CN102257722A - Inverter generator - Google Patents
Inverter generator Download PDFInfo
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- CN102257722A CN102257722A CN2009801515568A CN200980151556A CN102257722A CN 102257722 A CN102257722 A CN 102257722A CN 2009801515568 A CN2009801515568 A CN 2009801515568A CN 200980151556 A CN200980151556 A CN 200980151556A CN 102257722 A CN102257722 A CN 102257722A
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- inverter
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- inverter part
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- 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
- H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
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- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
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- 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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/45—Special adaptation of control arrangements for generators for motor vehicles, e.g. car alternators
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- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/07—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings
- H02P2207/076—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings wherein both supplies are made via converters: especially doubly-fed induction machines; e.g. for starting
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Inverter Devices (AREA)
Abstract
Each of two inverter units has a control circuit (microcomputer). The intensity of a target waveform signal corresponding to a voltage to be outputted from each of the inverter units is successively determined by considering the effective power and the ineffective power outputted from each of the inverter units. By performing communication between the control circuits, the phases of the two inverter units are matched with each other so as to prevent output shortage of an engine or an AC generator by an abrupt load increase.
Description
Technical field
The present invention relates to a kind of inverter generator, it connects inverter part at engine-driven generator, and the output that is connected to the smoothing filter of this inverter part is connected in series, and promptly carries out so-called single-phase three-wire formula power supply.
Background technology
All the time, connect inverter part, be scheduled to the power supply of alternating voltage with predetermined frequency at engine-driven generator.And, and then the output-parallel of many inverter part connected, offer load.
Under the situation of the inverter part that is connected in parallel like this, for example the output voltage with two inverter part is controlled to be identical.In addition, in this case, if the output frequency of two inverter part produces deviation, the effective power of then sharing between two inverter part produces difference.And, if output voltage produces deviation, the situation that reactance capacity circulates between inverter part then takes place.
On the other hand, in above-mentioned control, for example adopt the structure of utilizing single-chip microcomputer to control, in this case, by with inverter part and the Phase synchronization corresponding sine wave AC voltage of output voltage or target waveform signal, for example between 1 cycle, produce and interrupt for 128 times, corresponding with this interruption, measure and accumulative total from the instant value of the output current of inverter part output and the direct voltage of inverter part input etc., and calculate out above-mentioned effective power and reactance capacity.And corresponding with this interruption, the rotating speed of control output frequency (phase place) or control engine carries out the mutual information exchange of a plurality of inverter part (with reference to patent documentation 1).
The prior art document
Patent documentation 1: TOHKEMY 2005-286540 communique
Under existing situation, as mentioned above, consider the parallel running inverter part and meet the control of this running, but consider that recently output with two inverter part is connected in series, and promptly carries out so-called single-phase three-wire formula power supply.
In this case, for example only be connected with bigger load etc., the load unbalanced problem of inverter part takes place in the inverter part of any one party of two inverter part.And, also a side who is connected to the load of each inverter part is the problem of inductive load the opposing party for condensive load.Corresponding to the character of this load, output voltage-output current characteristic is different each other, however expects output voltage-output current characteristic is made as gently.
And, generally speaking, under the less situation of the load that is connected to supply lines, consider that the rotating speed with engine remains the generation that less state suppresses noise, but for example motor connect as load and situation about starting under, become the form that bigger starting current flows, should follow its startup that the rotating speed of engine is increased, but exist the rotating speed of engine to increase the problem that becomes slow.
Summary of the invention
The objective of the invention is to, even under the situation that connects this inverter part, also can utilize single-chip microcomputer that two inverter part are turned round in desired mode.
And purpose of the present invention especially is, efficiently the output voltage of inverter part is controlled.
The present invention relates to inverter generator, especially the amplitude that can make in control circuit (single-chip microcomputer) sinusoidal voltage corresponding with the target waveform signal itself that generates is corresponding to changing from the variation of the effective power of inverter part and reactance capacity, and the output voltage of control inverter portion.That is, amplitude is changed, satisfy:
Amplitude=(A+k
1P-k
2Q).
And, make phase place between for example two inverter part that are connected in series match phase place in the operation process gradually.
And then, in this inverter generator, under the less situation of power output, in advance reduce the rotating speed of engine and suppress the generation of noise, but under the operating condition of this low noise, under situations such as motor start-up, impel the rotating speed of engine to increase ahead of time.
Simultaneously, under the situation that load current sharply increases, the output of the multipole permanent magnet generator in preventing to use surpasses peak value and reduces.
And,,, reduce allowed temperature range or shorten time that overcurrent condition judges to the time along with the rising of environment temperature though possess overheat preventing unit at the FET that constitutes inverter part.
According to the present invention,
(i) poor at the character of variation, inductive and the capacitive load of the size of load current also can suppress the change of the output voltage of inverter part as far as possible,
(ii) make the difference of phase place of output voltage of two inverter part consistent gradually,
(iii) can increase the rotating speed of engine ahead of time at the increase of the rapid load current under the operating condition of low noise,
(iv) can when sharply increasing, load current prevent that the output of permanent magnet generator from exceeding peak value and reduction,
(temperature protection at the FET that constitutes inverter part is changed corresponding to the variation of environment temperature, thereby under lower environment temperature, provide the load current bigger than existing equipment.
Description of drawings
Fig. 1 represents one embodiment of the invention structure.
The structure that one of the inverter part to shown in Figure 1 of representing Fig. 2 turns round and controls.
Fig. 3 represents the processing structure of control circuit (single-chip microcomputer).
Fig. 4 is illustrated in the execution opportunity of the processing in the control circuit (single-chip microcomputer).
Fig. 5 represents to start the flow chart of Infinite Cyclic.
Fig. 6 represents the contents processing of the state 1 of corresponding execution with Infinite Cyclic to state 4.
Fig. 7 represents the contents processing of Infinite Cyclic.
Fig. 8 represents the contents processing of Infinite Cyclic.
Fig. 9 represents about 1/128 flow chart that interrupt (benchmark timer interruption) corresponding with the value i of Sin-itr.
Figure 10 represents the flow chart about the edge interruption.
Figure 11 represents the flow chart about the 21.71mS interruption.
Figure 12 represents existing output voltage control mode.
Figure 13 represents general output voltage-output current characteristic.
Figure 14 represents output voltage-output current characteristic that the present invention expects.
Figure 15 is the figure that is used to illustrate two Phase synchronizationization that inverter part is mutual.
Figure 16 is the figure that is used to illustrate two Phase synchronizationization that inverter part is mutual.
Figure 17 is used to illustrate the figure that produces the situation of difference in two mutual phase places of inverter part.
Figure 18 represents the existing flow chart that is used for the engine speed indication.
Flow chart when Figure 19 represents to impel engine speed to increase.
Figure 20 is the power output-output current characteristic of expression permanent magnet multipolar generator (PMA) and the figure of output voltage-output current characteristic.
