A Separately Excited DC Motor
A technology of DC motor and DC power supply, applied in the direction of DC commutator, electromechanical device, electrical components, etc., can solve the problems of difficult to deal with detection technology, constraints and influence, influence economic construction and national defense construction, etc., to improve reliability and Safety, improving performance, and the effect of reasonable structural design
Active Publication Date: 2020-12-25
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
At present, the traditional separately excited DC motors used in high-power national defense electric equipment have been difficult to cope with the increasingly advanced detection technology
[0005] Based on the above reasons, the development of separately excited DC motors has been restricted and affected, which has affected economic construction and national defense construction.
Method used
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Embodiment Construction
[0038] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
[0039] figure 1 It is a schematic diagram of the longitudinal section structure of the separately excited DC motor in the embodiment of the present invention;
[0040] figure 2 It is a schematic diagram of a transverse cross-sectional structure of a separately excited DC motor in an embodiment of the present invention; image 3 It is a schematic diagram of the circuit connection of the armature winding and the field winding of the separately excited DC motor of the present invention; Figure 4 It is a schematic diagram of the circuit connection of the armature winding and the field winding of the separately excited DC motor in the embodiment of the present invention; Figure 5 It is a schematic diagram of the single-stack connection of the armature windings of the separately excited DC motor in the embodiment of the present invention....
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The invention provides a separately excited direct current motor. The separately excited direct current motor provided by the invention is connected with an external DC power supply device, has a rated input current, and is characterized by comprising a casing; m pairs of brushes; a stator comprising m pairs of main magnetic poles corresponding to the m pairs of brushes and an exciting winding part; and a rotor arranged in the stator, including multiple armature windings, wherein the excitation winding part comprises n excitation winding units, the n excitation winding units respectively correspond to the n pairs of brushes, each pair of brushes comprises an S-pole corresponding brush and an N-pole corresponding brush, each S pole is electrically connected with one pole of an external direct-current power supply device corresponding to the brush, the N pole corresponds to the brush and is electrically connected with the other pole of the external direct-current power supply device, oneend of each insulating conductor strip is electrically connected with one pole of the external direct-current power supply device, the other end of each insulating conductor strip is electrically connected with the other pole of the external direct-current power supply device, and m and n are positive integers not smaller than 2.
Description
technical field [0001] The invention belongs to the field of DC motors, in particular to a separately excited DC motor. Background technique [0002] The excitation winding and the armature winding of the separately excited DC motor are powered by two power sources respectively, and the excitation current is provided independently, which has nothing to do with the armature current. Therefore, the control of the separately excited DC motor is convenient, and it is easy to realize speed regulation, positive and negative rotation and energy feedback. Widely used in electric forklifts, electric cars, electric sightseeing cars, electric tractors, large machine tool spindle drive systems and ships, etc. [0003] A DC motor is generally used together with a chopper to form a DC motor speed control device. In order to ensure system reliability, the maximum output current of the chopper is generally 2 to 3 times the rated current of the motor. The chopper uses pulse width modulatio...
Claims
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IPC IPC(8): H02K23/12
CPCH02K23/12
Inventor 金爱娟李少龙
Owner UNIV OF SHANGHAI FOR SCI & TECH