A differential planetary gear compound four-quadrant motor speed control system
A planetary gear and motor speed regulation technology, applied in the field of speed regulation system, can solve problems such as speed regulation range limitation
Active Publication Date: 2019-04-16
HOHAI UNIV
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Problems solved by technology
Among them, hydraulic speed regulation and permanent magnet speed regulation are stepless speed regulation systems, but there are slip losses
Planetary gear speed regulation is stepped speed regulation, and the speed regulation range is limited
Method used
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[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.
[0042] Such as figure 1 and figure 2 As shown, a differential planetary gear compound four-quadrant motor speed control system includes a differential planetary gear 1 , a four-quadrant motor 2 , a four-quadrant inverter 3 , a drive motor 4 and a load 5 .
[0043] Such as figure 2 As shown, the four-quadrant motor includes a stator 21 , a coil 22 , a permanent magnet 23 and a motor rotor core 24 .
[0044] The outer surface of the rotor core of the motor is evenly distributed with several permanent magnets along the circumference, the stator is coaxially sleeved on the outer circumference of the rotor core of the motor, and there is a radial gap between the stator and the rotor core of the motor.
[0045] The stator is evenly arranged with several stator slots along the circumferential direction, each stator slot is wou...
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The invention discloses a composite speed regulation system with a differential planet gear and a four-quadrant motor. The composite speed regulation system comprises the differential planet gear, thefour-quadrant motor, a driving motor and a load, wherein the four-quadrant motor comprises a motor rotor core, the differential planet gear comprises a plurality of differential bevel gears which areuniformly arranged on an internal circumferential surface of the motor rotor core, each differential bevel gear is engaged with a driving bevel gear and a driven bevel gear, and the four-quadrant motor is electrically connected with the driving motor. By controlling rotational speeds of the motor rotor core, the driving motor and the load and setting a state of the four-quadrant motor, the functions of full torque transferring of the driving motor, power generation feedback and speed increasing and adjustment of the load can be achieved; and after the structure is employed, the torque of a differential external gear is adjusted by adjusting a working state of the four-quadrant motor, torque allocation of the four-quadrant motor and the load is achieved by the differential planet gear, energy output of the load is adjusted, so that abundant energy of load equipment is recycled, and the purpose of energy saving of a transmission system is achieved.
Description
technical field [0001] The invention relates to a speed regulation system, in particular to a differential planetary gear compound four-quadrant motor speed regulation system. Background technique [0002] Existing energy-saving speed regulation systems mainly include frequency conversion speed regulation, liquid couple speed regulation, permanent magnet speed regulation and planetary gear speed regulation. However, the above-mentioned speed control system also has the following problems: [0003] 1. Frequency conversion speed regulation is electronic speed regulation, which has high requirements on the environment, and the cost is relatively high in high-power (MW level) transmission systems. [0004] 2. Liquid couple speed regulation is hydraulic speed regulation, which is similar to permanent magnet speed regulation and planetary gear speed regulation, and both belong to transmission system speed regulation. Among them, hydraulic speed regulation and permanent magnet sp...
Claims
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IPC IPC(8): H02K7/116H02K7/20H02P23/06
Inventor 金平焦蔚然高赫刘丽凌洁瑶周柳清
Owner HOHAI UNIV