KR20210016721A - 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 digital power generation system comprising: a power generation unit including a rotor unit power-connected to a driving body to be rotatably arranged and provided with a permanent magnet unit on one side and an electromagnet unit with a voltage control coil on the other side and a stator unit wound with an excitation coil in which an inductive magnetic field is formed when the rotor unit rotates; a rectifier unit circuit-connected to the excitation coil to convert an AC voltage generated in the excitation coil into a DC voltage; a measuring unit circuit-connected to the rectifier unit to measure the DC voltage and current converted by the rectifier unit; a polarity control controller circuit-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; and a digital output control unit circuit-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.

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 energy loss due to heat generation is minimized.

In general, automobiles use gasoline or diesel as fuel, but gasoline and diesel not only cause air pollution by emitting harmful substances, but also crude oil for manufacturing gasoline and diesel fuel is depleted, so the development of alternative energy that can replace this is difficult. It is a necessary situation. In recent years, each industry is in a hurry to develop alternative energy, and as an alternative to this, electric vehicles that run through electric energy are being developed.

Such an electric vehicle refers to a vehicle operated using electricity, and can be largely classified into a pure electric vehicle (Batttery Powered Electric Vehicle) and a hybrid electric vehicle (Hybrid Electric Vehicle).

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

The electric vehicle is provided with a battery that supplies electricity for driving. In particular, pure electric vehicles and plug-in type hybrid electric vehicles charge a battery using power supplied from an external power source, and drive an electric motor using the 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 when the energy of the battery is discharged and charged. 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 electric power to the battery of the electric vehicle by using an emergency power supply device provided in a towing vehicle such as an emergency dispatcher in a situation where unexpected discharge or charging of the battery is required during the driving of the electric vehicle. have.

Such a power supply device may generate power that can be supplied to an electric vehicle as the rotor of the generator connected to the engine of the towing vehicle rotates at high speed at tens of thousands of revolutions per minute (RPM). In this case, the AC voltage produced as the rotor rotates may be converted into a DC voltage through a rectifier and supplied to an 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 has been mainly used, but a lithium ion battery having a high energy density is mainly used as the demand for a high-performance automobile battery has recently increased.

However, if the lithium ion-based auxiliary battery is overheated due to excessive supply of power above the rated voltage, generation of overcurrent, and discharge due to low voltage, there is a high possibility of a safety accident such as a fire. There was a problem that it was difficult to reuse.

On the other hand, the conventional power generation system for 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 is driven by using the TR control phase control method through a photocoupler for the RST waveform output during power generation.

However, there is a problem in that there is an error in the control method of the base voltage of the TR element due to variations in peripheral circuit elements and power noise. That is, there is a problem in that the efficiency of the control is reduced because 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 has a complicated structure, making it difficult to miniaturize and high manufacturing cost, but the conventionally used SMPS (Switching Mode Power Supply) method, and the circuit is simple and high power rectification. There are trans (TRANS) method and half-wave rectification method, which are proportional to the size multiples but have low generation efficiency.

However, it is difficult to use the transformer method and the SMPS method due to the size constraints of the small generator.

In order to solve this problem, a generator can be manufactured by applying a half-wave rectification method in which the circuit can be miniaturized and the manufacturing cost is low.

However, in the generator to which the half-wave rectification method is applied, the output voltage is half-wave rectified, resulting in lower power generation efficiency, and heat generated for controlling the output voltage for noise correction causes serious damage to the device, resulting in a significant decrease in durability, and heat generation. As a result, there is a problem in that power is lost and energy efficiency is lowered.

Korean Patent Application Publication No. 10-2002-0042994

In order to solve the above problems, 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 part provided with an electromagnet part provided with a permanent magnet part provided with a permanent magnet part on one side and a voltage regulating coil provided on the other side, and when the rotor part is rotated. A power generation unit including a stator unit on which an excitation coil in which an induction magnetic field is formed is wound; A rectifier circuit connected to the excitation coil to convert an AC voltage generated from 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 unit circuit-connected to the measurement unit to selectively apply a voltage to the voltage control coil in either a forward direction or a reverse direction by comparing the voltage measured by the measurement unit with a preset range; And a digital output controller that is connected to the excitation coil and passes a voltage output in a preset limit range so that a final output voltage is substantially uniformly outputted.

