A voltage conversion device

Abstract

The present disclosure relates to a voltage conversion device. The device includes a first winding, a first core, a second winding, a second core and a motion adjustment mechanism. The first winding is arranged on the first core and is configured as the primary side of the voltage conversion device; the second winding is arranged on the second core and is configured as the secondary side of the voltage conversion device, and the second core rotates relative to the first core under the action of the rotating magnetic field generated by the first winding; the motion adjustment mechanism is used to output a force to the second core to adjust the motion state of the second core relative to the first core, and output a force to prevent the second core from moving relative to the first core during the period when the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment. The technical solution of the embodiment of the present disclosure can achieve the effect of continuously adjusting the output signal of the voltage conversion device under power, solving the problem in the related art that the output voltage cannot be continuously adjusted under power to meet different power requirements.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to voltage regulation technology, and more particularly to a voltage conversion device. Background Art

[0002] Voltage conversion devices are widely used in the generation, transmission, transformation, distribution and consumption of alternating current to achieve conversion between different voltage amplitudes, phases or frequencies.

[0003] In the related art, in order to obtain an output voltage that meets power requirements, the input voltages of two (or more) transformers are usually coupled and superimposed to obtain an output voltage that meets the requirements. Figure 1 The schematic diagram of a voltage change device in the related art is a voltage change device 11, wherein the voltage change device 11 uses the input voltage of two transformers (111, 112) to couple to obtain an output voltage that meets the power requirements. Figure 1 As shown, the primary winding of a transformer 111 is connected to the A phase of the three-phase AC power 12 and the neutral line N, the primary winding of another transformer 112 is connected to the B phase of the three-phase AC power 12 and the neutral line N, and the secondary windings of the two transformers (111, 112) are connected in series. Under this wiring method, the input voltages Ua and Ub are coupled and superimposed to obtain the output voltage Uo. However, using this method, one wiring method can only obtain an output voltage that meets one power requirement. If you want to obtain an output voltage that meets different power requirements, you need to power off the transformer and change the wiring method. Therefore, the solution of the related art cannot continuously adjust the output voltage to meet different power requirements. Summary of the invention

[0004] The embodiment of the present disclosure provides a voltage conversion device to at least solve the problem in the related art that the output voltage cannot be continuously adjusted with power on. The technical solution of the present disclosure is as follows:

[0005] The present disclosure provides a voltage conversion device, including:

[0006] A first winding, disposed on the first core, configured as a primary side of the voltage conversion device;

[0007] A second winding, disposed on a second core, configured as a secondary side of the voltage conversion device, wherein the second core rotates relative to the first core under the action of a rotating magnetic field generated by the first winding;

[0008] The motion adjustment mechanism is used to output a force to the second iron core to adjust the motion state of the second iron core relative to the first iron core, and output a force to prevent the second iron core from moving relative to the first iron core during the period when the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment.

[0009] Optionally, the motion adjustment mechanism includes a first driving mechanism and a locking mechanism:

[0010] The first driving mechanism is configured to detect a first feedback signal, where the first feedback signal is used to indicate whether the phase of the output signal meets the requirement of the electrical device;

[0011] If the first feedback signal satisfies a first preset condition, the locking mechanism is controlled to output a first resistance for preventing the second iron core from rotating relative to the first iron core, so that the angle between the second winding and the first winding is maintained at an angle value that meets the requirements of the electrical device;

[0012] The locking mechanism is used to output a first resistance under the control of the first driving mechanism to prevent the second iron core from rotating relative to the first iron core.

[0013] Optionally, the first driving mechanism is further configured to perform:

[0014] If the first feedback signal satisfies a second preset condition, the locking mechanism is controlled to output a second resistance for preventing the second iron core from rotating relative to the first iron core, and the second resistance is smaller than the first resistance.

[0015] Optionally, the motion adjustment mechanism comprises:

[0016] a first comparator, wherein the input end of the first comparator receives a first feedback signal and a preset first voltage threshold signal respectively, and is used to compare the first feedback signal with the first voltage threshold signal, and output a first comparison signal, wherein the first feedback signal is used to indicate whether the phase of the output signal meets the requirement of the electrical device;

[0017] a first driving mechanism, the first driving mechanism being electrically connected to an output end of the first comparator and configured to receive the first comparison signal and control the locking mechanism to output a first resistance corresponding to the first comparison signal;

[0018] A locking mechanism, the locking mechanism is electrically connected to the first driving mechanism, and is used to output the first resistance under the control of the first driving mechanism to prevent the second iron core from rotating relative to the first iron core.

[0019] Optionally, the motion adjustment mechanism further includes:

[0020] a second comparator, wherein an input terminal of the second comparator receives the first feedback signal and a preset second voltage threshold signal respectively, and is used to compare the first feedback signal with the second voltage threshold signal, and output a second comparison signal;

[0021] A first AND gate, the first AND gate being electrically connected to an output terminal of the first comparator and an output terminal of the second comparator respectively, and being used for performing a logic AND operation on the first comparison signal and the second comparison signal, and outputting a first operation result signal;

[0022] Furthermore, the first driving mechanism is electrically connected to the output end of the first AND gate, and is used to receive the first operation result signal and control the locking mechanism to output a second resistance corresponding to the first operation result signal, wherein the second resistance is smaller than the first resistance.

[0023] Optionally, the motion adjustment mechanism includes a detection unit;

[0024] The detection unit is configured to detect whether the output signal meets the requirements of the electrical device, and output the first feedback signal to the first comparator and the second comparator according to the detection result.

[0025] Optionally, the voltage conversion device further includes:

[0026] A rotating shaft, fixedly connected to the second iron core, the rotating shaft and the second iron core rotate synchronously;

[0027] The locking mechanism is used to output the first resistance or the second resistance under the control of the first driving mechanism to prevent the rotational movement of the rotating shaft.