Figure 21 represents to be used for the flow chart of overtemperature protection.
The explanation of Reference numeral
100: inverter unit
200: multipole permanent magnet generator
300: engine
301: control unit of engine (ECU)
500: the inverter control power supply
550: the power mode switch
101: inverter part
102: inverter assembly
103: rectification circuit portion
104: inverter circuit portion (H bridge)
105: electrochemical capacitor portion
106: builtin voltage transducer (DC bus-bar voltage testing circuit)
107: temperature sensor
108: current sensor
109: smothing filtering portion
110: control circuit (single-chip microcomputer)
112: the input oral area
113: the input oral area
114: the output oral area
115: the output oral area
116: the output voltage test section
118: low pass filter
119: low pass filter
120: compare the enlarging section
121: variable instruction unit
122: the dip portion that electric current causes
123:PWM portion
The cut-out of 124:PWM signal/pass through portion
The 125:H bridge driver
150: inverter control power supply
160: the rotate instruction adapter
601: the waveform of output voltage
602: the target waveform signal
605: the error waveform signal
Embodiment
Fig. 1 represents the structure of one embodiment of the invention.
Numbering 100 among the figure is inverter units, the 200th, multipole permanent magnet generator (Parmanent Magnet Alternator-PMA), the 300th, and engine, the 500th, inverter control power supply, 550 shows the unit of operation mode as power mode switch list first finger.
The 101st, inverter part, the 102nd, inverter assembly, the 103rd, rectification circuit portion, the 104th, inverter circuit portion (H bridge), the 105th, electrochemical capacitor portion, 106 is the unit that constitutes DC bus-bar voltage testing circuit described later as the builtin voltage transducer, the 107th, temperature sensor, the 108th, current sensor, the 109th, smothing filtering portion, the 110th, the unit that constitutes by single-chip microcomputer as control circuit, 111 is the unit of the information between transmitting-receiving control circuit 110A and the 110B as order wire, the 150th, and inverter control power supply, 160 represent to indicate the unit of the rotation of engine (or generator) as the rotate instruction adapter.
And, 301 expression control unit of engine (ECU).In addition, illustrated multipole permanent magnet generator 200 is as the magnetic field of permanent magnet, in the illustrated case, though not obvious among the figure, have two groups of power coils, the output of each power coil is provided for corresponding respectively inverter part 101A, 101B.
And the lead-out terminal of the lead-out terminal of the 104A of inverter circuit portion and the 104B of inverter circuit portion is connected in series, and lead-out terminal A, lead-out terminal B and lead-out terminal C constitute the single-phase three-wire formula.Therefore, can be between lead-out terminal A and the lead-out terminal B or between lead-out terminal B and lead-out terminal C, output AC voltage V respectively, and can be between lead-out terminal A and lead-out terminal C output AC voltage 2V.
In addition, 600 expressions of waveform shown in the figure are from the PWM waveform as the efferent waveform of each 104A of inverter circuit portion, 104B, and the smoothed filtering of waveform 601 expression said PWM waveforms 600 portion 109 is level and smooth and become the waveform of sinusoidal wave situation.
As shown in Figure 1, obtain output from multipolar generator 200 with two groups of power coils, respectively by inverter part 101A and 101B obtain to exchange export after, with as shown in the figure the structure that connects into the single-phase three-wire formula as object of the present invention.
The structure that one of the inverter part to shown in Figure 1 of representing Fig. 2 turns round and controls.In addition, in Fig. 2, omitted the part of order wire shown in Figure 1 111.
Mark 101,103,104,105,106,108,109,110,200,600,601 among the figure is corresponding with Fig. 1.
Mark 112 is that reception is the input oral area of digital signal from the output current detection signal of current sensor 108 and with analog signal conversion.The 113rd, receive from being the input oral area of digital signal as the d. c. voltage signal (DC bus-bar voltage signal) of the DC bus-bar voltage testing circuit 106 of builtin voltage transducer and with analog signal conversion.
Control circuit 110 (single-chip microcomputer) generates about should be from the target waveform signal 602 of the alternating voltage of inverter circuit portion (H bridge) 104 outputs, and the above-mentioned target waveform signal 602 of output oral area 114 outputs from carrying out digital-to-analogue conversion.
And, control circuit 110 is based on from overcurrent condition of inverter circuit portion (H bridge) 104 etc., stop the control signal (illustrated H bridge stop, CRANK PULSES) of inverter circuit portion (H bridge) 104 grades from the output of output oral area 115, and control the cut-out of pwm signal described later/by control part 124.And then, control circuit 110 will be used for indicating to illustrated variable instruction unit 121 according to the control signal of controlling based on the operating condition of inverter circuit portion (H bridge) 104 (operating condition that the voltage waveform 600 (or 601) of outlet side is temporarily reduced etc.), and control illustrated " dip portion that electric current causes " 122, and control illustrated pwm signal from PWM portion 123.In addition, illustrated 107 expression reversal amplifiers.
Illustrated " based on the output voltage test section of reversal amplifier " 116 extracts illustrated waveform 600.This waveform 600 becomes sinusoidal waveform 603 (basic identical with waveform 601) via low pass filter (LPF) 118.On the other hand, illustrated target waveform signal 602 also becomes sinusoidal waveform 604 via low pass filter 119.Both sinusoidal waveforms 604 and 603 compare by comparing enlarging section 120, and error waveform signal 605 is directed to above-mentioned " dip portion that electric current causes " 122.
" dip portion that electric current causes " 122 has the wave height limitation function that culminates of waveform of the above-mentioned error waveform signal 605 of restriction and sends signal to illustrated PWM portion 123.Much less, as mentioned above, " dip portion that electric current causes " 122 makes controls such as the output voltage of inverter temporarily reduces with satisfied operating condition based on inverter circuit portion (H bridge) 104, and adjusts the amplitude of above-mentioned error waveform signal 605.
Illustrated PWM portion 123 generates the pwm signal of desired shape, sends to illustrated " logic-based IC, the cut-out of pwm signal/by (ON/OFF) control part " 124.The cut-out of said PWM signal/after the indication that receives based on above-mentioned " the H bridge stops, CRANK PULSES ", carry out the cut-out of pwm signal/, provide pwm signal to illustrated H bridge driver 125 by control by control part 124.H bridge driver 125 is based on the said PWM signal, each FET in the control inverter circuit part 104.The control signal (with the waveform of pwm signal) of representing to control above-mentioned each FET with the waveform shown in illustrated waveform 606 and 607.And illustrated waveform 608 comprises fluctuation as DC bus-bar voltage.
Fig. 3 represents the processing structure of control circuit (single-chip microcomputer).And Fig. 4 is illustrated in the opportunity that the execution in the control circuit (single-chip microcomputer) is handled.
