CN115085606A - Design method of high-voltage direct-current self-generating mobile power station - Google Patents
Design method of high-voltage direct-current self-generating mobile power station Download PDFInfo
- Publication number
- CN115085606A CN115085606A CN202210645647.4A CN202210645647A CN115085606A CN 115085606 A CN115085606 A CN 115085606A CN 202210645647 A CN202210645647 A CN 202210645647A CN 115085606 A CN115085606 A CN 115085606A
- Authority
- CN
- China
- Prior art keywords
- voltage
- current
- vehicle
- value
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 37
- 230000005284 excitation Effects 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 21
- 230000033228 biological regulation Effects 0.000 claims abstract description 20
- 230000000670 limiting effect Effects 0.000 claims abstract description 10
- 238000010248 power generation Methods 0.000 claims abstract description 10
- 210000000078 claw Anatomy 0.000 claims abstract description 4
- 230000002829 reductive effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/006—Means for protecting the generator by using control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a design method of a high-voltage direct-current self-generating mobile power station, which comprises the design of a power generation system and the design of a voltage regulation controller; the power generation system design includes: connecting the power input of the vehicle-mounted generator with the power output of the speed-increasing gear box; connecting a power input shaft of the speed-up gearbox with a power output shaft of an automobile chassis engine; the stator winding of the vehicle-mounted generator adopts two sets of stator coils which are connected in series; the vehicle-mounted generator adopts a structure that two sets of excitation coils and two sets of claw pole rotors are mutually mounted back to back; the output of the vehicle-mounted generator outputs direct current through a three-phase rectifier; the voltage regulation controller design includes: designing a working power supply; designing an output voltage sampling circuit; voltage setting circuit design; designing an output current sampling circuit; designing a PID (proportion integration differentiation) regulation and pulse width modulation circuit; and designing a current limiting circuit. The invention realizes that the vehicle-mounted generator can normally generate DC500V direct current power supply in the processes of idle starting and normal driving of the automobile chassis engine.
Description
Technical Field
The invention relates to a design method of a mobile power station, in particular to a design method of a high-voltage direct-current self-generating mobile power station.
Background
The traditional mobile power station usually selects medium and small diesel or gasoline generator sets as emergency power supply devices in field operation, namely an automobile power station or a trailer power station which is formed by utilizing a set of independent generator sets. Because the generator set comprises an engine (a gasoline engine or a diesel engine) as a power source, the size and the weight of the generator set are relatively large and heavy, the generator set occupies the limited space of a vehicle, increases the weight of the vehicle, and cannot meet the maneuvering and flexible requirements of field operation. In order to reduce the space and the weight of a vehicle occupied by an independent generator set and reduce the cost, the maneuvering performance of a mobile power station in the running process is improved, a chassis engine is considered to be used as power to drive a generator to rotate and generate power under the running or parking condition, the power is provided for the whole vehicle, and the mobile power station adopting the power generation mode is called as a self-generating mobile power station.
In recent years, the role of self-generating mobile power stations in the field of power supply has been emphasized gradually with the increase of the demand of various mobile devices for electric power. In the self-generating mobile power station under the parking condition, the rotation speed of a chassis engine can be kept constant relatively and easily (the rotation speed of the chassis engine can be kept relatively constant by additionally arranging a speed regulating device), but when a vehicle is in a running state, the vehicle-mounted generator is difficult to output a stable power supply in the large rotation speed range due to the large change of the rotation speed range of the chassis engine (the rotation speed change range is generally 500 r/min-2200 r/min).
