KR102311256B1 - digital power generation system - Google Patents

Abstract

In order to be miniaturized and to minimize energy loss due to heat generation, the present invention provides a rotor unit provided with an electromagnet unit provided with a permanent magnet unit on one side and a voltage control coil on the other side, which is rotatably arranged in power connection to a driving body, and the rotor; a power generation unit including a stator unit wound with an excitation coil in which an inductive magnetic field is formed during negative rotation; a rectifier circuit connected to the excitation coil to convert the AC voltage generated in the excitation coil into a DC voltage; a measuring unit connected to the rectifying unit to measure the DC voltage and current converted by the rectifying unit; a polarity control controller connected to the measuring unit by comparing the voltage measured by the measuring unit with a preset range and selectively applying a voltage to the voltage control coil in either a forward direction or a reverse direction; and a digital output control unit connected to the excitation coil to pass a voltage output in a preset limit range so that the final output voltage is output substantially uniformly.

Description

digital power generation system

The present invention relates to a digital power generation system, and more particularly, to a digital power generation system that is miniaturized and minimizes energy loss due to heat generation.

In general, automobiles use gasoline or diesel as fuel. Gasoline and diesel not only emit harmful substances and cause air pollution, but also crude oil for producing gasoline and diesel fuel is exhausted, so the development of alternative energy to replace it is difficult. it is necessary. Recently, each industry is rushing to develop alternative energy, and as an alternative to this, electric vehicles operated through electric energy are being developed.

The electric vehicle refers to a vehicle operated using electricity, and may be largely divided into a battery powered electric vehicle and a hybrid electric vehicle.

Here, the pure electric vehicle is a vehicle that runs using only electricity without using fossil fuel, and is generally referred to as an electric vehicle. And, the hybrid electric vehicle refers to a vehicle that runs using electricity and fossil fuels.

The electric vehicle is provided with a battery for supplying electricity for driving. In particular, a pure electric vehicle and a plug-in type hybrid electric vehicle charge a battery using power supplied from an external power source, and drive an electric motor using the electric power charged in the battery.

In addition, a vehicle that does not have an engine and operates only with electric energy stored in a pure battery, such as the electric vehicle, can be driven only by charging the battery when the energy of the battery is discharged. However, compared to the spread of the electric vehicle, there is a disadvantage in that the charging place is limited as the infrastructure for the electric vehicle, such as the installation of a charging station supporting electric charging, does not reach it.

Here, the driver can charge power to the battery of the electric vehicle by using the emergency power supply device provided in the towing vehicle, such as a lorry, which is urgently dispatched in a situation in which unexpected battery discharge or charging is required while the electric vehicle is being driven. have.

In this power supply device, as the rotor of the generator connected to the engine of the towing vehicle rotates at a high speed at tens of thousands of revolutions per minute (RPM), power that can be supplied to the electric vehicle can be produced. At this time, the AC voltage produced as the rotor is rotated may be converted into a DC voltage through a rectifier and supplied to the electric vehicle or stored in an auxiliary battery.

Here, as the auxiliary battery, a nickel-based battery such as nickel-cadmium or nickel-metal hydride is mainly used, but a lithium ion battery having a high energy density is mainly used as the demand for a high-performance automobile battery increases in recent years.

However, if the lithium ion-based auxiliary battery is overheated by overloading the lithium-ion-based auxiliary battery due to excessive supply of power above the rated voltage, generation of overcurrent, or discharging due to low voltage, safety accidents such as fire are highly likely to occur. There was a problem that it was difficult to reuse.

On the other hand, the conventional power generation system of a small generator is composed of a small generator and a power generator for controlling the small generator. Here, the control unit of the power generator drives the RST waveform output during power generation using the TR control phase control method through the photocoupler.

However, there is a problem in that there is an error in the control method of the TR element base voltage due to the deviation of the peripheral circuit element and the power supply noise. That is, there is a problem in that the efficiency of the control is reduced because the noise temporarily generated on the RST is also recognized as a signal during power generation through the generator.

In addition, the control method of the small generator control unit is an AC-DC rectification method, which is difficult to downsize due to a complicated structure and high in manufacturing cost. There are the TRANS method and the half-wave rectification method, which are proportional to the size multiple but have low power generation efficiency.

However, there is a problem in that it is difficult to use the transformer method and the SMPS method due to the size limitation of the small generator.

In order to solve this problem, the generator can be manufactured by applying a half-wave rectification method that allows the miniaturization of the circuit to the small generator and has a low manufacturing cost.

However, in the generator to which the half-wave rectification method is applied, the power generation efficiency is reduced as the output voltage is half-wave rectified, and the heat generated to control the output voltage for noise correction causes serious damage to the element, significantly lowering durability and generating heat. As a result, there was a problem in that power was lost and energy efficiency was lowered.

Korean Patent Publication No. 10-2002-0042994

In order to solve the above problems, an object of the present invention is to provide a digital power generation system that is miniaturized and minimizes energy loss due to heat generation.

In order to solve the above problems, the present invention is a rotor unit provided with an electromagnet unit provided with a permanent magnet on one side and a voltage control coil on the other side, which is rotatably connected to a driving body, and the rotor unit rotates a power generation unit including a stator unit on which an excitation coil in which an inductive magnetic field is formed is wound; a rectifier circuit connected to the excitation coil to convert the AC voltage generated in the excitation coil into a DC voltage; a measuring unit connected to the rectifying unit to measure the DC voltage and current converted by the rectifying unit; a polarity control controller connected to the measuring unit by comparing the voltage measured by the measuring unit with a preset range and selectively applying a voltage to the voltage control coil in either a forward direction or a reverse direction; a digital output control unit connected to the excitation coil and passing the voltage output in a preset limit range so that the final output voltage is output substantially uniformly; And when the zero-crossing signal is not detected for a predetermined time by the zero-crossing detection unit by automatically determining whether the zero-crossing detecting unit of the power generation unit, the rectifying unit, the measuring unit, the polarity control controller unit and the digital output control unit fails A failure detection unit for transmitting a first failure signal, the first detection and measurement unit being circuitly connected to the output terminal of the excitation coil to measure the voltage at the output terminal side of the excitation coil; Further comprising a sensing measuring unit comprising a second sensing measuring unit for measuring the voltage of the coil, wherein the fault detecting unit is the polarity direction of the voltage control coil by the polarity control control unit in response to the increase and decrease of the voltage of the excitation coil When the automatically controlled voltage change is not detected by the detection and measurement unit, a second failure signal is transmitted, and when the final output voltage measured at the output terminal of the measurement unit is not detected, a third failure signal is transmitted, and the polarity control controller set When the output target value and the voltage measured by the measurement unit are different from each other, a fourth failure signal is transmitted, and the first failure signal, the second failure signal, the third failure signal, and the fourth failure signal are transmitted to the failure detection unit. It provides a digital power generation system, characterized in that it is set to be generated as mutually different notification signals by the notification means when each fault signal is generated by the