As shown in Figure 4, principal function handling part 401 carries out between first～fourth phase of the quartering at the one-period of alternating voltage as output with inverter part, carries out as mutual different the first～the of the processing of the state, output and the control that are used for detecting respectively above-mentioned inverter part and manages everywhere.In addition, be made as in this example between first～fourth phase, carry out the first～the respectively and manage everywhere, handle but also can during arbitrarily, carry out arbitrarily.That is, can be between first～fourth phase, carry out the first～any processing in the reason everywhere respectively.
In addition, in fact, for the one-period of quartering alternating voltage, principal function handling part 401 utilizes the interruption that is taken place each opportunity of one-period N (N=128 in this example) five equilibrium of alternating voltage in the benchmark timer discontinuities 4021 by Interrupt Process portion 402.That is, add up the quantity of above-mentioned interruption, this count value is under 1,32,64,96 the situation, to begin between first～fourth phase respectively.
The first state processing portion 4011 shown in Figure 3 handles during the first state processing portion shown in Figure 4, the second state processing portion 4012 handles during second state shown in Figure 4, third state handling part 4013 is handled during the third state shown in Figure 4, and four condition handling part 4014 is handled during four condition shown in Figure 4.
First state begins during for " 1 " with the value of the content Sin-itr of counter (not shown) at the benchmark timer, second state begins when the value of foregoing Sin-itr is " 32 ", when the third state was " 64 " in the value of foregoing Sin-itr, four condition began when the value of foregoing Sin-itr is " 96 ".And foregoing is repeatedly from being worth " 127 " via being worth " 0 " to value " 1 ".In addition, as shown in Figure 4, the renewal of the content Sin-itr of said reference timer usefulness counter (not shown) and the sinusoidal waveform of output voltage are synchronous.
Fig. 5, Fig. 6, Fig. 7, Fig. 8 represent corresponding with the above-mentioned four kinds of states contents processing that will be carried out by control circuit (single-chip microcomputer).In addition, Fig. 7 is connected figure of expression with Fig. 8.
Fig. 5 represents to start the flow chart of Infinite Cyclic.
(S1): carry out initialization.
(S2): start preparation.
(S3): enter Infinite Cyclic.
Fig. 6 represents the contents processing of the state 1 of corresponding execution with Infinite Cyclic to state 4.
In the processing of state 1,
(S28): will inverter part M shown in Figure 1 (master) 101A and inverter part S (from) the transmission storage that sends between the 101B is to register.In above-mentioned transmission data, contain by effective power and reactance capacity from inverter output.Then will describe about the mode that produces effective power and reactance capacity in aftermentioned.
(S29): begin to send.Promptly the inverter part to the other side is sent in the transmission data of (S28) storage.
In the processing of state 2,
(S30): calculate instruction rotating speed at engine.
(S31): begin to send this rotating speed.Send to control unit of engine shown in Figure 1 (ECU) 301.
In the processing of state 3,
(S32): the failure diagnosis of carrying out inverter part.
(S33): under the situation that becomes overcurrent condition, check above-mentioned overcurrent duration and at the appointed time to situation under judge whether need protection.
(S34): judge whether need overtemperature protection based on the sensing data of temperature sensor shown in Figure 1 107.
In the processing of state 4,
(S35): as required, adjust output voltage is changed etc.
(S36):, the data that receive from the other side are handled with regard to the communication between the control device of each inverter part.
(S37):, then detect the unusual situation that exists if the other side exists unusually.
(S38): the adjustment of changing the peak value etc. of overcurrent amplitude limiter.
(S39): carry out synchronized processing as required, to carry out the synchronization of the frequency (phase place) between two inverter part.
Fig. 7 and Fig. 8 are connected to a figure, are the figure that represents the contents processing of Infinite Cyclic among both.
(S4): check whether be state 1.
(S5): if state 1 then carries out the processing of state shown in Figure 61.
(S6): when the processing of state 1 finishes, transfer to illustrated state 1 '.
(S7):, check whether be state 1 ' via shifting for "No" or at (S6) at (S4).
(S8): under the situation for state 1 ', be left intact and directly advance to (S9).
(S9):, then transfer to state 2 if the value i of the content of said counting device (the value i of Sin-itr) has surpassed " 31 ".
(S10):, check whether be state 2 via shifting for "No" or at (S9) at (S7).
(S11): if state 2 then carries out the processing of state shown in Figure 62.
(S12): transfer to state 2 '.
(S13):, check whether be state 2 ' via shifting for "No" or at (S12) at (S10).
(S14): under the situation of state 2 ', be left intact and directly advance to (S15).
(S15):, then transfer to state 3 if i has surpassed " 63 ".
(S16):, check whether be state 3 via shifting for "No" or at (S15) at (S13).
(S17): if state 3 then carries out the processing of state shown in Figure 63.
(S18): transfer to state 3 '.
(S19):, check whether be state 3 ' via shifting for "No" or at (S18) at (S16).
(S20): under the situation of state 3 ', be left intact and directly advance to (S21).
(S21):, then transfer to state 4 if i has surpassed " 95 ".
(S22): shift for "No" or at (S21) via (S19), check whether be state 4.
(S23): if state 4 then carries out the processing of state shown in Figure 64.
(S24): transfer to state 4 '.
(S25): be "No" or carried out at (S24) being state 4 ' under the situation of transfer via (S22).
(S26): under the situation of state 4 ' via (S25), be left intact and directly advance to (S27).
(S27): is that condition is returned (S4) with i less than " 32 ".
As judging that by Fig. 7 and Fig. 8 the value i of Infinite Cyclic and Sin-itr carries out handling to the processing of state 4 of state 1 accordingly repeatedly.Promptly (between the i=0～i=127), carry out the processing of each state repeatedly at the one-period of voltage.
Here, control circuit (single-chip microcomputer) 110 schematically describes generating by the value of the value of the effective power P that sends from inverter part and reactance capacity Q and then by the mode from the value of the output current of inverter part output.
As mentioned above, control circuit (single-chip microcomputer) 110 generates the target waveform signal 602 that the output voltage with inverter circuit portion 101 outputs meets.And, as shown in Figure 4,, send by benchmark timer discontinuities shown in Figure 3 4021 and to interrupt in the moment with the one-period of the output voltage of the inverter part one-period of target waveform signal 602 (promptly) 128 five equilibriums.
Thus, control circuit (single-chip microcomputer) 110 can carry out n time (128 times) sampling to the output voltage v sin ω t of inverter part at one-period, and generates the sampling value v sin (n) on each opportunity.And, can generate and only the staggered corresponding sampling value v cos (n) of v cos ω t of pi/2 of the phase place that makes above-mentioned output voltage v sin ω t.
In addition,, then can be ready to v sin (n) in advance, for example these values are stored in the tables of data on the memory if the output voltage of inverter part is determined.And, on the opportunity that respectively is worth i=n that can aim at sin-itr, extract v sin (n) and v cos (n).
On the other hand, as mentioned above, control circuit (single-chip microcomputer) 110 as shown in Figure 2, by the output current of current sensor 108 induction from inverter part 101.This output current of sensing is converted to digital signal at input oral area 112 shown in Figure 2, and every said reference timer discontinuities 4021 is sent the interruption opportunity of interruption (1/128 interrupts), just is input to control circuit (single-chip microcomputer) 110.
