Patent TW-202107831-A (TW)
Title: Multistage driving permanent magnet synchronous motor with variable structure stator
Inventor: HUANG PO-YUAN
IPC: H02P6/08
Filed: 2019-08-02
Abstract: The present invention relates to a novel permanent magnet synchronous motor electromechanical device that can fix current to multistagedly increase the torque of the motor and multistagedly reduce the torque of the motor. A variable structure stator device is installed at the interior of a permanent magnet synchronous motor and a multistage drive switching device is installed at the exterior of the permanent magnet synchronous motor, so as to together form a multistage driving permanent magnet synchronous motor with variable structure stator. The multistage driving permanent magnet synchronous motor with variable structure stator is equipped with an N-pole permanent magnet, an S-pole permanent magnet and a rotating shaft. The variable structure stator device is equipped with a three-pole main coil set and several three-pole sub-coil sets. The multistage drive switching device is equipped with a micro-control switching circuit, and the like. The multistage driving permanent magnet synchronous motor with variable structure stator can use a fixed AC power source (the fixed current) to supply power via the three-pole main coil set and the three-pole sub-coil sets, drive the N-pole permanent magnet and the S-pole permanent magnet to rotate by the electromagnetic action between the three-pole main coil set and the N-pole permanent magnet and between the three-pole main coil set and the S-pole permanent magnet, and further use the rotating shaft to drive the loading work. In addition, the multistage driving permanent magnet synchronous motor with variable structure stator can use the stator magnetic direction multistage change mechanism (forming a multistage drive switching variable structure stator) consisting of the three-pole main coil set, the three-pole sub-coil sets and the micro-control switching circuit to increase the intensity of electromagnetic action between the three-pole main coil set and one of the N-pole permanent magnet and the S-pole permanent magnet and between the three-pole sub-coil sets and one of the N-pole permanent magnet and the S-pole permanent magnet, so as to further promote the torque of the rotating shaft for increasing the torque-rotating work of the motor (the fixed current increases the torque rotation), or to reduce the intensity of electromagnetic action between the three-pole main coil set, the three-pole sub-coil sets and the N-pole permanent magnet, the S-pole permanent magnet and further to lower the torque of the rotating shaft for reducing the torque-rotating work of the motor (the fixed current reduces the torque rotation). And, the current flow of the fixed AC power source is unaffected. Using the present multistage driving permanent magnet synchronous motor with variable structure stator which consists of a permanent synchronous motor, a variable structure stator device and a multistage drive switching device, to make the variable structure stator device and the multistage drive switching device multistagedly increase the torque of the motor and multistagedly reduce the torque of the motor, using the fixed AC power source to supply the power for the permanent magnetic synchronous motor and using the concept of new multistage drive switching variable structure stator and the power supply of the fixed AC power source, the purpose and the electricity using characteristics of the permanent magnet synchronous motor fixing the current to multistagedly increase/reduce a torque driving can be achieved.