Here, the digital output control unit is circuit-connected to the excitation coil, and the zero-crossing detection unit for real-time detection of a zero-crossing signal when an AC voltage is generated from the excitation coil, and a circuit connected between the zero-crossing detection unit and the rectifying unit. It is preferable to include a limit setting unit for substantially blocking noise by adjusting the voltage frequency when the phase difference of the crossing signal deviates from the preset value in real time.

And, the polarity control controller is circuit-connected to the voltage control coil, and selectively applies a voltage to the voltage control coil in either a forward direction or a reverse direction so that the DC voltage rectified by the rectifier is maintained in a preset range, but the measurement When the DC voltage measured by the unit exceeds the preset range, the polarity control controller unit applies a reverse current to the voltage control coil, and when the DC voltage measured by the measuring unit is less than the preset range, the polarity control controller unit It is preferable to apply a forward current to the voltage control coil.

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In addition, a digital signal processing unit circuit connected to the polarity control controller unit and the digital output control unit, and connected to an operation unit for manipulation of an output voltage and an output mode, and a circuit connected to the digital signal processing unit, the output finally output from the output unit Further comprising a display unit provided to display a voltage, wherein the digital signal processing unit applies a first operation signal to the polarity control controller so that the number of revolutions per hour of the power generation unit is proportional to the final output voltage in the automatic mode, and in the setting mode A second operation signal is applied to the polarity control controller so that the final output voltage is maintained at a preset value regardless of the number of revolutions per hour of the power generation unit, and the number of revolutions per hour of the power generation unit and the final output voltage are inversely proportional to each other in the down mode. It is preferable to apply the third operation signal to the polarity control controller.

Through the above solution means, the present invention provides the following effects.

First, the phase of the final output voltage is changed as the noise naturally generated by the cause of the arrangement deviation of circuit elements or the power supply characteristics is detected and blocked in real time by the digital microcomputer method through the digital output control unit connected to the circuit between the excitation coil and the rectifier. Since it is delivered substantially uniformly, the reliability of the product can be significantly improved.

Second, when the phase difference of the zero-crossing signal detected when the AC voltage is generated in the excitation coil, the voltage frequency is adjusted in real-time when the voltage frequency is deviating from the preset value so that the noise is substantially removed and the voltage amplitude generated in the excitation coil by controlling the polarity direction of the electromagnet The quality of the final output voltage can be improved by providing a synergistic effect of auto-ranging.

Third, unlike the prior art in which the RPM range was limited due to overload when the engine was overspeeded, the voltage generated through the power generation unit regardless of the rotational speed of the driving body was corrected through the voltage addition inverter unit and the voltage drop transformer unit to obtain the final output voltage. It can be freely adjusted digitally and can be used in the full range RPM, so the versatility can be significantly improved.

Fourth, the voltage output generated from the excitation coil is digitally controlled in real time through the polarity control controller unit that controls the polarity direction of the electromagnet unit, so the final output voltage value is output substantially linearly and continuously, improving product reliability and Since energy loss due to heat generation is minimized, energy efficiency can be significantly improved.

Fifth, since the fault detection unit automatically determines whether the power generation unit, rectifier unit, measurement unit, polarity control controller unit, and digital output control unit are faulty in sequence and transmits various fault signals, the user can easily check the area where the fault occurs, improving work convenience. can be significantly improved.

Sixth, as the control method of the digital output control unit is changed to the AC-DC constant voltage method instead of the half-wave method, heat generation is reduced and malfunctions due to noise are minimized. can be significantly improved.

1 is a block diagram showing a digital power generation system according to an embodiment of the present invention.
2 is an exploded perspective view showing a power generation unit of a digital power generation system according to an embodiment of the present invention.
3 is a flowchart illustrating a method for controlling an electromagnet unit in a digital power generation system according to an embodiment of the present invention.
4 is a flowchart illustrating a control method of a failure detection unit in a digital power generation system according to an embodiment of the present invention.
5 is a graph showing a control state of a digital power generation system according to an embodiment of the present invention.

Hereinafter, a digital power generation system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a digital power generation system according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a power generation unit of the digital power generation system according to an embodiment of the present invention. 3 is a flowchart illustrating a control method of an electromagnet unit in a digital power generation system according to an embodiment of the present invention, and FIG. 4 is a control method of a failure detection unit in a digital power generation system according to an embodiment of the present invention. 5 is a graph showing the control state of the digital power generation system according to an embodiment of the present invention.

1 to 5, the digital power generation system 400 according to an embodiment of the present invention includes a power generation unit 200, a rectifier unit 51, a measurement unit 52, a digital signal processing unit 61, It is preferable to include a polarity control controller unit 62 and a digital output control unit 70 .

Here, the digital power generation system 400 is preferably understood as a concept encompassing a miniaturized power generation device and power generation system that is connected to a vehicle or ship engine, a vehicle for emergency power charging, and the like to produce power. In addition, the digital signal processing unit 61, the polarity control controller 62, and the digital output control unit 70 are provided as a single microcomputer, but it is preferable to understand that they are divided for different functions.

Meanwhile, referring to FIGS. 1 and 2 , the power generation unit 200 preferably includes a rotor unit 20 and a stator unit 30 . At this time, in an embodiment of the present invention, the case where the power generation unit 200 is provided in an inner rotor type is illustrated and described as an example, but is not limited thereto.

