Power regulator aging test machine

Abstract

The invention relates to the technical field of power electronic testing, and discloses an aging test machine for a power regulator, which comprises a multi-voltage power supply module for providing a plurality of test power supplies with different voltage levels in the same test equipment, and the voltage levels are respectively output through mutually independent power supply paths; the safe power-on control module comprises a total power-on control unit and access enabling units corresponding to the voltage grades respectively; the test load module comprises two different types of load units; the automatic control module outputs a control signal to the tested power regulator; and a test interface module. The multi-voltage power supply module is integrated in the same test equipment and matched with the safe power-on control module, so that selective output of different voltage levels is realized, the test machine can complete test of multi-specification power regulators under the condition that an external power supply is not replaced, the risk of multi-voltage misconnection is avoided, and the test efficiency is improved. And the safety, the universality and the equipment integration of the test process are improved.

Description

Technical Field

[0001] This invention relates to the field of power electronics testing technology, specifically to an aging tester for power regulators. Background Technology

[0002] A power regulator is a power electronic device used to regulate and control AC power. It is widely used in industrial heating, lighting dimming, motor speed control and other fields. In order to ensure that the power regulator can operate stably and safely before leaving the factory or before use, it is usually necessary to perform aging tests and functional tests. As a special testing equipment, the power regulator aging test machine is mainly used to provide power, load and control signals to the power regulator under test under controlled conditions to simulate its actual working state, thereby verifying its performance and reliability. Existing power regulator aging tests usually adopt a decentralized testing method, which configures external power supplies and test devices of corresponding voltage levels according to the specifications of different power regulators.

[0003] However, in current technology, aging tests of power regulators usually require configuring test power supplies for different voltage levels or frequently changing wiring methods. In multi-voltage test scenarios, voltage selection errors or misconnection problems are prone to occur, resulting in insufficient safety and poor versatility in the test process, making it difficult to achieve centralized and efficient testing of power regulators of various specifications. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a power regulator aging test machine, which solves the problems of cumbersome multi-voltage switching and easy voltage misconnection in existing aging tests.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power regulator aging test machine, comprising: The multi-voltage power supply module provides multiple test power supplies of different voltage levels in the same test equipment, with each voltage level output through an independent power supply path; A safety power-on control module is located between the multi-voltage power supply module and the test output terminal. The safety power-on control module includes a main power-on control unit and a path enable unit corresponding to each voltage level. Specifically, the power supply path for the corresponding voltage level is connected only when the main power-on control unit is in the enabled state and the selected path enable unit is triggered. The test load module includes two different types of load units, wherein the first load unit is used to perform aging tests on the power regulator under test, and the second load unit is used to perform functional tests on the power regulator under test. The automatic control module outputs control signals to the power regulator under test and automatically adjusts the output state of the control signals according to preset parameters to simulate the working conditions of the power regulator under test. The test interface module electrically connects the main power supply terminal, load terminal, and control terminal of the power regulator under test to the multi-voltage power supply module, the test load module, and the automatic control module, respectively.

[0006] Preferably, the multi-voltage power supply module is used to provide at least four different voltage levels, including adjustable voltage levels and multiple fixed voltage levels.

[0007] Preferably, the multi-voltage power supply module includes a voltage regulating unit and a voltage transforming unit, wherein the voltage regulating unit is used to provide the adjustable voltage level, and the voltage transforming unit is used to provide the fixed voltage level.

[0008] Preferably, the safety power-on control module is used to allow only one power supply path to be in the on state at any given time, so as to prevent multiple voltage levels from supplying power to the power regulator under test at the same time.

[0009] Preferably, the main power-on control unit is connected to each of the path enabling units via an electrical interlock, and the path enabling units control the execution switching elements in the corresponding power supply path.

[0010] Preferably, the first load unit is a resistive load unit, used for aging tests on the power regulator under test by long-term power-on operation.

[0011] Preferably, the second load unit is a visual load unit, used to intuitively judge the working status of the power regulator under test by the change of load status during the functional testing process.

[0012] Preferably, the automatic control module includes a feedback acquisition unit and a control calculation unit, wherein the control calculation unit performs closed-loop adjustment of the control signal based on the parameter information acquired by the feedback acquisition unit.

[0013] Preferably, the automatic control module is used to output at least one analog control signal and a digital control signal to adapt to different types of power regulators or solid-state contactors.