In addition, much less, also just be input to control circuit (single-chip microcomputer) 110 opportunity by the every above-mentioned interruption of input oral area shown in Figure 2 113 from the DC bus-bar voltage of DC bus-bar voltage testing circuit 106 shown in Figure 2.
The value of the output current of importing successively by input oral area 112 shown in Figure 2 be about this output current i, at the instant value i (n) on opportunity of each sampling.
Conceptive, the effective power P of inverter part is
With v sin (n) * i (n)
One-period to voltage is quadratured, and between a plurality of cycles the value of averaging, and the reactance capacity Q of inverter is
With v cos (n) * i (n)
One-period to voltage is quadratured, and between a plurality of cycles the value of averaging.
And, in like manner be the integrated value of the one-period of above-mentioned i (n) from the output current I of inverter part.
In the interruption of control circuit (single-chip microcomputer) 110, consider to have 1/128 interruption (interruption of benchmark timer) shown in Figure 9, edge shown in Figure 10 to interrupt and 21.71ms interruption shown in Figure 11.
Fig. 9 represents the flow chart about 1/128 interruption (benchmark timer interruption) corresponding with the value i of above-mentioned Sin-itr.
In Fig. 9,
(S40): the counter of value i of giving Sin-itr from " 0 " via " 127 " and then " 0 ", " 1 " ... the ground counting.
(S41): check with above-mentioned state 1 shown in Figure 6 to the corresponding processing of state 4 whether export.
(S42): at (S41) is under the situation of "No", checks whether to be in preparing about the output of each corresponding states (free position of state 1 to the state 4).
(S43): at (S42) is under the situation of "Yes", checks whether above-mentioned value i is " 0 ".Above-mentioned (S43) is under the situation of "Yes", advances to (S44).Under the situation for "No", advance to (S45).
(S44): the H bridge that will constitute inverter circuit portion 104 is made as on-state.That is, be made as the state that inverter circuit portion 104 can send output.
(S45): the value of the counter (S40) (being the value of i) is deposited the D/A register.
(S46): above-mentioned (S42) is under the situation of "No", and promptly state is output as under the situation of holding state, checks whether to have mistake in inverter part.(S46) advance to (S47) under the situation of "Yes"; Under the situation for "No", advance to (S48).
(S47): transfer in the output preparation about corresponding states.
(S48): in the processing of this (S48), judge to connect still to disconnect the thyristor that is present in rectification circuit portion 103 shown in Figure 1.Promptly be switched on or switched off thyristor, be maintained predetermined value and make as far as possible by the direct voltage (i.e. direct voltage from rectification circuit portion 103 to output) of builtin voltage transducer shown in Figure 1 106 inductions according to this result of determination.
(S49):, generate above-mentioned corresponding to the value i of above-mentioned Sin-itr
v?sin(n)×i(n)
v?cos(n)×i(n)
i(n)。And, be used to obtain effective power P, reactance capacity Q, output current I.
(S50): whether the value i that checks above-mentioned Sin-itr is " 127 ".Advance under the situation for "Yes" (S51).Advance under the situation for "No" (S52).
(S51): be under the situation of "Yes" (S50), control circuit (single-chip microcomputer) 110 will send to another inverter part from the phase place (output voltage is zero increase loss-free opportunity from level) that self-converse becomes the output voltage of device portion.That is, with lossless opportunity described later signal be converted to low state from high state.This conversion is sent to another inverter part via order wire shown in Figure 1 111.
(S52): be under the situation of "No" (S50), with above-mentioned lossless opportunity conversion of signals be high state or maintain high state.
Figure 10 represents the flow chart about the edge interruption.
(S51) that this edge interrupts occurring in corresponding to Fig. 9 handles, detect another inverter part (to method, apparatus) lossless opportunity, signal became low state from high state the time.
(S53): to method, apparatus lossless opportunity signal when high state becomes low state, enter this interruption routine.
(S54): in this interruption routine, preserve Counter Value (value of i) from the Sin-itr of inverter part (from equipment).
In addition, the processing corresponding with this edge interruption is used for judging (S39) in the processing of state shown in Figure 64, whether carries out the mutual synchronized processing of inverter part.
Figure 11 represents the flow chart about the 21.71mS interruption.
This 21.71mS interrupts with the opportunity of above-mentioned Sin-itr irrelevant, takes place accordingly with the counting of the timer of counting 21.71mS.
(S55): check whether inverter is in overcurrent condition.
(S56): be under the situation of "Yes" (S55), the overcurrent timer is counting upwards.
(S57): be under the situation of "No" (S55), the overcurrent timer carries out countdown.
(S58): check whether the time arrives the overcurrent timer.
(S59): be under the situation of "Yes" (S58), carry out overcurrent protection.The H bridge that is inverter circuit portion 104 enters off-state (output is made as zero state).
(S60): according to by (S58) or carry out " the switch input is judged " opportunity of (S59) handling in proper order.That is, the power mode switch 550 shown in the bottom right of controlling chart 1 is on-state or off-state.In addition, under the situation that power mode switch 550 is connected, mean the situation that the burden requirement that is connected with inverter part sharply increases electric current that has.This power mode switch 550 manually is switched on or switched off by the operator.
Below, the control corresponding with output voltage of inverter generator is described.
(A) improvement of the output voltage-output current characteristic of inverter part.
As mentioned above, control circuit (single-chip microcomputer) 110 generates the target waveform signal 602 that has from the desired output voltage of the indication of inverter circuit portion 101.
In inverter generator up to now, if the output voltage that is made as from inverter part for example is 110 volts, then control circuit (single-chip microcomputer) 110 carries out following control: the sinusoidal waveform that predetermined frequency is for example corresponding with 110 volts voltages of 50Hz is as above-mentioned 602 generations, and inverter part is exported the corresponding output voltage of above-mentioned 110 volts and target waveform signal 602.
Figure 12 represents existing output voltage control mode.
Mark 602,116,104,109 among the figure schematically shows figure, but the parts with shown in Figure 2 are corresponding respectively.
Under the existing situation, control circuit (single-chip microcomputer) 110 generates single target waveform signal 602.And, detected as output voltage from the voltage of the output of inverter circuit portion 104 (be actually the state that is in PWM be equivalent to waveform shown in Figure 2 600) at test section 116, and compare with target waveform signal 602.Then, based on above-mentioned comparative result, the H bridge of control inverter circuit part 104 is so that the error of comparative result is zero.
In addition, in existing structure shown in Figure 12, test section 116 detects the reasons are as follows of voltage at the input side of illustrated smothing filtering portion 109.
That is, as existing situation, under the situation of the single load power supply of parallel connection, the voltage of the outlet side of smothing filtering portion 109 also is subjected to the restriction from the output voltage of another inverter part two inverter part.Therefore, also become meaningless even detect at the voltage of the outlet side of smothing filtering portion 109 as shown in figure 12 and carry out FEEDBACK CONTROL as shown in figure 12.
