University of Shanghai for Science and Technology

Aijuan Jin

Shaolong Li

The present invention provides a shunt wound direct-current (DC) motor driving device and electrical equipment. The shunt wound DC motor driving device provided by the present invention includes a shunt wound DC motor, a DC power supply, and a chopper that converts a constant voltage into a variable voltage based on a control signal and provides the variable voltage for the shunt wound DC motor. The chopper is provided with m chopping units; the control signal includes m unit control signals that respectively correspond to the m chopping units and are formed according to a preset phase stagger rule; each of the unit control signals includes w switching control signals that correspond to w switching control ends in the corresponding chopping units; m first power output ends of all the chopping units and m second power output ends of all the chopping units respectively correspondingly form m pairs of power output terminals; and m pairs of external wiring terminals of the shunt wound DC motor are connected with the m pairs of power output terminals in a one-to-one correspondence manner, wherein m is a positive integer of being not less than 2; and w is 1, 2 or 4.

Shunt wound DC motor driving device and electrical equipment

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.

Series wound direct-current motor driving device and equipment

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.

Direct current motor

The present invention provides a series shunt wound direct-current (DC) motor driving device and electrical equipment. The series shunt wound DC motor driving device provided by the present invention includes a series shunt wound DC motor, a DC power supply and a chopper. The chopper is provided with m chopping units; a control signal includes m unit control signals that respectively correspond to the m chopping units and are formed according to a preset phase stagger rule; each of the unit control signals includes w switching control signals that correspond to w switching control ends in the corresponding chopping units; m first power output ends of all the chopping units and m second power output ends of all the chopping units respectively correspondingly form m pairs of power output terminals; and m pairs of external wiring terminals of the series shunt wound DC motor are connected with the m pairs of power output terminals in a one-to-one correspondence manner, wherein m is a positive integer of being not less than 2; and w is 1, 2 or 4.

Series shunt wound DC motor driving device and equipment

The present invention provides a shunt series wound direct-current (DC) motor driving device and electric equipment. The shunt series wound DC motor driving device provided by the present invention includes: a shunt series wound DC motor; a DC power supply; and a chopper, wherein the chopper comprises m chopping units, a control signal comprises m unit control signals that respectively correspond to the m chopping units and are formed according to a preset phase stagger rule; each of unit control signals comprises w switching control signals corresponding to w switching control ends in the corresponding chopping units; the m first power output ends of all the chopping units and the m second power output ends of all the chopping units respectively correspondingly form m pairs of power output terminals; the m pairs of external terminals of the shunt series wound DC motor are connected with the m pairs of power output terminals in a one-to-one correspondence manner, wherein m is a positive integer that is not less than 2, and w is 1, 2 or 4.

Shunt series wound direct current (DC) motor driving device and equipment

The invention provides a separately excited direct current motor drive apparatus and electric equipment. The separately excited direct current motor drive apparatus includes: a separately excited direct current motor; a direct current power supply; an armature chopper; and a field chopper, wherein the armature chopper has m armature chopper units, each armature chopper unit has a pair of armature power output terminals and w armature switch control ends, the field chopper has n field chopper units, each field chopper unit has a pair of field power output terminals, the separately excited direct current motor has m pairs of armature external terminals and n pairs of field external terminals, the m pairs of armature external terminals are connected to the m pairs of armature power output terminals in a one-to-one correspondence manner, the n pairs of field external terminals are connected to the n pairs of field power output terminals in a one-to-one correspondence manner, m is a positive integer not less than 2, n is a positive integer not less than 2, and w is 1, 2 or 4.

Separately excited direct current motor drive apparatus and equipment

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.

An electric drive apparatus includes a DC motor for driving the electric device; a DC power source for outputting constant-voltage DC power to the DC motor; and a chopper for converting the constant-voltage DC power into variable-voltage DC power according to a driving signal and providing the variable-voltage DC power to the DC motor. The DC motor has 2j armature winding branches, each of which consists of m windings, 2j&#xd7;m commutator segments connected to the windings, and two brush sets respectively connected to two power line sets of the DC motor and in contact with the commutator segments.

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Shanghai, China

Aijuan Jin