FI129822B - Inverter for electric generator and inverter generator - Google Patents

Inverter for electric generator and inverter generator Download PDF

Info

Publication number
FI129822B
FI129822B FI20195161A FI20195161A FI129822B FI 129822 B FI129822 B FI 129822B FI 20195161 A FI20195161 A FI 20195161A FI 20195161 A FI20195161 A FI 20195161A FI 129822 B FI129822 B FI 129822B
Authority
FI
Finland
Prior art keywords
full
circuit
phase
output
control unit
Prior art date
Application number
FI20195161A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20195161A1 (en
Inventor
Zhijun Gong
Original Assignee
Chongqing Rato Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Rato Tech Co Ltd filed Critical Chongqing Rato Tech Co Ltd
Publication of FI20195161A1 publication Critical patent/FI20195161A1/en
Application granted granted Critical
Publication of FI129822B publication Critical patent/FI129822B/en

Links

Classifications

    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/042—Rotating electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • 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
    • H02K7/1823—Rotary generators structurally associated with turbines or similar 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
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02P9/06—Control effected upon clutch or other mechanical power transmission means and dependent upon electric output value of the generator
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • 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
    • H02P9/02—Details of the control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)

Abstract

The present application relates to an inverter (1) for an electric generator (2) and an inversion electric generator, which pertain to the field of inversion electric generators. In the inverter (1) for an electric generator (2) and in the inversion electric generator applying the inverter (1) for an electric generator (2) provided by the present application, the switching of a state switch (104) is directly associated with the switching actions controlling a quadruple relay (106), each control unit (105, 110, 114) operates independently, a fixed operation mode is formed without forming mutual interference, and the switching of the output between a single-phase full power output (103) and a three-phase full power output (115) is realized. The present application avoids complex system control and facilitates communication with the control units, so that the reliability of the product is improved.