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

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

In addition, the power generation unit, the rectification unit, the measurement unit, the polarity control controller and the digital output control unit further comprises a fault detection unit for automatically determining whether a failure of the zero crossing detection unit, wherein the failure detection unit the zero crossing detection unit When the zero-crossing signal is not detected for a predetermined time, a first fault signal is transmitted, and a second fault signal is transmitted when a voltage change is not detected by a sensing measuring unit circuit connected to the excitation coil and the voltage regulating coil. It is preferable to transmit a third fault signal when the final output voltage measured at the output terminal of the measurement unit is not detected, and when the output target value set by the polarity control controller unit and the voltage measured by the measurement unit are different from each other, it is preferable to transmit a fourth fault signal. Do.

And, the polarity control controller unit and the digital output control unit is connected to the circuit, the digital signal processing unit connected to the operation unit for the operation of the output voltage and output mode, the output is connected to the circuit to the digital signal processing unit, the final output from the output 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 final output voltage is inversely proportional to the number of revolutions per hour of the power generation unit 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 detected and cut off in real time through a digital microcomputer method through the digital output control unit connected to the circuit between the excitation coil and the rectifying unit. Since it is delivered substantially uniformly, the reliability of the product can be remarkably improved.

Second, the voltage amplitude generated by the excitation coil by controlling the polarity direction of the electromagnet part by controlling the voltage frequency in real time by adjusting the voltage frequency when the phase difference of the zero crossing signal detected when the AC voltage occurs in the excitation coil in real time. The quality of the final output voltage can be improved by providing a synergistic effect of automatically adjusting the range.

Third, unlike the prior art in which the range of RPM use was limited due to an overload when the engine overspeed was generated, the voltage generated through the power generation unit was corrected through the voltage addition inverter unit and the voltage drop transformer unit, regardless of the rotational speed of the driving body, thereby correcting the final output voltage. Since it can be freely adjusted digitally and used in full-band RPM, versatility can be remarkably improved.

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

Fifth, the fault detection unit automatically determines whether or not the power generation unit, the rectification unit, the measurement unit, the polarity control unit, and the digital output control unit fail, and transmits a variety of failure signals, so that the user can easily check the area where the failure occurs, so the operation is convenient. It can be significantly improved.

Sixth, as the control method of the digital output control unit is changed to an AC-DC constant voltage method rather than a half-wave method, heat generation is reduced and malfunctions due to noise are minimized, and space utilization is reduced when applied to external devices as it is smaller than a conventional generator. It can be significantly improved.

1 is a block diagram showing a digital power generation system according to an embodiment of the present invention.
Figure 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 showing a method of controlling an electromagnet in a digital power generation system according to an embodiment of the present invention.
4 is a flow chart showing a control method of a fault detection unit in the 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.

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 showing a digital power generation system according to an embodiment of the present invention, Figure 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. And, Figure 3 is a flow chart showing a control method of the electromagnet in the digital power generation system according to an embodiment of the present invention, Figure 4 is a control method of the failure detection unit in the digital power generation system according to an embodiment of the present invention. Fig. 5 is a flow chart showing a 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 rectification 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 generate power. In addition, it is preferable to understand that the digital signal processing unit 61, the polarity control controller unit 62, and the digital output control unit 70 are provided as one microcomputer, but are classified for each different function.

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

In addition, the rotor unit 20 is preferably provided to be connected to the power drive 10 provided as an engine of a vehicle or ship. In detail, it is preferable that the driving body 10 is provided to provide a driving force to the rotor unit 20 as it is rotated. 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 rotation shaft part 21 of the rotor part 20, the driving force of the driving body 10 may be converted into a rotational force of the rotation shaft part 21.

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

Further, on the outer periphery of the yoke body portion, the permanent magnet portion 23 and a tapered fixing portion provided to fix the permanent magnet portion 23 to the yoke body portion may be alternately disposed.

