交流电牵引采煤机在倾斜煤层的应用  

Application of AC Haulage Coal Shearer to Inclined Seam

作　　者：许森祥[1] 王志强 

机构地区：[1]煤炭科学研究总院上海分院,上海200030 [2]晋城矿务局凤凰山矿,山西晋城048006

出　　处：《煤炭科学技术》2000年第9期25-27,共3页Coal Science and Technology

摘　　要：对交流电牵引采煤机使用在倾斜煤层工作面的有关问题进行了分析和探讨 ,并提出某些参数的计算方法。In a conventional frequency converter, a filter capacitance has two fixed terminals and the element of the rectification bridge is a diode. Except the filter capacitance can store a certain instant feedback energy, the converter can not regenerate electricity to make a braking and that is to say that the coal shearer with such converter could not meet the production requirement in a inclined coal mining face. The dynamic braking element of the converter can have a limited braking torque. Due to limitations of the rated power, the braking resistance power and heat radiation result of the braking element, the converter only can be operated in a short period or interim and can be suitable for small inclination or partially inclined longwall face. The converter with four phase limited operation can convert outer energy to electric energy feeding back to electric supply line which can have a regenerated power of braking torque. Therefore the braking torque can be effectively to control the equipment sliding.

关 键 词：采煤机 变频器 倾斜煤层 制动 回馈 交流电牵引 

分 类 号：TD421.6[矿业工程—矿山机电] TD823.212