Description

INVERTER FOR ELECTRIC GENERATOR AND INVERTER GENERATOR TECHNICAL FIELD
[0001] The present application pertains to the field of inverter generators, and in particular to an inverter for an electric generator and an inverter generator.
BACKGROUND
[0002] When the electric generator of a relatively large output power is used, some loads are three-phase, and some loads are single-phase. For the traditional three-phase electric generator, the single-phase output power is only slightly higher than one third of the three-phase output total power, and the rated output power cannot be achieved. The following known patent documents provide a solution to the problem:
[0003] Patent Document 1: JP No. 2010-206904, and
[0004] Patent Document 2: 201210154043 6 (Patent Application No.).
[0005] In an inverter generator recorded in Patent Document 1, an inverter control circuit is described, and the three-phase alternating current or single-phase alternating current is selectively output by making three groups of single-phase inversion circuits of the inverter generator to operate.
[0006] In an inverter generator recorded in Patent Document 2, a phase synchronization operation mode and an output switching method about the three groups of single-phase inversion circuits in Patent Document 1 are further improved. N [0007] In the inverter generators provided in the above documents, the output of the N 25 inverter needs single-phase/three-phase switching by a control circuit and a switch. When 5 being switched to the single-phase, the three groups of inverters perform parallel output. X When being switched to the three-phase, the three groups of inverters perform phase E distribution output by data communication. The solutions recorded in the above two 5 documents have the following shortcomings: no matter if single-phase parallel output or io 30 three-phase output is adopted, the mutual communication and cooperation between various < functional modules are required to achieve precise phase synchronization operation, to avoid the power consumption between the inverters caused by bad synchronization. In this way, each inverter needs to be switched between the single-phase operation mode and the 1 three-phase operation mode. As a result, the system design is complicated, and the reliability is thus reduced. Meanwhile, there are too many control circuits for the whole inverter generator in the above document solutions, which leads to the increase of the design difficulty of the whole machine.
SUMMARY
[0008] In order to overcome the problems in the prior art to some extent, the present application provides an inverter for an electric generator and an inverter generator.
[0009] In order to realize the above objects, the present application adopts the — following technical solution.
[0010] An inverter for an electric generator comprises: a first rectifying and voltage stabilizing circuit, configured to receive an input of a first electric generator winding; a first DC/AC full-bridge converting circuit, electrically connected to the first rectifying and voltage stabilizing circuit, a single-phase output terminal, electrically connected to a voltage — output end of the first DC/AC full-bridge converting circuit; a state switch, configured for switching operation of single-phase and three-phase electrical outputs; a first control unit, electrically connected to the state switch, the first rectifying and voltage stabilizing circuit, and the first DC/AC full-bridge converting circuit respectively; a quadruple relay, having a control terminal, four first operating contacts Al, A2, A3 and A4, and four second operating — contacts B1, B2, B3 and B4; wherein when the quadruple relay is in a first operating state, the four first operating contacts are closed, and the four second operating contacts are disconnected; when the quadruple relay is in a second operating state, the four first operating contacts are disconnected, and the four second operating contacts are closed; and the control terminal of the quadruple relay is electrically connected to the first control unit; N 25 a second rectifying and voltage stabilizing circuit, configured to receive an input of a . second electric generator winding: a second DC/AC full-bridge converting circuit, in = addition with the first DC/AC full-bridge converting circuit; wherein two output terminals N of the second rectifying and voltage stabilizing circuit are electrically connected to two E input terminals of the second DC/AC full-bridge converting circuit by the first operating o 30 contacts Al and A2 of the quadruple relay, or the two output terminals of the second 2 rectifying and voltage stabilizing circuit are electrically connected to two input terminals of the first DC/AC full-bridge converting circuit by the second operating contacts B1 and B2 of the quadruple relay; a first phase detecting circuit, electrically connected to the circuit between the first DC/AC full-bridge converting circuit and the single-phase output terminal; 2 a second control unit, electrically connected to the first phase detecting circuit, the second rectifying and voltage stabilizing circuit, and the second DC/AC full-bridge converting circuit respectively; a third rectifying and voltage stabilizing circuit, configured to receive an input of a third electric generator winding; a third DC/AC full-bridge converting circuit, in addition with the first DC/AC full-bridge converting circuit; wherein two output terminals of the third rectifying and voltage stabilizing circuit are electrically connected to two input terminals of the third DC/AC full-bridge converting circuit by the first operating contacts A3 and A4 of the quadruple relay, or the two output terminals of the third rectifying and voltage stabilizing circuit are electrically connected to two input terminals of — the first DC/AC full-bridge converting circuit by the second operating contacts B3 and B4 of the quadruple relay; a second phase detecting circuit, electrically connected to the circuit between the first DC/AC full-bridge converting circuit and the single-phase output terminal; a third control unit, electrically connected to the second phase detecting circuit, the third rectifying and voltage stabilizing circuit, and the third DC/AC full-bridge converting circuit respectively; and a three-phase output terminal, wherein neutral output ends of the first DC/AC full-bridge converting circuit, the second DC/AC full-bridge converting circuit, and the third DC/AC full-bridge converting circuit are connected with one another to form a three-phase neutral point; and phase line output ends of the first DC/AC full-bridge converting circuit, the second DC/AC full-bridge converting circuit, and the third DC/AC full-bridge converting circuit are electrically connected to three phase line output terminals of the three-phase output terminal in one-to-one correspondence respectively, and the first control unit controls the quadruple relay.
[0011] Further, the inverter for an electric generator further comprises: a starting circuit, configured to output a starting voltage to the first electric generator winding; and a N 25 DC boosting circuit, configured to receive an input of a battery voltage; wherein the DC N boosting circuit is electrically connected to the starting circuit; and the DC boosting circuit S and the starting circuit are electrically connected to the first control unit respectively. N [0012] Further, the inverter for an electric generator further comprises: a first filter, j disposed on an output line of the first DC/AC full-bridge converting circuit, the first filter o 30 — being electrically connected to the first control unit; a second filter, disposed on an output 2 line of the second DC/AC full-bridge converting circuit, the second filter being electrically N connected to the second control unit; and a third filter, disposed on an output line of the third DC/AC full-bridge converting circuit, the third filter being electrically connected to the third control unit. 3
[0013] Further, the first control unit detects an operating state of the state switch.
