Power supply for industrial control equipment

Abstract

The utility model discloses a power supply for industrial control equipment, and relates to the technical field of power supplies, and the power supply comprises a first rectification filtering module, a second rectification filtering module, a first AC / DC converter, a second AC / DC converter, a first isolation output module, a second isolation output module, a first current sharing module, and a second current sharing module. Wherein the first rectifying and filtering module, the first AC / DC converter, the first isolation output module and the first current sharing module are electrically connected in sequence, the input end of the first rectifying and filtering module is connected with alternating current mains supply, and the output end of the first current sharing module is connected with industrial control equipment; the second rectifying and filtering module, the second AC / DC converter, the second isolation output module and the second current sharing module are electrically connected in sequence, the input end of the second rectifying and filtering module is connected with the alternating current mains supply, and the output end of the second current sharing module is connected with the industrial control equipment. The power supply for the industrial control equipment provided by the utility model can support multi-path stable output and adapts to multi-path parallel connection of the power supply.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and in particular to a power supply for industrial control equipment. Background Art

[0002] Industrial Control Equipment refers to equipment used to monitor, control and operate industrial production processes. They are commonly used in the field of industrial automation, including factory production lines, mechanical equipment, instrumentation, etc. The main function of industrial control equipment is to obtain and process real-time production data, and to control and make decisions according to preset rules and algorithms. They can monitor various parameters, such as temperature, pressure, flow, speed, etc., and adjust the parameters and status of the production process in real time based on these data to ensure the safety, efficiency and quality of production.

[0003] Industrial control equipment needs to use power supplies to provide stable electrical energy to drive the various components of the equipment and ensure the normal operation and performance of the equipment. Therefore, the power supply of industrial control equipment is crucial. However, the power supply currently used for industrial control equipment cannot support multi-channel stable output and cannot adapt to multi-channel parallel connection of power supplies. Utility Model Content

[0004] To this end, the present application provides a power supply for industrial control equipment to solve the problem that the prior art cannot support multi-channel stable output and cannot adapt to multi-channel parallel connection of power supplies.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A power supply for industrial control equipment, comprising a first rectifying and filtering module, a second rectifying and filtering module, a first AC / DC converter, a second AC / DC converter, a first isolated output module, a second isolated output module, a first current balancing module and a second current balancing module;

[0007] The input ends of the first rectifier and filter module and the second rectifier and filter module are both electrically connected to the AC mains, the output ends of the first rectifier and filter module and the second rectifier and filter module are respectively electrically connected to the input ends of the first AC / DC converter and the second AC / DC converter, the output ends of the first AC / DC converter and the second AC / DC converter are respectively electrically connected to the input ends of the first isolated output module and the second isolated output module, the output ends of the first isolated output module and the second isolated output module are respectively electrically connected to the input ends of the first current equalizing module and the second current equalizing module, and the output ends of the first current equalizing module and the second current equalizing module are used to be electrically connected to industrial control equipment.

[0008] Preferably, the first AC / DC converter and the second AC / DC converter are forward AC / DC converters or flyback AC / DC converters.

[0009] Preferably, the forward AC / DC converter is a gallium nitride power factor correction converter.

[0010] Preferably, the flyback AC / DC converter is a gallium nitride offline flyback PFC converter.

[0011] Preferably, it further comprises a first fuse and a second fuse, wherein the first fuse is connected in series between the AC mains and the first rectifier and filter module, and the second fuse is connected in series between the AC mains and the second rectifier and filter module.

[0012] Preferably, the first rectifying and filtering module and the second rectifying and filtering module adopt a bridge rectifier circuit.

[0013] Compared with the prior art, this application has at least the following beneficial effects:

[0014] The present application provides a power supply for industrial control equipment, including a first rectifier and filter module, a second rectifier and filter module, a first AC / DC converter, a second AC / DC converter, a first isolated output module, a second isolated output module, a first current equalizing module and a second current equalizing module; wherein the input ends of the first rectifier and filter module and the second rectifier and filter module are both electrically connected to the AC mains, the output ends of the first rectifier and filter module and the second rectifier and filter module are respectively electrically connected to the input ends of the first AC / DC converter and the second AC / DC converter, the output ends of the first AC / DC converter and the second AC / DC converter are respectively electrically connected to the input ends of the first isolated output module and the second isolated output module, the output ends of the first isolated output module and the second isolated output module are respectively electrically connected to the input ends of the first current equalizing module and the second current equalizing module, and the output ends of the first current equalizing module and the second current equalizing module are used to be electrically connected to the industrial control equipment. The present application provides a power supply for industrial control equipment that can support multi-channel stable output and adapt to multi-channel parallel connection of power supplies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0016] Figure 1A circuit principle block diagram of a power supply for industrial control equipment provided in this application.

