fù)載每天的總耗電量，和由當(dāng)?shù)貧庀髷?shù)據(jù)得到的日輻射量來確定太陽(yáng)能電池陣列、風(fēng)力發(fā)電機(jī)的容量，再來確定可再生能源發(fā)電控制裝置的功率和蓄電池容量，但是在混合發(fā)電系統(tǒng)的運(yùn)行控制和優(yōu)化管理方法方面的研究較少。 負(fù)載和逆變 器：新能源中心的負(fù)載分類，一類負(fù)載是能源中心辦公和實(shí)驗(yàn)所必須保證的負(fù)載；二類負(fù)載是能源中心的溫室控制等輔助設(shè)施所需的電能，當(dāng)可再生能源輸出電能有多余的能量時(shí)，才投入的負(fù)載。即能量管理系統(tǒng)結(jié)構(gòu)圖如圖 2－ 2 所示： EMBED , EMBED , EMBED , EMBED 和 EMBED 分別為系統(tǒng)的直流母線電壓、風(fēng)力機(jī)可輸出的最大功率、太陽(yáng)能電池陣列可輸出的最大功率、系統(tǒng)中一類負(fù)載所需功率和二類負(fù)載所需的功率； EMBED 和 EMBED 分別為系統(tǒng)的風(fēng)力機(jī)輸出利用系數(shù)和太陽(yáng)能電池陣列輸出利用率，即 EMBED 為風(fēng)力機(jī)啟用的臺(tái)數(shù)與風(fēng)力機(jī)總數(shù)之比 , EMBED 為 太陽(yáng)能陣列啟用的組數(shù)和太陽(yáng)能陣列組總數(shù)之比。 模糊集合將人的判斷、思維過程用比較簡(jiǎn)單的語(yǔ)言和數(shù)學(xué)形式直接表達(dá)出來。最常用的為 if－ then， else, also, or 等，如 2維模糊推理規(guī)則可表示為 Ｒ： if（偏差 is a；差變化率 is b；） then（控制量 is c；） 規(guī)則庫(kù)就是用來存放全部模糊控制規(guī)則，在推理時(shí)為 “ 推理機(jī) ” 提供推理的依據(jù)。設(shè)每臺(tái)風(fēng)力發(fā)電機(jī)和每組太陽(yáng)能電池陣列都工作在的最大輸出功率狀態(tài)，風(fēng)力發(fā)電和太陽(yáng)能發(fā)電裝置輸出總功率分別為 EMBED 和 EMBED ，系統(tǒng)對(duì)其利用率分別 EMBED 和 EMBED ，則（２－３）式可改寫為 EMBED EMBED 系統(tǒng)的結(jié)構(gòu)圖如圖２－７ 所示： 由圖２－７可知，系統(tǒng)的輸入量較多，針對(duì)風(fēng)力一太陽(yáng)能混合發(fā)電系統(tǒng)的特點(diǎn)，在這里我們采用分級(jí)模糊控制的策略來對(duì)系統(tǒng)進(jìn)行控制，并設(shè)計(jì)一個(gè)四級(jí)的分級(jí)模糊控制器來實(shí)現(xiàn)對(duì)混合發(fā)電系統(tǒng)進(jìn)行能量管理和控制。 4. ＥＭＳ的設(shè)計(jì) 本文所設(shè)計(jì)的風(fēng)能一太陽(yáng)能混合發(fā)電系統(tǒng)的結(jié)構(gòu)框圖如圖２－６所示： 為了提高可再生能源的利用效率，在風(fēng)能和太陽(yáng)能能夠滿足負(fù)載要求的情況下，負(fù)載所需求的能源則由風(fēng)能和太陽(yáng)能提供；在風(fēng)能和太陽(yáng)能不能滿足負(fù)載要求時(shí)，在充分利用可再生能源的基礎(chǔ)上，負(fù)載所需求的能源由風(fēng)能、太陽(yáng)能和電網(wǎng)共同提供。 （ 1）模糊化接口 模糊控制器的輸入通常是確定的量，必須要模糊化后，變?yōu)榭刂破魉J(rèn)識(shí)的語(yǔ)言或變量才能被控制器使用，模糊化接口是將確定的輸入量轉(zhuǎn)化為模糊量，它也是模糊控制器的輸入接口。 （ 3）規(guī)則三 在這里取直流母線電壓低于 192Ｖ時(shí)，通過并網(wǎng)控制器接通電網(wǎng)，由市電來補(bǔ)充負(fù)載所需短缺部分的電能，并由本文后面章節(jié)介紹的并網(wǎng)控制器使直流母線電壓維持 192Ｖ，即