Under the situation of as shown in figure 12 structure, because the voltage position, that between the two ends of smothing filtering portion 109, produce that produces by the output current that flows into smothing filtering portion 109, thus different from the output voltage of inverter part self with the above-mentioned output voltage that will export from inverter part.That is, the voltage that target waveform signal 602 is expected is made as E, and output current is made as I, and when the resistance of smothing filtering portion 109 was made as Z, the voltage V of the outlet side of smothing filtering portion 109 shown in Figure 12 was
V＝E-ZI
Rather than V=E.
Figure 13 represents general output voltage-output current characteristic.
In general, because above-mentioned ZI, thereby the voltage V of the outlet side of smothing filtering portion 109 dissimilates according to the character of the load that is connected with inverter part.Particularly under condensive load and situation that inverter part is connected, because above-mentioned ZI can produce the situation that output voltage V rises along with the increase of output current I.
Figure 14 is illustrated in output voltage-output current characteristic that the present invention expects.That is, under situation of the present invention,, can both make output voltage mild no matter load is inductive load (L load), condensive load (C load) or a resistive load (R load) as far as possible.
In order to give this output voltage-output current characteristic shown in Figure 14, in the present invention, with the character of load accordingly, can change the sinusoidal wave amplitude that the target waveform signal 602 that generated by control circuit (single-chip microcomputer) 110 provides.In other words, have the target waveform signal 602 corresponding with multiple amplitude.Promptly (i) effective power of exporting along with inverter part becomes big, the target waveform signal 602 that provides amplitude to increase, and (ii) the reactance capacity of exporting along with inverter part becomes big, the target waveform signal 602 that provides amplitude to reduce.Words with general formulate
Amplitude=A+k
1P-k
2Q
(wherein, A is the value that is equivalent to the rated output voltage of inverter part, k
1, k
2The expression coefficient.)
In fact,
(amplitude)=(Dian Ya Department number) * A
Situation under as " voltage coefficient " k
Based on A+k
1P-k
2Q=Ak
Give k=1+ (k
1/ A) P-(k
2/ A) Q, as the inverter generator of the series connection of situation of the present invention in actual k
1/ A, k
2Even the value of/A is set at effective power P, reactance capacity Q variation has taken place, also can make the output voltage of inverter part mild as far as possible.And, control circuit (single-chip microcomputer) 110 based on the calculation during the real-world operation and effective power P, reactance capacity Q the sinusoidal wave amplitude of target waveform signal 602 is changed.The sinusoidal wave amplitude of this variation is corresponding to the value i of each above-mentioned Sin-itr, and the instant value of voltage is recorded in the tables of data.
In the structure corresponding with the present invention shown in Figure 2, the voltage (waveform 600) that output voltage test section 116 extracts from the input of smothing filtering portion 109, but under situation of the present invention, consider the voltage ZI between the two ends of smothing filtering portion 109, and be ready to above-mentioned target waveform signal 602, thereby existing situation is different with situation of the present invention.
Even particularly two inverter part are connected, under each load unbalanced situation, as shown in figure 14 based on the output voltage-output current characteristic of each inverter part.
(B) the mutual Phase synchronizationization of inverter part.
Figure 15 and Figure 16 are the figure that is used to illustrate two Phase synchronizationization that inverter part is mutual.
The M of Figure 15 is a side (master) the side 101A in two inverter part 101, S be wherein the opposing party (from) side 101B." representing with the shape that descends immediately after rising " pulse among Figure 15 converts low state for the present invention who represents with the form of pulse signal on said lossless opportunity to from high state.About this on lossless opportunity signal itself will clearly expression in Figure 17.
In Figure 15, in the one-period of output voltage, in inverter part each other, send once phase place at least mutually from the output voltage of inverter part.Certainly, also can only send once corresponding to a plurality of cycles.
Transverse axis express time in Figure 15, and be expressed as by sending pulse from the 101B of side inverter portion and sending pulse by master inverter part 101A.But, according to carrying out too with the order of this reversed in order.
In Figure 16,
Handle about sending,
(S61): in a side, in the moment transmission pulse of internal counter (counter shown in (S40) shown in Figure 9) for value " 127 " from the 101B of side inverter portion.In addition, value " 127 " is the value in the 101B of side inverter portion.This handles corresponding with the processing of (S51) among Fig. 9.
Handle about receiving,
(S62): in the side of master inverter part 101A, the pulse detection that a side by from side inverter portion 101B corresponding with above-mentioned (S61) sends over is to receive on the opportunity of which value i of the internal counter (counter shown in (S40) shown in Figure 9) of itself.
(S63): under the different situation of the value i on opportunity of the opportunity of the value i of inverter part (master inverter part 101A) and reception, make master inverter part 101A output voltage phase place with small unit (with time of one-period as small unit quantity) change.
Figure 17 is used to illustrate the figure that produces the situation of difference in two mutual phase places of inverter part.
In Figure 17,
(i) be illustrated in the A equipment (side inverter part), become opportunity (interruption opportunity) of " 127 " at the value i of Sin-itr, take place to interrupt and lossless opportunity signal convert the situation of low state to from high state,
The signal on lossless opportunity of (ii) representing this A equipment side converts the situation of low state to from high state, has received the situation of the value i of Sin-itr in the B equipment (the opposing party's inverter part) during " 126 ",
(iii), be used as phase lag, the one-period of output voltage is only shortened 12.8 μ S from equipment at this B equipment side.If moreover under the situation of the value that has received above-mentioned Sin-itr during " 127 ", the cycle of the output voltage of B equipment remains initial set value.
The processing of exchanging the processing of A equipment shown in Figure 17 and B equipment too, any situation no matter, phase place is synchronization successively all.
The processing of A equipment side shown in Figure 17 is carried out at above-mentioned (S51) shown in Figure 9.And the processing of B equipment side shown in Figure 17 is carried out at above-mentioned (S53) shown in Figure 10.
(C) engine becomes the engine speed increaseization of the situation of high load capacity under than the state that turns round under the slow-speed of revolution sharp.
In inverter generator,, under the less situation of the desired effective power of the load that is connected with inverter part, make engine with less rotation speed operation for example in order to suppress noise from engine.
Figure 18 represents the existing flow chart that is used for the engine speed indication.
In Figure 18,
(S64): calculate from the effective power of inverter part output.
(S65): indicate this rotating speed from control circuit (single-chip microcomputer) 110 of inverter part to control unit of engine (ECU) 301 (with reference to Fig. 1), to guarantee to be provided to the very sufficient rotating speed that for example becomes the limit of power of inverter part from multipole permanent magnet generator (PMA) 200 (with reference to Fig. 1).In addition, current effective power is restored and the retrieve data table, obtain corresponding rotating speed at control circuit (single-chip microcomputer) 110.