In addition, it is preferable that the rotor unit 20 is provided to be power-connected to the driving body 10 provided as an engine of a vehicle or a ship. In detail, the driving body 10 is preferably provided to provide a driving force to the rotor unit 20 as it rotates. In this case, the driving body 10 is preferably understood as an engine device provided in a vehicle or a ship, and the driving body 10 may be provided as an engine device installed in a power supply vehicle.

Here, as the driving body 10 is power-connected to the rotating shaft part 21 of the rotor part 20 , the driving force of the driving body 10 may be converted into the rotational force of the rotating shaft part 21 .

In addition, the rotor part 20 preferably includes a permanent magnet part 23 and an electromagnet part 25 . In detail, the yoke body part provided for the permanent magnet part 23 to be disposed on one side of the rotor part 20 is provided in a hollow shape surrounding one side of the outer periphery of the rotation shaft part 21 . It may be provided to rotate integrally during rotation.

In addition, the permanent magnet part 23 and the tapered fixing part provided to fix the permanent magnet part 23 to the yoke body part may be alternately arranged on the outer periphery of the yoke body part.

On the other hand, the electromagnet part 25 is disposed to surround the other side of the rotor part 20, and rotates integrally when the rotation shaft part 21 rotates. . Here, the yoke body part may be disposed to surround one side of the rotation shaft part 21 , and the electromagnet part 25 may be disposed to surround the other side of the outer periphery of the rotation shaft part 21 . That is, the yoke body part and the electromagnet part 25 may be arranged in a tandem type. Here, the voltage control coil 26 is preferably circuit-connected to the polarity control controller 62 that selectively converts the current flow in any one of the forward and reverse directions.

At this time, when the rotating shaft part 21 is rotated, the yoke body part, the permanent magnet part 23, the tapered fixing part, and the electromagnet part 25 may be simultaneously interlocked and rotated. Through this, when the rotor unit 20 is rotated simultaneously when the driving body 10 is rotated, an induction magnetic field can be formed in the excitation coil 31 wound around the core unit 30a of the stator unit 30 . have.

Accordingly, as the rotating shaft part 21 connected to the driving body 10 is rotated, the yoke body part and the electromagnet part 25 in which the permanent magnet part 23 is disposed on the outer periphery in the radial direction are rotated at the same time. can Through this, each magnetic field generated by the permanent magnet unit 23 and the electromagnet unit 25 in the stator unit 30 is generated without mutual interference, and the electromagnet unit 25 selectively generates the The intensity of the AC voltage output to the rectifying unit 51 may be adjusted.

That is, as a current in one of the forward and reverse directions is applied to the voltage control coil 26 and the polarity direction of the electromagnet unit 25 is selectively adjusted, it is generated in the excitation coil 31 of the stator unit 30 . The intensity of the induced power can be automatically adjusted.

Accordingly, as the permanent magnet part 23 is interlocked with the driving body 10 and rotates corresponding to the rotation speed of the driving body 10 , an AC voltage may be generated in the stator part 30 . At this time, the polarity direction of the electromagnet part 25 is automatically adjusted so that the AC voltage generated by the permanent magnet part 23 is maintained in a preset range regardless of the rotational speed of the driving body 10, so that the stator part The intensity of the AC voltage generated in (30) can be adjusted.

In addition, it is preferable that the core part 30a of the stator part 30 is provided in a hollow shape and is disposed on the radially outer side of the rotor part 20 . Here, the core part 30a is disposed to surround the outer periphery of the permanent magnet part 23 and the electromagnet part 25 of the rotor part 20, and to be spaced apart from each other by a predetermined distance from the rotor part 20. It is preferred to place

In addition, it is preferable that the core part 30a surrounds the outer periphery of the permanent magnet part 23 , the tapered fixing part, and the electromagnet part 25 . Here, the axial length of the core part 30a corresponds to the axial length of the rotor part 20 including the permanent magnet part 23 and the tapered fixing part and the electromagnet part 25. desirable. In addition, it is preferable that the inner diameter of the core part 30a exceeds the outer diameter of the rotor part 20 .

In addition, it is preferable that the core part 30a includes a hollow bobbin including the first bobbin and the second bobbin, and a hollow partition part provided between the first bobbin and the second bobbin. In detail, the first bobbin is preferably provided by stacking a plurality of silicon steel plates so that the excitation coil 31 opposite to the permanent magnet part 23 is wound on one side of the axial direction of the core part 30a. In this case, it is preferable that the first bobbin is provided on one side in the axial direction of the core part 30a based on the partition part. In addition, it is preferable that the first bobbin is disposed radially outside the permanent magnet part 23 and the tapered fixing part and spaced apart from the permanent magnet part 23 from each other. That is, the yoke body part, the permanent magnet part 23, and the tapered fixing part may be disposed in the radially inner side of one side in the axial direction of the core part 30a based on the partition part.

In addition, the second bobbin is preferably provided by stacking a plurality of silicon steel plates so that the excitation coil 31 opposite to the electromagnet 25 is wound on the other side of the core part 30a in the axial direction. In this case, it is preferable that the second bobbin is provided on the other side in the axial direction of the core part 30a based on the partition part. In addition, it is preferable that the second bobbin is disposed radially outside the electromagnet part 25 and spaced apart from the electromagnet part 25 from each other. That is, the electromagnet part 25 may be disposed inside the other side in the axial direction of the core part 30a based on the partition part in the radial direction.

In addition, the partition part is preferably connected between the first bobbin and the second bobbin so that the induced magnetic field of the excitation coil 31 generated by the permanent magnet part 23 and the electromagnet part 25 is partitioned, respectively. do. In this case, the induction magnetic field is preferably understood as a rotating magnetic field generated between the stator parts 30 as the rotor part 20 rotates.

In detail, the partition part is made of a non-magnetic material so that the induced magnetic field of the excitation coil 31 generated by the permanent magnet part 23 and the electromagnet part 25 is partitioned in the central part of the core part 30a in the axial direction, respectively. It is preferable to be provided with In this case, the non-magnetic material means a material that does not have magnetism. Here, the partition portion is most preferably formed by stacking a plurality of stainless steel (SUS) steel plates.