[0014] When the state switch is in a three-phase electrical output state, the first control unit controls the quadruple relay to be in the first operating state, and the first control unit configures an output power of the first DC/AC full-bridge converting circuit to be one third of a rated output power of the electric generator.
[0015] The first phase detecting circuit detects an output of the first DC/AC full-bridge converting circuit. When the first DC/AC full-bridge converting circuit outputs a voltage, the first phase detecting circuit obtains a reference phase and transmits it to the second control unit to trigger the second control unit to detect a DC bus voltage of the — second DC/AC full-bridge converting circuit. When the DC bus voltage is within a set range, the second control unit configures an output power of the second DC/AC full-bridge converting circuit to be one third of the rated output power of the electric generator, and the second control unit configures the phase of an output voltage of the second DC/AC full-bridge converting circuit to be at an angle of 120 degrees with respect to the reference phase.
[0016] The second phase detecting circuit detects an output of the first DC/AC full-bridge converting circuit. When the first DC/AC full-bridge converting circuit outputs a voltage, the second phase detecting circuit obtains a reference phase and transmits to the third control unit to trigger the third control unit to detect a DC bus voltage of the third DC/AC full-bridge converting circuit. When the DC bus voltage is within a set range, the third control unit configures an output power of the third DC/AC full-bridge converting circuit to be one third of the rated output power of the electric generator, and the third control unit configures the phase of an output voltage of the third DC/AC full-bridge converting circuit to be at an angle of 240 degrees with respect to the reference phase. N 25 [0017] Further, the first control unit interacts with the first DC/AC full-bridge N converting circuit to perform output control cycle to control the output voltage and output S power of the first DC/AC full-bridge converting circuit. N [0018] The second control unit interacts with the second DC/AC full-bridge E converting circuit to perform output control cycle to control the output voltage and output o 30 power of the second DC/AC full-bridge converting circuit, and to adjust the phase of the 2 output voltage of the second DC/AC full-bridge converting circuit to cause the phase of the output voltage of the second DC/AC full-bridge converting circuit to be at an angle of 120 degrees with respect to the reference phase.
[0019] The third control unit interacts with the third DC/AC full-bridge converting 4 circuit to perform output control cycle to control the output voltage and output power of the third DC/AC full-bridge converting circuit, and to adjust the phase of the output voltage of the third DC/AC full-bridge converting circuit is adjusted to cause the phase of the output voltage of the third DC/AC full-bridge converting circuit to be at an angle of 240 degrees with respect to the reference phase.
[0020] Further, the first control unit detects an operating state of the state switch.
[0021] When the state switch is in a single-phase electrical output state, the first control unit controls the quadruple relay to be in a second operating state, and the first control unit configures an output power of the first DC/AC full-bridge converting circuit to be a rated output power of the electric generator.
[0022] The first phase detecting circuit detects an output of the first DC/AC full-bridge converting circuit. When the first DC/AC full-bridge converting circuit outputs a voltage, the first phase detecting circuit obtains a reference phase and transmits it to the second control unit, to trigger the second control unit to detect a DC bus voltage of the second DC/AC full-bridge converting circuit. When the DC bus voltage is zero, the second control unit performs no output control.
[0023] When the first DC/AC full-bridge converting circuit outputs a voltage, the second phase detecting circuit obtains a reference phase and transmits it to the third control unit, to trigger the third control unit to detect a DC bus voltage of the third DC/AC full-bridge converting circuit. When the DC bus voltage is zero, the third control unit performs no output control.
[0024] An inverter generator comprises an electric generator provided with a first electric generator winding, a second electric generator winding, and a third electric generator winding. N 25 — [0025] The inverter generator further comprises the above inverter for an electric N generator.
N P [0026] The first electric generator winding is electrically connected to the first N rectifying and voltage stabilizing circuit of the inverter for an electric generator. The second E electric generator winding is electrically connected to the second rectifying and voltage o 30 stabilizing circuit of the inverter for an electric generator. The third electric generator 2 winding is electrically connected to the third rectifying and voltage stabilizing circuit of the inverter for an electric generator.
[0027] Further, the inverter generator further comprises: an engine, the engine and the electric generator being coaxially disposed. 5
[0028] Further, the inverter generator further comprises: a battery.
[0029] The inverter for an electric generator further comprises: a starting circuit and a DC boosting circuit.
[0030] The battery is electrically connected to the DC boosting circuit.
[0031] The DC boosting circuit is electrically connected to the starting circuit.
[0032] The starting circuit is electrically connected to the first electric generator winding.
[0033] The DC boosting circuit and the starting circuit are electrically connected to the first control unit respectively. — [0034] Further, the inverter generator further comprises an output panel, the state switch being disposed on the output panel.
[0035] The output panel is further provided with a three-phase socket and a single-phase socket. The single-phase output terminal is electrically connected to the single-phase socket, and the three-phase output terminal is electrically connected to the three-phase socket.
[0036] The present application adopts the above technical solution, and has at least the following beneficial effects.
[0037] According to the inverter for an electric generator and the inverter generator applying the inverter for an electric generator provided by the present application, the switching of the state switch is directly associated with the switching actions controlling a quadruple relay, each control unit operates independently, a fixed operation mode is formed without forming mutual interference, and the switching of the output between the single-phase full power output and the three-phase full power output is realized. The present application avoids complex system control and facilitates communication with the control N 25 — unit, so that the reliability of the product is improved. N [0038] It should be understood that the above general description and the detail S description in the following are merely exemplary and explanative without limiting the N present application. i © 30 BRIEF DESCRIPTION OF THE DRAWINGS 2 [0039] In order to clarify the technical solutions of the embodiments of the present application or the prior art, the accompanying drawings required in the description of the embodiments or the prior art will be introduced briefly. It is obvious that the described accompanying drawings are just some embodiments of the present application. Those ordinary 6 skilled in the art can obtain all other accompanying drawings, without any inventive work, according to these accompanying drawings.
[0040] FIG. 1 is a working principle diagram of an embodiment of an inverter for an electric generator of the present application during three-phase electrical output.
[0041] FIG. 2 isa working principle diagram of an embodiment of an inverter for an electric generator of the present application during single-phase electrical output.
[0042] FIG. 3 is a working principle diagram of another embodiment of an inverter for an electric generator of the present application during single-phase electrical output.