[0014] Preferably, the test interface module includes an insulated connection interface for establishing a safe electrical connection between the power regulator under test and the test machine during the test.

[0015] This invention provides an aging test machine for power regulators. It has the following beneficial effects: 1. This invention integrates a multi-voltage power supply module in the same testing equipment and works with a safety power-on control module to achieve selective output for different voltage levels. This enables the testing machine to complete the testing of multiple power regulators without changing the external power supply, avoiding the risk of incorrect multi-voltage connection and improving the safety, versatility and equipment integration of the testing process.

[0016] 2. This invention sets up a hierarchical power-on control structure consisting of a main power-on control unit and a path enable unit, which requires the power supply path to meet multiple conditions for connection. This structurally limits the false triggering of the power supply path, effectively reducing false power-on or overload caused by operational errors, and improving electrical safety during the testing process.

[0017] 3. This invention enables the tester to flexibly switch load modes according to the test stage by setting a first load unit for aging test and a second load unit for functional detection in the test load module. While ensuring stable operation over a long period of time, it also enables intuitive detection of the output status of the power regulator under test, thereby improving test adaptability.

[0018] 4. This invention automatically adjusts the output control signal of the power regulator under test by setting an automatic control module, enabling the test machine to simulate the operating state of the power regulator under test under actual working conditions, reducing manual adjustment operations, improving the consistency and repeatability of the test process, and facilitating stable testing of batch products.

[0019] 5. By employing an insulated connection structure in the test interface module, this invention separates the connection interfaces of the main power supply, load, and control signals, enabling the power regulator under test to form a clear and reliable electrical connection relationship during wiring and testing. This reduces the risk of accidental contact with live parts and improves the safety and standardization of test operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an aging test machine for a power regulator according to the present invention. Figure 2 This is a schematic diagram of the test bench of the present invention; Figure 3 This is a schematic diagram of the load cell of the test machine of the present invention; Figure 4 This is a schematic diagram of the control circuit of the test machine of the present invention; Figure 5 This is a flowchart illustrating the testing process for an embodiment of the present invention. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 5 This invention provides a power regulator aging test machine, comprising: The multi-voltage power supply module provides multiple test power supplies of different voltage levels in the same test equipment, with each voltage level output through an independent power supply path; The safety power-on control module is located between the multi-voltage power supply module and the test output terminal. The safety power-on control module includes a main power-on control unit and a path enable unit corresponding to each voltage level. Specifically, the power supply path for the corresponding voltage level is only connected when the main power-on control unit is in the enabled state and the selected path enable unit is triggered. The test load module includes two different types of load units, wherein the first load unit is used to perform aging tests on the power regulator under test, and the second load unit is used to perform functional tests on the power regulator under test. The automatic control module outputs control signals to the power regulator under test and automatically adjusts the output state of the control signals according to preset parameters to simulate the working conditions of the power regulator under test. The test interface module electrically connects the main power supply terminal, load terminal, and control terminal of the power regulator under test to the multi-voltage power supply module, the test load module, and the automatic control module, respectively.