[0028] Optionally, the voltage conversion device further comprises a dial having scale lines, each scale line corresponding to an angle value, for displaying the angle between the second winding and the first winding.

[0029] Optionally, the voltage conversion device further includes:

[0030] A third iron core is disposed adjacent to the second iron core and is used to provide a magnetic circuit for the rotating magnetic field when the third iron core is located in the rotating magnetic field generated by the first winding.

[0031] Optionally, the third core is made of the same material and has the same shape as the second core.

[0032] Optionally, the motion adjustment mechanism comprises:

[0033] A second driving mechanism is configured to detect a second feedback signal, where the second feedback signal is used to indicate whether the amplitude of the output signal meets the requirement of the electrical device;

[0034] If the second feedback signal satisfies a third preset condition, a first power is output to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a first distance.

[0035] Optionally, the second driving mechanism is further configured to perform:

[0036] If the second feedback signal satisfies a fourth preset condition, a second power is output to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a second distance, which is smaller than the first distance.

[0037] Optionally, the motion adjustment mechanism comprises:

[0038] a third comparator, wherein the input end of the third comparator receives the second feedback signal and the preset third voltage threshold signal respectively, and is used to compare the second feedback signal with the third voltage threshold signal, and output a third comparison result, wherein the second feedback signal is used to indicate whether the amplitude of the output signal meets the requirement of the electrical device;

[0039] A second driving mechanism, the second driving mechanism is electrically connected to the output end of the third comparator, and is used to receive the third comparison result and output a first power corresponding to the third comparison result to drive the third iron core and the second iron core to move a first distance axially relative to the first iron core.

[0040] Optionally, the motion adjustment mechanism further includes:

[0041] a fourth comparator, wherein an input terminal of the fourth comparator receives the second feedback signal and a preset fourth voltage threshold signal respectively, and is used to compare the second feedback signal with the fourth voltage threshold signal and output a fourth comparison result;

[0042] a second AND gate, the second AND gate being electrically connected to the output end of the third comparator and the output end of the fourth comparator respectively, and being used for performing a logic AND operation on the third comparison signal and the fourth comparison signal, and outputting a second result signal;

[0043] Furthermore, the second driving mechanism is electrically connected to the output end of the second AND gate, and is used to receive a second result signal and output a second power corresponding to the second result signal to drive the third iron core and the second iron core to move axially a second distance relative to the first iron core, and the second distance is smaller than the first distance.

[0044] Optionally, the motion adjustment mechanism includes a detection unit;

[0045] The detection unit is configured to detect whether the output signal meets the requirements of the electrical device, and output the second feedback signal to the third comparator and the fourth comparator according to the detection result.

[0046] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects: when the first winding is connected to alternating current, the motion state of the second iron core relative to the first iron core is adjusted by the motion adjustment mechanism, thereby adjusting the angle between the second winding and the first winding or the degree of coupling between the second winding and the first winding, and outputting a force to prevent the second iron core from moving relative to the first iron core during the period when the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment, thereby achieving the effect of continuously adjusting the output signal of the voltage conversion device under power.

[0047] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description are used to explain the principles of the present disclosure, and do not constitute improper limitations on the present disclosure.

[0049] Figure 1 It is a schematic diagram of a voltage changing device in the related art.

[0050] Figure 2a It is a schematic structural diagram of a voltage conversion device according to an exemplary embodiment.

[0051] Figure 2b It is a schematic structural diagram of another voltage conversion device according to an exemplary embodiment.

[0052] Figure 3a is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0053] Figure 3b is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0054] Figure 4a is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0055] Figure 4b is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0056] Figure 5 The figure is a schematic diagram of a dial in a voltage conversion device according to an exemplary embodiment.

[0057] Figure 6a is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0058] Figure 6bis a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment.

[0059] Figure 6c is a schematic structural diagram of yet another voltage conversion device according to an exemplary embodiment. DETAILED DESCRIPTION

[0060] In order to enable ordinary persons in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0062] Figure 2a It is a schematic structural diagram of a voltage conversion device according to an exemplary embodiment. Figure 2a Taking a voltage conversion device with a three-phase winding and a pair of magnetic poles as an example, the voltage conversion device may have more magnetic poles, which is not specifically limited in the embodiments of the present disclosure. Figure 2a As shown, the voltage conversion device comprises:

[0063] The first winding 21 is provided on the first core 22 and is configured as the primary side of the voltage conversion device;

[0064] The second winding 23 is disposed on the second core 24 and is configured as the secondary side of the voltage conversion device. The second core 24 rotates relative to the first core 22 under the action of the rotating magnetic field generated by the first winding 21 ( Figure 2a The middle arrow indicates the rotation direction of the second core 24);

[0065] The motion adjustment mechanism 25 is used to output a force to the second core 24 to adjust the motion state of the second core 24 relative to the first core 22, and output a force to prevent the second core 24 from moving relative to the first core 22 during the period when the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment.

[0066] Among them, the motion state is used to describe the motion of the second core relative to the first core in the voltage conversion device. Alternatively, since the winding is arranged on the core, the motion state can also be used to describe the motion of the second winding relative to the first winding. In the embodiment of the present disclosure, the motion state includes at least a rotational motion state and an axial motion state. For example, the rotational motion state includes the motion state of the second core or the second winding rotating relative to the first core or the first winding under the action of the Ampere force, or the static state of the second core or the second winding being fixed when rotating to a certain position. The axial motion state includes the motion state of the second core or the second winding axially moving relative to the first core or the first winding, or the static state of the second core or the second winding being fixed when moving axially to a certain position.

[0067] It should be noted that, under a given input voltage, any device that changes one or more elements of the output voltage can be called a voltage conversion device or a voltage transformation device. Among them, the elements of the output voltage include amplitude, phase and frequency. The voltage conversion device includes a primary side and a secondary side. The primary side of the voltage conversion device is the input side of the voltage, and the secondary side of the voltage conversion device is the output side of the voltage after conversion by the voltage conversion device.