On the other hand, the electromagnet part 25 is disposed to surround the other side of the rotor part 20, but it is integrally rotated when the rotation shaft part 21 is rotated, and a voltage regulating coil 26 is preferably connected to the circuit inside the radial direction. . Here, the yoke body portion may be disposed to surround one side of the rotation shaft part 21, and the electromagnet part 25 may be disposed surrounding the other side of the outer circumference of the rotation shaft part 21. That is, the yoke body portion and the electromagnet portion 25 may be arranged in a tandem shape. Here, the voltage regulating coil 26 is preferably connected to a circuit connected to a polarity control controller 62 that selectively converts the current flow into one of forward and reverse directions.

At this time, when the rotation 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 rotated in conjunction with each other at the same time. Through this, when the rotor unit 20 is rotated at the same time when the driving body 10 is rotated, an inductive magnetic field may 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 23 and the electromagnet part 25 disposed on the radial outer circumference of the permanent magnet part 23 are rotated at the same time. I can. Through this, each magnetic field generated by the permanent magnet part 23 and the electromagnet part 25 in the stator part 30 is generated without interfering with each other, and selectively the magnetic field generated by the electromagnet part 25 The intensity of the AC voltage output to the rectifier 51 may be adjusted.

In other words, as current in any one of the forward and reverse directions is applied to the voltage control coil 26 and the polarity direction of the electromagnet part 25 is selectively adjusted, it is generated in the excitation coil 31 of the stator part 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 rotated in response to the rotational 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 rotation speed of the driving body 10, and the stator part The intensity of the AC voltage generated at (30) can be adjusted.

In addition, it is preferable that the core portion 30a of the stator portion 30 is provided in a hollow shape and disposed outside the rotor portion 20 in the radial direction. Here, the core portion (30a) is disposed to surround the outer periphery of the permanent magnet portion (23) and the electromagnet portion (25) of the rotor portion (20), the rotor portion (20) and a predetermined distance from each other It is preferred to be placed.

In addition, the core portion (30a) is preferably disposed to surround the outer periphery of the permanent magnet portion (23) and the tapered fixing portion and the electromagnet portion (25). Here, the axial length of the core part 30a is formed to correspond 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, the inner diameter of the core portion (30a) is preferably formed to exceed the outer diameter of the rotor portion (20).

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

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

In addition, the partition portion is preferably connected between the first bobbin and the second bobbin so that the induction magnetic field of the excitation coil 31 generated by the permanent magnet portion 23 and the electromagnet portion 25 is divided, respectively. Do. In this case, the induction magnetic field is preferably understood as a rotating magnetic field generated between the stator units 30 as the rotor unit 20 is rotated.

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

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

Here, the excitation coil 31 is partitioned based on the partition portion so that the inductive magnetic field generated by the permanent magnet portion 23 and the electromagnet portion 25 is respectively divided, and the first bobbin and the second bobbin It is preferable that each section is wound. That is, the excitation coil 31 may be divided based on the partitioning portion and wound on one side and the other side in the axial direction of the core portion 30a.

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

In addition, AC voltage is generated in the excitation coil 31 of the stator part 30 as the rotor part 20 is interlocked with the drive body 10 and rotates in response to the rotational speed of the drive body 10 It is desirable 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 irrespective of the rotation speed of the driving body 10 It is preferable to understand that the AC voltage generated in the unit 30 is regulated.

Therefore, the excitation coil 31 is divided into the first bobbin facing the permanent magnet part 23 and the second bobbin facing the electromagnet part 25, respectively, and the first bobbin and the second bobbin are wound. 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 inductive magnetic fields generated by 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 part 23 and the excitation coil 31 and the inductive magnetic field by the electromagnet part 25 and the excitation coil 31 are generated by being partitioned from each other, the final output AC voltage The output of is increased and the output sensitivity can be improved.

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

Here, it is preferable that the partition portion is disposed at the central portion in the axial direction of the core portion 30a and is 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 sheets. In detail, the diameter of the partition portion formed of a plurality of steel sheets is preferably formed to substantially correspond to the diameter of the bobbin formed by stacking with silicon steel sheets. Here, the partition portion is disposed so as to surround the outer boundary of the interface between the first bobbin and the second bobbin and is not connected through welding, but may be laminated and formed of a plurality of stainless steel sheets to be connected to the bobbin.