[0023] Specifically, in one particular implementation, such as Figures 2-4 As shown, a power regulator aging tester includes a multi-voltage power supply module, a safety power-on control module, a test load module, an automatic control module, and a test interface module; the tester can be used for aging tests and functional testing of single-phase or three-phase power regulators and solid-state contactors. A multi-voltage power supply module is used to provide test power at multiple different voltage levels within the same testing equipment, with each voltage level output through an independent power supply path. In this embodiment, the testing machine expands upon the original 220V and 380V to include four voltage levels: 0-220V adjustable, 220V, 380V, and 440V, and divides them into four separate power supply paths. The 0-220V adjustable voltage can be provided by a voltage regulator, while the 380V / 440V voltage can be provided by a transformer, to meet the testing requirements of products with different specifications. A safe power-on control module is located between the multi-voltage power supply module and the test output terminal. The safe power-on control module includes a main power-on control unit and path enabling units corresponding to each voltage level. The power supply path for the corresponding voltage level is only connected when the main power-on control unit is in an enabled state and the selected path enabling unit is triggered. In this embodiment, the main power-on control unit can be implemented by an air switch, combined with a fuse to form the main circuit protection. The path enabling unit can be implemented by a start button matched to the corresponding voltage level, ensuring that the main circuit is powered on only when both the air switch and the start button are satisfied, thus providing secondary confirmation for power-on and reducing the risk of accidental power-on. The test load module includes two different types of load units. The first load unit is used to perform aging tests on the power regulator under test, and the second load unit is used to perform functional tests on the power regulator under test. The first load unit can be a resistive load box, used to perform long-term aging tests on circuit board components. The second load unit can be a bulb load, and the bulb group can use three bulbs connected in a star configuration to visually check the operating status of the product under test by observing changes in bulb status and combining the readings of a digital voltmeter. The automatic control module is used to output control signals to the power regulator under test and automatically adjust the output state of the control signals according to preset parameters to simulate the working conditions of the power regulator under test. For example, the automatic control module can use a temperature controller as the control core and cooperate with a thermocouple to detect the temperature at the load end. The temperature controller can output 4-20mA, 0-10V and 10-32V switching signals for solid-state contactors, and perform PID adjustment based on PV (actual value) and SV (set value) to realize automatic control of the power regulator under test or solid-state contactor. The test interface module is used to electrically connect the main power supply terminal, load terminal, and control terminal of the power regulator under test to the multi-voltage power supply module, the test load module, and the automatic control module, respectively. In this embodiment, the main power supply terminal of the power regulator under test can be connected to the selected voltage path of the multi-voltage power supply module through the RST terminal, and the load terminal of the power regulator under test can be connected to the test load module through the UVW terminal. The control terminal is used to receive the control signal output by the automatic control module, thereby forming a test connection relationship between the main power supply, the object under test, the load, and the control signal.

[0024] The multi-voltage power supply module is used to provide at least four different voltage levels, including adjustable voltage levels and multiple fixed voltage levels.

[0025] Specifically, the multi-voltage power supply module of the test machine integrates multiple power output structures within the same device to simultaneously generate test power supplies of various voltage levels. The multi-voltage power supply module has at least four independent power supply paths, each corresponding to a preset output voltage level. One power supply path is used to output an adjustable voltage. The input of this power supply path is connected to a regulating power supply device, and its output is led out through an independent power supply circuit, so that the output voltage can be continuously varied within a preset range. The remaining power supply paths are used to output a fixed voltage. These power supply paths are respectively connected to a fixed voltage power supply device and led out through their respective independent circuits to form a stable standard test voltage output. That is, each power supply path is electrically isolated from each other, and is connected to the subsequent control and protection circuits, and is uniformly connected to the output area of ​​the test machine. During the test, by selecting one of the power supply paths to connect to the power regulator under test, the power regulator under test can receive power input of different voltage levels at different test stages, thereby completing the testing of products of different specifications in the same test equipment.

[0026] The multi-voltage power supply module includes a voltage regulating unit and a voltage transforming unit, wherein the voltage regulating unit is used to provide adjustable voltage levels and the voltage transforming unit is used to provide fixed voltage levels.

[0027] Specifically, the multi-voltage power supply module includes a voltage regulation unit and a voltage transformation unit, which are used to form different types of voltage outputs and together constitute the power input section of the test machine; The voltage regulating unit is set in an independent power supply path of the multi-voltage power supply module. Its input terminal is connected to an external power supply, and its output terminal is connected to the subsequent circuit of the corresponding power supply path. The voltage regulating unit can continuously adjust its output voltage so that the power supply path can output a voltage value that varies within a preset range, thereby providing power input for the working conditions that require step-by-step voltage changes or fine adjustment during the test process. The transformer unit is located in the other power supply paths of the multi-voltage power supply module. Its input terminal is also connected to an external power supply, and its output terminal is connected to multiple fixed voltage power supply paths. The transformer unit forms several fixed voltage outputs through different output windings or output ports. Each fixed voltage output is led out through the corresponding power supply path to provide a stable standard test voltage to the power regulator under test. Structurally, the voltage regulating unit and the transformer unit are connected to the output side of the multi-voltage power supply module through their respective power supply paths. Each power supply path is electrically independent, so that adjustable voltage output and fixed voltage output can coexist in the same test equipment and can be selectively connected to the power regulator under test as needed during the test.

[0028] The safety power-on control module is used to ensure that only one power supply path is connected at any given time, preventing multiple voltage levels from simultaneously supplying power to the power regulator under test.

