A dynamic simulation system for parallel arc suppressors

Abstract

The present invention discloses a dynamic simulation system for a parallel arc suppressor, belonging to the field of pulse power technology and applications. The system includes: a motion parameter calculation unit for calculating the acceleration and displacement of the armature; a main circuit current sampling unit; a main circuit equivalent unit for calculating the equivalent potential within the main circuit as it varies with the main circuit current and armature displacement; an arc suppression circuit mutual inductance equivalent unit for calculating the equivalent potential within the main circuit as it varies with the arc suppression circuit current and armature displacement; an armature equivalent unit for simulating the electrical performance of the armature branch before and after the armature is ejected; an arc suppression circuit current sampling unit; an arc suppression circuit equivalent unit for calculating the equivalent potential within the arc suppression circuit as it varies with the arc suppression circuit current and armature displacement; and a main circuit mutual inductance equivalent unit for calculating the equivalent potential within the arc suppression circuit as it varies with the main circuit current and armature displacement. The present invention can simulate the entire process of actual system operation and accurately predict the effectiveness of a parallel arc suppressor under different conditions.

Description

Technical Field

[0001] The invention belongs to the field of pulse power technology and applications, and particularly relates to a dynamic simulation system for a parallel arc suppressor. Background Art

[0002] Special linear motors are a new type of launcher that utilizes electromagnetic force to accelerate a launch payload to ultra-high speeds. They offer advantages such as high initial velocity, long range, and adjustable speed. Due to the operational characteristics of special linear motors, when the launch payload leaves the barrel, if arc extinguishing / igniting measures are not implemented, the residual magnetic energy in the guide rails will be released as a muzzle arc. This muzzle arc not only causes severe ablation of the guide rails and insulating materials in the muzzle area, but the rapid expansion of the arc within a short period of time can also cause blowback of extremely high-temperature plasma. These factors can weaken the operational reliability of special linear motors and shorten their service life.

[0003] Parallel arc suppressors can effectively suppress muzzle arcing, especially when applied to enhanced special linear motors. Selecting appropriate electrical parameters can completely eliminate armature exit current. To implement the parallel arc suppressor in enhanced special linear motors, it is crucial to establish a corresponding dynamic simulation model. In addition to the armature internal ballistic process coupled with mechanical, electrical, and magnetic multi-physics fields, the dynamic simulation model also needs to include the commutation process of the residual current passing through the parallel arc suppressor after the armature exits the bore. After the parallel arc suppressor is introduced, when the armature moves within the bore, the additional magnetic field generated by the auxiliary rail of the enhanced special linear motor causes an induced current to appear in the arc suppression circuit, resulting in changes in the current distribution, magnetic field distribution, and electromagnetic force acting on the armature. After the armature exits the bore, the armature-rail current drops rapidly, and the residual energy in the rail is released through the rail and the parallel arc suppressor. At present, arc extinguishing technology for special linear motors is still in its infancy. The existing dynamic simulation methods and systems of parallel arc extinguishers cannot accurately simulate the entire process of system operation, and cannot predict the effect of parallel arc extinguishers in suppressing arcs under different conditions, as well as the overall performance of the system under these conditions. Summary of the Invention

[0004] In view of this, the present invention provides a dynamic simulation system for a parallel arc suppressor, comprising: a motion parameter calculation unit, a main circuit current sampling unit, a main circuit equivalent unit, an arc suppression circuit mutual inductance equivalent unit, an armature equivalent unit, an arc suppression circuit current sampling unit, an arc suppression circuit equivalent unit, and a main circuit mutual inductance equivalent unit; wherein,

[0005] The motion parameter calculation unit is used to calculate and output the acceleration and displacement of the armature when it moves in the bore based on the main circuit current output by the main circuit current sampling unit and the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit; wherein the acceleration is calculated based on the main circuit self-inductance gradient, the arc extinguishing circuit self-inductance gradient, the mutual inductance gradient between the main circuit and the arc extinguishing circuit, and the armature mass;

[0006] The main circuit current sampling unit is used to sample the main circuit current, wherein the main circuit refers to a series circuit consisting of the main circuit current sampling unit, the main circuit equivalent unit, the arc suppression circuit mutual inductance equivalent unit, and the armature equivalent unit;