[0068] In an exemplary embodiment, the first core is formed by stacking annular silicon steel sheets with through grooves (i.e., grooves without closed ends) on the inner surface. A first winding is placed on the first core. For example, after the first winding is wound into various coils, it is embedded in the through groove of the first core. The first winding is insulated from the first core, the first windings of each phase are insulated from each other, and the turns of the first winding of each phase are insulated from each other. The second core is formed by stacking silicon steel sheets with teeth and grooves evenly distributed on the outer circle. A second winding is placed on the second core. For example, after the second winding is wound into various coils, it is embedded in the groove between two teeth of the second core. The second winding is insulated from the second core, the second windings of each phase are insulated from each other, and the turns of the second winding of each phase are insulated from each other. The second core is inserted into the first core, and the first winding is configured as the primary side and the second winding is configured as the secondary side to form a voltage conversion device. It should be noted that the first core is fixed to the housing of the voltage conversion device, that is, the first core and the first winding are both fixed.

[0069] After the first winding is connected to the three-phase AC power, a rotating magnetic field is generated at the air gap between the first core and the second core, and the speed of the rotating magnetic field is equal to the synchronous speed. The synchronous speed is used to represent the speed of the rotating magnetic field, and its value is determined by the frequency of the AC power supply and the number of magnetic poles of the magnetic field. For example, the synchronous speed n1 can be calculated using the following formula:

[0070] n1=60f / P

[0071] Wherein, f represents the frequency of the current of the AC power supply; P represents the number of magnetic pole pairs generated by the first winding, and the number of magnetic pole pairs generated by the first winding is determined by the arrangement of the windings.

[0072] The second winding is in the rotating magnetic field and cuts the magnetic flux lines, thereby generating an induced potential in the second winding, and then generating an induced current. Since the current-carrying conductor moves in the magnetic field due to the Ampere force, the second core rotates relative to the first core in the rotating magnetic field generated by the first winding due to the Ampere force.

[0073] In the disclosed embodiment, the motion adjustment mechanism is a mechanism for adjusting the motion state of the second core relative to the first core when the first winding is connected to alternating current. For example, the motion adjustment mechanism is used to adjust the speed of the rotational motion of the second core relative to the first core until the speed of the rotational motion is adjusted to zero when the second core rotates to a certain position, so that the angle between the second winding and the first winding is fixed. Since the physical angle between the second winding and the first winding is related to the phase angle of the voltage output by the second winding, the phase angle of the output signal can be adjusted by adjusting the physical angle between the second winding and the first winding. Alternatively, since the degree of coupling between the second winding and the first winding is related to the amplitude of the voltage output by the second winding, the amplitude of the output signal is adjusted by adjusting the degree of coupling between the second winding and the first winding through the motion adjustment mechanism.

[0074] The technical solution of the embodiment of the present disclosure is to set the first winding on the first iron core, set the second winding on the second iron core, and use the first winding as the primary side and the second winding as the secondary side to form a voltage changing device. When the first winding is connected to the alternating current, the motion state of the second iron core relative to the first iron core is adjusted by the motion adjustment mechanism, so as to achieve the effect of adjusting the angle between the second winding and the first winding or the coupling degree between the second winding and the first winding, and output a force to prevent the second iron core from moving relative to the first iron core during the period when the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment, so as to achieve the effect of continuously adjusting the output signal of the voltage conversion device under power, and solve the problem that the output voltage cannot be continuously adjusted under power to meet different power requirements in the related art.

[0075] In an exemplary embodiment, the motion adjustment mechanism of the voltage conversion device includes a first driving mechanism and a locking mechanism.

[0076] Figure 2b FIG. 1 is a schematic diagram showing the structure of another voltage conversion device according to an exemplary embodiment. Figure 2bAs shown, the motion adjustment mechanism includes a first driving mechanism 251 and a locking mechanism 252. The first driving mechanism 251 is configured to detect a first feedback signal, and if the first feedback signal meets a first preset condition, the locking mechanism 252 is controlled to output a first resistance to prevent the second core from rotating relative to the first core, so that the angle between the second winding and the first winding is maintained at an angle value that meets the requirements of the electrical device. The locking mechanism 252 is used to output a first resistance under the control of the first driving mechanism 251 to prevent the second core from rotating relative to the first core.

[0077] It should be noted that the first feedback signal is used to indicate whether the phase of the output signal of the voltage conversion device meets the requirements of the electrical equipment. For example, if the first feedback signal is a voltage greater than or equal to the first voltage threshold, it is determined that the phase of the output signal of the voltage conversion device meets the requirements of the electrical equipment. If the first feedback signal is a voltage less than the first voltage threshold, it is determined that the phase of the output signal of the voltage conversion device does not meet the requirements of the electrical equipment. The value of the first voltage threshold signal can be determined according to the actual application scenario.

[0078] The first preset condition is a condition indicating whether the phase of the output signal meets the requirements of the electrical equipment. In the embodiment of the present disclosure, the first drive mechanism matches the first feedback signal and the first preset condition to determine whether to control the locking mechanism to output the first resistance. For example, the first preset condition may be that if the first feedback signal is greater than or equal to the first voltage threshold signal, the locking mechanism is controlled to output the first resistance. It should be noted that the locking mechanism is used to adjust the speed of the rotational movement of the second core relative to the first core. The meaning of adjustment may be to make the speed of the rotational movement of the second core relative to the first core zero, that is, to prevent the rotational movement of the second core relative to the first core. The meaning of adjustment may also be to reduce the speed of the rotational movement of the second core relative to the first core.

[0079] It should be noted that there are many ways to compare the first feedback signal with the first voltage threshold signal, which is not specifically limited in the embodiments of the present disclosure. For example, the first feedback signal and the first voltage threshold signal are compared by a comparator. If the voltage value of the first feedback signal is less than the first voltage threshold, the comparator outputs 1, otherwise, the comparator outputs 0.

