启动转矩

直流无刷电机（BLDCM）因为具有低压特性好，转矩过载能力强，启动转矩大，启动电流小等优点而得到了广泛的应用。

Brushless DC motor ( BLDCM ) is used widely for the reason that it have many advantages of good low-voltage performance , strong torque overload capacity , great starting torque and low starting current .

高启动转矩电机技术在异步电机转子改造中的应用

Application of High Starting Torque Motor Technology During Asynchronous Motor Retrofit

直流力矩电机的优点是调速性能好，启动转矩大。

The advantages of DC motor is good speed adjustment features and large starting torque .

高效率，高可靠性，启动转矩高；

High efficiency and high reliability .

文中利用本法计算了同步电动机的异步启动转矩特性。

This method has been used to calculate the speed-torque characteristics of a synchronous motor during asynchronous starting .

传统的V/F（恒压频比）控制又存在启动转矩小的缺点，不能够满足要求。

Traditional V / F control ( Constant voltage frequency ratio ) can not meet the requirements because of small starting torque disadvantage .

适当增加铁心长度可以有效提高电机效率和功率因数，但会导致启动转矩倍数和最大转矩倍数减小。

Increasing core length properly can raise motor efficiency and power factor , but it will reduce locked-rotor torque ratio and breakdown torque ratio .

实验结果证明，该控制方案启动转矩大，电流冲击小，启动速度非常平稳。

The result shows that this control strategy has many advantages such as small current impact , large starting torque and very smooth starting speed .

通过调节启动转矩，启动中可以实现低速启动、频繁启动和软停止，而且损耗小，控制精确。

It , characterized as little wastage and precise control , can also obtain slow start , frequent start and soft halt by regulating start-up torque .

文中还讨论了其启动转矩的确定，定、转子驱动电源的计算等问题。

Finally , the problem to determine the maximum starting torque and to calculate the exciting source of the stator and rotor of the machine are discussed .

因其结构简单，鲁棒性好，启动转矩大及调速范围宽等特点，日益受到国内外学者的关注。

More and more scholars ' attention in the world are attracted because of its simple structure , high robustness , high pull-in torque and large adjustable-speed scale .

永磁无刷直流电机凭借其结构简单、运行可靠、启动转矩大、调速性好等优点，被越来越多地应用在电动车领域。

Permanent magnet brushless dc motor with its simple structure , reliable operation , good start torque and speed , etc , has been used in electric vehicles increasingly .

针对数控车床采用变频调速时，低速启动转矩低的实际问题，采取V/f控制方式是解决这一问题的有力措施。

Being directed against low torque under low speed start for NC lathe converter speed regulation , the V / f control is the way for solving this problem . 〔

单相串励电动机由于启动转矩大、转速高、体积小等一系列的特点，在电动工具、家用电器和吸尘器上获得了十分广泛的应用。

Single-phase series motors are widely used in many fields , for example , in power tools , home appliances and vacuum because of their high starting torque , high speed and small volume .

直流伺服电动机具有优良的调速特性，调速平滑、简单，具有较大的启动转矩和良好的启、制动性能以及能在较大范围内实现精度、速度和位置控制。

DC servo motor has excellent speed control characteristics smooth and simple . It has strong starting torque and excellent starting and braking performance . It can control a large range of accuracy , speed and position .

开关磁阻电机恰好满足上述要求，而且相对于异步电机而言、开关磁阻电机启动转矩大、启动电流小，可以有效地减少启动时对电网的冲击。

The switched reluctance motor is just to meet these requirements , and relative to the asynchronous motor , the switched reluctance motor has bigger starting torque and smaller starting current , and it can reduce the impact of the start-up current on power .

永磁无刷直流电机作为电动汽车驱动电机，具有启动转矩大、过载能力强、效率高、结构简单、体积小、不易发生故障的优点，非常适合作为电动汽车的驱动。

Brushless DC motor using as electric car drive motor have lots of advantages , like large starting torque , strong overload capacity , high efficiency , simple structure , small size , easily break down and so on , therefore it is very suitable for driving electric cars .

利用Hilbert-Huang变换中经验模态分解（EMD）方法对启动电磁转矩信号进行了分解，得到若干本征模态函数（IMF）。

The startup electromagnetic torque signal is decomposed into several intrinsic mode function ( IMF ) with empirical mode decomposition ( EMD ) based on the Hilbert - Huang Transformation .

数控车床变频调速低速启动时转矩提升的设计

Design of Torque Lifting under Low Speed Start for NC Lathe Converter Speed Regulation

该文提出了一种基于感应电机启动电磁转矩信号的转子断条故障诊断新方法。

A new method based on the startup electromagnetic torque signal is presented to diagnose broken rotor bars fault in induction machines .

采用模糊逻辑选择逆变器的开关状态.有效地提高了系统在启动和转矩给定突变时的转矩响应。

Fuzzy logic is used for choosing the switching states . which improves the electric torque response of the system effectively during the start-up and a step change in command torque .

利用复值小波变换中的小波脊线提取出启动电磁转矩中故障特征在电机启动过程中的频率变化规律，检测出转子断条故障。

The fault characteristic torque frequency variation during the startup can be extracted using the wavelet ridge of the complex continuous wavelet transformation , which can be used to identify broken rotor bars fault .

同步电动机异步全压启动过程的转矩分析

Torque Analysis of a Synchronous Motor during Asynchronous Start with Total Voltage

针对现场实际存在的问题，从系统的安全性、启动性能、转矩特性、动态特性和经济性等方面进行了计算机仿真分析。

To solve existing problems in the field , computer simulation analyses are completed on the system 's safety , starting function , toque characteristic , dynamic characteristic as well as economical efficiency consideration .

该方案是在原来两电平逆变器的基础上增加一个B00st电路，从而实现了十二电压矢量控制，以使异步电动机的电流及转矩脉动减小，并且对启动方法和转矩调节方法进行了改进。

On the basis of two-level inverter , a Boost circuit was added to achieve twelve-voltage vector control and decrease the torque ripple and current ripple . Moreover , the method of startup and torque adjustment had been improved .

本论文计算分析了在基频以下、以恒压频比方式供电下，变频调速时普通交流异步电动机启动电流、转矩的变化规律，并提出了根据电动机负载确定其最佳启动频率范围的方法。

We calculate the startup current and torque of common induction motor when it works under constant V to F and in the frequency less than industry frequency , also we put forward the method that confirm the optimal startup frequency of common induction motors according to the load .

得出了负载转矩与电流过载倍数、负载转矩与启动时间、负载转矩与断相电流的关系曲线。

The relations between load torque and overload current , load torque and staring time , load torque and current of phase failure are given .

该方法具有启动电流小、启动转矩大、启动平滑、运行稳定、控制效果好的特点。

It has many advantages such as small starting current , heavy starting torque , stable starting running and good control effect .

通过启动特性分析，提出了提高电机启动时异步转矩的办法。

The ways to improve asynchronous torque during motor starting process are given by analysis the start characteristic .

优点–在发动机启动前，通过电动发电机的转速提升来获得发动机的启动转矩，从而改善了油耗情况。

ADVANTAGE-The torque for engine start-up is produced by raising the rotation speed of the motor generator prior to engine start , improving fuel consumption .