| 摘要 |
Disclosed is a multiphase brushless DC motor of a concentrated winding type having shunt connection, and a circuit for controlling the same. The brushless DC motor comprises a rotor made up of a permanent magnet with M number of poles, and a stator operating in K number of phases by means of windings wound on N number of teeth, wherein the plurality of windings having the same excitation phases wound on the teeth are each maintained in shunt connection so as to improve driving torque and a rotational speed. Further, in a circuit for applying electric current to the corresponding windings of the stator of a brushless DC motor by switching of power supply according to driving signals by means of a switching section, the switching section includes a plurality of upper switching devices and a plurality of lower switching devices connected with each other in series; the power supply voltages is comprised of one lower power supply voltage for supplying one power supply voltage in common through the lower switching devices and N number of upper power supply voltages for supplying a plurality of power supply voltages in separation through the upper switching devices; and each of the windings is connected between a common joint between the upper and lower switching devices, and a common joint between the lower power supply voltage and the plurality of upper power supply voltages. |