Under existing situation, owing to come to determine the rotating speed of engine as shown in figure 18, thereby situation about under the less state of effective power, turning round, the rotating speed of engine is less.Thus, the power that is provided to inverter part from multipole permanent magnet generator (PMA) also is in less state.
Under this operating condition, increase sharp in this case at the load that will provide as inverter part, the situation that the rotating speed of the former engine that should increase does not slowly increase can take place.
That is, under situation about increasing from the effective power of inverter part under (S65) of Figure 18, assign the indication that engine speed is increased.But, when engine turns round under less rotating speed, moment of torsion that engine should export under this state can take place and become identical state (so-called engine does not have surplus torque) from the desired moment of torsion of multipolar generator (PMA) side, even can taking place, indication start pusher side to make it increase rotating speed, the situation that the rotating speed of engine does not also increase.
In the present invention, in order to prevent to become this state, the load that is connected with inverter part becomes under the situation of high load capacity sharp, and the output voltage of inverter part output is temporarily reduced, and suppresses load current, thereby the rotating speed of engine is increased.
Furthermore, remove the state of above-mentioned " moment of torsion that under this state, should export of engine with become identical state " from the desired moment of torsion of multipolar generator (PMA) side, temporary transient reduce " from the desired moment of torsion of multipolar generator (PMA) side ", thereby generate above-mentioned " surplus torque ", and impel the rotating speed of engine to increase.
Flow chart when Figure 19 represents to impel engine speed to increase.
In Figure 19,
(S66): the state of the load that control circuit (single-chip microcomputer) 110 inspection is connected with inverter part, checking whether this load (current load) is compared with the load of last time becomes high load capacity.Under the situation for "No", return.
(S67): at (S66) is under the situation of "Yes", and control circuit (single-chip microcomputer) 110 reduces the amplitude of target waveform signal 602 shown in Figure 2.
(S68): follow the action of (S67), engine is discharged from so-called the increase of rotating speed by the state of restraining, and increases rotating speed.That is, in (S68), check whether rotating speed uprises.Under the situation for "No", return.
(S69): be under the situation of "Yes" (S68), control circuit (single-chip microcomputer) 110 slowly increases the output voltage of inverter part.
Thus, temporarily suppress higher load condition, the rotating speed of engine is increased.
The inhibition of output decline state takes place in the above-mentioned generator when (D) utilizing permanent magnet generator.
In inverter generator, be provided with the overcurrent amplitude limiter, carry out overtemperature protection with FET to the H bridge that constitutes inverter circuit portion 104.But in order to make the action of overcurrent amplitude limiter, it is the situation of condition that existence makes overcurrent condition continue the scheduled time, also has the situation (certainly, also relevant with the set point of overcurrent level) that temporarily becomes higher load condition.
On the other hand, in multipole permanent magnet generator (PMA) 200, as shown in figure 20, surpass the characteristic that peak value reduces on the contrary if having based on " characteristics of output power " of this generator.
Figure 20 is the power output-output current characteristic of the multipole permanent magnet generator of expression (PMA) and the figure of output voltage-output current characteristic.
The transverse axis of Figure 20 is output current I, and the longitudinal axis is output voltage V or power output P.
Output voltage V reduces (output voltage-output current characteristic) along with the increase of output current I.On the other hand, power output P is the characteristic (power output-output current characteristic) of mountain type at output current I.Therefore, output current I increases, and when surpassing the peak value of power output P, if promptly in Figure 20 output voltage V for dropping to V
0Following state, the power output of multipole permanent magnet generator (PMA) reduces corresponding to the increase of output current.Thus, with the example of Figure 20, turn round in the characteristic range that need increase at increase power output P corresponding to output current I.
Under the situation of Fig. 1 or structure shown in Figure 2, by 103 rectifications of rectification circuit portion, generate DC bus-bar voltage from the output of multipole permanent magnet generator (PMA).Much less, the size of above-mentioned DC bus-bar voltage is kept predetermined level by the thyristor in the rectification circuit portion shown in Figure 2 103 is controlled, but go beyond the limit and when descending, DC bus-bar voltage reduces from the output voltage V of multipole permanent magnet generator (PMA) 200.
In the present invention, detect the situation that above-mentioned DC bus-bar voltage reduces, thereby the output voltage V that is judged as multipole permanent magnet generator (PMA) 200 is the voltage V that drops to limit shown in Figure 20
0Following situation, and control circuit (single-chip microcomputer) 110 deliberately makes the output voltage from inverter part reduce.Promptly, the load current that is connected with inverter part is reduced, thereby reduce output current I, and make this generator (PMA) 200 running under the ranges of characteristics state of " the increase power output P corresponding to output current I increases " from multipole permanent magnet generator (PMA) 200.
In addition, because as shown in Figure 2, control circuit (single-chip microcomputer) 110 is imported DC bus-bar voltage via DC bus-bar voltage testing circuit 106, thereby the output voltage of inverter part is reduced.
In addition, as shown in figure 20, the above-mentioned output voltage-output current characteristic of multipole permanent magnet generator (PMA) 200 and above-mentioned power output-output current characteristic have the rising along with environment temperature, the tendency that globality ground reduces.
(E) setting corresponding with overtemperature protection.
As shown in Figure 1, be provided with temperature sensor 107, with the superheat state of the FET in the protection H bridge corresponding to inverter circuit portion 104.
Under the existing situation; just be used for the setting of this overtemperature protection; usually no matter pass through lower situation or the condition with higher of environment temperature that said temperature transducer 107 is measured under the state; consider the possibility of loading short circuit and becoming superheat state, the set point that is used for overtemperature protection generally is set at lower value.
In the present invention; (i) under the situation that environment temperature is lower; the set point that will be used for overtemperature protection is set at high slightly value; and reduce above-mentioned set point along with the rising of environment temperature; (ii) and then, under the lower situation of environment temperature, the load that detects inverter part connects the situation of overcurrent condition for a long time; carry out overtemperature protection, even and make along with the rising of environment temperature is shortened this connect hours and also can be detected.
Figure 21 represents to be used for the flow chart of overtemperature protection.
In Figure 21,
(S70): measure environment temperature by temperature sensor 107.
(S71): under the lower situation of environment temperature, will be made as " the overcurrent time is to the judgement time " greatlyyer, and set point B is feasible diminishes along with the rising of environment temperature.
(S72): whether the output current of verification inverter part has surpassed predetermined value.
(S73): be under the situation of "Yes" (S72), the value of counter is counting upwards.
(S74): be under the situation of "No" (S72), the value of above-mentioned counter is counted down.
(S75): whether the value of checking counter has surpassed above-mentioned value B.
(S76): be under the situation of "Yes" (S75), disconnect the output of inverter part.With the structure situation of Fig. 2, control circuit (single-chip microcomputer) 110 sends " stop signal of H bridge " via output oral area 115, and " logic-based IC, the cut-out of pwm signal/by (ON/OFF) portion " 124 cut-out pwm signals.
