| With the development of economy, people living standard rise, cars became necessities ofpeople’s life. For the safety performance of the car also has more stringent requirements.Traditional electrical fuel pump because of its easy to loss, short service life, unsafe, lowreliability, can not meet the needs of consumers for safe and reliable cars.To solve these practical problems, combined with Ansoft software to design a brushlessDC motor for fuel pump. Brushless structure eliminates the sparks cased by the brush andcommutator, and improves the security and reliability of the pump, and increase the servicelife of the fuel pump. For gasoline and methanol gasoline is corrosive, reduce the service lifeof motor, designed a canned motor for fuel pump, shielding structure can prevent the motorstator and windings do not corrode, further improve the security and reliability. Petrol is verysensitive to the temperature; the temperature field is simulated and analyzed for the cannedbrushless DC motor for fuel pump use ofAnsys.BLDC rotor position detection is divided into position sensor and no position sensor.Theposition sensors work reliability not guaranteed.sensorless usually adopt detect backelectromotive force, but the test system is very complex. In view of the fuel pump singleworking status, and load stable open loop control method is put forward. Using the Ansoftsoftware simulation the control signal in the starting process. Using the control signal obtainedfrom the simulation control the BLDC for fuel pump. Avoid the position detection and EMFdetection.According to the theory of open loop control simulation the control signal for BLDC.making BLDC motors and experimenst. The experimental results show that the theory of openloop control is practical and effective for work status of a single motor. |