[0043] FIG. 4 is a working principle diagram of an inverter generator to which the inverter for an electric generator of the present application is applied.
[0044] FIG. 5 is a working flow embodiment of a first control unit of the present application.
[0045] FIG. 6 is a working flow embodiment of a second control unit and a third control unit of the present application.
— [0046] In the figures, the following reference numerals represent the following members: 1-inverter for an electric generator; 2-electric generator; 3-engine; 4-battery; 5-output panel; 101-first rectifying and voltage stabilizing circuit; 102-first DC/AC full-bridge converting circuit; 103-single-phase output terminal; 104-state switch; 105-first control unit; 106-guadrauple relay; 107-second rectifying and voltage stabilizing circuit; 108-second DC/AC full-bridge converting circuit; 109-first phase detecting circuit; 110-second control unit; 111-third rectifying and voltage stabilizing circuit; 112-third DC/AC full-bridge converting circuit; 113-second phase detecting circuit; 114-third control unit; 115-three-phase output terminal; 116-starting circuit; 117-DC boosting circuit; 118-first filter; 119-second filter; 120-third filter; 201-first electric generator winding; N 25 202-second electric generator winding; 203-third electric generator winding; a 501-three-phase socket; 502-single-phase socket. <Q
N DETAILED DESCRIPTION E [0047] In order to clarify the objects, technical solutions and advantages of the present o 30 application, the technical solutions of the present application will be described in detail. It is 2 obvious that the described embodiments are just a part but not all of the embodiments of the present application. Based on the embodiments in the present application, those ordinary skilled in the art can obtain all other embodiments, without any inventive work, which should be within the scope of the present application. 2
[0048] The embodiments of the present application provide an inverter for an electric generator and an inverter generator. The present application is illustrated in detail in conjunction with the accompanying drawings below.
[0049] As shown in FIG. 1 and FIG. 2, in one embodiment of the present application, the present application provides an inverter for an electric generator 1, comprising: a first rectifying and voltage stabilizing circuit 101, configured to receive an input of a first electric generator winding 201; a first DC/AC full-bridge converting circuit 102, electrically connected to the first rectifying and voltage stabilizing circuit 101, a single-phase output terminal 103, electrically connected to a voltage output end of the first DC/AC full-bridge converting circuit 102; a state switch 104, configured for switching operation of single-phase and three-phase electrical outputs; a first control unit 105, electrically connected to the state switch 104, the first rectifying and voltage stabilizing circuit 101, and the first DC/AC full-bridge converting circuit 102 respectively; a guadruple relay 106, having a control terminal, four first operating contacts A1, A2, A3 and A4, and four second operating contacts B1, B2, B3 and B4; wherein when the quadruple relay 106 is in a first operating state, the four first operating contacts are closed, and the four second operating contacts are disconnected; when the guadruple relay 106 is in a second operating state, the four first operating contacts are disconnected, and the four second operating contacts are closed; the control terminal of the guadruple relay 106 is electrically connected to the first control unit 105; a second rectifying and voltage stabilizing circuit 107, configured to receive an input of a second electric generator winding 202; a second DC/AC full-bridge converting circuit 108; wherein two output terminals of the second rectifying and voltage stabilizing circuit 107 are electrically connected to two input terminals of the second DC/AC full-bridge converting circuit 108 by the first operating contacts Al and A2 of the N 25 — guadruple relay 106, and the two output terminals of the second rectifying and voltage N stabilizing circuit 107 are electrically connected to two input terminals of the first DC/AC S full-bridge converting circuit 102 by the second operating contacts Bl and B2 of the N guadruple relay 106; a first phase detecting circuit 109, electrically connected to the circuit E between the first DC/AC full-bridge converting circuit 102 and the single-phase output o 30 terminal 103; a second control unit 110, electrically connected to the first phase detecting 2 circuit 109, the second rectifying and voltage stabilizing circuit 107, and the second DC/AC full-bridge converting circuit 108 respectively; a third rectifying and voltage stabilizing circuit 111, configured to receive an input of a third electric generator winding 203; a third DC/AC full-bridge converting circuit 112; wherein two output terminals of the third 8 rectifying and voltage stabilizing circuit 111 are electrically connected to two input terminals of the third DC/AC full-bridge converting circuit 112 by the first operating contacts A3 and A4 of the quadruple relay 106, and the two output terminals of the third rectifying and voltage stabilizing circuit 111 are electrically connected to two input terminals of the first DC/AC full-bridge converting circuit 102 by the second operating contacts B3 and B4 of the quadruple relay 106; a second phase detecting circuit 113, electrically connected to the circuit between the first DC/AC full-bridge converting circuit 102 and the single-phase output terminal 103; a third control unit 114, electrically connected to the second phase detecting circuit 113, the third rectifying and voltage stabilizing circuit 111, and the third DC/AC full-bridge converting circuit 112 respectively; and a three-phase output terminal 115, wherein neutral output ends of the first DC/AC full-bridge converting circuit 102, the second DC/AC full-bridge converting circuit 108, and the third DC/AC full-bridge converting circuit 112 are connected with one another to form a three-phase neutral point; and phase line output ends of the first DC/AC full-bridge converting circuit 102, the second DC/AC full-bridge converting circuit 108, and the third DC/AC full-bridge converting circuit 112 are electrically connected to three phase line output terminals of the three-phase output terminal 115 in one-to-one correspondence respectively.
[0050] Specific implementing explanation is given to the working manner of the — solution of the inverter for an electric generator 1 in conjunction with FIG. 1 and FIG. 2.
[0051] In an example of implementing application, the state switch 104 is configured for the switching operation of single-phase and three-phase electrical outputs. For example, when an on/off switch is selected as the state switch 104, the state thereof is turned on or off. By user operation, a state signal of the single-phase electrical output or three-phase N 25 electrical output is fed back to the first control unit 105.
N [0052] The first control unit 105 detects an operating state of the state switch 104.
S [0053] When the state switch 104 is in a three-phase electrical output state, as shown N in FIG. 1, FIG. 5 and FIG. 6, the first control unit 105 controls the guadruple relay 106 to be E in the first operating state, and the first control unit 105 configures an output power of the o 30 first DC/AC full-bridge converting circuit 102 to be one third of a rated output power of the 2 electric generator.
[0054] The first phase detecting circuit 109 detects an output of the first DC/AC full-bridge converting circuit 102. When the first DC/AC full-bridge converting circuit 102 outputs a voltage, the first phase detecting circuit 109 obtains a reference phase and 9 transmits it to the second control unit 110 to trigger the second control unit 110 to detect a DC bus voltage of the second DC/AC full-bridge converting circuit 108. When the DC bus voltage is within a set range, the second control unit 110 configures an output power of the second DC/AC full-bridge converting circuit 108 to be one third of the rated output power of the electric generator, and the second control unit 110 configures the phase of an output voltage of the second DC/AC full-bridge converting circuit to be at an angle of 120 degrees with respect to the reference phase.