In addition, the excitation coil 31 is preferably wound in the slot of the bobbin so that an induction magnetic field is formed as the rotor part 20 rotates. Here, the excitation coil 31 is preferably wound in sections of the bobbin slot so as to surround the outer periphery of each of the permanent magnet part 23 and the electromagnet part 25 and form an inductive magnetic field. At this time, the excitation coil 31 is most preferably wound as a three-phase coil, but is not limited thereto. In addition, it is preferable that the slot of the bobbin is recessed radially outward along the circumferential direction on the inner periphery of the bobbin. In this case, an extension slot corresponding to the slot of the bobbin may be recessed in the inner periphery of the partition part along the circumferential direction.

Here, the excitation coil 31 is partitioned based on the partition part so that the induced magnetic field generated by the permanent magnet part 23 and the electromagnet part 25 is partitioned, respectively, to the first bobbin and the second bobbin. Each is preferably section wound. That is, the excitation coil 31 may be partitioned based on the partition part and wound on one side and the other side in the axial direction of the core part 30a.

At this time, the excitation coils 31 are integrally connected to each other, and the excitation coil 31 wound on the first bobbin and the excitation coil 31 wound on the second bobbin based on the partition made of a non-magnetic material. It is desirable to understand that it is mutually partitioned. Accordingly, an inductive magnetic field generated between the permanent magnet unit 23 and the excitation coil 31 and an inductive magnetic field generated between the electromagnet unit 25 and the excitation coil 31 may be independently generated.

In addition, as the rotor part 20 is interlocked with the driving body 10 and rotates corresponding to the rotational speed of the driving body 10 , an AC voltage is generated in the excitation coil 31 of the stator part 30 . It is preferable to understand At the same time, the polarity direction of the electromagnet part 25 is automatically adjusted so that the AC voltage generated by the permanent magnet part 23 is maintained in a preset range regardless of the rotation speed of the driving body 10, so that the stator It is preferable to understand that the AC voltage generated in the unit 30 is regulated.

Accordingly, the excitation coil 31 is separately wound on the first bobbin facing the permanent magnet unit 23 and the second bobbin facing the electromagnet unit 25 , respectively, the first bobbin and the second bobbin. Each of the excitation coils 31 may be partitioned by a partition made of a non-magnetic material provided between the bobbins. Through this, as interference and leakage between the induced magnetic fields generated in each of the excitation coils 31 are minimized, the final output AC voltage can be precisely controlled without error. In addition, since the inductive magnetic field by the permanent magnet 23 and the excitation coil 31 and the inductive magnetic field by the electromagnet 25 and the excitation coil 31 are respectively divided and generated, the final output AC voltage output is increased and output sensitivity can be improved.

On the other hand, it is preferable that the partition part, the first bobbin, and the second bobbin are sequentially stacked with each other. In this case, it is preferable that the inner and outer profiles of the partition part, the first bobbin, and the second bobbin are formed in a substantially continuous profile.

Here, the partition part is disposed in the central portion of the axial direction of the core part 30a and is preferably made of a non-magnetic material. In this case, it is most preferable that the partition portion is formed by stacking a plurality of stainless steel plates. In detail, it is preferable that the diameter of the partition portion formed of a plurality of steel sheets substantially corresponds to the diameter of the bobbin formed by laminating silicon steel sheets. Here, the partition part may be formed to be laminated with a plurality of stainless steel plates and connected to the bobbin, rather than being disposed to surround the outer boundary of the interface between the first bobbin and the second bobbin and connected through welding.

Through this, the partition portion provided as a stainless steel plate between the first bobbin and the second bobbin that is laminated with a plurality of silicon steel plates may be stacked to form mutually continuous inner and outer profiles. Accordingly, interference and leakage of an inductive magnetic field generated between the excitation coil 31 and the permanent magnet unit 23 and the electromagnet unit 25 are minimized, thereby improving product precision.

In addition, it is preferable that the first cover part 30b and the second cover part 30c are respectively disposed on both sides of the core part 30a in the axial direction to be coupled to each other. In detail, the first cover part 30b is disposed on the end side of the core part 30a adjacent to the electromagnet part 25, is provided in a cylindrical shape with one side open, and has an outer diameter of the core part 30a and It is preferably formed with a corresponding outer diameter.

On the other hand, the second cover portion 30c is disposed on the end side of the core portion 30a adjacent to the yoke body portion, is provided in a cylindrical shape with one side open and corresponds to the outer diameter of the core portion 30a. It is preferably formed with an outer diameter. In addition, the second cover part 30c is provided in a hollow shape, and the inner diameter may be formed to be slightly larger than the outer diameter of one end of the rotation shaft part 21 . In this case, in some cases, a device such as a bearing may be further provided between the inner periphery of the second cover part 30c and one end of the rotation shaft part 21 .

Accordingly, the rotor part interlocked with the driving body 10 inside the stator part 30 including the core part 30a, the first cover part 30b, and the second cover part 30c. 20 is disposed and can be rotated.

On the other hand, it is preferable that one side of the rectifying unit 51 is circuit-connected to the excitation coil 31 so as to convert the AC voltage generated in the excitation coil 31 into a DC voltage. Here, the rectifier 51 may be provided with a rectifier circuit or a microprocessor, and is not limited thereto as long as it has a structure that converts an AC voltage into a DC voltage. At this time, it is preferable to understand that the digital output control unit 70 is disposed between the excitation coil 31 and the rectification unit 51 .

For example, the rectifying unit 51 is provided with three pairs of circuits in which two diodes are connected in series and are connected in parallel to each other, and the output terminal of the diode is provided as a positive voltage terminal and the input terminal of the diode is provided as a negative voltage terminal. . In addition, the excitation coil 31 provided as a three-phase coil and wound at three locations on the core part 30a may be connected in a circuit between each of the diodes connected in series.

Accordingly, as the permanent magnet unit 23 and the electromagnet unit 25 are rotated, the AC voltage generated in the excitation coil 31 may be converted into a DC voltage in the rectifier 51 and output.

