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href="http://www.souxuehui.com">中动å‘电机出¿U?/a>ã€€æ¥æºåQšhttp://www.souxuehui.com 日期åQ?018-04-19 09:52:15</p> </div> <div class="article_cont_box"><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      陿€ç¨³å®šåªæ˜¯å‘甉|œºòq¶è”˜qè¡Œçš„å¿…è¦æ¡ä»Óž¼Œ˜q˜ä¸èƒ½è¯´æ˜Žç³»¾lŸåœ¨é­å—æ€¥å‰§æ‰°åŠ¨æ—¶ä¿æŒåŒæ­¥è¿è¡Œçš„能力ã€?a href="http://www.souxuehui.com" target="_blank" title="æ½åŠå‘电机出¿U?>æ½åŠå‘电机出¿U?/a>以电¾|‘å‘ç”ŸçŸ­è·¯äØ“ä¾‹æ¥è¯´æ˜Ž˜q™ä¸€é—®é¢˜ã€‚当ç”늽‘å‘生短èµ\的时候,å„å‘甉|œºçš„功角特性åŠå…¶è¾“出功率都会å‘生çªç„¶å˜åŒ–。比如在æ¯çº¿é™„è¿‘å‘生短èµ\åQŒæ¯¾U¿ç”µåŽ‹æŽ¥˜q‘于é›Óž¼Œå‘电机间ž®±å®Œå…¨å¤±åŽ»è”¾pÕd’Œå½±å“。由于柴æ²ÒŽœº</span><span style="text-decoration: none; font-family: 'Times New Roman'; font-size: 14px;">调速器</span><span style="font-family: 'Times New Roman';font-size: 14px">å…ähœ‰ä¸€å®šæƒ¯æ€§ï¼ŒåŽŸåŠ¨æœºåŠŸçŽ‡åÆˆä¸ä¼šç«‹å³æ”¹å˜åQŒå„å‘ç”µæœø™{å­åœ¨æŸ´æÑa机剩余功率的作用下被加速(也å¯èƒ½å‡é€Ÿï¼‰åQŒæ¯å°æœº¾l„的加速情况å–决于该机¾l„的机械惯性ã€ç”µæ°”特性ã€çŸ­è·¯å‰çš„è¿è¡Œå‚敎ͼŒä»¥åŠçŸ­èµ\é˜ÀLŠ—å’ŒçŸ­è·¯æŒ¾l­æ—¶é—´ã€‚因此,在短路被切除以åŽåQŒä¸ä½†å„å‘ç”µæœø™{å­çš„相对ä½ç½®å‘生了å˜åŒ–,而且转速也ä¸ç›¸ä¸€è‡ß_¼Œå‘ç”µæœø™{å­èƒ½å¦ç»˜q‡ä¸€å®šçš„相对摆动æ¢å¤åŒæ­¥˜q行åQŒå°±è¦çœ‹å„机¾l„所å…ähœ‰çš„åŠ¨èƒ½ä»¥åŠæŸ´æ²ÒŽœºå‰©ä½™åŠ›çŸ©çš„å¤§ž®å’Œæ–¹å‘äº†ã€‚äØ“äº†å®šæ€§åœ°è¯´æ˜Žé—®é¢˜åQŒåªç›¸å¯¹åœ°çœ‹æŸä¸€å°å‘甉|œºè½¬å­çš„æ‘†åŠ¨è¿‡½E‹ï¼Œè€Œä¸è€ƒè™‘其他机组动æ€è¿‡½E‹çš„å½±å“ã€?/span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;white-space: normal;text-align: justify;text-indent: 28px"><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">å‡å®šåœ¨çŸ­è·¯è¢«åˆ‡é™¤ä»¥åŽåQŒæŸå°å‘甉|œºå…ähœ‰</span><span style="font-family: 宋体;font-size: 14px">功角ç‰ÒŽ€§ï¼Œä¸”此时å‘甉|œºçš„åŠŸè§’äØ“</span><span style="font-size: 14px">θ</span></span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">a</span></sub><span style="font-family: 'Times New Roman';font-size: 14px">åQŒåƈå‡å®šæ­¤åˆ»å‘ç”µæœø™{å­å’Œç”늽‘的电压矢é‡å…·æœ‰ç›¸åŒçš„转速,å³ç›¸å¯šw€Ÿåº¦</span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">为零。则在柴æ²ÒŽœºå‰©ä½™åŠŸçŽ‡çš„ä½œç”¨ä¸‹åQŒå‘甉|œºè½¬å­ç”?/span><span style="font-size: 14px">θ</span></span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">a</span></sub><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">被加速,</span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">è§’é€æ¸å¢žå¤§åQŒåœ¨åˆ°è¾¾</span></span><span style="font-family: 'Times New Roman';font-size: 14px">b</span><span style="font-family: 'Times New Roman';font-size: 14px">点以å‰ï¼ŒæŸ´æÑaæœø™{矩æ€ÀL˜¯å¤§äºŽå‘ç”µæœø™{矩,加速过½E‹ä¸€ç›´è¦å»¶ç®‹åˆ?/span><span style="font-family: 'Times New Roman';font-size: 14px">b</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">ç‚¹äØ“æ­¢ã€‚å½“</span><span style="font-size: 14px">θ</span></span><span style="font-family: 'Times New Roman';font-size: 14px">=</span><span style="font-family: 'Times New Roman';font-size: 14px">θ</span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">b</span></sub><span style="font-family: 'Times New Roman';font-size: 14px">æ—Óž¼Œå‘ç”µæœø™¾“出功率和柴æÑa机功率相òqŒ™¡¡åQŒå‰©ä½™è{çŸ©äØ“é›Óž¼Œç›¸å¯¹è½¬é€?