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Controllable brake unit, brake system and brake method

A braking unit and controller technology, applied in control systems, motor generator control, electrical components, etc., can solve problems such as over-temperature faults, reduce stress, reduce failure rate, improve peak braking and continuous braking. The effect of dynamic power

Inactive Publication Date: 2015-07-15
SHENZHEN HOPEWIND ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is to provide a controllable braking unit, which overcomes the defect of over-temperature failure that may occur in the local independent control mode when the existing braking units are used in parallel
[0008] The second technical problem to be solved by the present invention is to provide a braking system that uses a controllable braking unit to overcome the defect that an over-temperature fault may occur in the local independent control mode when the existing braking units are used in parallel
[0009] The third technical problem to be solved by the present invention is to provide a braking method to overcome the defect that an over-temperature fault may occur in the local independent control mode when the existing braking units are used in parallel

Method used

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  • Controllable brake unit, brake system and brake method
  • Controllable brake unit, brake system and brake method
  • Controllable brake unit, brake system and brake method

Examples

Experimental program
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Embodiment 1

[0078] Such as Figure 10 As shown, the braking system of the present invention includes a master controllable braking unit (its controller is controller 1) and at least one slave controllable braking unit (its controllers are controllers 2, 3...), this embodiment Take two slave controllable brake units as an example for illustration. Only the controller part of the controllable braking unit is shown in the figure, and the braking unit part is not shown.

[0079] The master controllable braking unit can use a type A controller or a type C controller, and the slave controllable braking unit can use a type A controller or a type B controller. The braking units of the master controllable braking unit and the slave controllable braking unit are respectively connected to the positive and negative poles of the DC bus of the equipment.

[0080] The master controllable braking unit adopts the following structure to control the synchronous actions of the slave controllable braking un...

Embodiment 2

[0084] Such as Figure 11 As shown, the braking system of this embodiment includes a master controllable braking unit (its controller is controller 1) and at least one slave controllable braking unit (its controllers are controllers 2, 3...), this embodiment Example Take two slave controllable brake units as an example to illustrate. Only the controller part of the controllable braking unit is shown in the figure, and the braking unit part is not shown.

[0085] The master controllable braking unit can use a type A controller or a type C controller, and the slave controllable braking unit can use a type A controller or a type B controller. The braking units of the master controllable braking unit and the slave controllable braking unit are respectively connected to the positive and negative poles of the DC bus of the equipment.

[0086] The master controllable braking unit adopts the following structure to control the synchronous actions of the slave controllable braking uni...

Embodiment 2

[0094] The braking method of the present embodiment includes the following steps:

[0095] 1. The control braking unit acts according to the control trigger conditions to become a controllable braking unit, and the braking units of each controllable braking unit are respectively connected to the positive and negative poles of the DC bus of the equipment.

[0096] 2. Set one controllable braking unit as the master controllable braking unit, and set at least one controllable braking unit as the slave controllable braking unit.

[0097] 3. The master controllable braking unit controls the synchronous action of the slave controllable braking units as follows: the master controllable braking unit outputs the feedback signal of the working state of the braking unit as the input control signal of the first slave controllable braking unit, the first The first slave controllable braking unit takes the working state feedback signal of its braking unit as the input control signal of the ...

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PUM

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Abstract

The invention discloses a controllable brake unit, a brake system and a brake method. The controllable brake unit comprises a brake unit and a controller, wherein the brake unit is connected with positive and negative poles of a DC bus of equipment; the controller comprises a control signal input end, a power semiconductor device driving signal output end and a brake unit working condition feedback signal end and realizes driving control through connection of a driving signal output end with a brake unit driving end. The brake system comprises a host controllable brake unit and at least one slave controllable brake unit, wherein the host unit is an A type or C type controller, and each slave unit is an A type or B type controller, brake units of the host and slave units are connected with the positive and negative poles of the DC bus respectively, and the host unit controls the at least one slave unit to act synchronously. The brake method comprises steps as follows: controlling the brake units to be the controllable brake units; setting the host unit and the at least one slave unit; enabling the host unit to control the at least one slave unit to act synchronously. The problem of dispersion of the brake units is solved, brake units connected in parallel act synchronously, and the failure rate of the brake units is decreased.

Description

technical field [0001] The present invention relates to a controllable braking unit for quickly braking the motors of high-power equipment such as converters and frequency converters, and also relates to a braking system composed of the plurality of controllable braking units and the use of the braking system. A method for quickly braking a motor of a high-power equipment. Background technique [0002] The braking unit is an important part to realize the rapid braking of the motor or the reliable operation of the displacement load in high-power equipment such as converters or frequency converters. When the inverter decelerates to stop, its motor is in the state of power generation, which shortens the system speed drop time, accelerates energy feedback, and the DC bus voltage of the inverter rises rapidly. If the feedback energy is not consumed quickly, it may cause DC bus overvoltage Wait for failure. The main function of the braking unit is to quickly convert the feedback...

Claims

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Application Information

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IPC IPC(8): H02P3/18H02P3/22
Inventor 廖荣辉吴志猛文熙凯周党生
Owner SHENZHEN HOPEWIND ELECTRIC CO LTD