Industrial utilizability
As mentioned above,, in inverter generator,, have nothing to do, can both make the output voltage-output current characteristic of each inverter part become mild as far as possible with the size of load and the character of load even load unbalanced between a plurality of inverter part according to the present invention.
Claims (5)
1. inverter generator comprises:
Engine; Alternating current generator by above-mentioned engine rotation driving; And at least two inverter part that the alternating voltage of being responded to by the power coil of this alternating current generator is provided,
Described each inverter part has: the above-mentioned alternating voltage that provides is carried out the rectification circuit portion that rectification generates direct voltage; The capacitance part of the level and smooth above-mentioned direct voltage that generates; The inverter circuit portion of the direct voltage after being applied in smoothly; And the alternating voltage that generates by this inverter circuit portion carried out smoothly obtaining the smothing filtering portion of sine wave AC voltage,
The output of the above-mentioned smothing filtering of each the corresponding portion formation that is connected in series with above-mentioned at least two inverter part,
Described inverter generator is characterised in that:
Above-mentioned inverter part comprises respectively: builtin voltage transducer, its detection are applied to the size of the level and smooth direct voltage of the above-mentioned warp of inverter circuit portion;
Current sensor, it detects from the output current of above-mentioned inverter circuit portion output; And
Control circuit, its provide above-mentioned builtin voltage sensor to direct voltage as DC bus-bar voltage and the output current that arrives by above-mentioned current sensor senses is provided,
And above-mentioned control circuit constitutes and generates plurality of target waveform signal and the optionally output be equivalent to the output voltage that above-mentioned inverter part will export; And,
Above-mentioned control circuit is provided with: compare the enlarging section, alternating voltage that it will be corresponding with above-mentioned target waveform signal and the output voltage of exporting from above-mentioned inverter part compare; PWM portion, it generates the control signal of the above-mentioned inverter circuit of control portion, to eliminate the error between above-mentioned alternating voltage and above-mentioned output voltage; And the H bridge driver, its guiding is from the control signal of said PWM portion and control above-mentioned inverter circuit portion,
Above-mentioned control circuit generates desirable output voltage predetermined value, from the value corresponding of inverter part output and from the value corresponding of inverter part output with reactance capacity with effective power; And,
Above-mentioned desirable output voltage predetermined value is added that the value of synthetic above-mentioned effective power and above-mentioned reactance capacity determines the amplitude of the alternating voltage corresponding with above-mentioned target waveform signal.
2. inverter generator comprises:
Engine; Alternating current generator by above-mentioned engine rotation driving; And at least two inverter part that the alternating voltage of being responded to by the power coil of this alternating current generator is provided,
Described each inverter part has: the alternating voltage that is provided is carried out the rectification circuit portion that rectification generates direct voltage; The capacitance part of the level and smooth above-mentioned direct voltage that generates; Apply inverter circuit portion through level and smooth direct voltage; And the alternating voltage that generated of level and smooth above-mentioned inverter circuit portion and the smothing filtering portion that obtains sine wave AC voltage,
The output of the above-mentioned smothing filtering of each the corresponding portion formation that is connected in series with above-mentioned at least two inverter part,
Described inverter generator is characterised in that:
Above-mentioned inverter part comprises respectively: builtin voltage transducer, its detection are applied to the size of the level and smooth direct voltage of the above-mentioned warp of inverter circuit portion;
Current sensor, it detects from the output current of above-mentioned inverter circuit portion output; And
Control circuit, its provide above-mentioned builtin voltage sensor to direct voltage as DC bus-bar voltage and the output current that arrives by above-mentioned current sensor senses is provided, and,
Above-mentioned control circuit constitutes and generates plurality of target waveform signal and the optionally output be equivalent to the output voltage that above-mentioned inverter part will export, and
Be provided with: compare the enlarging section, alternating voltage that it will be corresponding with above-mentioned target waveform signal and the output voltage of exporting from above-mentioned inverter part compare; PWM portion, it generates the control signal of the above-mentioned inverter circuit of control portion, to eliminate the error between above-mentioned alternating voltage and above-mentioned output voltage; And the H bridge driver, its guiding is from the control signal of said PWM portion and control above-mentioned inverter circuit portion,
Between each control circuit of corresponding setting with above-mentioned each inverter part, be provided with order wire,
The control circuit of each inverter part constitutes will give the control circuit of another inverter part from the phase bit walk from the output voltage of inverter part output from having at least once between the cycle of the pre-determined number of the output voltage of inverter part output,
The control circuit of each inverter part constitutes: when being judged to be from when there are differences between the phase place of the output voltage of inverter part output and the phase place of being notified by another inverter part from the output voltage of another inverter part, the phase place from the alternating voltage corresponding with above-mentioned target waveform signal of inverter part one side is changed with small unit.
3. inverter generator comprises:
Engine; Alternating current generator by above-mentioned engine rotation driving; And at least two inverter part that the alternating voltage of being responded to by the power coil of above-mentioned alternating current generator is provided,
Described each inverter part has: the above-mentioned alternating voltage that provides of rectification also generates the rectification circuit portion of direct voltage; The capacitance part of the level and smooth above-mentioned direct voltage that generates; Apply inverter circuit portion through level and smooth direct voltage; And the alternating voltage that generates of level and smooth above-mentioned inverter circuit portion and the smothing filtering portion that obtains sine wave AC voltage,
The output of the above-mentioned smothing filtering of each the corresponding portion formation that is connected in series with above-mentioned at least two inverter part,
Described inverter generator is characterised in that:
Above-mentioned inverter part comprises respectively: builtin voltage transducer, its detection are applied to the size of the level and smooth direct voltage of the above-mentioned warp of inverter circuit portion;
Current sensor, it detects from the output current of above-mentioned inverter circuit portion output; And
Control circuit, its provide above-mentioned builtin voltage sensor to direct voltage as DC bus-bar voltage and the output current that arrives by above-mentioned current sensor senses is provided, and
Above-mentioned control circuit constitutes and generates plurality of target waveform signal and the optionally output be equivalent to the output voltage that above-mentioned inverter part will export, and
Be provided with: compare the enlarging section, alternating voltage that it will be corresponding with above-mentioned target waveform signal and the output voltage of exporting from above-mentioned inverter part compare; PWM portion, it generates the control signal of the above-mentioned inverter circuit of control portion, to eliminate the error between above-mentioned alternating voltage and above-mentioned output voltage; And the H bridge driver, its guiding is from the control signal of said PWM portion and control above-mentioned inverter circuit portion,
Above-mentioned control circuit judges from the load of taking a sample when inferior load and last time of inverter part power supply to compare whether increase and become high load capacity,
As condition, temporarily reduce the amplitude of the AC power corresponding with the situation that satisfies this result of determination with above-mentioned target waveform signal,
After the rotating speed that is judged to be engine increases, the amplitude of above-mentioned alternating voltage is increased gradually.