[0080] Figure 3a FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 3aAs shown, the voltage conversion device includes a first winding 31, a first iron core 32, a second winding 33, a second iron core 34, a first comparator 37, a first driving mechanism 36 and a locking mechanism 35. Among them, the structures and connection relationships of the first winding 31, the first iron core 32, the second winding 33 and the second iron core 34 are the same as those in the above embodiment, and are not repeated here. The input end of the first comparator 37 receives the first feedback signal and the preset first voltage threshold signal respectively, and is used to compare the first feedback signal and the first voltage threshold signal, and output a first comparison signal. The first driving mechanism 36 is connected to the output end of the first comparator 37, and is used to receive the first comparison signal and control the locking mechanism 35 to output a first resistance corresponding to the first comparison signal. The locking mechanism 35 is electrically connected to the first driving mechanism 36, and is used to output a first resistance under the control of the first driving mechanism 36 to prevent the second iron core 34 from rotating relative to the first iron core 32.

[0081] Optionally, the voltage conversion device also includes a detection unit. The detection unit is electrically connected to the output terminal of the second winding, and is used to detect whether the output signal of the second winding meets the requirements of the electrical device. If the phase of the output signal meets the requirements of the electrical device, the first feedback signal is output to the first comparator, or the first feedback signal is output to the first comparator and the second comparator respectively. If the amplitude of the output signal meets the requirements of the electrical device, the second feedback signal is output to the third comparator, or the second feedback signal is output to the third comparator and the fourth comparator. Alternatively, the detection unit can also be connected to the first drive mechanism and / or the second drive mechanism respectively, and output the first feedback signal or the second feedback signal to the first drive mechanism or the second drive mechanism.

[0082] Optionally, after the electrical equipment is connected to the voltage conversion device, it detects whether the output signal of the voltage conversion device meets the power consumption requirements, and outputs the first feedback signal or the second feedback signal according to the detection result. Similarly, the first feedback signal can be output to the first comparator, or to the first comparator and the second comparator respectively, or to the first drive mechanism. The second feedback signal can be output to the third comparator, or to the third comparator and the fourth comparator respectively, or to the second drive mechanism.

[0083] Exemplarily, outputting the first feedback signal includes: if it is detected that the phase angle of the output signal meets the phase requirement of the electrical device, the output voltage value is greater than or equal to the first feedback signal of the first voltage threshold signal. If the difference between the phase angle of the output signal and the phase angle required by the electrical device is within a set numerical range, the output voltage value is greater than or equal to the first feedback signal of the second voltage threshold signal. If the difference between the phase angle of the output signal and the phase angle required by the electrical device is not within the set numerical range, the output voltage value is less than the first feedback signal of the second voltage threshold signal.

[0084] Exemplarily, outputting the second feedback signal includes: if it is detected that the amplitude of the output signal meets the amplitude requirement of the electrical device, then outputting a second feedback signal whose voltage value is greater than or equal to the third voltage threshold. If the difference between the amplitude of the output signal and the amplitude required by the electrical device is within a set numerical range, then outputting a second feedback signal whose voltage value is greater than or equal to the fourth voltage threshold. If the difference between the amplitude of the output signal and the amplitude required by the electrical device is not within the set numerical range, then outputting a second feedback signal whose voltage value is less than the fourth voltage threshold.

[0085] The value range can be set according to the actual application scenario.

[0086] The technical solution of the embodiment of the present disclosure detects a first feedback signal, and when the first feedback signal meets a first preset condition, controls the locking mechanism to output a first resistance to prevent the second iron core from rotating relative to the first iron core, so that the angle between the second winding and the first winding is maintained at an angle value that meets the requirements of the electrical equipment; if the first feedback signal does not meet the first preset condition, the rotational movement of the second iron core relative to the first iron core is not interfered with, and thus, the angle between the second winding and the first winding can be continuously adjusted, thereby achieving the effect of continuously adjusting the phase angle of the output signal of the second winding under power.

[0087] In an exemplary embodiment, if the first feedback signal does not satisfy the first preset condition, but the first feedback signal satisfies the second preset condition, the locking mechanism is controlled to output a second resistance to prevent the second core from rotating relative to the first core. The second resistance is smaller than the first resistance, that is, the second resistance output by the locking mechanism is not sufficient to stop the second core from rotating, but can slow down the speed of the second core rotating relative to the first core to a certain extent.

[0088] The second preset condition is a condition indicating whether the phase angle of the output signal is close to the phase requirement of the electrical equipment. In the embodiment of the present disclosure, the first drive mechanism matches the first feedback signal and the second preset condition to determine whether to control the locking mechanism to output the second resistance to slow down the rotational movement of the second core relative to the first core. For example, the second preset condition may be that if the first feedback signal is greater than or equal to the second voltage threshold signal (the second voltage threshold corresponding to the second voltage threshold signal is less than the first voltage threshold corresponding to the first voltage threshold signal), and is less than the first voltage threshold signal, the locking mechanism is controlled to output the second resistance to slow down the rotational movement of the second core relative to the first core.

[0089] It should be noted that there are many ways to compare the first feedback signal with the second voltage threshold signal, which are not specifically limited in the embodiments of the present disclosure. For example, the first feedback signal and the second voltage threshold signal are compared by a comparator. If the voltage value of the first feedback signal is higher than or equal to the second voltage threshold signal, the comparator outputs 1, otherwise, the comparator outputs 0.