[0029] Specifically, the power supply paths corresponding to each voltage level are set independently in the multi-voltage power supply module. Each power supply path is equipped with an execution switch element for controlling the on / off state of the path. The execution switch elements are set in the main power supply circuit of each power supply path to control whether the corresponding voltage level is connected to the test output terminal. The execution switching elements of each power supply path are configured to operate in a mutually exclusive state in the control loop. That is, when the execution switching element of one power supply path is in the on state, the execution switching elements of the other power supply paths are restricted to the off state. The mutual exclusion relationship is achieved through the interlocking connection in the control loop, so that an exclusive control relationship is formed between different power supply paths. During the test, when a certain voltage level is selected for testing, only the power supply path corresponding to that voltage level is allowed to be connected, while the other power supply paths remain disconnected. This ensures that the test output terminal receives only a single voltage level of power input at any given time, preventing multiple voltages from being applied to the power regulator under test simultaneously.

[0030] The main power-on control unit is connected to each channel enable unit via electrical interlocking. Each channel enable unit controls the execution switch element in the corresponding power supply channel.

[0031] Specifically, the main power-on control unit is located on the power input side of the test machine to control the overall power supply status of the test machine. The corresponding enable unit for each power supply path is located in the control loop to select power supply paths of different voltage levels. The execution switch element in each power supply path is located in the main power supply loop of the corresponding power supply path to control the on / off state of the power supply path. The output of the main power-on control unit is connected to the control circuit of each power supply path. When the main power-on control unit is in the off state, the control circuit of each power supply path does not have the driving conditions, and the corresponding execution switch element remains in the off state. When the main power-on control unit is turned on, the control circuit of each power supply path obtains working power, but it still needs to be selected and controlled by the path enable unit before it can drive the execution switch element in the corresponding power supply path to operate. During the test, when the path enabling unit issues an enabling command to a certain power supply path, the control circuit corresponding to that power supply path is connected, thereby driving the corresponding execution switch element to switch from the off state to the on state, so that the power supply path is electrically connected to the test output terminal. The execution switch elements of the other power supply paths that are not enabled remain in the off state, thereby realizing hierarchical control and selective connection of the power supply paths.

[0032] The first load unit is a resistive load unit, used for aging tests of the power regulator under test by long-term power-on operation.

[0033] Specifically, the first load unit in the test load module is set as a resistive load structure and is electrically connected to the load terminal of the power regulator under test through the corresponding test interface. During the test, the output terminal of the power regulator under test supplies power to the first load unit, so that the first load unit is connected to the working circuit of the power regulator under test as an energy consumption circuit. The first load unit is configured to withstand the voltage and power output by the power regulator under test for a relatively long period of time. Its resistive characteristics make the load current change stably with the output voltage, thereby providing the power regulator under test with continuous and predictable load conditions. During the aging test, the power regulator under test runs continuously under the selected voltage level and control signal. Its output power is input to the first load unit through the load terminal and consumed, so that the power regulator under test can work for a long time under conditions close to actual use. By setting the first load unit as a resistive load and directly connecting it to the load circuit of the power regulator under test, the tester can perform continuous power-on operation tests on the power regulator under test without manual intervention, thereby completing the aging test for the circuit board components.

[0034] The second load unit is a visual load unit, used to intuitively judge the working status of the power regulator under test by the changes in load status during the functional testing process.

[0035] Specifically, the second load unit in the test load module is set as a visual load structure and is electrically connected to the load end of the power regulator under test through the test interface. The second load unit and the first load unit are set separately in structure and are switched to connect according to the test mode during the test, so that the output of the power regulator under test can be selectively loaded to the visual load. The second load unit includes multiple light-emitting load elements. The light-emitting load elements form a load circuit according to a preset connection method and are electrically connected to the load terminal of the power regulator under test. When the output voltage or conduction state of the power regulator under test changes, the output power is input into the second load unit through the load terminal, causing the working state of the light-emitting load elements to change accordingly. During the functional testing process, the power regulator under test changes its output state under the action of the control signal. The output change is directly reflected by the working state of the second load unit, and the output state can be confirmed by the voltage display unit at the load end. By setting the second load unit as a visual load structure, the tester can intuitively present the output status of the power regulator under test during the functional testing phase.

