Elevator rescue method and system and controller
A controller and elevator technology, applied in electric motors/converter plugs, reduction gears of AC motors, elevators, etc., can solve problems such as poor comfort, high cost, low DC bus voltage and inability to work, and achieve smooth switching, The effect of low hardware cost, improved stability and safety
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] refer to figure 2 , is the elevator rescue method provided by Embodiment 1 of the present invention, and the execution subject of the method is figure 1 In the controller, the implementation process of this method is detailed as follows:
[0041] S101. If it is detected that the input power supply is unavailable, switch the power supply source from the input power supply to a backup power supply, switch the motor into a short-circuit state, and make the car enter a sliding state.
[0042] Cut the motor into the short-circuit state, that is, enter the star-off state. For example, electronic star sealing can be realized by turning off all the upper tubes of the inverter module connected to the motor and turning on all the lower tubes in the inverter module at the same time.
[0043] The method step of this embodiment can be by figure 1 The controller in the elevator is implemented in conjunction with other equipment related to elevator operation (such as inverter modu...
Embodiment 2
[0051] When the input power is available, the backup power (such as battery) and the equipment related to elevator operation (such as inverter module, brake, controller, etc.) step down and take power from the strong DC bus for charging or working. Once the input power supply is unavailable, the elevator will first report a fault and stop the elevator, and the motor will stop at this time until maintenance personnel, or the top-level control software automatically controls, and starts the example of this embodiment. image 3 As shown in the following rescue process, similarly, the execution subject of this method is figure 1 Controller in:
[0052] S201. Control the power supply source to switch from the input power supply to the backup power supply, and the equipment related to elevator operation obtains power from the backup power supply to work. This can be achieved by the controller controlling the input switching of the weak current DC bus to the backup power supply.
...
Embodiment 3
[0075] refer to Figure 4 , based on the same inventive concept, this embodiment discloses a controller, including:
[0076] The car rolling control unit is used to control the power supply source to switch from the input power supply to the backup power supply when it is detected that the input power supply is unavailable, cut the motor into a short circuit state, and make the car enter the car rolling state;
[0077] The open-loop control unit is used to remove the short-circuit state of the motor after the car enters the sliding state for a preset time, and perform open-loop control on the motor, so that the inverter module outputs to the motor according to a preset strategy Voltage; wherein, after the motor receives the voltage output by the inverter module, it uses the energy generated by the car to charge the energy storage element on the high-current DC bus;
[0078] A closed-loop control unit, configured to perform closed-loop control on the motor when it is detected ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More