Through this, the partition portion provided as a stainless steel sheet between the first bobbin and the second bobbin formed by stacking a plurality of silicon steel sheets may be stacked while forming 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 portion 23 and the electromagnet portion 25 can be minimized, thereby improving product precision.

In addition, it is preferable that the first cover portion 30b and the second cover portion 30c are respectively disposed on both sides of the core portion 30a in the axial direction to be coupled to each other. In detail, the first cover part 30b is disposed on an end side of the core part 30a adjacent to the electromagnet part 25, and is provided in a cylindrical shape with one side open, and the 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, one side is provided in an open cylindrical shape and corresponding 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 finely larger than the outer diameter of one end of the rotation shaft part 21. In this case, a device such as a bearing may be further provided between the inner circumference of the second cover part 30c and one end of the rotation shaft part 21 in some cases.

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 can be placed and rotated.

Meanwhile, it is preferable that one side of the rectifying part 51 is connected to the excitation coil 31 to convert the AC voltage generated by the excitation coil 31 into a DC voltage. Here, the rectifying unit 51 may be provided as a rectifier circuit or a microprocessor, and the structure is not limited thereto as long as it 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 rectifying unit 51.

For example, the rectifier 51 may be provided with three pairs of circuits in which two diodes are connected in series, but are connected in parallel, and the output terminal of the diode may be provided as a positive voltage terminal and the input terminal of the diode may be 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 portion 30a may be connected to each circuit between each diode connected in series.

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

In this case, the rectifying unit 51 may further include a voltage addition inverter provided as a circuit or a microprocessor for adding 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 trans part provided as a microprocessor or a circuit for a voltage drop trans through the power supply part 63 may be further provided at the output terminal of the excitation coil 31.

Meanwhile, the measuring unit 52 is preferably provided connected to the output terminal of the rectifying unit 51 to measure the DC voltage and current converted by the rectifying unit 51. Here, it is preferable that the measurement unit 52 includes a voltage measurement unit and a current measurement 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. In this case, the measurement unit 52 may be connected to the digital signal processing unit 61 in a circuit to transmit DC voltage and current intensity signals to the polarity control controller unit 62. Accordingly, the polarity control controller 62 may control the polarity direction of the electromagnet 25 to be selectively switched in response to the DC voltage intensity measured by the measurement unit 52.

Meanwhile, an output unit (n) connected to the output terminal of the measurement 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 connected to a circuit to supply the DC voltage rectified by the rectifying unit 51 to the charging object. Accordingly, the power generated by the power generation unit 200 may be supplied as the output unit n is connected to the charging object.

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

Here, the voltage control coil 26 is a circuit in the polarity control controller unit 62 for selectively converting the current flow into either a forward direction or a reverse direction so that the DC voltage rectified by the rectifying unit 51 is maintained in a preset range. It is preferred to be connected.

In addition, the polarity control controller unit 62 may be directly connected to a circuit via the digital signal processing unit 61 to a DC supply unit provided separately, and the digital signal so that the direction of the current supplied from the DC supply unit is selectively controlled. It is preferable that the signal is connected to the signal processing unit 61. Here, it is preferable to understand that the digital signal processing unit 61, the polarity control controller unit 62, and the digital output control unit 70 are provided as one microcomputer, but are classified for each different function.

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

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, the input terminal of the diode and the 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 respectively 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 and connected to the positive end of the DC supply unit. In addition, the third switching element and the other node of the fourth switching element may be connected in parallel and connected to the positive end of the DC supply unit.

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

Meanwhile, referring to FIG. 3, it is preferable that the AC voltage generated by the excitation coil 31 is converted into a DC voltage by the rectifying unit 51 (s10). In addition, it is preferable to compare and determine whether the DC voltage measured by the measurement 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 unit 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 a preset value of 200V, the DC voltage can be restored close to 200V as the current flow through the voltage regulating coil 26 is automatically controlled in the reverse direction. .

Accordingly, the direction of voltage and current generated between the permanent magnet part 23 and the excitation coil 31 and the direction of voltage and current generated between the electromagnet part 25 and the excitation coil 31 are opposite to each other. Formed, 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 200V, which is a preset value, the DC voltage may be restored close to 200V as the current flow through the voltage regulating coil 26 is automatically controlled in the forward direction.