[0007] The main circuit equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0008] The arc extinguishing circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0009] Before the armature is ejected from the barrel, the armature equivalent unit is used to calculate the acceleration output by the unit according to the motion parameters, and calculate and output the equivalent potential that changes with the armature motion. After the armature is ejected from the barrel, an open circuit is formed between the armature equivalent unit and the main circuit, and no longer constitutes an electrical connection;

[0010] The arc extinction circuit current sampling unit is used to sample the arc extinction circuit current, wherein the arc extinction circuit refers to a series circuit consisting of the arc extinction circuit current sampling unit, the arc extinction circuit equivalent unit, and the main circuit mutual inductance equivalent unit;

[0011] The arc extinguishing circuit equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0012] The main circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit.

[0013] The present invention has the following beneficial effects:

[0014] The present invention provides a dynamic simulation system for a parallel arc suppressor, which includes the internal ballistic process of the mechanical, electrical and magnetic multi-physical fields coupling before the armature is discharged, and the commutation process of the residual current through the parallel arc suppressor after the armature is discharged. By simulating the entire process of the actual operation of the system, the effectiveness of the parallel arc suppressor under different conditions and the overall performance of the system can be accurately predicted, laying the foundation for the optimal design of the parallel arc suppressor, and thus playing a key role in improving the arc extinguishing capability and achieving the best matching of electrical parameters.

[0015] The present invention sets up a main circuit equivalent unit, an arc extinguishing circuit mutual inductance equivalent unit, an arc extinguishing circuit equivalent unit, and a main circuit mutual inductance equivalent unit to decouple the interaction between the main circuit and the arc extinguishing circuit caused by the armature movement, so that the dynamic simulation system can reflect the change trend of each equivalent component in the entire emission process, which is beneficial to the optimization design of the parallel arc extinguisher; the present invention sets up an armature equivalent unit to simulate the change process of the current before and after the armature is discharged from the barrel, so that the dynamic simulation system can simulate the entire discharge process of the special linear motor system; the present invention sets up a motion parameter calculation unit to reflect the electromagnetic force exerted on the armature under the joint action of the main circuit and the arc extinguishing circuit, so that the electromagnetic field characteristics and dynamic characteristics in the system are correlated with each other, which is closer to the actual operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of the overall structure of a dynamic simulation system for a parallel arc suppressor provided by an embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of a motion parameter calculation unit provided by an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of a main circuit equivalent unit provided by an embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of an arc-extinguishing circuit mutual inductance equivalent unit provided by an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of an armature equivalent unit provided by an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of an arc extinguishing circuit equivalent unit provided in an embodiment of the present invention;

[0023] Figure 7 A schematic structural diagram of a main circuit mutual inductance equivalent unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned objectives, the present invention adopts the following technical solutions.

[0025] See also Figure 1 The embodiment of the present invention provides a dynamic simulation system for a parallel arc suppressor, comprising: a motion parameter calculation unit, a main circuit current sampling unit, a main circuit equivalent unit, an arc suppression circuit mutual inductance equivalent unit, an armature equivalent unit, an arc suppression circuit current sampling unit, an arc suppression circuit equivalent unit, and a main circuit mutual inductance equivalent unit; wherein,

[0026] a motion parameter calculation unit, configured to calculate and output the acceleration and displacement of the armature when it moves in the bore based on the main circuit current output by the main circuit current sampling unit and the arc-extinguishing circuit current output by the arc-extinguishing circuit current sampling unit; wherein the acceleration is calculated by the main circuit self-inductance gradient, the arc-extinguishing circuit self-inductance gradient, the mutual inductance gradient between the main circuit and the arc-extinguishing circuit, and the armature mass; and the displacement is calculated by the acceleration, integrator, selection switch, and delay unit;

[0027] The main circuit current sampling unit is used to sample the main circuit current, wherein the main circuit refers to a series circuit consisting of the main circuit current sampling unit, the main circuit equivalent unit, the arc suppression circuit mutual inductance equivalent unit, and the armature equivalent unit;

[0028] The main circuit equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the main circuit current and the armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0029] The arc-extinguishing circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the arc-extinguishing circuit current and the armature displacement based on the arc-extinguishing circuit current output by the arc-extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0030] The armature equivalent unit is used to simulate the electrical performance of the armature branch before and after the armature is ejected. Before the armature is ejected, it is used to calculate the acceleration output by the unit based on the motion parameters, and calculate and output the equivalent potential that changes with the armature motion. After the armature is ejected, the armature equivalent unit forms an open circuit with the main circuit and no longer forms an electrical connection.