[0090] Figure 3b FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 3b As shown, the voltage conversion device includes a first winding 31, a first iron core 32, a second winding 33, a second iron core 34 and a motion adjustment mechanism. The motion adjustment mechanism includes a first comparator 37, a second comparator 39, a first AND gate 38, a first drive mechanism 36 and a locking mechanism 35. The input end of the first comparator 37 receives the first feedback signal and the preset first voltage threshold signal respectively, and is used to compare the first feedback signal with the first voltage threshold signal and output a first comparison signal. The input end of the second comparator 39 receives the first feedback signal and the preset second voltage threshold signal respectively, and is used to compare the first feedback signal with the second voltage threshold signal and output a second comparison signal. The first AND gate 38 is electrically connected to the output end of the first comparator 37 and the output end of the second comparator 39 respectively, and is used to perform a logic AND operation on the first comparison signal and the second comparison signal, and output a first operation result signal. The first drive mechanism 36 is electrically connected to the output end of the first AND gate 38, and is used to receive the first operation result signal, and control the locking mechanism 35 to output a second resistance corresponding to the first operation result signal, wherein the second resistance is less than the first resistance. The locking mechanism 35 is electrically connected to the first driving mechanism 36 , and is used for outputting a second resistance under the control of the first driving mechanism to prevent the second iron core 34 from rotating relative to the first iron core 32 .

[0091] If the voltage value of the first feedback signal is less than the second voltage threshold of the second voltage threshold signal, the first comparator outputs 1, the second comparator outputs 0, and the first AND gate outputs 0, that is, outputs a low level. If the voltage value of the first feedback signal is greater than or equal to the second voltage threshold, and the voltage value of the first feedback signal is less than the first voltage threshold signal of the first voltage threshold signal, the first comparator outputs 1, the second comparator outputs 1, and the first AND gate outputs 1, that is, outputs a high level. If the voltage value of the first feedback signal is greater than the first voltage threshold signal, the first comparator outputs 0, the second comparator outputs 1, and the first AND gate inputs 0, that is, a low level. Based on the above analysis, it can be seen that when the first feedback signal meets the second preset condition, the first AND gate outputs a high level, and the first drive mechanism controls the locking mechanism to continuously output the second resistance when detecting that the first operation result signal changes from a low level to a high level, until the first feedback signal meets the first preset condition, the first drive mechanism controls the locking mechanism to output the first resistance that prevents the second core from rotating relative to the first core when detecting that the first operation result signal changes from a high level to a low level, so that the angle between the second winding and the first winding is maintained at an angle value that meets the requirements of the electrical equipment.

[0092] The technical solution of the embodiment of the present disclosure can reduce the rotation speed of the second iron core when the phase angle of the output signal is close to the phase angle required by the electrical equipment, so as to slow down the change rate of the angle between the second winding and the first winding. Therefore, when the phase angle of the output signal meets the phase requirement of the electrical equipment, the locking mechanism can be driven to prevent the second iron core from rotating relative to the first iron core with smaller resistance or shorter time.

[0093] In an exemplary embodiment, the voltage conversion device further includes a rotating shaft, which is fixedly connected to the second core so that the rotating shaft and the second core rotate synchronously, and a locking mechanism, which is used to output the first resistance or the second resistance under the control of the first driving mechanism to prevent the rotation of the rotating shaft.

[0094] Figure 4a FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 4aAs shown, the voltage conversion device includes a first winding 41, a first iron core 42, a second winding 43, a second iron core 44, a rotating shaft 47, a first driving mechanism 46 and a locking mechanism 45. The structures and connection relationships of the first winding 41, the first iron core 42, the second winding 43 and the second iron core 44 are the same as those of the above embodiment, and are not repeated here. The rotating shaft 47 is fixedly connected to the second iron core 44 and can be used to support the weight of the second iron core 44. Since the rotating shaft 47 is fixedly connected to the second iron core 44, the rotating shaft 47 and the second iron core 44 rotate synchronously. The locking mechanism 45 is arranged corresponding to the rotating shaft 47, and is used to output a first resistance or a second resistance under the control of the first driving mechanism 46. For example, if the first feedback signal meets the first preset condition, the first driving mechanism 46 controls the locking mechanism 45 to output the first resistance to prevent the rotational movement of the rotating shaft 47. If the first feedback signal meets the second preset condition, the first driving mechanism 46 controls the locking mechanism 45 to output the second resistance to reduce the speed of the rotating shaft 47 to perform the rotational movement. Exemplarily, the locking mechanism may be a brake structure, or a ratchet structure, etc.

[0095] Optionally, the voltage conversion device also includes a first comparator. Figure 4b FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 4b As shown, the voltage conversion device includes a first winding 41, a first iron core 42, a second winding 43, a second iron core 44, a rotating shaft 47, a first comparator 48, a first drive mechanism 46 and a locking mechanism 45. The structures and connection relationship of the first winding 41, the first iron core 42, the second winding 43 and the second iron core 44 are the same as those in the above-mentioned embodiment, and are not repeated here. The connection relationship and working principle of the first comparator 48 and the first drive mechanism 46 are the same as those in the above-mentioned embodiment, and are not repeated here. The first comparator 48 is used to compare the first feedback signal with the set voltage threshold signal, and output a high level or a low level. It can be determined whether the first feedback signal meets the first preset condition or the second preset condition according to the output signal of the first comparator 48.

[0096] The technical solution of the disclosed embodiment acts on the rotating shaft through a locking mechanism to achieve the effect of adjusting the movement state of the second iron core, and the rotating shaft is separated from the winding, and will not affect the winding during the adjustment process, thereby ensuring that the voltage conversion device outputs a stable voltage signal.

[0097] In an exemplary embodiment, the voltage conversion device further includes a dial. Figure 5 is a schematic diagram of a dial in a voltage conversion device according to an exemplary embodiment. Figure 5As shown, the dial 51 has scale lines, each scale line corresponds to an angle value, which is used to display the angle between the second winding 52 and the first winding 53. It should be noted that the dial 51 can be a transparent dial and is arranged on the housing of the voltage conversion device. Any phase of the first winding 53 is aligned with zero degrees in the dial 51, and the second winding 52 rotates relative to the first winding 53. Assuming that the a phase is aligned with zero degrees, that is, the winding Uia is aligned with zero degrees in the dial, insulating paint is marked on the radial surface of the a phase winding Uoa in the second winding 52 to simulate a pointer, and the angle between the second winding 52 and the first winding 53 can be indicated according to the angle value pointed by the pointer.