Disclosure of Invention
The invention aims to provide a design method of a high-voltage direct-current self-generating mobile power station, which can ensure the power generation quality under the driving or parking condition.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the design method of the high-voltage direct-current self-generating mobile power station comprises the steps of designing a power generation system and designing a voltage regulation controller;
the power generation system design comprises
Step 1.1, connecting the power input of a vehicle-mounted generator with the power output inner spline of a speed-up gear box through an outer spline;
step 1.2, the power input shaft of the speed-up gear box is in transmission connection with the power output shaft of the automobile chassis engine through a coupler;
step 1.3, the stator winding of the vehicle-mounted generator adopts two sets of stator coils which are connected in series, and the voltage drop of each set of stator coil is half of that of the stator winding;
step 1.4, the vehicle-mounted generator adopts a structure that two sets of excitation coils and two sets of claw pole rotors are mutually arranged back to back, and the two sets of excitation coils are arranged in parallel to form an excitation winding, namely a magnetic field parallel structure is adopted;
step 1.5, the output loop of the vehicle-mounted generator outputs DC500V direct current through a three-phase rectifier and is used for supplying power to a load;
the voltage regulating controller design comprises
Step 2.1, designing a working power supply:
the working power supply consists of a first working power supply and a second working power supply; the first working power supply is a vehicle-mounted 24V storage battery, and the second working power supply is taken from a three-phase tap of a stator winding of a vehicle-mounted generator and outputs 60V direct-current voltage after rectification;
step 2.2, designing an output voltage sampling circuit:
a voltage sampling value Ugf of the voltage regulation controller is obtained by taking the three-phase alternating-current voltage before the three-phase rectifier of the vehicle-mounted generator output loop outputs, and then carrying out voltage reduction, isolation and rectification on the three-phase alternating-current voltage by a transformer;
step 2.3, voltage setting circuit design:
the voltage setting circuit provides a voltage regulation reference signal value Ugd, the reference signal value Ugd is a voltage value preset inside the voltage regulation controller;
step 2.4, designing an output current sampling circuit:
the method comprises the steps that a three-phase current transformer is adopted to detect the current of an output loop of the vehicle-mounted generator in real time, and the current is converted into a voltage value according to a linear proportion and is superposed with a reference signal value Ugd to obtain a reference signal superposed value Ugdj, so that the output voltage of the vehicle-mounted generator is controlled to be stable;
step 2.5, PID adjustment and pulse width modulation circuit design:
detecting a voltage sampling value Ugf of an output loop of the vehicle-mounted generator in real time by adopting a PWM (pulse width modulation) controller, comparing the voltage sampling value with the reference signal superposition value Ugdj to obtain a difference value, outputting two PWM waveforms with adjustable duty ratios according to the difference value, and taking the two PWM waveforms with adjustable duty ratios as MOS (metal oxide semiconductor) switching tubes (I) D A control signal with a current of at most 30A); the MOS switch tube is connected with the excitation winding of the vehicle-mounted generator in series, and the excitation current of the excitation winding of the vehicle-mounted generator is controlled by controlling the on-off of the MOS switch tube, so that the output voltage of the vehicle-mounted generator is adjusted, and closed loop control is formed;
the excitation current range designed by the circuit is wider, so that the regulation range of the output voltage of the vehicle-mounted generator is larger, larger excitation current can be output when the chassis engine works at low rotating speed, the voltage of the vehicle-mounted generator is stabilized at DC500V, and the contradiction between the static state and the dynamic state of the system is reasonably solved.
Step 2.6, designing a current limiting circuit:
a first voltage comparator consisting of an integrated operational amplifier is adopted, and the output of the first voltage comparator acts on the voltage given circuit through a diode; the current sampling value Ui obtained by the output current sampling circuit is compared with a set current limiting threshold value, when the current sampling value Ui is smaller than the set current limiting threshold value, the first voltage comparator outputs a high level, the diode is cut off in a reverse direction, and the normal work of the voltage given circuit is not influenced; when the value of the current sampling value Ui is larger than the set current limiting threshold value, the first voltage comparator outputs a low level, the diode is conducted in the forward direction, the voltage reference value Ugd is pulled down, and the output voltage of the vehicle-mounted generator is reduced; when the load continues to increase, the vehicle-mounted generator enters a constant current mode, namely, the output current is kept unchanged when the output voltage is continuously reduced.
Optionally, the voltage regulation controller design further includes a voltage, current and rotation speed protection circuit design:
and a second voltage comparator consisting of an integrated operational amplifier is adopted, the voltage value, the current value and the rotating speed value which are sampled in real time are compared with a set protection threshold value, and when the voltage value, the current value and the rotating speed value exceed the protection threshold value, the vehicle-mounted generator stops working.
Optionally, the speed transmission ratio of the power output shaft to the power input shaft of the speed-increasing gearbox is 2: 1, and the vehicle-mounted generator output loop outputs DC500V direct current through the three-phase rectifier.
