Series shunt wound DC motor driving device and equipment

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

• a series shunt wound DC motor having a rated voltage;
• a DC power supply having a constant voltage that corresponds to the rated voltage;
• and
• a chopper that converts the constant voltage into a variable voltage based on a control signal and provides the variable voltage for the series shunt wound DC motor,
• wherein the chopper is provided with 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 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 the unit control signals comprises w switching control signals that correspond to the w switching control ends in the corresponding chopping units;
• the w switching control ends are used for correspondingly receiving the w switching control signals;
• 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;
• the series shunt wound DC motor comprises:
• m pairs of electric brushes;
• a stator, comprising m pairs of main poles corresponding to the m pairs of electric brushes and further comprising a series exciting winding part, and a shunt exciting winding part;
• and
• a rotor that is arranged in the stator and comprising a plurality of armature windings connected in a one-to-one correspondence manner in a preset connection manner;
• each pair of the main poles comprises an S-polarity main pole and an N-polarity main pole;
• two adjacent main poles have different polarities;
• two electric brushes in each pair of electric brushes have adjacent positions;
• 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 comprises m series exciting winding units;
• the shunt exciting winding part comprises m shunt exciting winding units;
• each of the series exciting winding units is formed by respectively making series exciting coils from insulated conductor strips composed of metal wires coated with insulating layers on at least one pair of corresponding main poles;
• each of the shunt exciting winding units is formed by respectively making shunt exciting coils from insulated conductor strips composed of metal wires coated with insulating layers on at least one pair of corresponding 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 series excitation ends of the insulated conductor strips in all the series exciting winding units are electrically connected with m S-pole corresponding electric brushes in all the electric brushes;
• or the m series excitation ends of the insulated conductor strips in all the series exciting winding units are electrically connected with m N-pole corresponding electric brushes in all the electric brushes;
• the m other series excitation ends of the insulated conductor strips in all the series exciting winding units form m first wiring terminals;
• leading-out terminals of the m electric brushes that are not connected with the m series excitation ends form m second wiring terminals;
• the m first wiring terminals and the m second wiring terminals respectively correspondingly form m pairs of external wiring terminals;
• the m pairs of external wiring terminals are connected with m pairs of power output terminals in a one-to-one correspondence manner;
• the m shunt excitation ends of the insulated conductor strips in all the shunt exciting winding units are connected with the m first wiring terminals in a one-to-one correspondence manner;
• meanwhile, the m other shunt excitation ends of the insulated conductor strips in all the shunt exciting winding units are connected with the m second wiring terminals in a one-to-one correspondence manner;
• or, the m other shunt excitation ends of the insulated conductor strips in all the shunt exciting winding units are connected with the m first wiring terminals in a one-to-one correspondence manner;
• and meanwhile, the m shunt excitation ends of the insulated conductor strips in all the shunt exciting winding units are connected with the m second wiring terminals in a one-to-one correspondence manner;
• m is a positive integer of being not less than 2;
• and w is 1, 2 or 4.