永磁同步电机的应用前景(外文翻译).rar
永磁同步电机的应用前景(外文翻译),包含中文翻译和英文原文，内容详细完整，建议下载参考！中文： 5800 字英文： 18500字符一、 概述 众所周知，直流电动机有优良的控制性能，其机械特性和调速特性均为平行的直线，这是各类交流电动机所没有的特性。此外，直流电动机还有起动转矩大、效率高、调速方便、动态特性好等特点。优良的...
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永磁同步电机的应用前景(外文翻译)
包含中文翻译和英文原文，内容详细完整，建议下载参考！
中文： 5800 字
英文： 18500字符
一、 概述
众所周知，直流电动机有优良的控制性能，其机械特性和调速特性均为平行的直线，这是各类交流电动机所没有的特性。此外，直流电动机还有起动转矩大、效率高、调速方便、动态特性好等特点。优良的控制特性使直流电动机在70年代前的很长时间里，在有调速、控制要求的场合，几乎成了唯一的选择。但是，直流电动机的结构复杂，其定子上有激磁绕组产生主磁场，对功率较大的直流电动机常常还装有换向极，以改善电机的换向性能。直流电机的转子上安放电枢绕组和换向器，直流电源通过电刷和换向器将直流电送入电枢绕组并转换成电枢绕组中的交变电流，即进行机械式电流换向。复杂的结构限制了直流电动机体积和重量的进一步减小，尤其是电刷和换向器的滑动接触造成了机械磨损和火花，使直流电动机的故障多、可靠性低、寿命短、保养维护工作量大。换向火花既造成了换向器的电腐蚀，还是一个无线电干扰源，会对周围的电器设备带来有害的影响。电机的容量越大、转速越高，问题就越严重。所以，普通直流电动机的电刷和换向器限制了直流电动机向高速度、大容量的发展 ......
I. Introduction
As we all know, the DC motor has excellent control performance, its mechanical properties and characteristics are parallel to the straight line speed, this is not all the characteristics of AC motors. In addition, DC motors have high starting torque, high efficiency, speed convenient, and good dynamic characteristics. Excellent control feature allows the DC motor in the 70's a long time ago, in a speed control requirements of the occasion, almost became the only option. However, the DC motor complex structure, the stator excitation windings produces a main magnetic field, a large DC motor on the power often also equipped with a reversing polarity, to improve the motor 's commutation performance. Placed on the rotor DC motor armature winding and commutator, brushes and commutator DC power to direct current through the armature windings and convert it into the armature windings of the alternating current, namely, mechanical current reversing. Complex structure limits the DC motor and further reduce the size and weight, especially brush and commutator sliding contacts, mechanical wear and spark so much the fault of DC motor, low reliability, short life, service and maintenance work large. Caused the spark for both commutator electric corrosion, or a source of radio interference, electrical equipment will be brought around the harmful effects. The greater capacity of the motor, the higher the speed, the problem is more severe. Therefore, the normal DC motor brush and commutator limits the DC motor to the high-speed, high-capacity development.
In the AC line, it is also widely used in the AC induction motor to drag the work machine. AC induction motor has a simple structure, reliable, long life, low cost, service and maintenance easy. However, compared with the DC motor, speed performance is poor, a small starting torque, overload and low efficiency. Take rotating magnetic field generated reactive power draw from the grid, so power factor is low, particularly at light loads, this large increase in the line and power loss. A long time, does not require speed of occasions, such as fans, pumps, general machine tools the drive, the induction motor in a dominant position, of course, this type of drag, the virtually lost a lot of ......
包含中文翻译和英文原文，内容详细完整，建议下载参考！
中文： 5800 字
英文： 18500字符
一、 概述
众所周知，直流电动机有优良的控制性能，其机械特性和调速特性均为平行的直线，这是各类交流电动机所没有的特性。此外，直流电动机还有起动转矩大、效率高、调速方便、动态特性好等特点。优良的控制特性使直流电动机在70年代前的很长时间里，在有调速、控制要求的场合，几乎成了唯一的选择。但是，直流电动机的结构复杂，其定子上有激磁绕组产生主磁场，对功率较大的直流电动机常常还装有换向极，以改善电机的换向性能。直流电机的转子上安放电枢绕组和换向器，直流电源通过电刷和换向器将直流电送入电枢绕组并转换成电枢绕组中的交变电流，即进行机械式电流换向。复杂的结构限制了直流电动机体积和重量的进一步减小，尤其是电刷和换向器的滑动接触造成了机械磨损和火花，使直流电动机的故障多、可靠性低、寿命短、保养维护工作量大。换向火花既造成了换向器的电腐蚀，还是一个无线电干扰源，会对周围的电器设备带来有害的影响。电机的容量越大、转速越高，问题就越严重。所以，普通直流电动机的电刷和换向器限制了直流电动机向高速度、大容量的发展 ......
I. Introduction
As we all know, the DC motor has excellent control performance, its mechanical properties and characteristics are parallel to the straight line speed, this is not all the characteristics of AC motors. In addition, DC motors have high starting torque, high efficiency, speed convenient, and good dynamic characteristics. Excellent control feature allows the DC motor in the 70's a long time ago, in a speed control requirements of the occasion, almost became the only option. However, the DC motor complex structure, the stator excitation windings produces a main magnetic field, a large DC motor on the power often also equipped with a reversing polarity, to improve the motor 's commutation performance. Placed on the rotor DC motor armature winding and commutator, brushes and commutator DC power to direct current through the armature windings and convert it into the armature windings of the alternating current, namely, mechanical current reversing. Complex structure limits the DC motor and further reduce the size and weight, especially brush and commutator sliding contacts, mechanical wear and spark so much the fault of DC motor, low reliability, short life, service and maintenance work large. Caused the spark for both commutator electric corrosion, or a source of radio interference, electrical equipment will be brought around the harmful effects. The greater capacity of the motor, the higher the speed, the problem is more severe. Therefore, the normal DC motor brush and commutator limits the DC motor to the high-speed, high-capacity development.
In the AC line, it is also widely used in the AC induction motor to drag the work machine. AC induction motor has a simple structure, reliable, long life, low cost, service and maintenance easy. However, compared with the DC motor, speed performance is poor, a small starting torque, overload and low efficiency. Take rotating magnetic field generated reactive power draw from the grid, so power factor is low, particularly at light loads, this large increase in the line and power loss. A long time, does not require speed of occasions, such as fans, pumps, general machine tools the drive, the induction motor in a dominant position, of course, this type of drag, the virtually lost a lot of ......