Accordingly, the direction of voltage and current generated between the permanent magnet part 23 and the excitation coil 31 and the direction of voltage and current generated between the electromagnet part 25 and the excitation coil 31 are in the same direction. It can be formed to reinforce the induced power.

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

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

That is, due to the characteristics of the conventional analog generator, the voltage value finally output is finely increased or decreased based on the preset value, but in the present invention to which digital control is applied, the difference between the maximum and minimum voltage values is substantially in units of one millionth of a second. The reliability of the output voltage is improved and the quality of the product can be remarkably improved accordingly, since is adjusted in real time to quickly converge to zero and minimized. At the same time, the power generation unit 200 is smaller than that of a conventional generator, so that space utilization can be significantly improved when applied to an external device.

Meanwhile, referring to FIG. 1, the digital output control unit 70 is provided to pass only the voltage output in a preset limit range so that the final output voltage is substantially uniformly output by being connected to the excitation coil 31. This is desirable. At this time, the preset limit range refers to a preset voltage frequency range for stably driving the charging target when the power generated by the excitation coil 31 is supplied to the charging target, and a voltage frequency deviating from the limit range It is preferable 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 and output when compared with the average voltage frequency output from the excitation coil 31.

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

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 a frequency unit 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 detection unit 71 is preferably provided to analyze in real time an input waveform input from the excitation coil 31 to the zero crossing detection unit 71.

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

In addition, the digital output control unit 70 is a circuit connected between the zero crossing detection unit 71 and the rectification unit 51 to substantially reduce noise by real-time adjusting the voltage frequency when the phase difference of the zero crossing signal deviates from a preset value. 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 provided to remove noise generated by deviating from the limit range in real time by timing operation control using a microcomputer method.

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

In addition, the limit setting unit 72 may reinforce or cancel an output frequency deviating from the limit range input from the excitation coil 31 in a microcomputer digital method and transmit it to the rectifying unit 51. In this case, the digital output control unit 70 may be connected to the power supply unit 63 to augment 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 by a cause such as a variation in arrangement of circuit elements or power supply characteristics is generated between the excitation coil 31 and the rectification unit 51. Through the digital output control unit 70 connected to the circuit, it is detected and blocked in real time through a digital microcomputer method. Accordingly, since the phase of the final output voltage is transmitted substantially uniformly, reliability of the product can be remarkably improved.

Meanwhile, the digital power generation system 400 is circuitly connected to the polarity control controller unit 62 and the digital output control unit 70, and is communicatively connected to the operation unit 65 for operation of the final output voltage and output mode. It is preferable to further include the digital signal processing unit 61. In this case, it is preferable to understand that the digital signal processing unit 61, the polarity control controller unit 62, and the digital output control unit 70 are provided as one microcomputer, but are classified for each different function.

Moreover, it is preferable that the digital signal processing unit 61, the polarity control controller unit 62, and the digital output control unit 70 are circuit-connected to the power supply unit 63 provided to supply 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 supply device provided inside the vehicle.

That is, the digital signal processing unit 61, the polarity control controller 62, and the digital output control unit through the supply of power from the power supply unit 63 provided separately from the power generated by the power generation unit 200 ( 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 natural 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 an output voltage final output from the output unit n circuit-connected to the output terminal of the measurement 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 easily checked through the display unit 64, the usability can be improved.

In addition, the operation unit 65 may be provided to adjust the output voltage characteristic finally output from the output unit (n) of the digital power generation system 400 by a user, and the operation state through the operation unit 65 May be provided to be displayed in association with the display unit 64. At this time, the operation 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 may be connected to the digital signal processing unit 61 for a bidirectional protocol. have.

On the other hand, the digital power generation system 400 is the zero crossing of the power generation unit 200, the rectification 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 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, when the power generation unit 200 is operated to generate power to the excitation coil 31, the zero crossing detection unit 71 It is determined whether a crossing signal is detected for a preset time (s20).

Here, the fault detection unit 61a transmits a first fault 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 fault 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 unit. In addition, after checking the first fault signal, the user may check whether the excitation coil 31 is connected, whether the power generation unit 200 is faulty, or the like.