[0098] The technical solution of the embodiment of the present disclosure can vividly display the angle value between the first winding and the second winding through the dial.

[0099] In an exemplary embodiment, the voltage conversion device further comprises a third core which is disposed adjacent to the second core and is used to provide a magnetic circuit for the rotating magnetic field when the third core is located in the rotating magnetic field generated by the first winding.

[0100] Optionally, the third core is made of the same material and shape as the second core. For example, the third core is also formed by laminating silicon steel sheets with teeth and slots evenly distributed on the outer circle, so as to provide a magnetic path for the magnetic flux to pass through after the third core enters the rotating magnetic field. Since part of the magnetic flux lines in the rotating magnetic field generated by the first winding enters the third core, the coupling degree between the first winding and the second winding is changed, and then the amplitude of the output signal of the second winding is changed.

[0101] Figure 6a FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 6aAs shown, the voltage conversion device includes a first winding (not shown), a first iron core 61, a second winding (not shown), a second iron core 62, a third iron core 63 and a motion adjustment mechanism 64. The structures and connection relationships of the first winding, the first iron core 61, the second winding and the second iron core 62 are the same as those in the above embodiment, and are not repeated here. The third iron core 63 and the second iron core 62 are arranged adjacent to each other, and are used to provide a magnetic circuit for the rotating magnetic field when the third iron core 63 is located in the rotating magnetic field generated by the first winding. Exemplarily, the motion adjustment mechanism 64 includes: a second driving mechanism 641, which is configured to perform detection of a second feedback signal, and if the second feedback signal meets a third preset condition, outputs a first power that drives the third iron core 63 and the second iron core 62 to move axially relative to the first iron core 61, so as to drive the third iron core 63 and the second iron core 62 to move a first distance. The second driving mechanism 641 is connected to the rotating shaft 65 through a fixing mechanism 642. The first power output by the second driving mechanism 641 is transmitted to the rotating shaft 65 through the fixing mechanism 642, thereby driving the rotating shaft 65 to drive the second iron core 62 and the third iron core 63 to move axially relative to the first iron core 61. Optionally, in order to minimize the complexity of installation, the fixing mechanism 642 can reuse the locking mechanism in the above embodiment.

[0102] It should be noted that the magnetic circuit is a closed path through which the magnetic flux passes. Magnetic flux is a physical quantity that represents the distribution of the magnetic field. For example, the magnetic flux is defined by the integral of the magnetic field over the surface area, including the main magnetic flux and the leakage magnetic flux. The magnetic flux in the core can be called the main magnetic flux, and the magnetic flux in the air surrounding the coil or part of the core can be called the leakage magnetic flux. It should be noted that there are many ways to connect the third core and the second core, and the embodiments of the present disclosure do not specifically limit this. For example, the third core and the second core are fixedly connected by a rotating shaft. Alternatively, the third core and the second core are an integrally formed structure, etc. It should be noted that no winding is placed on the third core and it will not rotate.

[0103] It should be noted that the second feedback signal is used to indicate whether the amplitude of the output signal meets the requirements of the electrical device. For example, if the second feedback signal is greater than or equal to the third voltage threshold, it is determined that the amplitude of the output signal of the voltage conversion device meets the requirements of the electrical device. If the second feedback signal is less than the third voltage threshold, it is determined that the amplitude of the output signal of the voltage conversion device does not meet the requirements of the electrical device. Among them, the value of the third voltage threshold can be determined according to the actual application scenario.

[0104] The third preset condition is a condition indicating whether the amplitude of the output signal meets the requirements of the electrical equipment. In the embodiment of the present disclosure, the second driving mechanism matches the second feedback signal and the third preset condition to determine whether to output the first power that drives the third core and the second core to move axially relative to the first core. For example, the third preset condition may be that if the second feedback signal is greater than or equal to the third voltage threshold, the first power that drives the third core and the second core to move axially relative to the first core is output. It should be noted that the first power can move the third core and the second core axially relative to the first core by a first distance. The second driving mechanism periodically detects the second feedback signal and determines whether to output the first resistance according to the second feedback signal. When the amplitude of the output signal meets the requirements of the electrical equipment for the amplitude, the second feedback signal does not meet the third preset condition and the output of the first resistance is abandoned. Among them, for the detection period of the second feedback signal, if a smaller period value is set, the amplitude of the output voltage of the voltage conversion device can be adjusted to a value that meets the requirements of the electrical equipment more quickly. If a larger period value is used, the amplitude adjustment time of the output voltage of the voltage conversion device will be extended. The specific period value used can be set according to the actual application scenario.

[0105] It should be noted that there are many ways to compare the second feedback signal with the third voltage threshold, which is not specifically limited in the embodiments of the present disclosure. For example, the second feedback signal and the third voltage threshold are compared by a comparator. If the voltage value of the second feedback signal is less than the third voltage threshold, the comparator outputs 1, otherwise, the comparator outputs 0.

[0106] In an exemplary embodiment, the motion adjustment mechanism includes a third comparator and a second drive mechanism. Figure 6b FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 6b As shown, the motion adjustment mechanism 64 includes: a third comparator 643 and a second drive mechanism 641. The input end of the third comparator 643 receives the second feedback signal and the preset third voltage threshold signal respectively, and is used to compare the second feedback signal and the third voltage threshold signal, and output a third comparison result. The second drive mechanism 641 is electrically connected to the output end of the third comparator 643, and is used to receive the third comparison result, and output a first power corresponding to the third comparison result, so as to drive the third iron core 63 and the second iron core 62 to move a first distance relative to the first iron core in the axial direction.

