CN101635556A - Inverter generator - Google Patents
Inverter generator Download PDFInfo
- Publication number
- CN101635556A CN101635556A CN200910140373A CN200910140373A CN101635556A CN 101635556 A CN101635556 A CN 101635556A CN 200910140373 A CN200910140373 A CN 200910140373A CN 200910140373 A CN200910140373 A CN 200910140373A CN 101635556 A CN101635556 A CN 101635556A
- Authority
- CN
- China
- Prior art keywords
- current
- load
- power factor
- inverter
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Eletrric Generators (AREA)
- Inverter Devices (AREA)
Abstract
The invention provides an inverter generator, which improving responsivity to engine speed control instead of calculating target rotating speed of the engine according to a estimation value of load power according to turn-on rate of thyristor and power factor. The inverter generator has an inverter, the engine includes an air damper controlled by an actuator, alternate current outputted by driven of the engine is converted into direct current for temporary, and the inverter converting the direct current into an alternate current again and outputting the current to the load power. In the inverter generator, voltage and current supplied to the electrical load is detected (S10), a power factor is calculated from the detected voltage and the current (S12, S14), a power of the load is estimated from the detected current and the calculated power factor (S16). Then a desired speed of the engine is determined based on the estimated power of the load (S18), and the actuator is controlled such that an engine speed becomes equal to the desired engine speed (S20), thereby improving the response of engine speed control.
Description
Technical field
The present invention relates to inverter generator, relate in more detail and having by engine-driven Power Generation Section and according to the inverter generator of bearing power control engine speed.
Background technology
A kind of inverter generator like this is well-known, that is: will the current transformer that constitutes by the thyristor electric bridge, temporarily be transformed to direct current from alternating current by the output of engine-driven Power Generation Section, and according to pwm signal (this pwm signal is to use the baseline sinusoidal wave of target output voltage waveform and carrier wave to generate) driving switch element, thereby this direct current is transformed to the alternating current of preset frequency (commercial frequency) and exports, as the example of this inverter generator, can enumerate the technology of following patent documentation 1,2 records.
In the technology of patent documentation 1 record, detect the angle of flow of thyristor, the control engine speed is so that this angle of flow is the target angle of flow.
Patent documentation 1: Japanese kokai publication hei 11-308896 communique
Patent documentation 2: Japanese kokai publication hei 4-355672 communique
In the technology of patent documentation 1 record, as mentioned above, obtain the estimated value of bearing power according to the angle of flow of the thyristor of current transformer, control engine speed according to this estimated value, yet the rotation change of engine is transmitted same as before when the change of the transient state of alternator output voltage, thereby particularly is difficult to precision in underload etc. and estimates bearing power well.Therefore, the response of engine speed control is not necessarily abundant.
Therefore, the objective of the invention is to solve above-mentioned problem, a kind of inverter generator is provided, this inverter generator replaces the estimated value that waits computational load power according to the on-state rate of thyristor according to power factor, and according to this estimated value calculation engine rotating speed of target, thereby improve the response that engine speed is controlled.
And, in the load that the related inverter generator of patent documentation 2 record connects, the low power factor load of mercury vapor lamp etc. is arranged.Like this to load on before the current stabilization power factor bad, thereby the impulse current during starting is big, the output of engine mostly is overload greatly.As a result, it is so unfavorable to have, that is: with in the situation of current stabilization rear drive compare, can be less with the number of the low power factor load of specified output starting.
Therefore, another object of the present invention is to solve above-mentioned problem, and a kind of inverter generator is provided, and this inverter generator improves the response of engine speed control, even and when having connected the low power factor load, also increasing can be with the number of specified output starting as far as possible.