[0031] The arc-extinguishing circuit current sampling unit is used to sample the arc-extinguishing circuit current, wherein the arc-extinguishing circuit refers to a series circuit consisting of the arc-extinguishing circuit current sampling unit, the arc-extinguishing circuit equivalent unit, and the main circuit mutual inductance equivalent unit;

[0032] The arc extinguishing circuit equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit;

[0033] The main circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit.

[0034] Figure 2 FIG. 1 shows a specific embodiment of the motion parameter calculation unit. Figure 2 As shown, the acceleration and displacement of the armature when it moves in the bore are calculated and output through the multiplier, gain unit, adder, integrator, selection switch and delay unit. The motion parameter calculation unit calculates the armature acceleration based on the main circuit current output by the main circuit current sampling unit and the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit through the multiplier, gain unit and adder. The acceleration of the armature is calculated by the following formula:

[0035] ,

[0036] Where a is the acceleration of the armature, m is the mass of the armature, is the main circuit current, is the arc extinguishing circuit current, is the self-inductance gradient of the main loop, is the self-inductance gradient of the arc extinguishing circuit, Mutual inductance gradient between the main circuit and the arc suppression circuit;

[0037] The armature displacement calculation is realized through the integrator, selection switch and delay unit. The armature displacement is calculated by the following formula:

[0038] ,

[0039] Where x is the displacement of the armature, t is the time, and l is the maximum acceleration distance of the armature in the bore.

[0040] Figure 3 A specific implementation of the main circuit equivalent unit is shown. Figure 3As shown, the main circuit equivalent unit calculates the equivalent potential in the main circuit that changes with the main circuit current and armature displacement through a gain unit, an adder, a multiplier, and a differential unit based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit. The result of the real-time calculation is used as the input of the controlled voltage source of the main circuit equivalent unit, and the equivalent potential calculated in real time is connected to the main circuit in the form of a voltage source; the differential unit is composed of a capacitor with a capacitance value of 1F, a resistor with a resistance value of 1μΩ, a current sampling unit, and a differential unit controlled voltage source connected in series. The current sampling unit outputs a differential signal of the control signal input to the differential unit controlled voltage source, which can realize differential operation when the electrical signal suddenly changes.

[0041] The equivalent potential in the main circuit that changes with the main circuit current and armature displacement is calculated using the following formula:

[0042] ,

[0043] in, The equivalent potential in the main circuit changes with the main circuit current and armature displacement. is the initial resistance corresponding to the armature at the initial position of motion, is the resistance gradient, is the initial self-inductance of the main circuit corresponding to the armature at the initial position of motion.

[0044] Figure 4 FIG. 1 shows a specific implementation of the arc extinguishing circuit mutual inductance equivalent unit. Figure 4 As shown, the arc extinguishing circuit mutual inductance equivalent unit realizes the calculation of the equivalent potential in the main circuit that changes with the arc extinguishing circuit current and the armature displacement through a gain unit, an adder, a multiplier, a differential unit and a selection switch based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit. The result of the real-time calculation is used as the input of the controlled voltage source of the arc extinguishing circuit mutual inductance equivalent unit, and the equivalent potential calculated in real time is connected to the main circuit in the form of a voltage source.

[0045] The equivalent potential in the main circuit that changes with arc suppression circuit current and armature displacement is calculated using the following formula:

[0046] ,

[0047] in, The equivalent potential in the main circuit changes with the arc extinguishing circuit current and armature displacement. is the initial mutual inductance between the main circuit and the arc extinguishing circuit corresponding to the armature at the initial position of movement, It is the mutual inductance gradient between the main circuit and the arc suppression circuit.

