The present invention provides a direct current motor, comprising: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, including a plurality of armature windings in a predetermined connection, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole; each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, the field winding part includes k field winding units, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles, and m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2.

The present invention provides a direct current motor, comprising: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, including a plurality of armature windings in a predetermined connection, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole; each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, the field winding part includes k field winding units, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles, and m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2.

The present invention provides a direct current motor, including: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole, two neighboring main poles are different in polarity, the two brushes in each pair of brushes are arranged at neighboring positions, each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, each field winding part includes m field winding units corresponding to the m pairs of main poles, respectively, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around one pair of main poles corresponding to each other, and m is a positive integer not less than 2, and n is 1 or 2.

The present invention provides a direct current motor, including: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole, two neighboring main poles are different in polarity, the two brushes in each pair of brushes are arranged at neighboring positions, each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, each field winding part includes m field winding units corresponding to the m pairs of main poles, respectively, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around one pair of main poles corresponding to each other, and m is a positive integer not less than 2, and n is 1 or 2.

The invention provides a series wound DC motor driving device and electrical equipment. The series wound DC motor driving device provided by the invention comprises a series wound DC motor, a DC power supply and a chopper, wherein the chopper comprises m chopping units; control signals comprise m unit control signals formed according to preset phase stagger rules and corresponding to the m chopping units separately, and each unit control signal comprises w switch control signals corresponding to w switch control ends in the corresponding chopping units; m pairs of power output terminals are formed at m first power output ends and m second power output ends of the chopping units correspondingly, and m pairs of external terminals of the series wound DC motor are connected with m pairs of power output terminals correspondingly one by one; m is a positive integer not smaller than 2, and w is 1, 2 or 4.

The invention provides a series wound DC motor driving device and electrical equipment. The series wound DC motor driving device provided by the invention comprises a series wound DC motor, a DC power supply and a chopper, wherein the chopper comprises m chopping units; control signals comprise m unit control signals formed according to preset phase stagger rules and corresponding to the m chopping units separately, and each unit control signal comprises w switch control signals corresponding to w switch control ends in the corresponding chopping units; m pairs of power output terminals are formed at m first power output ends and m second power output ends of the chopping units correspondingly, and m pairs of external terminals of the series wound DC motor are connected with m pairs of power output terminals correspondingly one by one; m is a positive integer not smaller than 2, and w is 1, 2 or 4.

The invention provides a series wound DC motor driving device and electrical equipment. The series wound DC motor driving device provided by the invention comprises a series wound DC motor, a DC power supply and a chopper, wherein the chopper comprises m chopping units; control signals comprise m unit control signals formed according to preset phase stagger rules and corresponding to the m chopping units separately, and each unit control signal comprises w switch control signals corresponding to w switch control ends in the corresponding chopping units; m pairs of power output terminals are formed at m first power output ends and m second power output ends of the chopping units correspondingly, and m pairs of external terminals of the series wound DC motor are connected with m pairs of power output terminals correspondingly one by one; m is a positive integer not smaller than 2, and w is 1, 2 or 4.

The present invention provides a direct current motor, comprising: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, including a plurality of armature windings in a predetermined connection, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole; each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, the field winding part includes k field winding units, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles, and m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2.

The present invention provides a direct current motor, comprising: a casing; m pairs of brushes fixed within the casing; a stator provided within the casing, including m main poles corresponding to the m pairs of brushes, and n field winding parts; and a rotor provided within the stator, including a plurality of armature windings in a predetermined connection, wherein each pair of main poles includes an S-polarity main pole and an N-polarity main pole; each pair of brushes includes an S-pole corresponding brush corresponding to the S-polarity main pole, and an N-pole corresponding brush corresponding to the N-polarity main pole, the field winding part includes k field winding units, each field winding unit is made up of field coils formed by winding an insulated conductor strip, which is made of a metal wire coated with an insulating layer, around the m pairs of main poles, and m is a positive integer not less than 2, n is 1 or 2, and k is a positive integer not less than 2.

A brush motor includes a stator and a rotor. The rotor includes a rotary shaft with a rotor core and commutator fixed thereto. The commutator includes an insulating base and commutator segments fixed to the insulating base. The stator includes 2P stator poles, where P is an integer greater than 1. The rotor comprises m teeth, where 4P>m>2P, and 2m is an integral multiple of P. The rotor includes a rotor winding, which is a concentrated winding having m first elements and m second elements. Each tooth is wound with one of the first elements and one of the second elements. the m first elements form a plurality of element groups, each having n first elements connected in series, and being connected only to corresponding commutator segments at both ends thereof, where P≥n≥2. Both ends of each second element are connected to corresponding commutator segments.