[0055] The second phase detecting circuit 113 detects an output of the first DC/AC full-bridge converting circuit 102. When the first DC/AC full-bridge converting circuit 102 outputs a voltage, the second phase detecting circuit 113 obtains a reference phase and transmits it to the third control unit 114 to trigger the third control unit 114 to detect a DC bus voltage of the third DC/AC full-bridge converting circuit 112. When the DC bus voltage is within a set range, the third control unit 114 configures an output power of the third DC/AC full-bridge converting circuit 112 to be one third of the rated output power of the electric generator, and the third control unit 114 configures the phase of an output voltage of the third DC/AC full-bridge converting circuit 112 to be at an angle of 240 degrees with respect to the reference phase.
[0056] By the illustration of the above implementing application example, the three-phase alternating current of which the three phases differ from one another by 120 — degrees is formed.
[0057] The first control unit 105 detects an operating state of the state switch 104.
[0058] When the state switch 104 is in a single-phase electrical output state, as shown in FIG. 2, FIG. 5 and FIG. 6, the first control unit 105 controls the guadruple relay 106 to be in a second operating state, and the first control unit 105 configures an output N 25 power of the first DC/AC full-bridge converting circuit 102 to be a rated output power of N the electric generator. S [0059] The first phase detecting circuit 109 detects an output of the first DC/AC N full-bridge converting circuit 102. E [0060] When the first DC/AC full-bridge converting circuit 102 outputs a voltage, o 30 the first phase detecting circuit 109 obtains a reference phase and transmits it to the second 2 control unit 110, to trigger the second control unit 110 to detect a DC bus voltage of the second DC/AC full-bridge converting circuit 108. When the DC bus voltage is zero, the second control unit 110 performs no output control.
[0061] When the first DC/AC full-bridge converting circuit 108 outputs a voltage, 10 the second phase detecting circuit 113 obtains a reference phase and transmits it to the third control unit 114, to trigger the third control unit 114 to detect a DC bus voltage of the third DC/AC full-bridge converting circuit 112. When the DC bus voltage is zero, the third control unit 114 performs no output control.
[0062] By the above illustration of the implementing application example, the outputs of the first rectifying and voltage stabilizing circuit 101, the second rectifying and voltage stabilizing circuit 107 and the third rectifying and voltage stabilizing circuit 111 are converged together. The single-phase current is output by the first DC/AC full-bridge converting circuit 102.
[0063] By the illustration of the implementing application examples of the above solution, according to the inverter for an electric generator 1 of the present application, the switching of the state switch 104 is directly associated with the switching actions controlling the quadruple relay 106. Each control unit operates independently. A fixed operation mode is formed without forming mutual interference, and the switching of the output between the single-phase full power output and the three-phase full power output is realized. The reliability of the product is improved. The design difficulty of the inverter generator is greatly reduced while the cost is reduced. Therefore, the following shortcomings of the solutions recorded in the two documents mentioned in the background of the present application can be overcome: the mutual communication and cooperation between respective functional modules are required to achieve precise phase synchronization operation, to avoid the power consumption between the inverters caused by bad synchronization. Each inverter needs to be switched between the single-phase operation mode and three-phase operation mode. As a result, the system design is complicated, and the reduction of reliability may be thus caused. Meanwhile, the control circuits for the entire N 25 inverter generator in the above document solutions are more, which also leads to the N increase of design difficulty of the whole machine. S [0064] In the present application, respective functional circuits and functional units N may be acguired from related technologies. For example, the first control unit 105, the E second control unit 110 and the third control unit 114 may adopt a o 30 Single-Chip Microcomputer, a Field Programmable Gate Array (FPGA) a PGA 2 (Programmable Gate Array), etc. The quadruple relay 106 may be that the four first operating contacts are normally closed contacts, and correspondingly, the four second operating contacts are normally open contacts, or the four first operating contacts are normally open contacts, and correspondingly, the four second operating contacts are 11 normally closed contacts.
[0065] As shown in FIG. 3, in one embodiment of the present application, the inverter for an electric generator 1 further comprises: a starting circuit 116, configured to output a starting voltage to the first electric generator winding 201; and a DC boosting circuit 117, configured to receive the input of a battery voltage.
[0066] The DC boosting circuit 117 is electrically connected to the starting circuit
116.
[0067] The DC boosting circuit 117 and the starting circuit 116 are electrically connected to the first control unit 105 respectively.
[0068] In the related art that the engine drives the electric generator to generate power, the starting of the engine includes electric starting and manual starting. The above solution of the present application can be applied to the engine of electric starting. By the starting circuit 116 through external DC voltage assisting, the first electric generator winding 201 can be energized to generate an electromagnetic torque to drive the rotor of a permanent magnet electric generator to rotate. Since the engine and the electric generator are coaxially disposed, the engine obtains an initial speed and then starts to enter the operating state.
[0069] As shown in FIG. 1, FIG. 2, and FIG. 3, in one embodiment of the present application, the inverter for an electric generator 1 further comprises: a first filter 118, disposed on an output line of the first DC/AC full-bridge converting circuit 102, the first filter 118 being electrically connected to the first control unit 102; a second filter 119, disposed on an output line of the second DC/AC full-bridge converting circuit 108, the second filter 119 being electrically connected to the second control unit 108; and a third filter 120, disposed on an output line of the third DC/AC full-bridge converting circuit 112, a 25 — the third filter 120 being electrically connected to the third control unit 112. N [0070] By the above solution, each DC/AC full-bridge converting circuit is S correspondingly provided with a filter respectively, thereby performing harmonic wave N filtering on the alternating current output from each DC/AC full-bridge converting circuit, E to eliminate the poor influence on the output alternating current. o 30 [0071] As shown in FIG. 5 and FIG. 6, in one embodiment of the present application, 2 under the condition that the present application is applied to the three-phase electrical output, the first control unit 105 interacts with the first DC/AC full-bridge converting circuit 102 to perform output control cycle to control the output voltage and output power of the first DC/AC full-bridge converting circuit 102. 12
[0072] The second control unit 110 interacts with the second DC/AC full-bridge converting circuit 108 to perform output control cycle to control the output voltage and output power of the second DC/AC full-bridge converting circuit 108, and to adjust the phase of the output voltage of the second DC/AC full-bridge converting circuit 108 to cause the phase of the output voltage of the second DC/AC full-bridge converting circuit 108 to be at an angle of 120 degrees with respect to the reference phase.
