Patent TW-202110045-A (TW)
Title: A brush-less dc dynamo and a vehicle comprising the same
Inventor: CHANG CHUN-JONG
IPC: H02K29/06
Filed: 2020-03-27
Abstract: The present invention discloses a brushless DC generator. The brushless direct current generator comprises the following: an annular armature unit, the L recesses of first armature conductors arranged one behind the other and spaced apart, the first armature conductors of the first recess being spatially adjacent to the first armature conductors of the L-th recess and L being a natural number, and spaced apart L recesses of second armature conductors, which are arranged adjacent to the first armature conductors, the second armature conductors of the first recess being arranged spatially adjacent to the second armature conductors of the L-th recess; a magnet unit arranged in the annular armature unit, the magnet unit having N pairs of magnetic poles and N being a natural number and the magnet unit being controllably rotatable relative to the annular armature unit, each magnetic pole corresponding to the S recesses in the annular armature unit and S is a natural number and S ≥ 2, and wherein each pair of magnetic poles faces the M recesses in the annular armature unit and M is a natural number and M = 2S and L = M * N; a pair of external electrodes having a first polarity electrode and a second polarity electrode whose polarities are opposite; a control unit comprising M first control switches and M second control switches; and a logic unit electrically connected to the control unit, which detects the position of the magnet unit and then outputs a logic signal to the control unit in order to control the short circuit or the open circuit in the respective first and second control switches; wherein the first armature conductor and the second armature conductor can be divided into M stages of armature coil groups connected in series with one another in the forward direction, and the armature coil group of the P-th stage of all first armature conductors of the P1-th Recess that meet 1 ≤ Q ≤ N, and all second armature conductors of the P2-th recess that meet 1 ≤ Q ≤ N, which are connected in series or in parallel, where P1=1+{[P-1+(M*(Q-1))]/L remainder} is, P2=1+{[P-1+(M*(Q-1))+S]/L remainder} is, P, Q , S are all natural numbers and 1 ≤ P ≤ M, 1 ≤ Q ≤ N,1 ≤ P1 ≤ L,1 ≤ P2 ≤ L; wherein the first first control switch is arranged between the first polarity electrode and the node connected in series with the armature coil group of the first stage and the armature coil group of the M-th stage, and the (i)-th first control switch is arranged between the first polarity electrode and the with the armature coil group of the (i-1)-th stage and the armature coil group of the (i)-th stage is arranged in series node and the first second control switch between the electrode of the second polarity and that with the armature coil group of the first stage and the armature coil group of (M)-th stage is arranged in series node and the (i)-th second control switch between the electrode of the second polarity and that with the armature coil group of the (i-1)-th stage and the armature coil group of the (i)-th stage is arranged in series nodes and i is a natural number and 2 ≤ i ≤ M; wherein in the basic operating mode of the brushless DC generator only one of the first control switches and one of the second control switches are short-circuited in the same operating time, wherein when the first control switch is short-circuited, the (1 + S)-th second control switch is short-circuited; wherein, when 2 ≤ i ≤ S, the (i)-th first control switch is short-circuited and the (i + S)-th second control switch is short-circuited; wherein, when i = S + 1, the (i)-th first control switch is short-circuited and the first second control switch is short-circuited; wherein, if S+1 > i ≤ M, the (i)-th first control switch is short-circuited and the (i-S)-th second control switch is short-circuited; wherein, when the brushless DC generator is switched from one basic operating mode to the next basic operating mode and is in a transition mode, in the brushless DC generator the two adjacent first control switches or the two adjacent second control switches can be short-circuited at the same time instead of the two adjacent first control switches or the two adjacent second control switches cannot be short-circuited at the same time.