4. inverter generator comprises:
Engine; Alternating current generator by above-mentioned engine rotation driving; And at least two inverter part that the alternating voltage of being responded to by the power coil of above-mentioned alternating current generator is provided,
Described each inverter part has: the above-mentioned alternating voltage that provides of rectification also generates the rectification circuit portion of direct voltage; The capacitance part of the level and smooth above-mentioned direct voltage that generates; Apply inverter circuit portion through level and smooth direct voltage; And the alternating voltage that generates by above-mentioned inverter circuit portion carried out level and smooth and obtain the smothing filtering portion of sine wave AC voltage,
The output of the above-mentioned smothing filtering of each the corresponding portion formation that is connected in series with above-mentioned at least two inverter part,
Described inverter generator is characterised in that:
Above-mentioned inverter part comprises respectively: builtin voltage transducer, its detection are applied to the size of the level and smooth direct voltage of the above-mentioned warp of inverter circuit portion;
Current sensor, it detects from the output current of above-mentioned inverter circuit portion output; And
Control circuit, its provide by above-mentioned builtin voltage sensor to direct voltage as DC bus-bar voltage and the output current that arrives by above-mentioned current sensor senses is provided, and,
Above-mentioned control circuit constitutes and generates plurality of target waveform signal and the optionally output be equivalent to the output voltage that above-mentioned inverter part will export, and
Be provided with: compare the enlarging section, alternating voltage that it will be corresponding with above-mentioned target waveform signal and the output voltage of exporting from above-mentioned inverter part compare; PWM portion, it generates the control signal of the above-mentioned inverter circuit of control portion, to eliminate the error between above-mentioned alternating voltage and above-mentioned output voltage; And the H bridge driver, its guiding is from the control signal of said PWM portion and control above-mentioned inverter circuit portion,
Above-mentioned alternating current generator is made of permanent magnet generator,
And, above-mentioned control circuit constitute when by above-mentioned builtin voltage sensor to the size of DC bus-bar voltage when being lower than predetermined level, the amplitude of the alternating voltage corresponding with above-mentioned target waveform signal is temporarily reduced,
Above-mentioned permanent magnet generator turns round in the characteristic range that the output from above-mentioned permanent magnet generator increases corresponding to the increase from the output current of above-mentioned inverter part.
5. inverter generator comprises:
Engine; Alternating current generator by above-mentioned engine rotation driving; At least two inverter part of the alternating voltage of being responded to by the power coil of above-mentioned alternating current generator are provided,
Described each inverter part has: the above-mentioned alternating voltage that provides of rectification also generates the rectification circuit portion of direct voltage; The above-mentioned direct voltage that generates is carried out level and smooth capacitance part; Apply inverter circuit portion through level and smooth direct voltage; And the alternating voltage that generates by above-mentioned inverter circuit portion carried out level and smooth and obtain the smothing filtering portion of sine wave AC voltage,
The output of the above-mentioned smothing filtering of each the corresponding portion formation that is connected in series with above-mentioned at least two inverter part,
Described inverter generator is characterised in that:
Above-mentioned inverter part comprises respectively: builtin voltage transducer, its detection are applied to the size of the level and smooth direct voltage of the above-mentioned warp of inverter circuit portion;
Current sensor, it detects from the output current of above-mentioned inverter circuit portion output; And
Control circuit, its provide by above-mentioned builtin voltage sensor to direct voltage as DC bus-bar voltage and the output current that arrives by above-mentioned current sensor senses is provided,
And above-mentioned control circuit constitutes and generates plurality of target waveform signal and the optionally output be equivalent to the output voltage that above-mentioned inverter part will export, and
Be provided with: compare the enlarging section, alternating voltage that it will be corresponding with above-mentioned target waveform signal and the output voltage of exporting from above-mentioned inverter part compare; PWM portion, it generates the control signal of the above-mentioned inverter circuit of control portion, to eliminate the error between above-mentioned alternating voltage and above-mentioned output voltage; And the H bridge driver, its guiding is from the control signal of said PWM portion and control above-mentioned inverter circuit portion,
In above-mentioned inverter circuit portion, be provided with temperature sensor, be directed to above-mentioned control circuit from the induction result of this temperature sensor,
Above-mentioned control circuit is little value along with increase the time that will be used for overcurrent protection based on above-mentioned induction result's temperature to the judgement time set, will judge that simultaneously whether said temperature is that the overcurrent decision level of less overcurrent is chosen to be little value,
Judge whether produced the overcurrent that surpasses this overcurrent decision level,
When timing under the overcurrent generation state and under non-overcurrent generation state the value of the timer of countdown surpass the above-mentioned time and during the time, cut off the output of inverter part to judgement.
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| JP2008-276314 | 2008-10-28 | ||
| JP2008276314A JP5424611B2 (en) | 2008-10-28 | 2008-10-28 | Inverter generator |
| PCT/JP2009/005647 WO2010050176A1 (en) | 2008-10-28 | 2009-10-27 | Inverter generator |
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| CN102257722A true CN102257722A (en) | 2011-11-23 |
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| CN103166184A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Delayed alarm method for direct current variable pitch motor |
| CN103166189A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Delayed alarm protection method for alternating current (AC) variable-pitch motor |
| CN103166190A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Alternating current variable-pitch motor protection device and method |
| CN104506049A (en) * | 2015-01-15 | 2015-04-08 | 山东省科学院自动化研究所 | Device and method for inhibiting transient fluctuation of inverter power supply output voltage |
| CN107786098A (en) * | 2016-08-29 | 2018-03-09 | 浙江乾仕智能科技有限公司 | Multi-stage power transformation system and its control method |
| 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 |
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| CN102130453B (en) * | 2010-11-04 | 2013-06-05 | 北京鼎汉技术股份有限公司 | Method for outputing high-precision synchronous signal by on-line parallel alternating current power supply module |
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- 2009-10-27 CN CN2009801515568A patent/CN102257722A/en active Pending
- 2009-10-27 WO PCT/JP2009/005647 patent/WO2010050176A1/en active Application Filing
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| JPH01238498A (en) * | 1988-03-18 | 1989-09-22 | Yamaha Motor Co Ltd | Controller for generator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166184A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Delayed alarm method for direct current variable pitch motor |
| CN103166189A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Delayed alarm protection method for alternating current (AC) variable-pitch motor |
| CN103166190A (en) * | 2011-12-19 | 2013-06-19 | 苏州能健电气有限公司 | Alternating current variable-pitch motor protection device and method |
| CN104506049A (en) * | 2015-01-15 | 2015-04-08 | 山东省科学院自动化研究所 | Device and method for inhibiting transient fluctuation of inverter power supply output voltage |
| CN107786098A (en) * | 2016-08-29 | 2018-03-09 | 浙江乾仕智能科技有限公司 | Multi-stage power transformation system and its control method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010110027A (en) | 2010-05-13 |
| WO2010050176A1 (en) | 2010-05-06 |
| JP5424611B2 (en) | 2014-02-26 |
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