Multi-loop power supply debugging auxiliary switch

Abstract

A multi-loop power supply debugging auxiliary switch comprises a shell, and a bridge rectifier circuit, a filter circuit, a microprocessor logic control circuit and an inverter bridge output circuit which are electrically connected are arranged in the shell. The bridge rectifier circuit is used for converting alternating-current single-phase 220V mains supply into direct current, and the filter circuit is used for acquiring a power supply signal with a specific frequency and inhibiting and preventing interference of other power supply signals; the microprocessor logic control circuit is used for adopting a microprocessor to control the high-power insulated gate transistor to switch on and output 380V three-phase alternating current in turn according to a three-phase sine wave mode; the inverter bridge output circuit is used for outputting current; a multifunctional display screen and a remote controller are arranged on the shell; the multifunctional display screen is used for displaying input voltage, current, frequency, three-phase independent output voltage and phase angle parameters; and the remote controller is used for realizing remote control on-off of the multi-loop power supply.

Description

Technical field:

[0001] The utility model relates to a multi-circuit power supply debugging auxiliary switch. Background technology:

[0002] A power supply is a device that converts other forms of energy into electrical energy and provides electrical energy to equipment. It includes DC power supply and AC power supply. Among them, AC power supply has a simple structure, does not have many components, has high reliability, and has strong overload and anti-interference capabilities.

[0003] Generally, during the debugging of a multi-circuit power supply, a debugging auxiliary switch needs to be set to verify the performance of the multi-circuit power supply; however, the existing debugging auxiliary switch lacks protection links on the switch voltage input side and the switch voltage output side, and cannot display the power supply voltage value and phase data accordingly; in a multi-circuit power supply, three-phase power output, single-phase power input, and adjustable output voltage are all indispensable functions, but the existing debugging auxiliary switch lacks integrated control components, and thus cannot perform automated integrated control of the multi-circuit power supply, cannot convert AC single-phase 220V mains power into 380V three-phase power, and cannot use remote control to control the power on and off. Utility model content:

[0004] The embodiment of the present utility model provides a multi-circuit power supply debugging auxiliary switch with a reasonable structural design. Based on the mutual cooperation of multiple types of circuits, protection links can be set on the switch voltage input side and the switch voltage output side respectively, and the corresponding voltage value and phase data can be displayed intuitively and accurately in conjunction with a multi-function display screen. The on and off of the multi-circuit voltage is controlled in the form of remote operation combined with local operation. It has the functions of single-phase power input, three-phase power output, adjustable output voltage, and on-off setting on the output side. At the same time, the microprocessor controls the high-power insulated gate transistor to conduct in turn in the form of a three-phase sine wave to output three-phase alternating current, thereby realizing the conversion of single-phase 220V mains power to 380V three-phase power, solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A multi-circuit power supply debugging auxiliary switch includes a housing, in which an electrically connected bridge rectifier circuit, a filter circuit, a microprocessor logic control circuit and an inverter bridge output circuit are arranged;

[0007] The bridge rectifier circuit is used to convert single-phase 220V AC mains power into DC power. The filter circuit is used to obtain a power signal of a specific frequency to suppress and prevent interference from other power signals. The microprocessor logic control circuit is used to use a microprocessor to control high-power insulated gate transistors to alternately conduct in a three-phase sinusoidal wave manner to output 380V three-phase AC power. The inverter bridge output circuit is used to output current.

[0008] A multifunctional display screen and a remote controller are provided on the housing. The multifunctional display screen is used to display input voltage, current, frequency, three-phase independent output voltage and phase angle parameters; the remote controller is used to realize remote control on and off of multi-circuit power supply.

[0009] Protection components are respectively provided on the switching voltage input side of the bridge rectifier circuit and the switching voltage output side of the inverter bridge output circuit, and the protection components are used to perform overcurrent protection, overvoltage protection and short circuit protection on the input side and output side of the multi-circuit power supply.

[0010] A single-phase current regulating circuit is provided in the housing for regulating the single-phase output current 0-10A.

[0011] The remote controller uses Bluetooth for communication.

[0012] The shell is made of lightweight material and is convenient to carry.

[0013] The utility model adopts the above structure, obtains a power supply signal of a specific frequency through a filtering circuit, and can suppress and prevent interference from other power supply signals; converts AC single-phase 220V mains power into DC power through a bridge rectifier circuit; uses a microprocessor logic control circuit to control high-power insulated gate transistors to alternately conduct in a three-phase sine wave manner to output 380V three-phase AC power; outputs current through an inverter bridge output circuit, and performs overcurrent protection, overvoltage protection and short-circuit protection on the input and output sides of the multi-circuit power supply through protection components, thereby having the advantages of safety, reliability, simplicity and practicality. Description of the drawings:

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 This is the control principle diagram of the utility model.

[0016] Figure 3 This is an electrical schematic diagram of the current output circuit of the present utility model.

[0017] In the figure, 1. housing, 2. multi-function display screen, 3. remote control. Specific implementation method:

[0018] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0019] like Figure 1-3 As shown in , a multi-circuit power supply debugging auxiliary switch includes a housing, in which an electrically connected bridge rectifier circuit, a filter circuit, a microprocessor logic control circuit and an inverter bridge output circuit are arranged;

[0020] The bridge rectifier circuit is used to convert single-phase 220V AC mains power into DC power. The filter circuit is used to obtain a power signal of a specific frequency to suppress and prevent interference from other power signals. The microprocessor logic control circuit is used to use a microprocessor to control high-power insulated gate transistors to alternately conduct in a three-phase sinusoidal wave manner to output 380V three-phase AC power. The inverter bridge output circuit is used to output current.