[0073] The third control unit 114 interacts with the third DC/AC full-bridge converting circuit 112 to perform output control cycle to control the output voltage and output power of the third DC/AC full-bridge converting circuit 112, and to adjust the phase — of the output voltage of the third DC/AC full-bridge converting circuit 112 to cause the phase of the output voltage of the third DC/AC full-bridge converting circuit 112 to be at an angle of 240 degrees with respect to the reference phase.
[0074] By the above solution, by the interaction between each control unit and the corresponding DC/AC full-bridge converting circuit, the output control cycle is performed, thereby ensuring the stability of the single-phase electrical output or three-phase electrical output.
[0075] As shown in FIG. 4, the present application gives an embodiment of the inverter generator. Referring to FIG. 4, the inverter generator comprises an electric generator 2. The electric generator has a first electric generator winding 201, a second electric generator winding 202 and a third electric generator winding 203.
[0076] The inverter generator further comprises the inverter for an electric generator 1 as shown in FIG. 1.
[0077] The first electric generator winding 201 is electrically connected to the first rectifying and voltage stabilizing circuit 101 of the inverter for an electric generator 1. The N 25 — second electric generator winding 202 is electrically connected to the second rectifying and N voltage stabilizing circuit 107 of the inverter for an electric generator 1. The third electric S generator winding 203 is electrically connected to the third rectifying and voltage N stabilizing circuit 111 of the inverter for an electric generator 1. E [0078] Regarding the device in the above embodiment, the specific manner of o 30 operation executed by each unit has been described in detail in the above related 2 embodiments, and will not be illustrated in detail herein.
[0079] In the specific application of the present application, the electric generator 2 may adopt a permanent magnetic electric generator.
[0080] As shown in FIG. 4, in one embodiment of the present application, the 13 inverter generator further comprises an engine 3, and the engine 3 and the electric generator 2 are coaxially disposed.
[0081] As shown in FIG. 3 and FIG. 4, in one embodiment of the present application, the inverter generator further comprises a battery 4.
[0082] The inverter for an electric generator 1 further comprises a starting circuit 116 and a DC boosting circuit 117.
[0083] The battery 4 is electrically connected to the DC boosting circuit 117.
[0084] The DC boosting circuit 117 is electrically connected to the starting circuit
116.
[0085] The starting circuit 116 is electrically connected to the first electric generator winding 201.
[0086] The DC boosting circuit 117 and the starting circuit 116 are electrically connected to the first control unit 105 respectively.
[0087] By the solution, it can be known that the electric generator according to the present application may be applied to the engine of electric starting. The respective functional units in the present application may be integrated in one processing module, or respective units physically exist separately or two or more units are integrated in one module. For example, as shown in FIG. 3, the starting circuit 116 and the first rectifying and voltage stabilizing circuit 101 are integrated in one module.
[0088] As shown in FIG. 4, in one embodiment of the present application, the inverter generator further comprises an output panel 5. The state switch 104 is disposed on the output panel 105.
[0089] The output panel 5 is further provided with a three-phase socket 501 and a single-phase socket 502. The single-phase output terminal 103 is electrically connected to N 25 the single-phase socket 502, and the three-phase output terminal 115 is electrically N connected to the three-phase socket 501. S [0090] In specific application, the ON/OFF state of the state switch 104 can N respectively and correspondingly represent two states of single-phase full power output and E three-phase full power output. No selector switches are disposed between the output of the o 30 inverter for an electric generator 1 and the panel. When the state switch 104 on the output 2 panel 5 is in a three-phase output position, the three-phase output of the inverter for an electric generator 1 is effective, and the three-phase output total power is the rated power of the inverter generator. Meanwhile, since the single-phase output terminal 103 and one phase of the three-phase output in the inverter are connected, the single-phase socket 502 may also 14 output a single-phase voltage, but the output power thereof is one third of the rated power of the inverter generator. When the state switch 104 on the output panel 5 is in a single-phase output position, the three-phase output of the inverter for an electric generator 1 is ineffective, and the maximum output power of the single-phase output socket is the rated power of the electric generator.
[0091] It can be understood that the same or similar parts in the above respective embodiments may be referred to each other, and the content not described in detail in some embodiments may refer to the same or similar contents in other embodiments.
[0092] It should be noted that in the description of the present application, the terms — "first", "second" and the like are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality of" means at least two unless otherwise stated.
[0093] Any process or method description in the flowcharts or otherwise described herein may be understood to represent the module, segment or portion of a code that includes one or more executable instructions for implementing the steps of a particular logical function or process. The scope of the preferred embodiments of the present application includes additional implementations, and the functions may be performed in a substantially simultaneous manner or in an opposite order, rather than the order shown or — discussed, according to the involved functions, which should be understood by those skilled in the art to which the embodiments of the present application belong.
[0094] It should be understood that the respective portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods may be implemented in software or firmware N 25 stored in a memory and executed by a suitable instruction execution system. For example, if N implemented in hardware, as in another embodiment, they can be implemented by any one S or combination of the following technologies well known in the art: a discrete logic circuit N having a logic gate circuit for implementing a logic function on data signals, an j application-specific integrated circuit with a suitable combinational logic gate circuit, a o 30 programmable gate array (PGA), a field programmable gate array (FPGA), etc.. 2 [0095] The ordinary skilled in the art can understand that all or part of the steps carried by the method implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, one or a combination of the steps of the method 15 embodiments is included.
[0096] In addition, respective functional units in respective embodiments of the present application may be integrated into one processing module, or each unit may exist physically and separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. If being implemented in the form of software functional modules and sold or used as independent products, the integrated modules may also be stored in a computer readable storage medium.
[0097] The above storage medium may be a read-only memory, a magnetic disk, an — optical disk or the like.
[0098] In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.
[0099] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and should not be understood as limitative to the present application. Those ordinary skilled in the art could perform variations, modifications, substitutions and variants on the above embodiments within the scope of the present application.
N N O N
K <Q
O N
I a a ©
LO O O
N 16