/span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 14px">ä¸å†å¢žåŠ è€Œè¾¾æœ€å¤§å€¹{€‚由于此时å‘甉|œºè½¬å­çš„è{速大于电压矢é‡çš„转速,å‘ç”µæœø™{å­å°†å€ŸåŠ©æƒ¯æ€§è¶Š˜q?/span><span style="font-family: 'Times New Roman';font-size: 14px"> b </span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">点,¾l§ç®‹å¢žå¤§</span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">角,但是剩余功率改å˜äº†ç¬¦åøP¼Œå‘ç”µæœø™{å­å¼€å§‹å‡é€?/span></span><span style="font-family: 'Times New Roman';font-size: 14px">åQ?/span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">直到</span><span style="font-size: 14px">c</span><span style="font-family: 宋体;font-size: 14px">点,å‘电机的相对速度</span></span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">为零åQ?/span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">角达最大å€û|¼Œåœ¨å‰©ä½™è{矩的作用下,转å­å¼€å§‹äº†ç›¸åçš„è¿åŠ¨è¿‡½E‹ã€‚å‘甉|œºåœ¨åŠ é€Ÿè¿‡½E‹ä¸­æ‰€èŽ·å¾—çš„åŠ¨èƒ½å¯ç”¨åŠ é€Ÿé¢¿U?/span><span style="font-size: 14px">a'ab</span><span style="font-family: 宋体;font-size: 14px">表示åQŒåœ¨å‡é€Ÿè¿‡½E‹ä¸­æ‰€æ¶ˆè€—çš„</span></span><span style="font-family: 'Times New 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Roman';font-size: 19px"><span style="font-size: 14px">½E›_®šæ€§ï¼›å¦‚果加速颿U¯å¤§äº?/span><span style="font-size: 14px">bcb'b</span><span style="font-family: 宋体;font-size: 14px">åQŒåˆ™å‘ç”µæœø™{å­çš„˜q动ž®†è¶Š˜q?/span><span style="font-size: 14px">6'</span><span style="font-family: 宋体;font-size: 14px">点,柴æÑaæœºçš„å‰©ä½™è½¬çŸ©å†æ¬¡æ”¹å˜½W¦å·åQŒä‹Éå‘ç”µæœø™{å­è¿›ä¸€æ­¥åŠ é€Ÿï¼Œç›´è‡³å¤±åŽ»åŒæ­¥åQŒå› æ­¤ç³»¾lŸä¸å…·å¤‡åЍæ€ç¨³å®šæ€§ã€?/span></span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      在系¾lŸç»å—其他较大扰动的时候,也会出现¾cÖM¼¼çš„æƒ…况和问题。例如,机组òq¶èžR时如果投入的频差˜q‡é«˜æˆ–投入误差角较大åQ?/span><span style="text-decoration:underline;"><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">å‘电æœ?/span></span></span><span style="font-family: 'Times New Roman';font-size: 14px">转å­åœ¨æŸ´æ²ÒŽœºå‰©ä½™åŠŸçŽ‡ä½œç”¨ä¸‹ï¼Œä¹Ÿå°†å‡ºçŽ°ä¸Šè¿°åŠ é€Ÿã€å‡é€Ÿçš„æ‘‡æ‘†˜q‡ç¨‹åQŒåœ¨å‡é€Ÿé¢¿U¯ä¸èƒ½å’ŒåŠ é€Ÿé¢¿U¯ç›¸æŠ‰|¶ˆçš„æƒ…况下åQŒåÆˆè”æœº¾l„也会失åŽÕdЍæ€ç¨³å®šæ€§ã€‚当é‡åˆ°å¤§åŠŸçŽ‡å¼‚æ­¥ç”µåŠ¨æœºå¯åЍã€åÆˆè”æœº¾l„çªç„¶è§£åˆ—等情况åQŒåŒæ ·ä¼šäº§ç”Ÿòq¶è”</span><span style="font-size: 14px">柴æÑa</span><span style="font-family: 'Times New Roman';font-size: 14px">å‘电æœ?/span><span style="font-family: 'Times New Roman';font-size: 14px">¾l?/span><span style="font-family: 'Times New Roman';font-size: 14px">动æ€ç¨³å®šæ€§é—®é¢˜ã€?/span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      对于柴æÑa机电站æ¥è¯ß_¼Œç”׃ºŽç”늫™çš„容é‡è¾ƒž®ï¼Œä¸”å•å°å‘甉|œºåŠŸçŽ‡å’Œç”µç«™åŠŸçŽ‡æ¯”è¾ƒæŽ¥˜q‘,在动æ€è¿‡½E‹ä¸­åQŒæ¯¾U¿ç”µåŽ‹ä¹Ÿæ˜¯è¦å‰§çƒˆå˜åŒ–的,因此åQŒåЍæ€ç¨³å®šæ€§åˆ†æžï¼Œé€šå¸¸è¦è®¡½Ž—æ¯å°æœº¾l„è{å­çš„˜q动情况以åŠå„è{å­?/span><span style="font-family: 'Times New 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