Voltage-stabilized power supply of inverter welder

Abstract

The utility model relates to the field of inverter electric welding machines, in particular to a voltage-stabilized power supply of an inverter electric welding machine, which comprises a permanent magnet motor, an absorption voltage-stabilizing module, a filtering inversion module and an amorphous transformer module, three-phase power generated by the permanent magnet motor is 400V and rectified by a three-phase rectifier bridge consisting of a silicon controlled rectifier (SCR), a diode D1, a diode D2 and a diode D3; after being electrolyzed and filtered by the capacitor C1, the capacitor C2 and the capacitor C3, the voltage is inverted by the IGBT Q1, the IGBT Q2, the IGBT Q3 and the IGBT Q4 to form a 220V phase voltage, the permanent magnet motor outputs a voltage of 380-420V in a no-load state, the voltage is stabilized to DC400V by a silicon-controlled voltage-stabilizing three-phase rectifier bridge, and the capacitor C1, the capacitor C2 and the capacitor C3 of 2KV 103 are added, so that the peak voltage of a circuit is absorbed. And a stable power supply is provided for the inverter welder, so that quality accidents of the inverter welder caused by voltage fluctuation impact are reduced.

Description

Technical Field

[0001] This utility model relates to the field of inverter welding machines, and in particular to a voltage regulator for inverter welding machines. Background Technology

[0002] Currently, multi-functional generators that can be used for both power generation and welding employ permanent magnet motors as the power supply for inverter welding machines. The most significant characteristic of permanent magnet motors is the large voltage difference of nearly 100V between no-load and load conditions. Currently, the market only uses simple rectification and filtering methods, which puts a significant strain on inverter welding machines, frequently leading to batch quality issues when powered by permanent magnet motors. Utility Model Content

[0003] The purpose of this utility model is to provide a voltage regulator for inverter welding machines, which aims to solve the problem that the simple rectification and filtering methods on the market cause a great impact on inverter welding machines, resulting in frequent batch quality accidents when the inverter welding machines are powered by permanent magnet motors.

[0004] To achieve the above objectives, this utility model provides a voltage regulator for an inverter welding machine, including a permanent magnet motor, an absorption voltage regulator module, a filter inverter module, and an amorphous transformer module;

[0005] The absorption voltage regulator module is connected to the permanent magnet motor, the filter inverter module is connected to the absorption voltage regulator module, and the amorphous transformer module is connected to the filter inverter module.

[0006] The absorption and voltage regulation module includes diodes D1, D2, D3, a SCR (Semiconductor Rectifier), D4, D5, D6, capacitors C1, C2, and C3. One end of diode D1 is connected to the permanent magnet motor, one end of diode D2 is connected to the permanent magnet motor, one end of diode D3 is connected to the permanent magnet motor, the SCR is connected to the other ends of diodes D1, D2, and D3 respectively, one end of diode D4 is connected to the permanent magnet motor, one end of diode D5 is connected to the permanent magnet motor, one end of diode D6 is connected to the permanent magnet motor, capacitor C1 is connected in parallel with diode D4, capacitor C2 is connected in parallel with diode D5, and capacitor C3 is connected in parallel with diode D6.

[0007] The absorption voltage regulator module includes a capacitor C4, IGBTs Q1, Q2, and Q3. The capacitor C4 is connected to the other ends of diodes D1, D2, and D3, respectively. One end of IGBT Q1 is connected to the capacitor C4. One end of IGBT Q2 is connected to the other ends of IGBTs Q1 and Q3. IGBT Q3 is connected to the capacitor C4. One end of IGBT Q4 is connected to the other ends of IGBTs Q1 and Q3, respectively.

[0008] The amorphous transformer module includes an amorphous transformer T, a resistor R1, a capacitor C5, a diode D7, a diode D8, a resistor R2, and a capacitor C6. The amorphous transformer T is connected to the other ends of IGBT Q1 and IGBT Q3, and to one end of IGBT Q2 and IGBT Q4. One end of the resistor R1 is connected to the amorphous transformer T, and one end of the capacitor C5 is connected to the other end of the resistor R1. The diode D7 is connected in parallel with the resistor R1 and the capacitor C5. One end of the resistor R2 is connected to the amorphous transformer T, and one end of the capacitor C6 is connected to the other end of the resistor R2. The diode D8 is connected in parallel with the resistor R2 and the capacitor C6.

[0009] This utility model discloses a voltage regulator for an inverter welding machine. The three-phase 400V power output from the permanent magnet motor is rectified by a three-phase rectifier bridge composed of a silicon controlled rectifier (SCR), diodes D1, D2, and D3. After electrolytic filtering by capacitors C1, C2, and C3, the power is inverted by four IGBT transistors Q1, Q2, Q3, and Q4 to form a 220V phase voltage. The permanent magnet motor outputs 380-420V under no-load conditions. The voltage is stabilized at DC 400V by the SCR-regulated three-phase rectifier bridge. The addition of three 2KV 103 capacitors (C1, C2, and C3) absorbs peak voltages in the circuit, providing a stable power supply to the inverter welding machine and reducing quality accidents caused by voltage fluctuations. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is the circuit diagram of the inverter welding machine voltage regulator of this utility model.

[0012] In the diagram: 101 - Permanent magnet motor, 102 - Absorption and voltage regulation module, 103 - Filtering and inverter module, 104 - Amorphous transformer module. Detailed Implementation

[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0014] The first embodiment of this application is as follows:

[0015] Please see Figure 1 , Figure 1 This is the circuit diagram of the inverter welding machine voltage regulator of this utility model.