[0021] A multifunctional display screen and a remote controller are provided on the housing. The multifunctional display screen is used to display input voltage, current, frequency, three-phase independent output voltage and phase angle parameters; the remote controller is used to realize remote control on and off of multi-circuit power supply.

[0022] Protection components are respectively provided on the switching voltage input side of the bridge rectifier circuit and the switching voltage output side of the inverter bridge output circuit, and the protection components are used to perform overcurrent protection, overvoltage protection and short circuit protection on the input side and output side of the multi-circuit power supply.

[0023] A single-phase current regulating circuit is provided in the housing for regulating the single-phase output current 0-10A.

[0024] The remote controller uses Bluetooth for communication.

[0025] The shell is made of lightweight material and is convenient to carry.

[0026] The working principle of the multi-circuit power supply debugging auxiliary switch in the embodiment of the present invention is: based on the mutual cooperation of multiple types of circuits, protection links can be set respectively on the switch voltage input side and the switch voltage output side, and the corresponding voltage value and phase data can be displayed intuitively and accurately in conjunction with the multi-function display screen. The on and off of the multi-circuit voltage is controlled in the form of remote operation combined with local operation. It has single-phase power input, three-phase power output, adjustable output voltage, and the function of setting on and off on the output side. At the same time, the microprocessor controls the high-power insulated gate transistor to output three-phase AC power in turn in the form of a three-phase sine wave, thereby realizing the conversion of single-phase 220V mains power to 380V three-phase power.

[0027] The present application is an instrument output voltage device switch with protection and remote control cut-off, which can be used for debugging and calibration of multi-circuit power supplies. By setting protection components on the switch voltage input side and the switch voltage output side respectively, the input side and output side of the multi-circuit power supply are protected against overcurrent, overvoltage and short circuit; and electrical parameters such as voltage value and phase are displayed at the same time.

[0028] Generally speaking, this application sets up 4 output circuits to meet the actual needs of different application scenarios, and each output circuit has overcurrent protection and remote control cut-off functions.

[0029] In the overall scheme, it mainly includes a housing, in which are arranged electrically connected bridge rectifier circuit, filter circuit, microprocessor logic control circuit and inverter bridge output circuit;

[0030] The bridge rectifier circuit is used to convert single-phase 220V AC mains power into DC power. The filter circuit is used to obtain a power signal of a specific frequency to suppress and prevent interference from other power signals. The microprocessor logic control circuit is used to use a microprocessor to control high-power insulated gate transistors to alternately conduct in a three-phase sinusoidal wave manner to output 380V three-phase AC power. The inverter bridge output circuit is used to output current.

[0031] A multifunctional display screen and a remote controller are provided on the housing. The multifunctional display screen is used to display input voltage, current, frequency, three-phase independent output voltage and phase angle parameters; the remote controller is used to realize remote control on and off of multi-circuit power supply.

[0032] Furthermore, the present application also has the function of simultaneously increasing and decreasing the voltage of three phases and increasing and decreasing the voltage of phases A, B, and C separately, which can be applied to a variety of different application scenarios.

[0033] Preferably, a single-phase current regulating circuit may be provided in the housing for regulating the single-phase output current 0-10A, and simultaneously displaying the corresponding output parameters on the multi-function display screen.

[0034] It should be noted that the shell is made of lightweight materials to achieve lightness as much as possible for easy carrying and use.

[0035] To sum up, the multi-circuit power supply debugging auxiliary switch in the embodiment of the present invention is based on the mutual cooperation of multiple types of circuits, and can set protection links on the switch voltage input side and the switch voltage output side respectively, and cooperate with the multi-function display screen to intuitively and accurately display the corresponding voltage value and phase data, and adopt remote operation combined with local operation to control the on and off of the multi-circuit voltage. It has single-phase power input, three-phase power output, adjustable output voltage, and the function of setting on and off on the output side. At the same time, the microprocessor controls the high-power insulated gate transistor to output three-phase AC power in turn in the form of a three-phase sine wave, thereby realizing the conversion of single-phase 220V mains power to 380V three-phase power.

[0036] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0037] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. Multi-circuit power supply debugging auxiliary switch, characterized by: It includes a housing, in which a bridge rectifier circuit, a filter circuit, a microprocessor logic control circuit and an inverter bridge output circuit are electrically connected; The bridge rectifier circuit is used to convert single-phase 220V AC mains power into DC power. The filter circuit is used to obtain a power signal of a specific frequency to suppress and prevent interference from other power signals. The microprocessor logic control circuit is used to use a microprocessor to control high-power insulated gate transistors to alternately conduct in a three-phase sinusoidal wave manner to output 380V three-phase AC power. The inverter bridge output circuit is used to output current. A multifunctional display screen and a remote controller are provided on the housing. The multifunctional display screen is used to display input voltage, current, frequency, three-phase independent output voltage and phase angle parameters; the remote controller is used to realize remote control on and off of multi-circuit power supply.

2. The multi-circuit power supply debugging auxiliary switch according to claim 1, characterized in that: Protection components are respectively provided on the switching voltage input side of the bridge rectifier circuit and the switching voltage output side of the inverter bridge output circuit, and the protection components are used to perform overcurrent protection, overvoltage protection and short circuit protection on the input side and output side of the multi-circuit power supply.

3. The multi-circuit power supply debugging auxiliary switch according to claim 1, characterized in that: A single-phase current regulating circuit is provided in the housing for regulating the single-phase output current 0-10A.

4. The multi-circuit power supply debugging auxiliary switch according to claim 1, characterized in that: The remote controller uses Bluetooth for communication.

5. The multi-circuit power supply debugging auxiliary switch according to claim 1, characterized in that: The shell is made of lightweight material and is convenient to carry.

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