At this time, the rectifier 51 may be further provided with a voltage addition inverter provided as a circuit or a microprocessor for a voltage addition inverter to add a voltage through the power supply unit 63 in addition to the voltage output from the excitation coil 31 . In some cases, a voltage drop transformer provided as a circuit or a microprocessor for a voltage drop transformer through the power supply unit 63 may be further provided at the output terminal of the excitation coil 31 .

Meanwhile, the measuring unit 52 is preferably connected to the output terminal of the rectifying unit 51 to measure the DC voltage and current converted by the rectifying unit 51 . Here, the measuring unit 52 preferably includes a voltage measuring unit and a current measuring unit.

Here, the voltage measuring unit may be connected in parallel to the positive voltage terminal of the rectifying unit 51 , and the current measuring unit may be connected in series to the positive voltage terminal and the negative voltage terminal of the rectifying unit 51 . At this time, the measuring unit 52 may be circuit-connected to the digital signal processing unit 61 so as to transmit a DC voltage and a current strength signal to the polarity control controller 62 side. Accordingly, the polarity control controller 62 may control to selectively switch the polarity direction of the electromagnet unit 25 in response to the DC voltage strength measured from the measuring unit 52 .

Meanwhile, the output unit n connected to the output terminal of the measuring unit 52 may be provided to supply electric energy output from the excitation coil 31 to a charging object such as an electric vehicle. In addition, the output unit n may be circuit-connected to supply the DC voltage rectified by the rectifier 51 to the charging object. Accordingly, as the output unit n is connected to the charging object, the power generated by the power generation unit 200 may be supplied.

On the other hand, the polarity control controller unit 62 compares the voltage generated by the measuring unit 52 with a preset range and selectively applies a current to the voltage control coil 26 in either a forward direction or a reverse direction. It is preferable to be At this time, the polarity direction and the voltage level of the voltage control coil 26 may be adjusted through the polarity control controller 62 .

Here, the voltage control coil 26 is a circuit in the polarity control controller unit 62 that selectively converts the current flow into any one of the forward and reverse directions so that the DC voltage rectified by the rectifying unit 51 is maintained in a preset range. It is preferable to be connected.

In addition, the polarity control controller 62 may be circuit-connected to a separately provided DC supply unit via the digital signal processing unit 61 or directly, and the digital direction of the current supplied from the DC supply unit may be selectively controlled. Preferably, the signal is connected to the signal processing unit 61 . Here, the digital signal processing unit 61, the polarity control controller 62, and the digital output control unit 70 are provided as a single microcomputer, but it is preferable to understand that they are divided for different functions.

Of course, in some cases, the polarity control controller may be provided as a bridge circuit configured by using four identical semiconductor switching elements. Here, the polarity control controller may include a first switching device, a second switching device, a third switching device, and a fourth switching device that are the same semiconductor switching device.

Here, an output terminal of a diode and an input terminal of a transistor device may be connected to one node of each of the first switching device, the second switching device, the third switching device, and the fourth switching device. In addition, an input terminal of the diode and an output terminal of the transistor device may be connected to each other node of the first switching device, the second switching device, the third switching device, and the fourth switching device. In this case, each of the transistor elements may be signal-connected to the polarity control controller. In addition, one node of the first switching element and the second switching element may be connected in parallel to a positive terminal of the DC supply unit. In addition, the other nodes of the third switching element and the fourth switching element may be connected in parallel to a positive terminal of the DC supply unit.

Moreover, the other node of the first switching element and the one node of the third switching element are mutually connected, and as they are connected in parallel to any one of the carbon brushes, they may be connected to one end of the voltage control coil 26 . In addition, the other node of the second switching element and the one node of the fourth switching element may be connected to each other and connected to the other end of the voltage control coil 26 as they are connected in parallel to the other one of the carbon brushes.

Here, it is preferable to understand that a current flow from one end to the other end of the voltage control coil 26 is formed in a forward direction, and a current flow from the other end to one end of the voltage control coil 26 is formed in a reverse direction. At this time, it is preferable to understand that the forward direction and the reverse direction are described to specify the direction of the current, and it is preferable to understand that the direction is also included in the scope of the present invention when the direction is mutually switched.

Meanwhile, referring to FIG. 3 , it is preferable that the AC voltage generated in the excitation coil 31 is converted into a DC voltage in the rectifier 51 ( s10 ). In addition, it is preferable to compare and determine whether the DC voltage measured by the measuring unit 52 exceeds a preset range (s11).

Here, when the DC voltage measured by the measuring unit 52 exceeds a preset range, it is preferable that the polarity control controller 62 applies a reverse current to the voltage control coil 26 (s12). For example, when the DC voltage measured by the measuring unit 52 exceeds the preset value of 200V, the current flowing through the voltage control coil 26 is automatically controlled in the reverse direction, so that the DC voltage can be restored close to 200V. .

Accordingly, the direction of voltage and current generated between the permanent magnet unit 23 and the excitation coil 31 and the direction of voltage and current generated between the electromagnet unit 25 and the excitation coil 31 are opposite to each other. formed so that the induced power may be attenuated.

In addition, when the DC voltage measured by the measurement unit 52 is less than a preset range, it is preferable that the control unit 61 applies a forward current to the voltage control coil 26 (s13). For example, if the DC voltage measured by the measuring unit 52 is less than the preset value of 200V, the DC voltage can be restored close to 200V as the flow of current passing through the voltage control coil 26 is automatically controlled in the forward direction.

Accordingly, the direction of voltage and current generated between the permanent magnet unit 23 and the excitation coil 31 and the direction of voltage and current generated between the electromagnet unit 25 and the excitation coil 31 are in the same direction. formed so that the induction power can be reinforced.

Accordingly, the polarity direction of the electromagnet unit 25 is automatically controlled by the polarity control controller unit 62 so that the AC voltage generated by the excitation coil 31 of the stator unit 30 is applied to the rotor unit 20 . Since it is constantly maintained in a preset range regardless of the rotational speed of the driving body 10 connected to the power, overload of the power generation unit 200 is prevented, so that durability and safety can be remarkably improved. At this time, when the AC voltage generated from the excitation coil 31 of the stator unit 30 is output as an under or excessive value, the polarity control controller 62 reinforces it in real time so that the AC voltage is within a preset range. can be kept constant.