[0017] Description of reference numerals:

[0018] 1. AC mains; 101. first rectifier and filter module; 102. first AC / DC converter; 103. first isolated output module; 104. first current equalizing module; 2. industrial control equipment; 201. second rectifier and filter module; 202. second AC / DC converter; 203. second isolated output module; 204. second current equalizing module. DETAILED DESCRIPTION

[0019] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0020] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0021] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the purpose of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0022] See also Figure 1 The present application provides a power supply for industrial control equipment, including a first rectifier and filter module 101, a second rectifier and filter module 201, a first AC / DC converter 102, a second AC / DC converter 202, a first isolated output module 103, a second isolated output module 203, a first current equalizing module 104 and a second current equalizing module 204.

[0023] The input ends of the first rectifier and filter module 101 and the second rectifier and filter module 201 are both electrically connected to the AC mains 1, and the output ends of the first rectifier and filter module 101 and the second rectifier and filter module 201 are respectively electrically connected to the input ends of the first AC / DC converter 102 and the second AC / DC converter 202, and the output ends of the first AC / DC converter 102 and the second AC / DC converter 202 are respectively electrically connected to the input ends of the first isolated output module 103 and the second isolated output module 203, and the output ends of the first isolated output module 103 and the second isolated output module 203 are respectively electrically connected to the input ends of the first current equalizing module 104 and the second current equalizing module 204, and the output ends of the first current equalizing module 104 and the second current equalizing module are used to be electrically connected to the industrial control equipment 2.

[0024] The present application provides a power supply for industrial control equipment that can support multi-channel stable output and adapt to multi-channel parallel connection of power supplies.

[0025] Specifically, the first rectifying and filtering module 101 and the second rectifying and filtering module 201 adopt a bridge rectifier circuit, which is a common AC rectifying circuit, which is composed of four diodes and can convert an AC input signal into a unidirectional DC output signal. In the present application, the first rectifying and filtering module 101 and the second rectifying and filtering module 201 preferably adopt a full-wave bridge rectifier circuit, which can use the positive and negative half cycles of the AC signal to perform rectification operations through two diodes respectively, thereby obtaining a higher rectification efficiency.

[0026] The present application can also connect a capacitor filter behind the bridge rectifier circuit to smooth the output signal and remove the high-frequency noise therein. The capacitor filter consists of a capacitor and a load resistor and is connected in parallel with the bridge rectifier circuit. When the AC input signal passes through the bridge rectifier circuit, it will be stored by the capacitor and release a smooth DC signal, which is then output through the load resistor.

[0027] Specifically, the first AC / DC converter 102 and the second AC / DC converter 202 are forward AC / DC converters or flyback AC / DC converters. The forward AC / DC converter is preferably a gallium nitride power factor correction converter; the flyback AC / DC converter is preferably a gallium nitride offline flyback PFC converter.

[0028] Gallium nitride power factor correction converter (GaN PFC Converter) is a power electronic converter that uses gallium nitride semiconductor devices as main components. It is used to improve the power factor (PF) of AC power loads, thereby achieving energy saving and reducing grid pollution.

[0029] Traditional AC-DC converters usually use silicon switching devices, such as ordinary diodes and MOSFETs, which have slow switching speeds and are prone to large switching losses and electromagnetic interference noise. Gallium nitride semiconductor devices have the advantages of high-speed switching, low conduction and low reverse recovery charge, which can effectively reduce switching losses and EMI noise and improve conversion efficiency and stability.

[0030] In a GaN power factor correction converter, the input voltage is modulated by a controller to make the output current in phase with the input voltage during the working cycle, thereby achieving power factor correction. At the same time, GaN semiconductor devices can achieve high-speed switching, reducing the loss and EMI noise of switching devices, and improving conversion efficiency and reliability.

[0031] The GaN offline flyback PFC converter is a power factor correction (PFC) circuit designed using GaN semiconductor devices to improve the power factor and efficiency of AC-DC power converters.