The invention has the advantages that the vehicle-mounted generator can normally generate DC500V direct-current power supply when the engine of the automobile chassis is started at an idle speed (the rotating speed is generally about 550r/min +/-50 r/min) and in the normal running process (the rotating speed is basically kept between 1000r/min and 2200 r/min). The problem of current on-vehicle generator receive self structural design restriction, the rotational speed can only stably send DC500V direct current power supply when more than 1000r/min is solved.
Drawings
FIG. 1 is a schematic block diagram of the design method of the present invention.
Fig. 2 is an electrical schematic of the on-board generator of the present invention.
Fig. 3 is a schematic structural diagram of the vehicle-mounted generator according to the invention.
Fig. 4 is a schematic block circuit diagram of the voltage regulator controller of the present invention.
Fig. 5 is a schematic block circuit diagram of the first voltage comparator according to the present invention.
Fig. 6 is a schematic block circuit diagram of the second voltage comparator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The design method of the high-voltage direct-current self-generating mobile power station comprises the steps of designing a power generation system and designing a voltage regulation controller;
as shown in fig. 1-3, the power generation system design includes the following steps:
step 1.1, connecting the power input of a vehicle-mounted generator with the power output inner spline of a speed-up gear box through an outer spline;
step 1.2, a power input shaft of a speed-up gear box is in transmission connection with a power output shaft of an engine of an automobile chassis through a coupler; the transmission ratio of the rotating speed of the power output shaft and the rotating speed of the power input shaft of the speed-increasing gear box is 2: 1, the rotating speed of the automobile chassis engine is 550r/min +/-50 r/min when the automobile chassis engine is started at idle speed, and the rotating speed of the automobile chassis engine is 1000 r/min-2200 r/min when the automobile chassis engine is in a normal running process.
Step 1.3, a stator winding 1 of the vehicle-mounted generator adopts two sets of stator coils DF which are connected in series, and the voltage drop of each set of stator coil DF is half of that of the stator winding; therefore, the magnetic field density of the vehicle-mounted generator is reduced, and the output voltage of the vehicle-mounted generator is effectively improved. The stator winding of the design is double-layer lap winding and adopts H-level insulation.
Step 1.4, the vehicle-mounted generator adopts a mutual back-to-back installation structure of two sets of excitation coils LF and two sets of claw pole type rotors, and the two sets of excitation coils LF are arranged in parallel to form an excitation winding 2, namely a magnetic field parallel structure is adopted; the main magnetic pole and the suspended magnetic pole of the claw-pole rotor form a rotor structure with eight pairs N, S alternated.
Step 1.5, the output loop of the vehicle-mounted generator outputs DC500V direct current through two three-phase silicon controlled rectifiers UR connected in series for supplying power to a load.
As shown in fig. 4-6, the voltage regulator controller design includes the following steps:
step 2.1, designing a working power supply:
the working power supply consists of a first working power supply and a second working power supply; the first working power supply is a vehicle-mounted 24V storage battery; the second working power supply is taken from a three-phase tap of a stator winding 1 of the vehicle-mounted generator, and outputs 60V direct current voltage (shown in figure 2) after passing through a three-phase rectifier U.
Step 2.2, designing an output voltage sampling circuit:
because the two ends of the bus in the output loop of the vehicle-mounted generator are connected with the high-capacity capacitor in parallel, the voltage value of the bus directly sampled can affect the voltage regulation performance of the voltage regulation controller; therefore, the voltage sampling value Ugf of the voltage regulation controller is obtained by taking the three-phase ac voltage before being output from the three-phase scr UR in the output circuit of the vehicle-mounted generator, and then performing transformer step-down, isolation and rectification.
Step 2.3, voltage setting circuit design:
the voltage setting circuit provides a voltage regulation reference signal value Ugd, reference signal value Ugd being a voltage value preset internally within the voltage regulation controller.
