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

A shunt series wound DC motor driving device, characterized by comprising:

• a shunt series wound DC motor with a rated voltage;
• a DC power supply having a constant voltage that corresponds to the rated voltage;
• and
• a chopper for converting the constant voltage into a variable voltage based on a control signal and providing the variable voltage to the shunt series wound DC,
• wherein, the chopper has m chopping units;
• each of the chopping units is provided with a first power output end, a second power output end and w switching control ends;
• the control signal includes m unit control signals respectively corresponding to the m chopping units and formed according to a preset phase stagger rule
• each of the unit control signals comprises w switching control signals corresponding to the w switch control ends in the corresponding chopping units;
• the w switching control ends are used to correspondingly receive the w switching control signals;
• the m first power output ends of all the chopping units and the m second power output ends of all the chopping units correspondingly form m pairs of power output terminals;
• the shunt series wound DC motor includes:
• m pairs of electric brushes;
• a stator, comprising m pairs of main poles corresponding to the m pairs of brushes and comprising a series exciting winding part, and a shunt exciting winding part;
• and
• a rotor, arranged in the stator and comprising a plurality of armature windings that are connected to each other in a preset connection manner;
• each pair of the main poles includes an S-polarity main pole and an N-polarity main pole;
• two adjacent main poles have different polarities;
• the positions of the two brushes in each pair of the brushes are adjacent;
• each pair of the electric brushes comprises an S-pole corresponding electric brush that corresponds to the S-polarity main pole and an N-pole corresponding electric brush that corresponds to the N-polarity main pole;
• the series exciting winding part contains m series exciting winding units,
• the shunt exciting winding part contains m shunt exciting winding units,
• each of the series exciting winding units is formed by series exciting coils made from an insulated conductor strips composed of metal wires wrapped with an insulating layer on at least a pair of the main poles;
• each of the shunt exciting winding units is formed by respectively shunt exciting coils made from an insulated conductor strips composed of metal wires wrapped with an insulating layer on at least a pair of the main poles;
• the insulated conductor strip in each of the series exciting winding units is provided with one series excitation end and the other series excitation end;
• the insulated conductor strip in each of the shunt exciting winding units is provided with one shunt excitation end and the other shunt excitation end;
• the m shunt excitation ends of all the insulated conductor strips in all the shunt exciting winding units are electrically connected with the m S-pole corresponding brushes in all the electric brushes to form m first electrical connection points;
• at the same time, the m other ends of the insulated conductor strips in all the shunt exciting winding units correspond to the m N-pole corresponding electric brushes in all the electric brushes to form m second electrical connection points;
• or, m other shunt excitation end in all the insulated conductor strips in the shunt exciting winding unit are electrically connected with the m S-pole corresponding electric brushes in all the electric brushes to form m first electrical connection points;
• at the same time, the m one ends of the insulated conductor strip in all the shunt exciting winding units are electrically connected with m N-pole corresponding electric brushes in all the electric brushes to form m second electrical connection points;
• the m series excitation ends of the all insulated conductor strips in all the series exciting winding units are connected with the m first electric connection points respectively and correspondingly;
• at the same time, the other series excitation ends of the insulated conductor strips in all the series exciting winding units form the m first wiring terminals;
• or, the other series excitation ends of the insulated conductor strips in all the series exciting winding units are connected with the m first electrical connection points respectively and correspondingly;
• at the same time, the m series excitation ends of conductor strips in all the series exciting winding units form m first wiring terminals;
• the m second electrical connection points form m second wiring terminals;
• the m first wiring terminals and the m second wiring terminals respectively form m pairs of external wiring terminals;
• the m pairs of external wiring terminals are connected with the m pairs of power output terminals in a one-to-one correspondence;
• the m is a positive integer not less than 2, and the w is 1, 2 or 4.