In particular, the voltage output generated by the excitation coil 31 is digitally controlled in real time in 1 μs time units through the polarity control controller 62 that controls the polarity direction of the electromagnet unit 25 . Therefore, the finally output voltage value is output substantially linearly and continuously, so that the reliability of the product is improved, and energy loss due to heat generation due to the load generation of the device is minimized, so that energy efficiency can be remarkably improved.

That is, due to the characteristics of the conventional analog generator, the final output voltage value is slightly increased or decreased based on the preset value. Since is adjusted in real time to quickly converge to 0 and minimized, the reliability of the output voltage is improved and the quality of the product can be significantly improved accordingly. At the same time, since the power generation unit 200 is smaller than the conventional generator, space utilization can be remarkably improved when applied to an external device.

On the other hand, referring to FIG. 1 , the digital output control unit 70 is circuit-connected to the excitation coil 31 and is provided to pass only a voltage output in a preset limit range so that the final output voltage is substantially uniformly output. This is preferable. At this time, the preset limit range means a preset voltage frequency range for stably driving the charging object when the electric power generated by the excitation coil 31 is supplied to the charging object, and the voltage frequency deviating from the limit range It is desirable to understand that is defined as noise. For example, the noise can be understood as a state in which the voltage frequency value is significantly lowered when compared with the voltage frequency output from the excitation coil 31 on average.

Here, the digital output control unit 70 is circuit-connected between the excitation coil 31 and the rectifying unit 51, and a zero-crossing detection unit that detects a zero-crossing signal when an AC voltage is generated from the excitation coil 31 in real time. (71) is preferably included.

At this time, the zero-crossing detection unit 71 is most preferably provided as a microprocessor provided to monitor the zero-crossing signal generated in units of frequency in real-time as AC power is generated in the excitation coil 31, or It may be provided as a circuit. That is, the zero-crossing detecting unit 71 is preferably provided to analyze the input waveform input from the excitation coil 31 to the zero-crossing detecting unit 71 in real time.

Here, the zero-crossing signal is a signal generated when AC power is applied and can be sensed at a point where the AC voltage becomes 0V when the AC voltage is switched from positive to negative and negative to positive, and is generated at a cycle corresponding to the frequency of the AC power. can Alternatively, the zero-crossing signal may be detected by calculating the phase timing between the maximum and minimum amplitudes of the AC voltage using a microcomputer method.

In addition, the digital output control unit 70 is circuit-connected between the zero-crossing detecting unit 71 and the rectifying unit 51, so that the voltage frequency when the phase difference of the zero-crossing signal deviates from a preset value is adjusted in real time to substantially reduce noise. It is preferable to include a limit setting unit 72 to block. Here, it is preferable that the limit setting unit 72 is provided as a microprocessor that is provided to remove the noise generated by being deviating from the limit range in real time by controlling the timing operation using a microcomputer method.

Here, when the frequency (phase difference) of the zero-crossing signal detected by the zero-crossing detection unit 71 is deviating from the preset limit range, the limit setting unit 72 determines that it is noise and in the excitation coil 31 It is preferable to block and remove noise transmitted to the rectifier 51 in real time.

In addition, the limit setting unit 72 may reinforce or offset the output frequency deviating from the limit range input from the excitation coil 31 in a microcomputer digital manner and transmit it to the rectification unit 51 side. In this case, the digital output control unit 70 may be connected to the power supply unit 63 to reinforce or cancel the output frequency of the excitation coil 31 .

Therefore, when the power generation unit 200 generates an AC voltage through electromagnetic induction, noise naturally generated due to a cause such as arrangement deviation of circuit elements or power supply characteristics is generated between the excitation coil 31 and the rectification unit 51 . It is detected and blocked in real time by a digital microcomputer method through the digital output control unit 70 connected to the circuit. Accordingly, since the phase of the final output voltage is transmitted substantially uniformly, the reliability of the product may be remarkably improved.

On the other hand, the digital power generation system 400 is circuit-connected to the polarity control controller unit 62 and the digital output control unit 70, and is communicatively connected to the manipulation unit 65 for manipulating the final output voltage and output mode. Preferably, the digital signal processing unit 61 is further included. At this time, it is preferable to understand that the digital signal processing unit 61, the polarity control controller 62 and the digital output control unit 70 are provided as a single microcomputer, but are divided for different functions.

Furthermore, the digital signal processing unit 61, the polarity control controller 62 and the digital output control unit 70 are preferably circuit-connected to the power supply unit 63 provided for supplying power. In this case, the power supply unit 63 may be provided with a battery or the like, but is not limited thereto. For example, when the digital power generation system 400 is applied to a hybrid vehicle, the driving body 10 may be provided as an engine of the vehicle, and the power supply unit 63 may be provided as a power source provided inside the vehicle.

That is, the digital signal processing unit 61, the polarity control controller 62 and the digital output control unit ( 70) is driven to correct the magnitude of the output voltage generated by the power generation unit 200, and a final output voltage from which naturally generated noise is removed may be supplied through the output unit n.

In addition, the digital power generation system 400 is circuit-connected to the digital signal processing unit 61 and is provided to display the final output voltage from the output unit n circuit-connected to the output terminal of the measuring unit 52 It is preferable to further include a display unit 64 . Through this, since the operation state of the digital power generation system 400 can be visually easily checked through the display unit 64 , the usability can be improved.

In addition, the manipulation unit 65 may be provided to adjust the characteristics of the output voltage finally output from the output unit n of the digital power generation system 400 by the user, and the operation state through the manipulation unit 65 . may be provided to be displayed in association with the display unit 64 . In this case, the manipulation unit 65 may be provided as an external controller such as a vehicle control unit (VCU), an electronic control unit (ECU), an on board charger (OBC), and the like, and the digital signal processing unit 61 and the bidirectional protocol can be connected have.

