Alternating current motor brake gear and control method thereof
A technology of braking device and AC motor, which is applied in the direction of reduction device of AC motor, electric motor/converter plug, etc., can solve the problems of high power consumption, easy heating of the motor, damage to the motor, etc., and achieve the effect of precise braking and braking.
Inactive Publication Date: 2017-05-31
SHENZHEN LYTRAN TECH
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Problems solved by technology
[0003] The method of braking by embedding the brake winding coil inside the AC motor is huge (because the brake winding coil is added inside), the current is not controllable during braking, the motor is prone to heat, damage the motor, and the process and production costs are relatively high. High, the impact of the braking process is large, the power consumption is more, the effect is not ideal, and the safety cannot be guaranteed when the motor stops braking
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[0032] Such as figure 1 As shown, the present invention discloses an AC motor brake device, which includes a main control module 10, a single-phase controllable rectification and voltage stabilization module 20, a brake control module 30, and a motor start-stop control module 40. The main control module 10 is respectively connected with The single-phase controllable rectification and voltage stabilization module 20, the brake control module 30, and the motor start-stop control module 40 are connected, and the single-phase controllable rectification and voltage stabilization module 20 is connected to the brake control module 30, so The motor start-stop control module 40 is connected to the brake control module 30. The single-phase controllable rectification and voltage stabilization module 20 includes a zero-crossing detection circuit 21 and a thyristor chopper connected to the zero-crossing detection circuit 21 Rectifier circuit 22.
[0033] The brake control module 30 includes a...
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The invention provides an alternating current motor brake gear and a control method thereof. The alternating current motor brake gear comprises a main control module, a single-phase controllable commutating and voltage-stabilizing module, a brake control module and a motor start and stop control module, wherein the main control module is respectively connected with the single-phase controllable commutating and voltage-stabilizing module, the brake control module and the motor start and stop control module; the single-phase controllable commutating and voltage-stabilizing module is connected with the brake control module; the motor start and stop control module is connected with the brake control module; and the single-phase controllable commutating and voltage-stabilizing module comprises a zero-cross detection circuit and a silicon controlled rectifier chopping rectifying circuit connected with the zero-cross detection circuit. The brake gear and the control method thereof provided by the invention have the following beneficial effects: the alternating current motor brake gear adopts direct voltage / current for braking with the definite size of a silicon controlled rectifier conduction angle under the control of a single chip microcomputer, so that the direct voltage and current for braking and brake time can be accurately controlled, and thus the safe, reliable and accurate brake effect is achieved.
Description
Technical field [0001] The invention relates to the technical field of commercial mixers or single-phase AC motor braking equipment, in particular to an AC motor braking device and a control method thereof. Background technique [0002] At present, the industry practice of braking brake devices for high-power single-phase AC asynchronous motors is mostly to use the brake winding coil embedded in the AC motor to change the direction of the torque force to achieve braking after energization. [0003] The brake winding coil is embedded inside the AC motor to achieve the method. The product is huge (because the brake winding coil is added inside), the current is not controllable during braking, the motor is easy to heat, damages the motor, the process and the production cost are also relatively high. High, the braking process has a big impact, consumes more power, and the effect is not ideal. The safety of the motor when the motor stops is not guaranteed. Summary of the invention [00...
Claims
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IPC IPC(8): H02P3/24
Inventor 何素勇张楚雄
Owner SHENZHEN LYTRAN TECH