[0048] Figure 5FIG. 1 shows a specific embodiment of the armature equivalent unit. Figure 5 As shown, the armature equivalent unit is used to simulate the electrical performance of the armature branch before and after the armature is ejected. Before the armature is ejected, the acceleration output by the motion parameter calculation unit is calculated, and the armature equivalent potential that changes with the armature motion is calculated through an adder, a current sampling unit, a delay unit, and a multiplier. The result of the real-time calculation is used as the input of the controlled voltage source of the armature equivalent unit, and the equivalent potential calculated in real time is connected to the main circuit in the form of a voltage source; through a discharge circuit breaker composed of an integrator, a selection switch, and an ideal switch, the discharge circuit breaker and the controlled voltage source of the armature equivalent unit are connected in series to ensure that it is connected to the main circuit in a short-circuit form before the armature is ejected, so as not to affect the main circuit. After the armature is ejected, an open circuit is formed between the armature equivalent unit and the main circuit, and no electrical connection is formed.

[0049] The armature equivalent potential that changes with armature motion is calculated using the following formula:

[0050] ,

[0051] in, is the armature equivalent potential that changes with the armature motion, is the armature resistance, is the single-side pivot rail contact resistance, is the armature current.

[0052] Figure 6 A specific implementation of the arc extinguishing circuit equivalent unit is shown. Figure 6 As shown, the arc extinguishing circuit equivalent unit realizes the calculation of the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement through a subtractor, a gain unit, an adder, a multiplier, a differential unit and a selection switch based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit. The result of the real-time calculation is used as the input of the controlled voltage source of the arc extinguishing circuit equivalent unit, and the equivalent potential calculated in real time is connected to the arc extinguishing circuit in the form of a voltage source.

[0053] The equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and armature displacement is calculated using the following formula:

[0054] ,

[0055] in, is the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and armature displacement, is the resistance of the parallel arc suppressor, is the inductance of the parallel arc suppressor, is the initial self-inductance of the arc extinguishing circuit corresponding to the armature at the initial position of movement, is the self-inductance gradient of the arc extinguishing circuit.

[0056] Figure 7 FIG. 1 shows a specific implementation of the main circuit mutual inductance equivalent unit. Figure 7 As shown, the main circuit mutual inductance equivalent unit calculates the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit through a gain unit, an adder, a multiplier, a differential unit and a selection switch. The result of the real-time calculation is used as the input of the controlled voltage source of the main circuit mutual inductance equivalent unit, and the equivalent potential calculated in real time is connected to the arc extinguishing circuit in the form of a voltage source.

[0057] The equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement is calculated using the following formula:

[0058] ,

[0059] in, It is the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement.

Claims

1. A dynamic simulation system for parallel arc suppressors, characterized in that: The system includes: a motion parameter calculation unit, a main circuit current sampling unit, a main circuit equivalent unit, an arc extinguishing circuit mutual inductance equivalent unit, an armature equivalent unit, an arc extinguishing circuit current sampling unit, an arc extinguishing circuit equivalent unit, and a main circuit mutual inductance equivalent unit; wherein, The motion parameter calculation unit is used to calculate and output the acceleration and displacement of the armature when it moves in the bore based on the main circuit current output by the main circuit current sampling unit and the arc-extinguishing circuit current output by the arc-extinguishing circuit current sampling unit; wherein the acceleration is calculated based on the main circuit current, the arc-extinguishing circuit current, the main circuit self-inductance gradient, the arc-extinguishing circuit self-inductance gradient, the mutual inductance gradient between the main circuit and the arc-extinguishing circuit, and the armature mass; The main circuit current sampling unit is used to sample the main circuit current, wherein the main circuit refers to a series circuit consisting of the main circuit current sampling unit, the main circuit equivalent unit, the arc suppression circuit mutual inductance equivalent unit, and the armature equivalent unit; The main circuit equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit; The arc extinguishing circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the main circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit; The armature equivalent unit is used to simulate the electrical performance of the armature branch before and after the armature is ejected. Before the armature is ejected, it is used to calculate the acceleration output by the unit based on the motion parameters, and calculate and output the equivalent potential that changes with the armature motion. After the armature is ejected, an open circuit is formed between the armature equivalent unit and the main circuit, and no longer constitutes an electrical connection. The arc extinction circuit current sampling unit is used to sample the arc extinction circuit current, wherein the arc extinction circuit refers to a series circuit consisting of the arc extinction circuit current sampling unit, the arc extinction circuit equivalent unit, and the main circuit mutual inductance equivalent unit; The arc extinguishing circuit equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit; The main circuit mutual inductance equivalent unit is used to calculate and output the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit.

