Below as an introduction to the four advantages of brushless dc motor controller, let everybody controller of brushless dc motor have a clearer understanding.
1, the brushless dc motor controller because has the characteristics of a dc motor controller, also drives the frequency change device, so also known as dc converter, dc brushless motor controller operation efficiency, and low speed torque and rotational speed precision and so on is more good than any of the control technology of inverter, the brushless dc motor based on automatic control type to perform, so not as frequency control of motor speed under overloading starting of synchronous motor controller as plus startup winding on the rotor, also won't generate oscillation and step out when load mutation.
2, permanent magnet brushless dc motor controller, now rare earth ndfeb material using high magnetic energy product. As a result, the volume of rare earth permanent magnet brushless motor than three-phase asynchronous motor with capacity reduces a frame number.
3, brushless dc motor controller of high efficiency, high efficiency area is big, the power and torque density, high power factor (COSΦ)Close to 1, the system efficiency> 90%, the permanent magnet brushless dc motor controller in any case the rotor are synchronous operation, ac variable frequency motor is frequency control of motor speed controller, is the speed regulation of frequency conversion brushless dc motor controller, motor controller running under synchronous speed, rotor have neither copper loss and iron loss.
4, brushless dc motor controller has good low voltage characteristic, torque overload characteristic is strong, big start torque, small startup current, etc.