[0036] The automatic control module includes a feedback acquisition unit and a control calculation unit. The control calculation unit performs closed-loop adjustment of the control signal based on the parameter information acquired by the feedback acquisition unit.

[0037] Specifically, the automatic control module includes a parameter acquisition unit, a control calculation unit, and a control signal output channel. The parameter acquisition unit is connected to the test load module and is used to acquire feedback parameters that reflect the operating status of the power regulator under test. The feedback parameters can come from the detection elements in the load circuit or detection signals related to the load operating status. The output of the parameter acquisition unit is connected to the input of the control calculation unit. The acquired feedback parameters are input to the control calculation unit as actual operating parameters. The control calculation unit stores preset target parameters and performs calculations based on the deviation between the actual operating parameters and the target parameters to generate control quantities corresponding to the operating state of the power regulator under test. The output of the control calculation unit is connected to the control terminal of the power regulator under test through the control signal output channel, so that the control quantity is output to the power regulator under test in the form of a control signal. When the output state of the power regulator under test changes, the feedback parameters collected by the parameter acquisition unit change accordingly. The control calculation unit recalculates the control quantity and updates the output control signal according to the new feedback parameters, thereby forming a closed-loop control structure based on the load operating state during the test.

[0038] The automatic control module is used to output at least one analog control signal and a digital control signal to adapt to different types of power regulators or solid-state contactors.

[0039] Specifically, the control signal output channel of the automatic control module includes multiple signal output paths, each corresponding to a different form of control signal. The control processing unit selects at least one of these signal output paths based on the test requirements, converts the generated control quantity into the corresponding form of control signal, and outputs it. One type of signal output path is used to output continuously changing control signals, which are used to adjust the conduction state or output power of the power regulator under test. The other type of signal output path is used to output discrete control signals, which are used to control the on / off state of the tested object such as the solid-state contactor. The different forms of control signals are sent to the test interface module through the corresponding signal output channels and connected to the control terminal of the power regulator or solid-state contactor under test. During the testing process, the automatic control module can select and enable the corresponding signal output path according to the type of the object under test and its control method, so that the same test machine can be adapted to test objects with different control methods without changing the overall structure.

[0040] The test interface module includes an insulated connection interface, which is used to establish a safe electrical connection between the power regulator under test and the test machine during the test.

[0041] Specifically, the test interface module is located in the external connection area of ​​the test machine to realize the electrical connection between the power regulator under test and the various functional modules of the test machine. The test interface module is equipped with a main power connection interface, a load connection interface and a control signal connection interface. Each interface is structurally independent and is electrically connected to the multi-voltage power supply module, the test load module and the automatic control module respectively. The main power connection interface is used to introduce the output power of the selected power supply path into the main power terminal of the power regulator under test. The load connection interface is used to connect the load terminal of the power regulator under test to the test load module, so that the output of the power regulator under test can be loaded to the corresponding load unit. The control signal connection interface is used to introduce the control signal output by the automatic control module into the control terminal of the power regulator under test or the solid contactor. Each connection interface is equipped with an insulating structure, which isolates the conductive parts of the interface when connected. This isolates the live parts from the external environment during wiring and testing. With the above interface configuration, the power regulator under test can form a stable electrical connection with the test machine after the wiring is completed, so that the power supply, load and control signals can be transmitted between the test machine and the object under test according to the predetermined path.

[0042] like Figure 5 Example of a typical test process (using a 380V main power supply, a 4–20mA control signal, and a star-shaped bulb load as an example): In this embodiment, the test process of the power regulator under test in a specific test scenario is described below in conjunction with the main circuit structure of the aging test machine. The test object is a power regulator with a 4-20mA analog control signal, the rated voltage of the main power supply is 380V, and the load is a star-connected bulb load group.

[0043] Before the test begins, the test machine is powered off. The main power supply terminal of the power regulator under test is connected to the main power supply interface of the test machine through the test interface module, with the main power input terminal connected to the RST terminal; the load terminal of the power regulator under test is connected to the bulb load group through the load connection interface, corresponding to the UVW terminals; the control terminal of the power regulator under test is connected to the analog control signal output channel of the automatic control module through the control signal connection interface, and an auxiliary power supply is also connected to the thyristor pulse drive circuit of the power regulator under test.