Step 2.4, designing an output current sampling circuit:
the current transformer is adopted to detect the current of the output loop of the vehicle-mounted generator in real time, and the current is converted into a voltage value according to a linear proportion and is superposed with a reference signal value Ugd to obtain a reference signal superposed value Ugdj, so that the output voltage of the vehicle-mounted generator is controlled to be stable;
the principle is as follows: after the load is added, the output voltage of the vehicle-mounted generator is reduced along with the load, and the reference signal value Ugd is increased after superposition, so that the output voltage increase value generated by current feedback and the on-load output voltage decrease value of the vehicle-mounted generator can be mutually offset, and the output voltage value is ensured to be basically unchanged when the load is increased.
Step 2.5, PID adjustment and pulse width modulation circuit design:
a PWM (pulse width modulation) controller (a domestic military chip G7W 1525) is adopted to detect the voltage sampling value Ugf of the output loop of the vehicle-mounted generator in real time, the voltage sampling value is compared with a reference signal superposition value Ugdj to obtain a difference value, two PWM waveforms with adjustable duty ratios are output according to the difference value, and the two PWM waveforms with adjustable duty ratios are used as MOS switching tubes (I) D A control signal with a current of at most 30A); the MOS switch tube is connected with the excitation winding of the vehicle-mounted generator in series, and the excitation current of the excitation winding of the vehicle-mounted generator is controlled by controlling the on-off of the MOS switch tube, so that the output voltage of the vehicle-mounted generator is regulated, and closed loop control is formed;
the range of the exciting current designed by the circuit is wider, so that the adjusting range of the output voltage of the vehicle-mounted generator is wider, larger exciting current can be output when the vehicle-mounted generator works at a low rotating speed, the voltage of the vehicle-mounted generator is stabilized at DC500V, and the contradiction between the static state and the dynamic state of the system is reasonably solved.
Step 2.6, designing a current limiting circuit:
a first voltage comparator consisting of an integrated operational amplifier U1 is adopted, and the output end of the first voltage comparator is connected with a reference signal value Ugd of a voltage setting circuit through the anode of a diode D1; a current sampling value Ui obtained by the output current sampling circuit is compared with a set current-limiting threshold value Uiref1, when the current sampling value Ui is smaller than a set current-limiting threshold value Uiref1, the first voltage comparator outputs a high level, the diode D1 is cut off in a reverse direction, and normal work of the voltage given circuit is not influenced; when the value of the current sampling value Ui is larger than the set current limiting threshold value Uiref1, the first voltage comparator outputs a low level, the diode D1 is conducted in the forward direction, the voltage reference value Ugd is pulled down, and the output voltage of the vehicle-mounted generator is reduced; when the load continues to increase, the vehicle-mounted generator enters a constant current mode, namely, the output current is kept unchanged when the output voltage is continuously reduced.
Step 2.7, designing a voltage, current and rotating speed protection circuit:
a second voltage comparator consisting of integrated operational amplifiers U2-1, U2-2 and U2-3 is adopted, and a voltage sampling value, a current sampling value and a rotating speed sampling value which are sampled in real time are respectively connected with the non-inverting input ends of the integrated operational amplifiers U2-1, U2-2 and U2-3; the set voltage protection threshold, the set current protection threshold and the set rotating speed sampling threshold are respectively connected with the inverting input ends of the integrated operational amplifiers U2-1, U2-2 and U2-3; the output ends of the integrated operational amplifiers U2-1, U2-2 and U2-3 are respectively connected with a power-off loop of the vehicle-mounted generator through diodes D2, D3 and D4; when any one sampling value of the voltage sampling value, the current sampling value and the rotating speed sampling value is larger than the corresponding protection threshold value, the corresponding diode is conducted, the power-off loop of the vehicle-mounted generator works, and the vehicle-mounted generator stops working; the damage to equipment and personnel caused by abnormal operation of the vehicle-mounted generator is avoided.
The traditional voltage, current and rotating speed (overspeed) protection can be realized only by adding a special generator set controller; according to the invention, through the design of the voltage, current and rotating speed protection circuit, a special generator set controller is not required to be additionally arranged, and the installation space and the cost are saved.