Subsequently, the fault detection unit 61a determines whether the polarity control unit 62 normally controls the voltage control coil 26 (s22). That is, the fault detection unit 61a is the polarity 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 to control the polarity direction.

Here, the digital power generation system 400 is a circuit connected to the output terminal of the excitation coil 31 to measure the voltage at the output terminal of the excitation coil 31, and the voltage regulating coil 26 A sensing measuring unit including a second sensing measuring unit that is connected to the circuit to measure the voltage of the voltage adjusting coil 26 may be further included.

In addition, the failure detection unit (61a) is a second failure in the digital signal processing unit (61) when a voltage change by the detection and measurement unit connected to the excitation coil (31) and the voltage control coil (26) is not detected. The signal is transmitted (s23). In this case, the voltage change means that the polarity direction of the voltage control coil 26 is automatically adjusted in response to the increase or decrease of the voltage of the excitation coil 31 so that the final output voltage is maintained in a preset range. For example, when the polarity direction of the voltage control coil 26 is not adjusted even though the voltage of the excitation coil 31 is increased, the second fault signal may be transmitted.

In addition, after checking the second fault signal, the user checks whether the polarity control controller unit 62 is faulty, whether the voltage control coil 26 is connected, whether the excitation coil 31 is connected, and the power generation unit 200 You can check whether or not there is a problem.

Subsequently, the failure detection unit 61a determines whether the output terminal of the measurement unit 52, that is, the final output voltage measured by the output unit n, is detected (s24). Here, the fault detection unit 61a transmits a third fault 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). In addition, after checking the third fault signal, the user may check whether the output unit n is connected, the excitation coil 31 and each element inside the power generation unit 200, and the like.

Further, the fault detection unit 61a determines whether the output target value set by the polarity control controller unit 62 and the voltage measured by the measurement unit 52 coincide with each other (s26). At this time, when the output target value set by the polarity control controller unit 62 and the voltage measured at the output terminal of the measurement unit 52 are different from each other, the fault detection unit 61a causes a fourth failure in the digital signal processing unit 61 The signal is transmitted (s27). In addition, after checking the fourth fault signal, the user may check whether the polarity control controller 62 is faulty, and whether the excitation coil 31 and the voltage control coil 26 are connected.

Further, 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 be provided as a speaker, etc., but is not limited thereto. In addition, the notification means may generate the notification means in a different manner for each of the first fault signal, the second fault signal, the third fault signal, and the fourth fault signal. For example, the notification means may generate a beep sound of a different color or a different number and interval for each fault signal.

Accordingly, the failure detection unit 61a determines whether the power generation unit 200, the rectification unit 51, the measurement unit 52, the polarity control controller unit 62, and the digital output control unit 70 are Since a variety of fault signals are transmitted by automatically determining sequentially, the user can easily check the fault occurrence area, so that 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 operation unit 65.

Here, the digital signal processing unit 61 is applied to the polarity control controller unit 62 so that the RPM of the power generation unit 200 and the final output voltage at the output unit n are proportional in the automatic mode. The first manipulation signal can be applied. At this time, when the first operation signal is applied to the polarity control controller 62, the polarity control controller 62 adjusts the voltage output from the excitation coil 31 proportionally to the voltage control coil 26. ) Can be controlled.

In addition, the digital signal processing unit 61 is the polarity control controller unit so that the final output voltage from the output unit (n) is maintained at a preset value regardless of the number of revolutions per hour of the power generation unit 200 in the setting mode ( 62) can be applied to the second operation signal. Here, when the second operation signal is applied to the polarity control controller 62, the polarity control controller 62 adjusts 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 performs a third operation on 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 in inverse proportion in the down mode. Signal can be applied. At this time, when the third operation signal is applied to the polarity control controller 62, the polarity control controller 62 controls the voltage control coil 26 so that the voltage output generated by the excitation coil 31 is adjusted in inverse proportion. ) Can be controlled.

Moreover, the digital signal processing unit 61 is proportional to the number of revolutions per hour (RPM) of the power generation unit 200 and the final output voltage at the output unit n in the turbo mode, but at the time of application of the first operation signal. A fourth manipulation signal may be applied to the polarity control controller 62 so as to increase from the final output voltage.