[0044] After completing the wiring, first connect the auxiliary power supply to the pulse drive circuit of the power regulator under test to enable the thyristor pulse circuit to enter the working state. In this state, the initial operating status of the power regulator under test is detected by the status of the indicator lights on the power regulator under test. The running indicator light and the main power status indicator light should show the expected status. If the indicator light status is abnormal, it can be determined that there is an abnormality in the power regulator under test.

[0045] After confirming that the pulse drive circuit is working properly, the main power supply is connected to the power regulator under test. Upon detecting a change in the main power input state, the tester switches the main power path. At this time, without inputting a control signal to the power regulator under test, the system checks whether there is voltage input to the bulb load group. If the bulb load group lights up or voltage is detected at the load terminal without a control signal, it can be determined that the power regulator under test has an abnormal conduction condition.

[0046] After confirming no abnormal output at the load terminal under no control signal conditions, a 4–20mA analog control signal is input to the power regulator under test via the automatic control module to adjust the conduction angle of the thyristor. During this stage, the output status of the power regulator under test can be detected by observing the brightness changes of the bulb load group and combining this with the display results from the load terminal voltage display unit. For example, when the automatic control module outputs a 20mA control signal, the load terminal voltage display unit should display the output voltage corresponding to the selected main power supply level.

[0047] During the test, if there are obvious abnormalities in the brightness of the bulb load, a mismatch between the voltage display value at the load end and the conduction state corresponding to the control signal, or a missing phase lighting up in the star-connected bulb load group, it can be determined that the power regulator under test does not meet the test requirements.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power regulator aging test machine, characterized in that, include: The multi-voltage power supply module provides multiple test power supplies of different voltage levels in the same test equipment, with each voltage level output through an independent power supply path; A safety power-on control module is located between the multi-voltage power supply module and the test output terminal. The safety power-on control module includes a main power-on control unit and a path enable unit corresponding to each voltage level. Specifically, the power supply path for the corresponding voltage level is connected only when the main power-on control unit is in the enabled state and the selected path enable unit is triggered. The test load module includes two different types of load units, wherein the first load unit is used to perform aging tests on the power regulator under test, and the second load unit is used to perform functional tests on the power regulator under test. The automatic control module outputs control signals to the power regulator under test and automatically adjusts the output state of the control signals according to preset parameters to simulate the working conditions of the power regulator under test. The test interface module electrically connects the main power supply terminal, load terminal, and control terminal of the power regulator under test to the multi-voltage power supply module, the test load module, and the automatic control module, respectively.

2. The power regulator aging test machine according to claim 1, characterized in that, The multi-voltage power supply module is used to provide at least four different voltage levels, including adjustable voltage levels and multiple fixed voltage levels.

3. The power regulator aging test machine according to claim 2, characterized in that, The multi-voltage power supply module includes a voltage regulating unit and a voltage transforming unit, wherein the voltage regulating unit is used to provide the adjustable voltage level, and the voltage transforming unit is used to provide the fixed voltage level.

4. The power regulator aging test machine according to claim 1, characterized in that, The safety power-on control module is used to allow only one power supply path to be in the on state at any given time, preventing multiple voltage levels from supplying power to the power regulator under test at the same time.

5. The power regulator aging test machine according to claim 4, characterized in that, The main power-on control unit is connected to each of the aforementioned path enabling units via an electrical interlock, and the path enabling units control the execution switching elements in their respective power supply paths.

6. The power regulator aging test machine according to claim 1, characterized in that, The first load unit is a resistive load unit, used for aging tests of the power regulator under test by long-term power-on operation.

7. The power regulator aging test machine according to claim 6, characterized in that, The second load unit is a visual load unit, used to intuitively judge the working status of the power regulator under test by the changes in load status during the functional testing process.

8. The power regulator aging test machine according to claim 1, characterized in that, The automatic control module includes a feedback acquisition unit and a control calculation unit. The control calculation unit performs closed-loop adjustment of the control signal based on the parameter information acquired by the feedback acquisition unit.

9. The power regulator aging test machine according to claim 8, characterized in that, The automatic control module is used to output at least one analog control signal and a digital control signal to adapt to different types of power regulators or solid-state contactors.

10. The power regulator aging test machine according to claim 1, characterized in that, The test interface module includes an insulated connection interface, which is used to establish a safe electrical connection between the power regulator under test and the test machine during the test.

Images