[0016] This utility model provides a regulated power supply for an inverter welding machine, including a permanent magnet motor 101, an absorption and regulated voltage module 102, a filtering inverter module 103, and an amorphous transformer module 104. The aforementioned solution addresses the problem that the simple rectification and filtering methods currently available on the market cause significant stress on inverter welding machines, leading to frequent batch quality issues when powered by the permanent magnet motor 101.

[0017] This utility model provides a voltage regulator for an inverter welding machine, including a permanent magnet motor 101, an absorption voltage regulator module 102, a filter inverter module 103, and an amorphous transformer module 104.

[0018] The absorption voltage regulator module 102 is connected to the permanent magnet motor 101, the filter inverter module 103 is connected to the absorption voltage regulator module 102, and the amorphous transformer module 104 is connected to the filter inverter module 103.

[0019] Furthermore, one end of diode D1 is connected to the permanent magnet motor 101, one end of diode D2 is connected to the permanent magnet motor 101, one end of diode D3 is connected to the permanent magnet motor 101, the silicon controlled rectifier (SCR) is connected to the other ends of diodes D1, D2, and D3 respectively, one end of diode D4 is connected to the permanent magnet motor 101, one end of diode D5 is connected to the permanent magnet motor 101, one end of diode D6 is connected to the permanent magnet motor 101, capacitor C1 is connected in parallel with diode D4, capacitor C2 is connected in parallel with diode D5, and capacitor C3 is connected in parallel with diode D6.

[0020] Furthermore, capacitor C4 is connected to the other ends of diodes D1, D2, and D3, respectively; one end of IGBT Q1 is connected to C4; one end of IGBT Q2 is connected to the other ends of IGBTs Q1 and Q3; IGBT Q3 is connected to capacitor C4; and one end of IGBT Q4 is connected to the other ends of IGBTs Q1 and Q3, respectively.

[0021] Furthermore, the amorphous transformer T is connected to the other ends of IGBT Q1 and IGBT Q3, and to one end of IGBT Q2 and IGBT Q4. One end of the resistor R1 is connected to the amorphous transformer T, one end of the capacitor C5 is connected to the other end of the resistor R1, the diode D7 is connected in parallel with the resistor R1 and the capacitor C5, one end of the resistor R2 is connected to the amorphous transformer T, one end of the capacitor C6 is connected to the other end of the resistor R2, and the diode D8 is connected in parallel with the resistor R2 and the capacitor C6.

[0022] In this embodiment, the 400V three-phase power generated by the permanent magnet motor 101 is rectified by a three-phase rectifier bridge composed of the SCR, diodes D1, D2, and D3. After electrolytic filtering by capacitors C1, C2, and C3, it is inverted by four IGBTs Q1, Q2, Q3, and Q4 to form a 220V phase voltage. When the permanent magnet motor 101 is under no-load, the output voltage is 380-420V. After passing through the SCR-regulated three-phase rectifier bridge, the voltage is stabilized at DC 400V. The addition of three 2KV 103 capacitors C1, C2, and C3 absorbs the peak voltage of the line, providing a stable power supply to the inverter welding machine, thereby reducing quality accidents caused by voltage fluctuations in the inverter welding machine.

[0023] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A voltage regulator for an inverter welding machine, characterized in that, Includes permanent magnet motors, absorption voltage regulator modules, filter inverter modules, and amorphous transformer modules; The absorption voltage regulator module is connected to the permanent magnet motor, the filter inverter module is connected to the absorption voltage regulator module, and the amorphous transformer module is connected to the filter inverter module.

2. The inverter welding machine voltage regulator as described in claim 1, characterized in that, The absorption voltage regulator module includes diodes D1, D2, D3, a silicon controlled rectifier (SCR), D4, D5, D6, capacitors C1, C2, and C3. One end of diode D1 is connected to the permanent magnet motor, one end of diode D2 is connected to the permanent magnet motor, and one end of diode D3 is connected to the permanent magnet motor. The SCR is connected to the other ends of diodes D1, D2, and D3 respectively. One end of diode D4, one end of diode D5, and one end of diode D6 are connected to the permanent magnet motor. Capacitor C1 is connected in parallel with diode D4, capacitor C2 is connected in parallel with diode D5, and capacitor C3 is connected in parallel with diode D6.

3. The inverter welding machine voltage regulator as described in claim 2, characterized in that, The absorption voltage regulator module includes a capacitor C4, IGBTs Q1, Q2, Q3, and Q4. The capacitor C4 is connected to the other ends of diodes D1, D2, and D3, respectively. One end of IGBT Q1 is connected to the capacitor C4. One end of IGBT Q2 is connected to the other ends of IGBTs Q1 and Q3. IGBT Q3 is connected to the capacitor C4. One end of IGBT Q4 is connected to the other ends of IGBTs Q1 and Q3, respectively.

4. The inverter welding machine voltage regulator as described in claim 3, characterized in that, The amorphous transformer module includes an amorphous transformer T, a resistor R1, a capacitor C5, a diode D7, a diode D8, a resistor R2, and a capacitor C6. The amorphous transformer T is connected to the other ends of IGBT Q1 and IGBT Q3, and to one end of IGBT Q2 and IGBT Q4. One end of the resistor R1 is connected to the amorphous transformer T, and one end of the capacitor C5 is connected to the other end of the resistor R1. The diode D7 is connected in parallel with the resistor R1 and the capacitor C5. One end of the resistor R2 is connected to the amorphous transformer T, and one end of the capacitor C6 is connected to the other end of the resistor R2. The diode D8 is connected in parallel with the resistor R2 and the capacitor C6.

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