Claims (10)

1. An inverter for an electric generator (1), comprising: a first rectifying and voltage stabilizing circuit (101), configured to receive an input of a — first electric generator winding (201); a first DC/AC full-bridge converting circuit (102), electrically connected to the first rectifying and voltage stabilizing circuit (101); a single-phase output terminal! (103), electrically connected to a voltage output end of the first DC/AC full-bridge converting circuit (102); a state switch (104), configured for switching operation of single-phase and three-phase electrical outputs; a first control unit (105), electrically connected to the state switch (104), the first rectifying and voltage stabilizing circuit (101), and the first DC/AC full-bridge converting circuit (102) respectively; a quadruple relay (106), having a control terminal, four first operating contacts Al, A2, A3 and A4, and four second operating contacts B1, B2, B3 and B4; wherein when the guadruple relay (106) is in a first operating state, the four first operating contacts are closed, and the four second operating contacts are disconnected; when the guadruple relay (106) is in a second operating state, the four first operating — contacts are disconnected, and the four second operating contacts are closed; and the control terminal of the guadruple relay is electrically connected to the first control unit (105); a second rectifying and voltage stabilizing circuit (107), configured to receive an input of a second electric generator winding (202); N 25 a second DC/AC full-bridge converting circuit (108), in addition with the first DC/AC N full-bridge converting circuit (102); wherein S two output terminals of the second rectifying and voltage stabilizing circuit (107) are N electrically connected to two input terminals of the second DC/AC full-bridge converting j circuit (108) by the first operating contacts Al and A2 of the quadruple relay (106), or o 30 the two output terminals of the second rectifying and voltage stabilizing circuit (107) 2 are electrically connected to two input terminals of the first DC/AC full-bridge converting circuit (102) by the second operating contacts B1 and B2 of the quadruple relay; a first phase detecting circuit (109), electrically connected to the circuit between the first DC/AC full-bridge converting circuit (102) and the single-phase output terminal (103); 17 a second control unit (110), electrically connected to the first phase detecting circuit (109), the second rectifying and voltage stabilizing circuit (107), and the second DC/AC full-bridge converting circuit (108) respectively; a third rectifying and voltage stabilizing circuit (111), configured to receive an input of a third electric generator winding (203); a third DC/AC full-bridge converting circuit (112), in addition with the first DC/AC full-bridge converting circuit (102); wherein two output terminals of the third rectifying and voltage stabilizing circuit (111) are electrically connected to two input terminals of the third DC/AC full-bridge converting — circuit (112) by the first operating contacts A3 and A4 of the quadruple relay (106), or the two output terminals of the third rectifying and voltage stabilizing circuit (111) are electrically connected to two input terminals of the first DC/AC full-bridge converting circuit by the second operating contacts B3 and B4 of the quadruple relay; a second phase detecting circuit (113), electrically connected to the circuit between the — first DC/AC full-bridge converting circuit and the single-phase output terminal (103); a third control unit (114), electrically connected to the second phase detecting circuit (113), the third rectifying and voltage stabilizing circuit, and the third DC/AC full-bridge converting circuit respectively; and a three-phase output terminal (115), wherein neutral output ends of the first DC/AC full-bridge converting circuit, the second DC/AC full-bridge converting circuit, and the third DC/AC full-bridge converting circuit are connected with one another to form a three-phase neutral point; and phase line output ends of the first DC/AC full-bridge converting circuit (102), the second DC/AC full-bridge converting circuit (108), and the third DC/AC full-bridge N 25 converting circuit are electrically connected to three phase line output terminals of the N three-phase output terminal in one-to-one correspondence respectively, and . the first control unit (105) controls the guadruple relay (106).
N
T i
2. The inverter for an electric generator according to claim 1, wherein the inverter for an © 30 — electric generator further comprises: 2 a starting circuit (116), configured to output a starting voltage to the first electric generator winding (201); and a DC boosting circuit (117), configured to receive an input of a battery voltage; wherein the DC boosting circuit is electrically connected to the starting circuit (116); and 18 the DC boosting circuit and the starting circuit are electrically connected to the first control unit (105) respectively.
3. The inverter for an electric generator according to claim 1 or 2, wherein the inverter for an electric generator further comprises: a first filter (118), disposed on an output line of the first DC/AC full-bridge converting circuit, the first filter being electrically connected to the first control unit (105); a second filter (119), disposed on an output line of the second DC/AC full-bridge converting circuit, the second filter being electrically connected to the second control unit — (110); and a third filter (120), disposed on an output line of the third DC/AC full-bridge converting circuit, the third filter being electrically connected to the third control unit (114).
4. The inverter for an electric generator according to claim 1 or 2, wherein the first control unit (105) detects an operating state of the state switch; when the state switch is in a three-phase electrical output state, the first control unit controls the guadruple relay (106) to be in the first operating state, and the first control unit configures an output power of the first DC/AC full-bridge converting — circuit to be one third of a rated output power of the electric generator; the first phase detecting circuit (109) detects an output of the first DC/AC full-bridge converting circuit; when the first DC/AC full-bridge converting circuit (102) outputs a voltage, the first phase detecting circuit obtains a reference phase and transmits it to the second control unit (110) to trigger the second control unit to detect a DC bus voltage of the N 25 second DC/AC full-bridge converting circuit; when the DC bus voltage is within a set range, N the second control unit configures an output power of the second DC/AC full-bridge S converting circuit (108) to be one third of the rated output power of the electric generator, N and the second control unit configures the phase of an output voltage of the second DC/AC E full-bridge converting circuit to be at an angle of 120 degrees with respect to the reference o 30 phase; and 2 the second phase detecting circuit (113) detects an output of the first DC/AC full-bridge converting circuit; when the first DC/AC full-bridge converting circuit (102) outputs a voltage, the second phase detecting circuit obtains a reference phase and transmits it to the third control unit to trigger the third control unit (114) to detect a DC bus voltage of the 19 third DC/AC full-bridge converting circuit (112); when the DC bus voltage is within a set range, the third control unit configures an output power of the third DC/AC full-bridge converting circuit to be one third of the rated output power of the electric generator, and the third control unit (114) configures the phase of an output voltage of the third DC/AC full-bridge converting circuit to be at an angle of 240 degrees with respect to the reference phase.
5. The inverter for an electric generator according to claim 4, wherein, the first control unit (105) interacts with the first DC/AC full-bridge converting circuit to — perform output control cycle to control the output voltage and output power of the first DC/AC full-bridge converting circuit; the second control (110) unit interacts with the second DC/AC full-bridge converting circuit to perform output control cycle to control the output voltage and output power of the second DC/AC full-bridge converting circuit, and to adjust the phase of the output voltage of the second DC/AC full-bridge converting circuit to cause the phase of the output voltage of the second DC/AC full-bridge converting circuit to be at an angle of 120 degrees with respect to the reference phase; and the third control unit (114) interacts with the third DC/AC full-bridge converting circuit to perform output control cycle to control the output voltage and output power of the third DC/AC full-bridge converting circuit, and to adjust the phase of the output voltage of the third DC/AC full-bridge converting circuit to cause the phase of the output voltage of the third DC/AC full-bridge converting circuit to be at an angle of 240 degrees with respect to the reference phase. N 25
6. The inverter for an electric generator according to claim 1 or 2, wherein N the first control unit (105) detects an operating state of the state switch (104); S when the state switch is in a single-phase electrical output state, N the first control unit controls the guadruple relay (106) to be in a second operating state, E and o 30 the first control unit configures an output power of the first DC/AC full-bridge converting 2 circuit to be a rated output power of the electric generator; the first phase detecting circuit detects an output of the first DC/AC full-bridge converting circuit, when the first DC/AC full-bridge converting circuit outputs a voltage, the first phase 20 detecting circuit obtains a reference phase and transmits it to the second control unit, to trigger the second control unit to detect a DC bus voltage of the second DC/AC full-bridge converting circuit, and when the DC bus voltage is zero, the second control unit performs no output control; and when the first DC/AC full-bridge converting circuit outputs a voltage, the second phase detecting circuit obtains a reference phase and transmits it to the third control unit, to trigger the third control unit to detect a DC bus voltage of the third DC/AC full-bridge converting circuit, and when the DC bus voltage is zero, the third control unit performs no output control.
7. An inverter generator, comprising an electric generator (2) provided with a first electric generator winding (201), a second electric generator winding (202), and a third electric generator winding (203); wherein the inverter generator further comprises the inverter for an electric generator (1) according to claim 1; the first electric generator winding is electrically connected to the first rectifying and voltage stabilizing circuit (101) of the inverter for an electric generator, the second electric generator winding is electrically connected to the second rectifying and voltage stabilizing circuit (107) of the inverter for an electric generator, and the third electric generator — winding is electrically connected to the third rectifying and voltage stabilizing circuit (111) of the inverter for an electric generator.
8. The inverter generator according to claim 7, wherein the inverter generator further comprises: an engine (3), the engine and the electric generator being coaxially disposed. N 25
O . 9. The inverter generator according to claim 7, wherein the inverter generator further = comprises: a battery (4); N the inverter for an electric generator further comprises: a starting circuit (116) and a DC E boosting circuit (117); © 30 the battery is electrically connected to the DC boosting circuit; 3 the DC boosting circuit is electrically connected to the starting circuit; the starting circuit is electrically connected to the first electric generator winding; and the DC boosting circuit and the starting circuit are electrically connected to the first control unit respectively. 21
10. The inverter generator according to any one of claims 7 to 9, wherein the inverter generator further comprises an output panel (5), wherein the state switch is disposed on the output panel; and the output panel is further provided with a three-phase socket (501) and a single-phase socket (502), the single-phase output terminal is electrically connected to the single-phase socket, and the three-phase output terminal is electrically connected to the three-phase socket.
N
N
O
N
K <Q o
N
I a a ©
LO
O
O
N 22
FI20195161A 2018-03-07 2019-03-06 Inverter for electric generator and inverter generator FI129822B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810187677.9A CN108258954B (en) 2018-03-07 2018-03-07 Generator inverter and inverter generator