2. A dynamic simulation system for a parallel arc suppressor according to claim 1, characterized in that: The motion parameter calculation unit calculates and outputs the acceleration and displacement of the armature when it moves in the bore based on the main circuit current output by the main circuit current sampling unit and the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit. The acceleration of the armature is calculated by the following formula: ， Where a is the acceleration of the armature, m is the mass of the armature, is the main circuit current, is the arc extinguishing circuit current, is the self-inductance gradient of the main loop, is the self-inductance gradient of the arc extinguishing circuit, Mutual inductance gradient between the main circuit and the arc suppression circuit; The displacement of the armature is calculated by the following formula: ， Where x is the displacement of the armature, t is the time, and l is the maximum acceleration distance of the armature in the bore.

3. A dynamic simulation system for a parallel arc suppressor according to claim 2, characterized in that: The main circuit equivalent unit calculates and outputs the equivalent potential in the main circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit. The equivalent potential in the main circuit that changes with the main circuit current and armature displacement is calculated using the following formula: ， in, The equivalent potential in the main circuit changes with the main circuit current and armature displacement. is the initial resistance corresponding to the armature at the initial position of motion, is the resistance gradient, is the initial self-inductance of the main circuit corresponding to the armature at the initial position of motion.

4. A dynamic simulation system for a parallel arc suppressor according to claim 3, characterized in that: The arc extinguishing circuit mutual inductance equivalent unit calculates and outputs the equivalent potential in the main circuit that changes with the arc extinguishing circuit current and armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit. The equivalent potential in the main circuit that changes with the arc extinguishing circuit current and armature displacement is calculated by the following formula: ， in, The equivalent potential in the main circuit changes with the arc extinguishing circuit current and armature displacement. is the initial mutual inductance between the main circuit and the arc extinguishing circuit corresponding to the armature at the initial position of movement, It is the mutual inductance gradient between the main circuit and the arc suppression circuit.

5. A dynamic simulation system for parallel arc suppressors according to claim 4, characterized in that: The armature equivalent unit is used to simulate the electrical performance of the armature branch before and after the armature is ejected. Before the armature is ejected, the acceleration output by the motion parameter calculation unit is used to calculate and output the armature equivalent potential that changes with the armature motion. After the armature is ejected, an open circuit is formed between the armature equivalent unit and the main circuit, and no longer forms an electrical connection. The armature equivalent potential that changes with the armature motion is calculated using the following formula: ， in, is the armature equivalent potential that changes with the armature motion, is the armature resistance, is the single-side pivot rail contact resistance, is the armature current.

6. A dynamic simulation system for parallel arc suppressors according to claim 5, characterized in that: The arc extinguishing circuit equivalent unit calculates and outputs the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement based on the arc extinguishing circuit current output by the arc extinguishing circuit current sampling unit and the displacement output by the motion parameter calculation unit. The equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and the armature displacement is calculated by the following formula: ， in, is the equivalent potential in the arc extinguishing circuit that changes with the arc extinguishing circuit current and armature displacement, is the resistance of the parallel arc suppressor, is the inductance of the parallel arc suppressor, is the initial self-inductance of the arc extinguishing circuit corresponding to the armature at the initial position of movement, is the self-inductance gradient of the arc extinguishing circuit.

7. A dynamic simulation system for parallel arc suppressors according to claim 6, characterized in that: The main circuit mutual inductance equivalent unit calculates and outputs the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement based on the main circuit current output by the main circuit current sampling unit and the displacement output by the motion parameter calculation unit. The equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement is calculated by the following formula: ， in, It is the equivalent potential in the arc extinguishing circuit that changes with the main circuit current and armature displacement.

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