On the other hand, the digital power generation system 400 is the zero crossing of the power generation unit 200 , the rectifier unit 51 , the measurement unit 52 , the polarity control controller unit 62 , and the digital output control unit 70 . It is preferable to further include a failure detection unit 61a for automatically determining whether the detection unit 71 has a failure. In this case, the failure detection unit 61a is preferably provided as a single microcomputer integrally with the digital signal processing unit 61 , the polarity control controller 62 , and the digital output control unit 70 .

In detail, referring to FIG. 4 , the failure detecting unit 61a is configured to generate the zero by the zero crossing detection unit 71 in a state in which the power generation unit 200 is operated to generate electric power in the excitation coil 31 . It is determined whether a crossing signal is detected for a preset time (s20).

Here, the failure detection unit 61a transmits a first failure signal to the digital signal processing unit 61 when the zero-crossing signal is not detected for a predetermined time by the zero-crossing detection unit 71 (s21). In this case, the first failure signal may be transmitted to the display unit 64 through the digital signal processing unit 61 or may be transmitted to a separately provided notification means. Then, the user may check whether the excitation coil 31 is connected, whether the power generation unit 200 is faulty, and the like after confirming the first failure signal.

Next, the failure detection unit 61a determines whether the polarity control control unit 62 normally controls the voltage control coil 26 (s22). That is, the fault detection unit 61a is configured to control the polarity control control unit 62 of the voltage control coil 26 so that the final output voltage is maintained in a preset range in response to the voltage generated by the excitation coil 31 . It is determined whether the polarity direction is controlled.

Here, the digital power generation system 400 is circuit-connected to the output terminal of the excitation coil 31 to measure the output terminal voltage of the excitation coil 31 with a first sensing and measuring unit, and the voltage control coil 26 . It may further include a sensing measuring unit including a second sensing and measuring unit connected to the circuit to measure the voltage of the voltage control coil (26).

In addition, the failure detection unit 61a is a second failure in the digital signal processing unit 61 when no voltage change is detected by the detection and measurement units connected to the excitation coil 31 and the voltage control coil 26, respectively. A signal is transmitted (s23). At this time, the voltage change means that the polarity direction of the voltage control coil 26 is automatically adjusted in response to the increase and decrease of the voltage of the excitation coil 31 so that the final output voltage is maintained in the preset range. For example, when the polarity direction of the voltage control coil 26 is not adjusted despite the increase in the voltage of the excitation coil 31, a second failure signal may be transmitted.

Then, after checking the second failure signal, the user checks whether the polarity control controller 62 is faulty, whether the voltage control coil 26 is connected, whether the excitation coil 31 is connected, and the power generation unit 200. It is possible to check whether there is a malfunction or not.

Next, the failure detection unit 61a determines whether the final output voltage measured at the output terminal of the measurement unit 52, that is, the output unit n, is detected (s24). Here, the failure detection unit 61a transmits a third failure signal to the digital signal processing unit 61 when the output terminal of the measurement unit 52, that is, the final output voltage measured by the output unit n is not detected. (s25). Then, after checking the third failure signal, the user may check whether the output unit n is connected, and whether each element in the excitation coil 31 and the power generation unit 200 is defective.

Then, the failure detecting unit 61a determines whether the output target value set by the polarity control controller 62 and the voltage measured by the measuring unit 52 coincide with each other (s26). At this time, the failure detection unit 61a sends a fourth failure to the digital signal processing unit 61 when the output target value set by the polarity control controller 62 and the voltage measured at the output terminal of the measurement unit 52 are different. A signal is transmitted (s27). Then, after confirming the fourth failure signal, the user may check whether the polarity control controller unit 62 has a failure, and whether the excitation coil 31 and the voltage control coil 26 are connected.

Moreover, the digital signal processing unit 61 may further include a notification means for generating a notification signal when each fault signal is generated by the fault detection unit 61a. In this case, the notification means may be provided as the display unit 64, may also be provided as a speaker, but is not limited thereto. In addition, the notification means may generate the notification means in a different manner for each of the first failure signal, the second failure signal, the third failure signal, and the fourth failure signal. For example, the notification means may generate a different color for each fault signal, or a different number and interval of signal tones.

Accordingly, the failure detection unit 61a detects whether the power generation unit 200, the rectifier unit 51, the measurement unit 52, the polarity control controller unit 62 and the digital output control unit 70 fail. By automatically determining sequentially and transmitting various failure signals, the user can easily check the area where the failure occurs, and thus the work convenience can be remarkably improved.

Meanwhile, referring to FIG. 5 , an automatic mode, a setting mode, a down mode, and a turbo mode may be selectively input and switched by a user through the manipulation unit 65 .

Here, the digital signal processing unit 61 transmits to the polarity control controller 62 so that the revolutions per hour (RPM) of the power generation unit 200 and the final output voltage from the output unit n are proportional to each other in the automatic mode. A first operation signal may be applied. At this time, when the first operation signal is applied to the polarity control controller unit 62, the polarity control controller unit 62 controls the voltage control coil 26 so that the voltage output generated by the excitation coil 31 is proportionally adjusted. ) can be controlled.

And, the digital signal processing unit 61 is the polarity control controller unit ( 62) may be applied with a second operation signal. Here, when the second manipulation signal is applied to the polarity control controller unit 62, the polarity control controller unit 62 regulates the voltage so that the voltage output generated by the excitation coil 31 is maintained at a preset value. The coil 26 can be controlled.

In addition, the digital signal processing unit 61 is a third operation to the polarity control controller unit 62 so that the number of revolutions per hour of the power generation unit 200 and the final output voltage from the output unit n are inversely proportional to each other in the down mode. signal can be applied. At this time, when the third operation signal is applied to the polarity control controller unit 62, the polarity control controller unit 62 controls the voltage control coil 26 so that the voltage output generated by the excitation coil 31 is inversely adjusted. ) can be controlled.

Furthermore, the digital signal processing unit 61 is configured such that, in the turbo mode, the revolutions per hour (RPM) of the power generation unit 200 and the final output voltage from the output unit n are proportional to each other when the first operation signal is applied. A fourth manipulation signal may be applied to the polarity control controller 62 to be higher than the final output voltage.