Publications (2)

Publication Number Publication Date
FI20195161A1 FI20195161A1 (en) 2019-09-08
FI129822B true FI129822B (en) 2022-09-15

Family

ID=62745969

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20195161A FI129822B (en) 2018-03-07 2019-03-06 Inverter for electric generator and inverter generator

Country Status (6)

Country Link
CN (1) CN108258954B (en)
DE (1) DE102019105551A1 (en)
ES (1) ES2734236B2 (en)
FI (1) FI129822B (en)
FR (1) FR3078847B1 (en)
PE (1) PE20191309A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109713911A (en) * 2019-03-06 2019-05-03 重庆瑜欣平瑞电子股份有限公司 The high-power twin voltage inverter circuit structure of general gasoline generator
KR102603058B1 (en) * 2019-04-22 2023-11-16 현대자동차주식회사 System and method for controlling charging power of ec0-friendly vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6281664B1 (en) * 1999-01-13 2001-08-28 Honda Giken Kogyo Kabushiki Kaisha Generator and generator apparatus
JP2003102199A (en) * 2001-07-19 2003-04-04 Yamaha Motor Co Ltd Inverter system generator
JP5280892B2 (en) * 2009-03-02 2013-09-04 株式会社ダイシン Inverter generator
CN101505129B (en) * 2009-03-06 2011-03-09 西安理工大学 Synthetic regulating apparatus for digital hydro-turbo generator set and control method thereof
RU2515474C2 (en) * 2011-05-17 2014-05-10 Хонда Мотор Ко., Лтд. Inverter generator
JP5745931B2 (en) * 2011-05-17 2015-07-08 本田技研工業株式会社 Inverter generator control device
US9143056B2 (en) * 2011-12-16 2015-09-22 Empower Micro Systems, Inc. Stacked voltage source inverter with separate DC sources
CN106972758A (en) * 2017-05-15 2017-07-21 南京航空航天大学 A kind of single-phase/three-phase combination inversion electric supply installation of Independent Power Generation occasion
CN207994969U (en) * 2018-03-07 2018-10-19 龚治俊 A kind of generator inverter and inverter generator

Also Published As

Publication number Publication date
FI20195161A1 (en) 2019-09-08
PE20191309A1 (en) 2019-09-23
FR3078847A1 (en) 2019-09-13
DE102019105551A1 (en) 2019-09-12
ES2734236B2 (en) 2020-09-24
FR3078847B1 (en) 2021-11-12
CN108258954A (en) 2018-07-06
ES2734236A1 (en) 2019-12-04
CN108258954B (en) 2023-10-17

Similar Documents

Publication Publication Date Title
US6864646B2 (en) Multiple inverter system with low power bus ripples and method therefor
US10479206B2 (en) Method for switching an operating state of an electric machine and device for switching an operating state of an electric machine
CN101272125B (en) Motor drive system with fault tolerance function
FI129822B (en) Inverter for electric generator and inverter generator
JP6201867B2 (en) Inverter control device
BR112016003749B1 (en) ELECTRIC MOTOR CONTROL APPARATUS
Oettmeier et al. Machine emulator: Power-electronics based test equipment for testing high-power drive converters
JP2020503830A (en) Modulation method and apparatus based on three-phase neutral point clamp inverter
CN105529977A (en) Control system and method for three-phase alternating current motor for suppressing zero-sequence current
Ma et al. Open-circuit fault-tolerant control strategy based on five-level power converter for SRM system
CN111654125A (en) Multi-working-mode permanent magnet synchronous motor and control method thereof
CN105915122B (en) Five-phase inverter dual motors system fault tolerant control method based on Direct Torque Control
CN110112960B (en) Control system and method under double-motor multi-power bridge arm fault
Jiang et al. Analysis of highly reliable electric drive system based on dual-winding fault-tolerant permanent magnet motor
CN208299708U (en) Threephase asynchronous machine starting device
CN212114916U (en) Permanent magnet synchronous motor with multiple working modes
Shamsi-Nejad et al. Fault tolerant permanent magnet drives: Operating under open-circuit and short-circuit switch faults
CN116648849A (en) Rotary electric machine control system
CN106899241A (en) A kind of brushless dual-feed motor starts control device and method
JP2017085824A (en) Method and apparatus for controlling power conditioner
Lin et al. A fault-tolerant two-permanent magnet synchronous motor drive with field-oriented control scheme
CN215912054U (en) Drive control system of brushless direct current motor
US20230412097A1 (en) Systems and methods for control of multi-phase machines
US20220123686A1 (en) Electric power conversion apparatus
WO2022172505A1 (en) Electric motor driving device

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 129822

Country of ref document: FI

Kind code of ref document: B