Synchronous Motor, like induction motor, is a commonly used AC motor. Synchronous motor is the heart of power system, it is a set of rotating and static, electromagnetic and mechanical changes in one motion, electric energy and mechanical energy conversion element, its dynamic performance is very complex, but also greatly affect the dynamic performance of the whole power system dynamic performance. The characteristics are: steady state operation, the rotor speed and the frequency of the grid has a constant relationship between n=ns=60f/p, where f is the grid frequency, P is the pole of the motor, NS is called synchronous speed. If the frequency of the grid is constant, the speed of the synchronous motor is constant at steady state, independent of the magnitude of the load. Synchronous motor is divided into synchronous generator and synchronous motor. The alternator in modern power plant is mainly synchronous generator. Synchronous Motor Stack,Garage Door Motor Core,Garage Door Motor Lamination,Electrical Stell Laminations YUYAO YUANZHONG MOTOR PUNCHING CO.,LTD. , http://www.yuyaoyuanzhong.com
Speaking of brakes, it must be the most essential part of the driving agency. For brake failures, presumably most of the owner's friends are not easy to find, usually we will only notice if there is a brake abnormality or when the intensity drops significantly. And once this situation is really happening at high speeds, it is extremely dangerous. When a person is small, he is slightly injured. If a car is destroyed, the brake problem cannot be overlooked.
In fact, in the course of daily car use, some small signs can be used to determine the brake system has a problem, and often these symptoms are easily overlooked by everyone.
Quickly follow the master and take a look, remove the hidden trouble, know the brake fault, take preventive measures.
Trembling <br> <br> brakes 1. Often this is a situation due to the emergence of a long age of the vehicle. Because of the excessive wear in the car, the flatness of the brake disc surface has been inaccurate to a certain extent. If this happens, it is recommended that you go to a regular brand shop or auto repair factory for maintenance, polishing the brake disc, or directly Replace it.
2. The steering wheel deflects to one side when parking
When the brakes are about to stop, the steering wheel will be deflected to one side. This is what we commonly call the "drift." The main reason for the failure is due to the fact that the left and right cylinders of the brake system do not apply force to the brake pads. However, in the normal driving process, due to the fast rotation speed of the brake disc, the phenomenon of non-uniform action of the sub-pump is not obvious during rapid friction, so we can hardly notice it. However, when the vehicle is parked at a slow speed, such a difference will be obvious. The faster speed wheel will give priority to braking, and the steering wheel will therefore be deflected.
3. Start requires some time before <br> <br> braking force is provided by the engine brake system pressure to push the brake caliper clamping brake disc, so this situation is likely to provide a pressure transmission line appears Loss of pressure has prevented the timely provision of braking force. At this time should be promptly to the formal brand shop or garage repair.
4. When the brake pedal does not return <br> <br> press the brake pedal, the pedal resistance does not rebound, this phenomenon is not brake return. At this point, it is necessary to determine whether the brake fluid is missing, whether the brake cylinder and the pipe joint are leaking, whether the main pump and the sub-pump components are damaged.
The poor braking effect, the brake <br> <br> soft soft brake is abnormal braking force weakened, this failure is usually for three reasons: the first is a master cylinder of a hydraulic cylinder or not, may occur Oil leakage phenomenon; the second is the brake failure, such as brake pads, brake discs; the third is the brake line leaking into the air, if a few feet of the brake when the pedal height slightly increased, and a sense of elasticity, indicating Air infiltrated into the brake line.
When the above five symptoms appear, do not ignore it. It is strongly recommended that the owner promptly go to a regular repair shop or brand shop to make a diagnosis, find problems early, and let the security risks disappear in the bud, so that the car escorts you.
September 06, 2019