Claims (3)
1. A design method of a high-voltage direct-current self-generating mobile power station comprises the steps of designing a power generation system and designing a voltage regulation controller; the method is characterized in that:
the power generation system design comprises
Step 1.1, connecting the power input of a vehicle-mounted generator with the power output inner spline of a speed-up gear box through an outer spline;
step 1.2, the power input shaft of the speed-up gear box is in transmission connection with the power output shaft of the automobile chassis engine through a coupler;
step 1.3, the stator winding of the vehicle-mounted generator adopts two sets of stator coils which are connected in series, and the voltage drop of each set of stator coil is half of that of the stator winding;
step 1.4, the vehicle-mounted generator adopts a structure that two sets of excitation coils and two sets of claw pole rotors are mutually arranged back to back, and the two sets of excitation coils are arranged in parallel to form an excitation winding, namely a magnetic field parallel structure is adopted;
step 1.5, outputting direct current by an output loop of the vehicle-mounted generator through a three-phase rectifier, and supplying power to a load;
the voltage regulating controller is designed by comprising
Step 2.1, designing a working power supply:
the working power supply consists of a first working power supply and a second working power supply; the first working power supply is a vehicle-mounted 24V storage battery, and the second working power supply is taken from a three-phase tap of a stator winding of a vehicle-mounted generator and outputs 60V direct-current voltage after rectification;
step 2.2, designing an output voltage sampling circuit:
a voltage sampling value Ugf of the voltage regulation controller is obtained by taking the three-phase alternating-current voltage before the three-phase rectifier of the vehicle-mounted generator output loop outputs, and then carrying out voltage reduction, isolation and rectification on the three-phase alternating-current voltage by a transformer;
step 2.3, voltage setting circuit design:
the voltage setting circuit provides a voltage regulation reference signal value Ugd, the reference signal value Ugd is a voltage value preset inside the voltage regulation controller;
step 2.4, designing an output current sampling circuit:
the method comprises the steps that a three-phase current transformer is adopted to detect the current of an output loop of the vehicle-mounted generator in real time, and the current is converted into a voltage value according to a linear proportion and is superposed with a reference signal value Ugd to obtain a reference signal superposed value Ugdj, so that the output voltage of the vehicle-mounted generator is controlled to be stable;
step 2.5, PID adjustment and pulse width modulation circuit design:
detecting a voltage sampling value Ugf of an output loop of the vehicle-mounted generator in real time by adopting a PWM controller, comparing the voltage sampling value with the reference signal superposition value Ugdj to obtain a difference value, outputting two PWM waveforms with adjustable duty ratios according to the difference value, and using the two PWM waveforms with adjustable duty ratios as control signals of the MOS switching tube; the MOS switch tube is connected with the excitation winding of the vehicle-mounted generator in series, and the excitation current of the excitation winding of the vehicle-mounted generator is controlled by controlling the on-off of the MOS switch tube, so that the output voltage of the vehicle-mounted generator is adjusted, and closed loop control is formed;
step 2.6, designing a current limiting circuit:
a first voltage comparator composed of an integrated operational amplifier is adopted, and the output end of the first voltage comparator acts on the voltage given circuit through a diode; the output current sampling circuit obtains a current sampling value Ui which is compared with a set current limiting threshold value, when the value of the current sampling value Ui is smaller than the set current limiting threshold value, a first voltage comparator outputs a high level, and the diode is cut off reversely; when the value of the current sampling value Ui is larger than the set current threshold value, the first voltage comparator outputs a low level, the diode is conducted in the forward direction, the voltage reference value Ugd is pulled down, and the output voltage of the vehicle-mounted generator is reduced; when the load continues to increase, the vehicle-mounted generator enters a constant current mode, namely, the output current is kept unchanged when the output voltage is continuously reduced.
2. The design method of the high-voltage direct-current self-generating mobile power station of claim 1 is characterized in that: the voltage regulation controller design also comprises a voltage, current and rotating speed protection circuit design:
and a second voltage comparator consisting of an integrated operational amplifier is adopted, the voltage value, the current value and the rotating speed value which are sampled in real time are compared with a set protection threshold value, and when the voltage value, the current value and the rotating speed value exceed the protection threshold value, the vehicle-mounted generator stops working.