Therefore, when the automatic mode, the setting mode, the down mode, and the turbo mode are input and switched in response to the user's operation, the final output voltage from the output unit (n) is applied to the revolutions per hour (RPM) of the power generation unit 200. Correspondingly, it can be freely adjusted selectively, so 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 conventional RST analog phase control input, thereby increasing energy efficiency and reducing the cost due to simplification of the device. Economic feasibility can be significantly improved. Moreover, the variety of available devices can improve component supply and demand mass production.

In addition, in addition to the power generation function through the power generation unit 200, the digital signal processing unit 61 provided as a microcomputer, the polarity control controller unit 62, and the digital output control unit 70 through the power generation unit ( The power generation voltage of 200) can be adjusted digitally, so the usability can be improved.

Through this, 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 a preset value is adjusted in real time to substantially eliminate noise and control the polarity direction of the electromagnet unit 25 Through this, the quality of the final output voltage may be improved by providing a synergy effect in which the amplitude range of the voltage generated by the excitation coil 31 is automatically adjusted.

At the same time, unlike the prior art in which an overload occurs when the engine is overspeed and the range of use of RPM is limited, the voltage generated through the power generation unit 200 is added to the inverter unit and the voltage, regardless of the rotational speed of the driving body 10. The versatility can be remarkably improved since the final output voltage can be freely adjusted in a digital manner by correcting through the dropping transformer and can be used at full-band RPM.

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

At this time, the terms such as "include", "comprise" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should not be construed as being able to include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

10: drive body 20: rotor portion
23: permanent magnet part 25: electromagnet part
26: voltage regulation coil 30: stator part
31: female coil 51: rectifier
52: measurement unit 61: digital signal processing unit
61a: fault detection unit 62: polarity control controller unit
63: power supply unit 64: display unit
65: control 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)

A stator wound with an electromagnet part with a permanent magnet part provided on one side and a voltage regulating coil provided on the other side, and an excitation coil that forms an induction magnetic field when the rotor part is rotated. A power generation unit including wealth;
A rectifier circuit connected to the excitation coil to convert an AC voltage generated from 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 unit circuit-connected to the measurement unit to selectively apply a voltage to the voltage control coil in either a forward direction or a reverse direction by comparing the voltage measured by the measurement unit with a preset range; And
A digital power generation system comprising a digital output control unit that is connected to the excitation coil and passes a voltage output in a preset limit range so that a final output voltage is substantially uniformly output. The method of claim 1,
The digital output control unit
A zero-crossing detection unit circuit-connected to the excitation coil and for real-time detection of a zero-crossing signal when an AC voltage is generated from the excitation coil,
A digital power generation system comprising: a limit setting unit connected in a circuit between the zero-crossing detection unit and the rectifying unit to substantially block noise by adjusting a voltage frequency in real time when the phase difference of the zero-crossing signal deviates from a preset value. . The method of claim 1,
The polarity control controller unit is circuitly 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 measurement unit exceeds a preset range, the polarity control controller applies a reverse current to the voltage control coil,
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. The method of claim 1,
The power generation unit, the rectification unit, the measurement unit, the polarity control controller unit and the digital output control unit further comprises a fault detection unit for automatically determining whether or not a failure of the zero crossing detection unit, wherein the failure detection unit
When the zero-crossing signal is not detected for a predetermined time by the zero-crossing detection unit, a first fault signal is transmitted,
Transmitting a second fault signal when a voltage change is not detected by the excitation coil and a sensing measuring unit circuit connected to the voltage regulating coil,
When the final output voltage measured at the output terminal of the measurement unit is not detected, a third fault signal is transmitted,
When the output target value set by the polarity control controller unit and the voltage measured by the measuring unit are different from each other, a fourth fault signal is transmitted. The method of claim 1,
A digital signal processing unit circuit-connected to the polarity control controller unit and the digital output controller unit and connected to an operation unit for operation of an output voltage and an output mode;
The digital signal processing unit further comprises a display unit connected to the circuit to display the output voltage final output from the output unit,
The digital signal processing unit
In the automatic mode, the first 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 proportional,
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 applying a third operation signal to the polarity control controller so that the number of revolutions per hour of the power generation unit and the final output voltage are in inverse proportion to each other in a down mode.

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