【正文】 C supplied current of the power converter between the two Switched Reluctance motors could also be changed into the discrete amount at the interval [5, +5], based on the equations as follows, The discrete increment of the duty ratio of PWM signal of the Switched Reluctance motor 2 at the interval [5, +5] could be changed into the continuous amount at the interval [%, +%], based on the equations as follows, There is a decision forms of the fuzzy logic algorithm based on the above principles, which was stored in the programme storage cell of the controller. While the difference of the distribution of the loads between the two Switched Reluctance motors could be got, the duty ratio of PWM signal of the Switched Reluctance motor 2 will be regulated based on the decision forms of the fuzzy logic algorithm and the distribution of the loads between the two Switched Reluctance motors could be balanced. IV. TESTED RESULTS The developed double Switched Reluctance motors parallel drive system prototype had been tested experimentally. Table I gives the tests results, where σ is the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1, σ is the relative deviation of the average DC2 supplied current of the power converter in the Switched Reluctance motor 2, and, TABLE I. TESTS RESULTS OF PROTOTYPE It is shown that the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1 and in the Switched Reluctance motor 2 is within 177。10% Keywords switched reluctance。 Technology, Xuzhou 221008, China Abstract—The paper presented the double Switched Reluctance motors parallel drive system for the electrical traction in shearer. The system ponents, such as the Switched Reluctance motor, the main circuit of the power converter and the controller, were described. The control strategies of the closedloop rotor speed control with PI algorithm and balancing the distribution of the loads with fuzzy logic algorithm were given. The tests results were also presented. It is shown that the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1 and in the Switched Reluctance motor 2 is within 177。 coal mine。給出了由通過采用比例 積分算法的調(diào)節(jié)轉(zhuǎn)子速度的閉環(huán)回路和模糊邏輯算法實現(xiàn)的負荷的均衡分布組成的控制策略。一方面由于它是潮濕的 ,高粉塵的 ,和易燃的環(huán)境。采煤機是采煤的主要礦山設(shè)備。電傳動系統(tǒng)比液壓傳動系統(tǒng)的故障率低。開關(guān)磁阻電動機傳動是煤礦調(diào)速傳動系統(tǒng)的主要設(shè)備，由于它的高工作可靠性和高 容錯能力。轉(zhuǎn)子上沒有繞組，以至于轉(zhuǎn)子上沒有銅損和很小的鐵損。 Ⅱ系統(tǒng)組成 電牽引采煤機的開關(guān)磁阻電動機傳動是一個雙重開關(guān)磁阻電動機并聯(lián)傳動系統(tǒng)。電動機的額定功率是 40KW，轉(zhuǎn)速是 1155r/min，調(diào)速范圍是 100r/min~1500r/min。功率變換器的主要電路如圖二所示。在開關(guān)磁阻電動機 1中，功率變換器主要開關(guān)的觸發(fā)信號是通過 PWM信號調(diào)制的。 轉(zhuǎn)子速度在 K1時間內(nèi)的差， 在 k時刻內(nèi)，開關(guān)磁阻電動機 1PWM信號占空比， 在 k1時刻內(nèi)，開關(guān)磁阻電動機 1PWM信號占空比。在模糊邏輯調(diào)節(jié)器中有兩個輸入控制參數(shù)，一個是雙重開關(guān)磁阻電動機之間的功率變換器的平均電流的偏差，另一個是雙重開關(guān)磁阻電動機之間的功率變換器的平均直流電流的偏差的變化。 開關(guān)磁阻電動機 2在 時的 PWM信號的占空比為： 其中， 在 時刻的 PWM 信號占空比的增量， 是開關(guān)磁阻電動機 2在 時刻的 PWM信號的占空比。公式如下： 在區(qū)間［ ５， +５］內(nèi)，開關(guān)磁阻電動機２的功率變換器ＰＷＭ信號的占空比的分散增量可以轉(zhuǎn)變?yōu)樵趨^(qū)間［ １ .０％， +１ .０％］內(nèi)的連續(xù)增量，公式如下： 根據(jù)上面的原理，這里是模糊邏輯算法的一 個判定形式。表一給出了測試結(jié)果，其中 為開關(guān)磁阻電動機１的功率變換器的平均直流電流的相對誤差， 為開關(guān)磁阻電動機２的功率變換器的平均直流電流的相對誤差，即： 表一：樣機的實驗結(jié)果 該表顯示了開關(guān)磁阻電動機 1和開關(guān)磁阻電動機 2的功率變換器的平均直流的相對誤差為 10%? Ⅴ．結(jié)論 本章介紹了電牽引采煤機雙重開關(guān)磁阻電動機的并聯(lián)驅(qū)動系統(tǒng)