[0032] In this type of converter, an offline flyback topology is often used to implement power factor correction. By using GaN devices, such as GaN MOSFETs or GaN diodes, efficient, high-frequency switching operations can be achieved, thereby reducing switching losses and improving conversion efficiency.

[0033] Offline flyback PFC converters using GaN devices have significant advantages in power density, efficiency, and size. The characteristics of GaN semiconductor devices enable this type of PFC converter to better meet the needs of modern electronic devices for high efficiency, miniaturization, and reliability.

[0034] Specifically, the first isolated output module 103 and the second isolated output module 203 are used to provide output power with isolation function. It is usually composed of an input end, an output end and an isolation converter, and uses electromagnetic insulation or photoelectric isolation technology to completely isolate the input power from the output power.

[0035] The main functions of the first isolated output module 103 and the second isolated output module 203 are to protect the load device from interference and noise in the input power supply, and at the same time provide safety isolation, prevent current feedback, and improve the stability and safety of the system.

[0036] In the present application, the first isolated output module 103 and the second isolated output module 203 may have a variety of output characteristics, such as constant voltage output, constant current output, adjustable voltage output, etc.

[0037] Specifically, the first current balancing module 104 and the second current balancing module 204 are used to balance the load current distribution of their respective channels. In a multi-channel power supply system, since the load characteristics of each channel may be different, the current distribution of each channel output is uneven, which requires the use of a current balancing module to achieve balanced distribution of the load current.

[0038] In the present application, the first current balancing module 104 and the second current balancing module 204 monitor and control the current of each channel and adjust the output current of each channel to achieve the purpose of keeping the current output of each channel balanced. This can improve the stability and reliability of the system and effectively protect the equipment of each channel from the influence of overload.

[0039] A power supply for industrial control equipment provided in the present application also includes a first fuse and a second fuse, the first fuse is connected in series between the AC mains 1 and the first rectifier and filter module 101, and the second fuse is connected in series between the AC mains 1 and the second rectifier and filter module 201.

[0040] In the present application, the first fuse and the second fuse are used to protect electronic equipment and electrical systems from damage caused by overload current or short circuit current in the circuit. The first fuse and the second fuse are usually made of a thin wire or a lead alloy wire, which has a certain conductivity, but will be heated when the current exceeds a certain level, and the circuit will be melted to protect the equipment and system.

[0041] The working principle of the fuse is based on its thermal response characteristics. When the current in the circuit exceeds the rated current that the fuse can withstand, the thin wire or lead alloy wire inside the fuse will be heated and melted, interrupting the flow of current, thereby cutting off the circuit and preventing excessive current from damaging the equipment or causing circuit failure.

[0042] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A power supply for industrial control equipment, characterized in that: It includes a first rectifying and filtering module, a second rectifying and filtering module, a first AC / DC converter, a second AC / DC converter, a first isolated output module, a second isolated output module, a first current balancing module and a second current balancing module; The input ends of the first rectifier and filter module and the second rectifier and filter module are both electrically connected to the AC mains, the output ends of the first rectifier and filter module and the second rectifier and filter module are respectively electrically connected to the input ends of the first AC / DC converter and the second AC / DC converter, the output ends of the first AC / DC converter and the second AC / DC converter are respectively electrically connected to the input ends of the first isolated output module and the second isolated output module, the output ends of the first isolated output module and the second isolated output module are respectively electrically connected to the input ends of the first current equalizing module and the second current equalizing module, and the output ends of the first current equalizing module and the second current equalizing module are used to be electrically connected to industrial control equipment.

2. The power supply for industrial control equipment according to claim 1, characterized in that: The first AC / DC converter and the second AC / DC converter are forward AC / DC converters or flyback AC / DC converters.

3. The power supply for industrial control equipment according to claim 2, characterized in that: The forward AC / DC converter is a gallium nitride power factor correction converter.

4. The power supply for industrial control equipment according to claim 2, characterized in that: The flyback AC / DC converter is a gallium nitride off-line flyback PFC converter.

5. The power supply for industrial control equipment according to claim 1, characterized in that: It also includes a first fuse and a second fuse, wherein the first fuse is connected in series between the AC mains and the first rectifier and filter module, and the second fuse is connected in series between the AC mains and the second rectifier and filter module.

6. The power supply for industrial control equipment according to claim 1, characterized in that: The first rectifying and filtering module and the second rectifying and filtering module adopt a bridge rectifying circuit.

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