[0107] The second driving mechanism 641 is connected to the rotating shaft 65 through the fixing mechanism 642. The first power output by the second driving mechanism 641 is transmitted to the rotating shaft 65 through the fixing mechanism 642, thereby driving the rotating shaft 65 to drive the second iron core 62 and the third iron core 63 to move axially relative to the first iron core 61. Optionally, in order to minimize the complexity of installation, the fixing mechanism 642 can reuse the locking mechanism in the above embodiment.

[0108] Optionally, the motion adjustment mechanism includes a second driving mechanism. The second driving mechanism is configured to detect the second feedback signal, and if the second feedback signal satisfies a third preset condition, output a first power to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a first distance.

[0109] The technical solution of the embodiment of the present disclosure is to periodically detect the second feedback signal through the second driving mechanism, and when the second feedback signal meets the third preset condition, output the first power to drive the third iron core and the second iron core to move axially relative to the first iron core, so as to drive the third iron core and the second iron core to move a first distance until the amplitude of the output signal meets the requirement of the electrical equipment, thereby achieving the effect of continuously adjusting the amplitude of the output signal of the second winding under power.

[0110] In an exemplary embodiment, if the second feedback signal does not satisfy the third preset condition, but the second feedback signal satisfies the fourth preset condition, a second power is output to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a second distance. The second power is smaller than the first power, so that the third core and the second core move a smaller distance under the drive of the second power, thereby achieving the effect of slowly adjusting the coupling degree between the second winding and the first winding.

[0111] The fourth preset condition is a condition indicating whether the amplitude of the output signal is close to the amplitude requirement of the electrical equipment. In the embodiment of the present disclosure, the second drive mechanism compares the second feedback signal and the fourth preset condition to determine whether to output a second power that drives the third core and the second core to move axially relative to the first core. For example, the fourth preset condition may be that if the second feedback signal is greater than or equal to the fourth voltage threshold (the fourth voltage threshold is less than the third voltage threshold), and is less than the third voltage threshold, then the second power that drives the third core and the second core to move axially relative to the first core is output to drive the third core and the second core to move a second distance.

[0112] It should be noted that there are many ways to compare the second feedback signal with the fourth voltage threshold, which is not specifically limited in the embodiments of the present disclosure. For example, the second feedback signal and the fourth voltage threshold are compared by a comparator. If the voltage value of the second feedback signal is higher than or equal to the fourth voltage threshold, the comparator outputs 1, otherwise, the comparator outputs 0.

[0113] Figure 6c FIG. 1 is a schematic diagram showing a structure of another voltage conversion device according to an exemplary embodiment. Figure 6c As shown, the voltage conversion device includes a first winding (not shown), a first iron core 61, a second winding (not shown), a second iron core 62, a third iron core 63 and a motion adjustment mechanism 64. Among them, the motion adjustment mechanism 64 includes a third comparator 643, a fourth comparator 645, a second AND gate 644 and a second driving mechanism 641. The input end of the third comparator 643 receives the second feedback signal and the preset third voltage threshold signal respectively, and is used to compare the second feedback signal with the third voltage threshold signal and output a third comparison result. The input end of the fourth comparator 645 receives the second feedback signal and the preset fourth voltage threshold signal respectively, and is used to compare the second feedback signal with the fourth voltage threshold signal and output a fourth comparison result. The second AND gate 644 is electrically connected to the output end of the third comparator 643 and the output end of the fourth comparator 645 respectively, and is used to perform a logical AND operation on the third comparison signal and the fourth comparison signal, and output a second result signal. The second driving mechanism 641 is electrically connected to the output end of the second AND gate 644, and is used to receive a second result signal and output a second power corresponding to the second result signal to drive the third iron core 63 and the second iron core 62 to move axially a second distance relative to the first iron core 61, wherein the second distance is smaller than the first distance.

[0114] During the process of the third core moving into the magnetic field of the first core, if the voltage value of the second feedback signal is greater than the third threshold value, the third comparator outputs 0, the fourth comparator outputs 1, and the second AND gate outputs 0, that is, outputs a low level. If the voltage value of the second feedback signal is greater than or equal to the fourth voltage threshold value, and the voltage value of the second feedback signal is less than the third voltage threshold value of the third voltage threshold signal, the third comparator outputs 1, the fourth comparator outputs 1, and the second AND gate outputs 1, that is, outputs a high level. If the voltage value of the second feedback signal is less than the fourth voltage threshold value of the fourth voltage threshold signal, the third comparator outputs 1, the second comparator outputs 0, and the second AND gate outputs 0, that is, outputs a low level. Based on the above analysis, it can be known that when the second operation result signal changes from a low level to a high level (that is, the second feedback signal meets the third preset condition), the second drive mechanism outputs the first power that drives the third core and the second core to move axially relative to the first core, until the second operation result signal changes from a high level to a low level (that is, the second feedback signal meets the fourth preset condition), the magnitude of the output power is adjusted, and the second power that drives the third core and the second core to move axially relative to the first core is output. When the third iron core moves out of the magnetic field of the first iron core, the level change process is opposite to the above process, and the control method is similar, which will not be repeated here.

[0115] The technical solution of the embodiment of the present disclosure can reduce the axial displacement of the third iron core and the second iron core when the amplitude of the output signal is close to the amplitude required by the electrical equipment, so as to reduce the speed of change of the coupling degree between the second winding and the first winding, and can achieve fine-tuning of the coupling degree between the second winding and the first winding to avoid a single movement displacement that is too large, resulting in multiple adjustments required to meet the amplitude requirements of the electrical equipment.

[0116] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0117] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A voltage conversion device, characterized in that: include: A first winding, disposed on the first core, configured as a primary side of the voltage conversion device; A second winding, disposed on a second core, configured as a secondary side of the voltage conversion device, wherein the second core rotates relative to the first core under the action of a rotating magnetic field generated by the first winding; a motion adjustment mechanism, configured to output a force to the second core to adjust the motion state of the second core relative to the first core, and output a force to prevent the second core from moving relative to the first core during a period in which the voltage conversion device outputs an output signal that meets the requirements of the electrical equipment; The motion adjustment mechanism includes a first driving mechanism and a locking mechanism: The first driving mechanism is configured to detect a first feedback signal, where the first feedback signal is used to indicate whether the phase of the output signal meets the requirement of the electrical device; The locking mechanism is used to output a first resistance under the control of the first driving mechanism to prevent the second iron core from rotating relative to the first iron core.

