Controller with star sealing function in elevator traction machine system

Abstract

The utility model discloses a controller with a star sealing function in an elevator traction machine system, which comprises a three-phase rectification and pre-charging module, an inversion module, a microprocessor MCU (Microprogrammed Control Unit), a relay driving module, a first relay, a second relay and an IGBT (Insulated Gate Bipolar Translator) driving module, the first relay is connected between a V-phase wire and a W-phase wire, the second relay is connected between the V-phase wire and the W-phase wire, the microprocessor MCU is connected with the relay driving module, the microprocessor MCU controls the first relay and the second relay through the relay driving module, and the relay driving module feeds back the states of the first relay and the second relay to the microprocessor MCU. Satellite sealing and load motor control share a microprocessor MCU and a power supply system, satellite sealing can be conveniently carried out, corresponding communication is not needed, no noise source exists, a relay is adopted in the controller to integrate the satellite sealing function, arrangement is simple, the size is small, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of controllers with star sealing function in elevator hoisting machine system. BACKGROUND

[0002] In the existing elevator hoisting machine system, star sealing is carried out by external contactor, as shown in Figure 1 Significant increase in the cost of control cabinet and line complexity, resulting in reduced reliability, maintenance difficulties, at the same time, through communication with the controller, corresponding cooperation, there may be intermediate transmission interruption or error, resulting in relay control and motor controller cannot be coordinated, causing controller short-circuit damage, contactor closing noise, causing certain influence on the surrounding environment, star sealing through external contactor, need separate box installation, three-phase wiring, high-voltage AC power supply, low-voltage communication and control interaction signal, complex design, space occupation, high cost. SUMMARY

[0003] The utility model aims at providing a kind of controllers with star sealing function in elevator hoisting machine system, solve the technical problem that star sealing through external contactor in prior art, need separate box installation, three-phase wiring, high-voltage AC power supply, low-voltage communication and control interaction signal, complex design, space occupation, high cost.

[0004] The technical scheme of the utility model is realized as follows:

[0005] The application relates to an elevator hoisting machine system controller with a star sealing function, characterized by comprising a three-phase rectification and pre-charging module, an inverter module, a microprocessor MCU, a relay driving module, a first relay, a second relay and an IGBT driving module, wherein the input end of the three-phase rectification and pre-charging module is connected with a three-phase alternating current input end R / S / T of commercial power, the output end of the three-phase rectification and pre-charging module provides high-voltage direct current for the inverter module, the output end of the inverter module is connected with a load motor, the inverter module output is used for supplying power for the load motor through U / V / W three-phase electric wires, the microprocessor MCU outputs a PWM signal to control the inverter module to work through the IGBT driving module, the first relay is connected between the U-phase electric wire and the V-phase electric wire, the second relay is connected between the V-phase electric wire and the W-phase electric wire, the microprocessor MCU is connected with the relay driving module, the microprocessor MCU outputs a control signal to control the first relay and the second relay to be closed or disconnected through the relay driving module, the star sealing function is realized when the relay driving module drives the first relay and the second relay to be closed, the relay driving module feeds back the closed state or the disconnected state of the first relay and the second relay to the microprocessor MCU, and the microprocessor MCU determines whether to drive the inverter module according to the current state of the first relay and the second relay, so that the conflict between the star sealing function and the inverter module is avoided, and the electronic components are prevented from being damaged.

[0006] The output end of the three-phase rectification and pre-charging module is further connected with a voltage detection circuit, and the output end of the voltage detection circuit is connected with the signal input end of the microprocessor MCU.

[0007] The microprocessor MCU is provided with a load foolproof driving function.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] 1.The utility model provides a star seal and load control system, including three -phase rectification and pre -charge module, inverter module, microprocessor MCU, relay drive module, first relay, second relay and IGBT drive module, the input end connection of three -phase rectification and pre -charge module municipal power three -phase alternating current input end R / S / T, and the output end of three -phase rectification and pre -charge module provides high -voltage direct current for inverter module, and the output end of inverter module is connected with load motor, and inverter module output supplies power for load motor through U / V / W three -phase electric wire, and microprocessor MCU output PWM signal controls inverter module work through IGBT drive module, and first relay is connected between U -phase electric wire and V -phase electric wire, and second relay is connected between V -phase electric wire and W -phase electric wire, and microprocessor MCU is connected with relay drive module, and microprocessor MCU output control signal controls first relay and second relay close or open through relay drive module, when relay drive module drives first relay and second relay to close, realizes the function of sealing star, and relay drive module feeds back the closing state or open state of first relay and second relay to microprocessor MCU, and microprocessor MCU decides whether to drive inverter module according to the current state of first relay and second relay, avoids the conflict of sealing star function and inverter module to work simultaneously and causes electronic component damage. Star seal and load control share a microprocessor MCU and power supply system, can conveniently seal star, need not carry out corresponding communication, have no noise source, in addition, the controller internally adopts the relay integrated star seal function, and the arrangement is simple, and the volume is small, and the practicality is high, and the cost is low.