3. The design method of the high-voltage direct-current self-generating mobile power station according to claim 1 or 2 is characterized in that: the transmission ratio of a power output shaft and a power input shaft of the speed-increasing gear box is 2: 1, and the output loop of the vehicle-mounted generator outputs DC500V direct current through the three-phase rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645647.4A CN115085606A (en) | 2022-06-09 | 2022-06-09 | Design method of high-voltage direct-current self-generating mobile power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645647.4A CN115085606A (en) | 2022-06-09 | 2022-06-09 | Design method of high-voltage direct-current self-generating mobile power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115085606A true CN115085606A (en) | 2022-09-20 |
Family
ID=83251264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210645647.4A Pending CN115085606A (en) | 2022-06-09 | 2022-06-09 | Design method of high-voltage direct-current self-generating mobile power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115085606A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788486A (en) * | 1986-02-14 | 1988-11-29 | Hitachi, Ltd. | Vehicular power supply system having a plurality of power supply voltages |
| CN2194564Y (en) * | 1994-06-25 | 1995-04-12 | 福建省仙游电机厂 | Automobile brushless generator with double-voltage output |
| CN2344911Y (en) * | 1998-06-26 | 1999-10-20 | 重庆运达焊接设备有限公司 | DC arc-welding generator |
| CN101527469A (en) * | 2009-04-22 | 2009-09-09 | 湖南大学 | Automobile Lundell motor AC-generator |
-
2022
- 2022-06-09 CN CN202210645647.4A patent/CN115085606A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788486A (en) * | 1986-02-14 | 1988-11-29 | Hitachi, Ltd. | Vehicular power supply system having a plurality of power supply voltages |
| CN2194564Y (en) * | 1994-06-25 | 1995-04-12 | 福建省仙游电机厂 | Automobile brushless generator with double-voltage output |
| CN2344911Y (en) * | 1998-06-26 | 1999-10-20 | 重庆运达焊接设备有限公司 | DC arc-welding generator |
| CN101527469A (en) * | 2009-04-22 | 2009-09-09 | 湖南大学 | Automobile Lundell motor AC-generator |
Non-Patent Citations (1)
| Title |
|---|
| 付英杰等: ""一种车载全转速范围20kW直流取力发电系统设计"" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102386829B (en) | Starting power generation system for electric automobile | |
| CN101582672B (en) | Controller of permanent magnet generator | |
| US7923866B2 (en) | Power supply system and vehicle including the same, and method of controlling the same | |
| US10093196B2 (en) | Electric storage device, equipment, and control method | |
| US7872362B2 (en) | Vehicle-use power supply control apparatus | |
| CN108604862B (en) | Power supply device, apparatus, and control method | |
| US6262896B1 (en) | Auxiliary power conversion for an electric vehicle using high frequency injection into a PWM inverter | |
| EP3434508A1 (en) | Electric system architecture for range extended electric vehicles | |
| US9013168B2 (en) | System for transferring energy from an energy source and method of making same | |
| CN110061678B (en) | Electro-magnetic doubly salient motor driving and charging integrated system | |
| CN101841185A (en) | Starter during the high-voltage battery fault condition-alternating current generator control | |
| CN105228851A (en) | Power supply on vehicle system | |
| CN108604863B (en) | Power supply device, apparatus, and control method | |
| KR100436692B1 (en) | Electric Power Supply System For a Vehicle | |
| JP2017153243A (en) | Power supply device, equipment, and control method | |
| JP6738616B2 (en) | Power supply device, equipment and control method | |
| CN108702090B (en) | Power supply device, apparatus, and control method | |
| US9917544B2 (en) | Method and power converter unit for operating a generator | |
| CN115085606A (en) | Design method of high-voltage direct-current self-generating mobile power station | |
| WO2014157719A1 (en) | High-efficiency output stabilization power generation device and small water-flow type hydraulic power generation system | |
| US6713889B2 (en) | Motor-generator system for a motor vehicle with hybrid traction drive | |
| JP2004242397A (en) | Power facility for emergency motor of power generation plant | |
| JP5600788B1 (en) | High-efficiency output-stabilized power generator and flowing water type small hydropower system | |
| JP6634311B2 (en) | Power supply device, device and control method | |
| CN111313522A (en) | System for realizing rapid charging of electric automobile by using high-power flywheel for energy storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220920 |
|
| WD01 | Invention patent application deemed withdrawn after publication |