2. The voltage conversion device according to claim 1, characterized in that: If the first feedback signal meets a first preset condition, the locking mechanism is controlled to output a first resistance to prevent the second core from rotating relative to the first core, so that the angle between the second winding and the first winding is maintained at an angle value that meets the requirements of the electrical device.

3. The voltage conversion device according to claim 2, characterized in that: The first drive mechanism is further configured to perform: If the first feedback signal satisfies a second preset condition, the locking mechanism is controlled to output a second resistance for preventing the second iron core from rotating relative to the first iron core, and the second resistance is smaller than the first resistance.

4. The voltage conversion device according to claim 1, characterized in that: The motion adjustment mechanism comprises: a first comparator, wherein the input end of the first comparator receives a first feedback signal and a preset first voltage threshold signal respectively, and is used to compare the first feedback signal with the first voltage threshold signal, and output a first comparison signal, wherein the first feedback signal is used to indicate whether the phase of the output signal meets the requirement of the electrical device; a first driving mechanism, the first driving mechanism being electrically connected to an output end of the first comparator and configured to receive the first comparison signal and control the locking mechanism to output a first resistance corresponding to the first comparison signal; A locking mechanism, the locking mechanism is electrically connected to the first driving mechanism, and is used to output the first resistance under the control of the first driving mechanism to prevent the second iron core from rotating relative to the first iron core.

5. The voltage conversion device according to claim 4, characterized in that: The motion adjustment mechanism also includes: a second comparator, wherein an input terminal of the second comparator receives the first feedback signal and a preset second voltage threshold signal respectively, and is used to compare the first feedback signal with the second voltage threshold signal, and output a second comparison signal; a first AND gate, the first AND gate being electrically connected to an output terminal of the first comparator and an output terminal of the second comparator respectively, and being used for performing a logic AND operation on the first comparison signal and the second comparison signal, and outputting a first operation result signal; Furthermore, the first driving mechanism is electrically connected to the output end of the first AND gate, and is used to receive the first operation result signal and control the locking mechanism to output a second resistance corresponding to the first operation result signal, wherein the second resistance is smaller than the first resistance.

6. The voltage conversion device according to claim 5, characterized in that: The motion adjustment mechanism includes a detection unit; The detection unit is configured to detect whether the output signal meets the requirements of the electrical device, and output the first feedback signal to the first comparator and the second comparator according to the detection result.

7. The voltage conversion device according to any one of claims 2 to 6, characterized in that: The voltage conversion device also includes: A rotating shaft, fixedly connected to the second iron core, wherein the rotating shaft rotates synchronously with the second iron core; The locking mechanism is used to output the first resistance or the second resistance under the control of the first driving mechanism to prevent the rotational movement of the rotating shaft.

8. The voltage conversion device according to claim 1, characterized in that: The voltage conversion device further comprises a dial having scale lines, each scale line corresponding to an angle value, and being used to display the angle between the second winding and the first winding.

9. The voltage conversion device according to claim 1, characterized in that: The voltage conversion device also includes: A third iron core is disposed adjacent to the second iron core and is used to provide a magnetic circuit for the rotating magnetic field when the third iron core is located in the rotating magnetic field generated by the first winding.

10. The voltage conversion device according to claim 9, characterized in that: The third core is made of the same material and has the same shape as the second core.

11. The voltage conversion device according to claim 9, characterized in that: The motion adjustment mechanism comprises: A second driving mechanism is configured to detect a second feedback signal, where the second feedback signal is used to indicate whether the amplitude of the output signal meets the requirement of the electrical device; If the second feedback signal satisfies a third preset condition, a first power is output to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a first distance.

12. The voltage conversion device according to claim 11, characterized in that: The second driving mechanism is further configured to perform: If the second feedback signal satisfies a fourth preset condition, a second power is output to drive the third core and the second core to move axially relative to the first core, so as to drive the third core and the second core to move a second distance, which is smaller than the first distance.

13. The voltage conversion device according to claim 9, characterized in that: The motion adjustment mechanism comprises: a third comparator, wherein the input end of the third comparator receives the second feedback signal and the preset third voltage threshold signal respectively, and is used to compare the second feedback signal with the third voltage threshold signal, and output a third comparison result, wherein the second feedback signal is used to indicate whether the amplitude of the output signal meets the requirement of the electrical device; A second driving mechanism, the second driving mechanism is electrically connected to the output end of the third comparator, and is used to receive the third comparison result and output a first power corresponding to the third comparison result to drive the third iron core and the second iron core to move a first distance axially relative to the first iron core.

14. The voltage conversion device according to claim 13, characterized in that: The motion adjustment mechanism also includes: a fourth comparator, wherein an input terminal of the fourth comparator receives the second feedback signal and a preset fourth voltage threshold signal respectively, and is used to compare the second feedback signal with the fourth voltage threshold signal and output a fourth comparison result; a second AND gate, the second AND gate being electrically connected to the output end of the third comparator and the output end of the fourth comparator respectively, and being used for performing a logic AND operation on the third comparison signal and the fourth comparison signal, and outputting a second result signal; Furthermore, the second driving mechanism is electrically connected to the output end of the second AND gate, and is used to receive a second result signal and output a second power corresponding to the second result signal to drive the third iron core and the second iron core to move axially a second distance relative to the first iron core, and the second distance is smaller than the first distance.

15. The voltage conversion device according to claim 14, characterized in that: The motion adjustment mechanism includes a detection unit; The detection unit is configured to detect whether the output signal meets the requirements of the electrical device, and output the second feedback signal to the third comparator and the fourth comparator according to the detection result.

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