Therefore, when the automatic mode, setting mode, down mode and turbo mode are input and switched in response to the user's manipulation, the final output voltage from the output unit n is applied to the revolutions per hour (RPM) of the power generation unit 200 . Since it can be selectively freely adjusted correspondingly, the usability can be improved.

In addition, the digital power generation system 400 according to the present invention is provided to enable digitized input phase control control unlike the prior art using the RST analog phase control input, thereby increasing energy efficiency and reducing costs due to device simplification. The economy can be significantly improved. Moreover, the types of usable devices are diversified, so that the parts supply/demand mass productivity may be improved.

In addition, in addition to the power generation function through the power generation unit 200, the power generation unit ( 200) can be digitally adjusted, so the usability can be improved.

Through this, by real-time adjustment of the voltage frequency when the phase difference of the zero-crossing signal detected when the AC voltage is generated in the excitation coil 31 deviates from the preset value, noise is substantially removed and the polarity direction of the electromagnet unit 25 is controlled. The quality of the final output voltage can be improved by providing a synergistic effect in which the voltage amplitude range generated by the excitation coil 31 is automatically adjusted through .

At the same time, the voltage generated through the power generation unit 200 regardless of the rotational speed of the driving body 10 is combined with the voltage addition inverter unit and voltage, unlike the prior art in which the RPM range was limited due to overload occurring during engine overspeed. The versatility can be remarkably improved because it can be used at full-band RPM by freely adjusting the final output voltage digitally by correcting it through the drop-down transformer.

In addition, as the control method of the digital output control unit 70 is changed to an AC-DC constant voltage method instead of a half wave method, heat generation is reduced and malfunction due to noise is minimized, and it is smaller than a conventional generator and applied to an external device. Space utilization can be significantly improved.

In this case, terms such as "include", "comprise" or "comprise" described above mean that the corresponding component may be inherent unless otherwise stated, so other components are excluded. Rather, it should be construed as being able to include other components further. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and modifications can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

10: driving body 20: rotor part
23: permanent magnet unit 25: electromagnet unit
26: voltage control coil 30: stator part
31: excitation coil 51: rectifying unit
52: measurement unit 61: digital signal processing unit
61a: failure detection unit 62: polarity control controller unit
63: power unit 64: display unit
65: operation unit 70: digital output control unit
71: zero crossing detection unit 72: limit setting unit
200: power generation unit 400: digital power generation system

Claims (5)

The stator is connected to the driving body and arranged rotatably, the rotor part having an electromagnet part having a permanent magnet part on one side and a voltage regulation coil on the other side, and an excitation coil wound in which an inductive magnetic field is formed when the rotor part rotates. power generation department including wealth;
a rectifier circuit connected to the excitation coil to convert the AC voltage generated in the excitation coil into a DC voltage;
a measuring unit connected to the rectifying unit to measure the DC voltage and current converted by the rectifying unit;
a polarity control controller connected to the measuring unit, comparing the voltage measured by the measuring unit with a preset range, and selectively applying a voltage to the voltage control coil in either a forward direction or a reverse direction;
a digital output control unit connected to the excitation coil and passing a voltage output in a preset limit range so that the final output voltage is output substantially uniformly; and
When the zero-crossing signal is not detected for a preset time by the zero-crossing detection unit by automatically determining whether the zero-crossing detection unit of the power generation unit, the rectifying unit, the measuring unit, the polarity control controller unit and the digital output control unit fails 1 Including a failure detection unit for transmitting a failure signal,
A first sensing and measuring unit connected to the output terminal of the excitation coil to measure the output terminal voltage of the excitation coil, and a second sensing and measuring unit connected to the voltage control coil to measure the voltage of the voltage control coil It further includes a sensing unit,
The failure detection unit transmits a second failure signal when the voltage change in which the polarity direction of the voltage control coil is automatically adjusted by the polarity control controller is not detected by the detection and measurement unit in response to the increase and decrease of the voltage of the excitation coil. do,
When the final output voltage measured at the output terminal of the measurement unit is not detected, a third failure signal is transmitted, and when the output target value set by the polarity control controller and the voltage measured by the measurement unit are different from each other, a fourth failure signal is transmitted,
The first failure signal, the second failure signal, the third failure signal and the fourth failure signal are set to be generated as mutually different notification signals by the notification means when each failure signal is generated by the failure detection unit. digital power generation system. The method of claim 1,
The digital output control unit
The zero-crossing detection unit is connected to the circuit to the excitation coil and detects a zero-crossing signal in real time when an AC voltage is generated from the excitation coil;
Digital power generation system comprising a limit setting unit connected to a circuit between the zero-crossing detection unit and the rectifying unit to substantially block noise by adjusting the voltage frequency when the phase difference of the zero-crossing signal deviates from a preset value in real time . The method of claim 1,
The polarity control controller unit is circuit-connected to the voltage control coil, and selectively applies a voltage to the voltage control coil in either a forward direction or a reverse direction so that the DC voltage rectified by the rectifier is maintained in a preset range,
When the DC voltage measured by the measuring unit exceeds a preset range, the polarity control controller applies a reverse current to the voltage control coil,
The digital power generation system, characterized in that when the DC voltage measured by the measuring unit is less than a preset range, the polarity control controller applies a forward current to the voltage control coil. delete The method of claim 1,
a digital signal processing unit circuit connected to the polarity control controller unit and the digital output control unit, and connected to a manipulation unit for operating an output voltage and an output mode;
Further comprising a display unit connected to the circuit connected to the digital signal processing unit to display the output voltage finally output from the output unit,
The digital signal processing unit
A first operation signal is applied to the polarity control controller so that the number of revolutions per hour of the power generation unit is proportional to the final output voltage in the automatic mode,
In the setting mode, a second operation signal is applied to the polarity control controller so that the final output voltage is maintained at a preset value regardless of the number of revolutions per hour of the power generation unit,
Digital power generation system, characterized in that the third operation signal is applied to the polarity control controller so that the number of revolutions per hour of the power generation unit and the final output voltage are inversely proportional to each other in the down mode.

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