[0010] 2.The other advantages of the utility model are described in detail in the embodiment part of the specification. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 Reference is made to the prior art figure;

[0012] Figure 2 The principle diagram provided by the utility model is shown. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0014] Embodiment one:

[0015] As Figure 2The embodiment shown provides a controller with star sealing function in an elevator hoisting machine system, characterized by comprising a three-phase rectification and pre-charging module, an inverter module, a microprocessor MCU, a relay driving module, a first relay, a second relay and an IGBT driving module, the input end of the three-phase rectification and pre-charging module is connected with a three-phase alternating current input end R / S / T of commercial power, the output end of the three-phase rectification and pre-charging module provides high-voltage direct current for the inverter module, the output end of the inverter module is connected with a load motor, the inverter module output supplies power for the load motor through U / V / W three-phase electric wires, the microprocessor MCU outputs a PWM signal to control the inverter module to work through the IGBT driving module, the first relay is connected between the U-phase electric wire and the V-phase electric wire, the second relay is connected between the V-phase electric wire and the W-phase electric wire, the microprocessor MCU is connected with the relay driving module, the microprocessor MCU outputs a control signal to control the first relay and the second relay to be closed or disconnected through the relay driving module, the star sealing function is realized when the relay driving module drives the first relay and the second relay to be closed, the relay driving module feeds back the closed state or the disconnected state of the first relay and the second relay to the microprocessor MCU, the microprocessor MCU decides whether to drive the inverter module according to the current state of the first relay and the second relay, so as to avoid the conflict between the star sealing function and the inverter module, and to prevent the electronic components from being damaged. The star sealing and the load control share one microprocessor MCU and a power supply system, so that the star sealing can be conveniently performed without corresponding communication, and there is no noise source, in addition, the controller internally adopts the relay integrated star sealing function, so that the arrangement is simple, the volume is small, the practicability is high, and the manufacturing cost is low.

[0016] The output end of the three-phase rectification and pre-charging module is further connected with a voltage detection circuit, and the output end of the voltage detection circuit is connected with the signal input end of the microprocessor MCU, so that whether the direct current bus voltage is stable can be detected.

[0017] The microprocessor MCU is provided with a load foolproof driving, so as to improve the reliability of the controller.

[0018] The working principle of the utility model is described as follows: 1, the initial system is in an electrically inactive state, and the first relay and the second relay are normally closed; 2, when the system is powered, the microprocessor MCU initializes and detects the closed state of the first relay and the second relay; 3, after receiving the elevator host instruction, the closed state of the first relay and the second relay is disconnected, and the state of the first relay and the second relay is detected; 4, according to the closed state of the first relay and the second relay, the elevator host instruction is executed, and normal operation is realized; in the abnormal case, the closed state of the first relay and the second relay does not conform to the preset state, and corresponding protection actions are fed back and performed.

[0019] The above embodiment is a preferred embodiment of the present application, but the embodiment of the present application is not limited thereto, and any change, modification, replacement, combination, simplification, etc. made without departing from the spirit and principle of the present application is an equivalent replacement mode, and all of them are included in the protection scope of the present application.

Claims

1. A controller with a star-sealing function in an elevator traction machine system, characterized in that: The application relates to a three-phase rectification and pre-charging module, an inverter module, a microprocessor MCU, a relay driving module, a first relay, a second relay and an IGBT driving module, wherein the input end of the three-phase rectification and pre-charging module is connected with a three-phase alternating current input end R / S / T of commercial power, the output end of the three-phase rectification and pre-charging module provides high-voltage direct current for the inverter module, the output end of the inverter module is connected with a load motor, the inverter module output is supplied to the load motor through U / V / W three-phase electric wires, the microprocessor MCU outputs a PWM signal to control the inverter module to work through the IGBT driving module, the first relay is connected between the U-phase electric wire and the V-phase electric wire, the second relay is connected between the V-phase electric wire and the W-phase electric wire, the microprocessor MCU is connected with the relay driving module, the microprocessor MCU outputs a control signal to control the first relay and the second relay to be closed or disconnected through the relay driving module, the relay driving module feeds back the closed state or the disconnected state of the first relay and the second relay to the microprocessor MCU, the microprocessor MCU decides whether to drive the inverter module according to the current state of the first relay and the second relay, and the conflict between the star-sealing function and the inverter module is avoided to prevent the electronic components from being damaged.

2. The controller with star seal function in an elevator hoisting machine system according to claim 1, characterized in that: The output end of the three-phase rectification and pre-charging module is also connected with a voltage detection circuit, and the output end of the voltage detection circuit is connected with the signal input end of the microprocessor MCU.

3. The controller with star seal function in an elevator hoisting machine system according to claim 1, characterized in that: The microprocessor MCU is provided with a load foolproof driving function.

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