Disclosed are a variable power motor and an intelligent controller therefor. The motor includes a rotor, a stator, a housing, stator windings and terminals. The stator windings are formed by embedding the same stator core into multiple series windings. Various series nodes of the stator windings, each serving as a power supply terminal with different power, are respectively led out individually. The various series windings of the stator respectively control, by means of the intelligent controller, the switching on and off of multiple switching switches. The soft-start and soft-stop of the motor can be realized, and a load is automatically tracked to regulate the power of the winding during operation, so as to obtain a power-saving effect.

A pole-number-changing rotary electric machine includes: a rotary electric machine; an n-group inverter; and a control unit for controlling the n-group inverter, wherein the control unit controls current phases of a current flowing through stator coils such that a current phase degree of freedom, which is a number of current phases per pole pair controllable by the n-group inverter, is equal to a number of groups na number of phases m/2 at a time of high polarity driving and the number of groups nthe number of phases m at a time of low polarity driving, where the number of groups n is a multiple of 4 and the number of phases m is a natural number of 3 or more and relatively prime to the number of groups n.

A pole-number-changing rotary electric machine includes: a rotary electric machine; an n-group inverter; and a control unit for controlling the n-group inverter, wherein the control unit controls current phases of a current flowing through stator coils such that a current phase degree of freedom, which is a number of current phases per pole pair controllable by the n-group inverter, is equal to a number of groups na number of phases m/2 at a time of high polarity driving and the number of groups nthe number of phases m at a time of low polarity driving, where the number of groups n is a multiple of 4 and the number of phases m is a natural number of 3 or more and relatively prime to the number of groups n.

A motor control method comprises detecting operating parameters of a motor system comprising a plurality of windings, a rotor, a stator magnetically coupled to the rotor and a plurality of power converters connected to the plurality of windings, determining, by a controller, a suitable pole number and a preliminary set of operating variables based upon the operating parameters, reducing operating stresses of the motor system gradually and after reducing the operating stresses, configuring the plurality of power converters so as to adjust the number of poles of the motor system according to the suitable pole number.

A motor control method comprises providing a machine comprising a plurality of windings, a rotor and a stator magnetically coupled to the rotor, coupling a plurality of power converters to the plurality of windings, configuring the plurality of power converters so as to adjust the number of poles of the machine in a low-stress operating mode according to a plurality of operating parameters and after a fault occurs in the machine, configuring the plurality of power converters such that the machine enters a fault tolerant operating mode.

A system comprises a stator magnetically coupled to a rotor and a plurality of conductor assemblies distributed evenly along a perimeter of the device, wherein each conductor assembly is evenly distributed into at least two branches of conductors, and wherein each branch comprising a plurality of conductors, all the branches form a plurality of windings, wherein a winding comprises a positive segment and a negative segment, and wherein each segment has a plurality of branches, and wherein one segment is in more than two conductor assemblies and the plurality of windings is symmetrically divided into a plurality of groups, wherein each group of windings forms a balanced multi-phase system and is connected to a connection bar, and wherein at least two connection bars are isolated from each other.

A motor system comprises a device having a plurality of conductors coupled to a plurality of isolated connection bars, wherein the plurality of conductors is divided symmetrically into a plurality of conductor groups, and all conductors in a conductor group are connected to a connection bar, a first power converter group connected between a first power source and a first conductor group, a second power converter group connected between a second power source and a second conductor group, wherein the first group of conductors and the second group of conductors are configured such that a charge balance between the first power source and a second power source is achieved and a rotor magnetically coupled to a stator.

A device comprises a rotor magnetically coupled to a stator, a plurality of slots for accommodating a plurality of conductors, wherein the plurality of slots is evenly spaced, and each slot is configured to accommodate at least one conductor of the plurality of conductors, and wherein each conductor has a first end and a second end, and wherein the second end is configured to be coupled to a power converter and a plurality of connection apparatuses connected to first ends of the plurality of conductors.

There are disclosed winding configurations for electric machines that employ printed circuit board (PCB) type end winding connections to enable an automatic and faster assembly of the electric machines. The winding configurations provide a compact PCB-type end winding arrangement with an optimal fewer number of turns/bars in the slots of the board to complete the loop of winding connections. The winding configurations have application in three phase or multiple phase inner rotor or outer rotor electric machine topologies

There are disclosed winding configurations for electric machines that employ printed circuit board (PCB) type end winding connections to enable an automatic and faster assembly of the electric machines. The winding configurations provide a compact PCB-type end winding arrangement with an optimal fewer number of turns/bars in the slots of the board to complete the loop of winding connections. The winding configurations have application in three phase or multiple phase inner rotor or outer rotor electric machine topologies