Summary of the invention
In order to solve above-mentioned problem, the invention first aspect relates to a kind of inverter generator, and this inverter generator has: engine, and it has the air throttle that is opened and closed by actuator; The Power Generation Section, it is by described motor driven; Current transformer, it will be transformed to direct current from the alternating current of described Power Generation Section output; Inverter, it has switch element, and will be transformed to alternating current and output to load from the direct current of described current transformer output; And actuator controlling unit, it controls the action of described actuator, and described inverter generator is characterised in that described inverter generator has: the electric current and voltage detecting unit, it detects from the voltage and current of the alternating current of described inverter output; Power factor is calculated the unit, and it comes the rated output factor according to described detected voltage and current; Bearing power estimated value computing unit, it calculates the estimated value of the bearing power that offers described load at least according to described detected electric current and the described power factor that calculates; And the rotating speed of target determining unit, it determines the rotating speed of target of described engine according to the estimated value of the described bearing power that calculates, and described actuator controlling unit is controlled the action of described actuator to reach described definite rotating speed of target.
The inverter generator that second aspect relates to constitutes: described bearing power estimated value computing unit multiplies each other described detected electric current, the described power factor that calculates and rated output voltage, and with its long-pending estimated value as described bearing power.
The inverter generator that the third aspect relates to constitutes, and described inverter generator also has: low power factor load judgment unit, and it judges according to described detected voltage and current whether the load that is connected is the low power factor load; And inverter driving moving cell, it drives described switch element according to pwm signal, to be transformed to the alternating current of preset frequency from the alternating current of described inverter output, and be under the situation of low power factor load in the load that is judged as described connection, make output voltage reduce to return to described output voltage gradually after the scheduled volume, wherein pwm signal is to use the baseline sinusoidal wave of target output voltage waveform and carrier wave to generate.
The inverter generator that fourth aspect relates to constitutes: when the effective value of described detected electric current surpasses the maximum current scheduled volume and during according to the not enough predetermined value of the power factor that phase difference calculated of described detected voltage and current, described low power factor load judgment unit judges is that described load is the low power factor load.
The inverter generator that first aspect relates to constitutes: detect from the voltage and current of the alternating current of inverter output, come the rated output factor according to detected voltage and current, at least calculate the estimated value of the bearing power that offers load according to detected electric current and the power factor that calculates, determine the rotating speed of target of engine according to the estimated value of the bearing power that calculates, and, the action of the actuator that control opens and closes air throttle is to reach determined rotating speed of target, thereby by replacing and according to the estimated value of computational load power such as power factor according to the on-state rate of thyristor, even underload etc. also can precision the estimated value of computational load power well, and control actuator, thereby can improve the response of engine speed control according to this estimated value calculation engine rotating speed of target.And, because the not only estimated value of rated output factor but also computational load power, thereby engine speed is unnecessarily risen, can improve the fuel cost performance.
The inverter generator that second aspect relates to constitutes: detected electric current, the power factor that calculates and rated output voltage are multiplied each other, and with its long-pending estimated value as bearing power, thereby except having above-mentioned effect, the further precision estimated value of computational load power well.
The inverter generator that the third aspect relates to constitutes: detect from the voltage and current of the alternating current of inverter output, according to detected voltage and current, judge whether the load that is connected is the low power factor load, and be judged as under the situation that load is the low power factor load, make output voltage reduce scheduled volume and return to output voltage afterwards gradually, thereby not only has a described effect of first aspect, even when having connected the low power factor load, also can increase can be with the number of specified output starting as far as possible.
Promptly, the alternating electromotive force of being exported is by the product representation of voltage and current (and power factor), yet owing to when starting, make output voltage reduce scheduled volume quickly, return to output voltage afterwards gradually, thereby by scheduled volume being set at suitable amount, for example be set at when when starting, electric current increased the amount that the increase with this electric current matches, thereby can make voltage correspondingly reduce the corresponding amount of electric current of increase when starting.And power factor rises along with current stabilization, and electric current is followed in this and also descended, thereby afterwards by returning to output voltage gradually, can make voltage return to desired value reposefully.
The inverter generator that fourth aspect relates to constitutes: when the effective value of detected electric current surpasses the maximum current scheduled volume and during according to the not enough predetermined value of the power factor that phase difference calculated of detected voltage and current, described low power factor load judgment unit judges is that load is the low power factor load, thereby except having above-mentioned effect, can also judge reliably whether load is the low power factor load that is necessary to limit output voltage.
Description of drawings
Fig. 1 is the block diagram that the inverter generator that the 1st embodiment of the present invention relates to integrally is shown.
Fig. 2 is the oscillogram of the PWM control carried out of explanation CPU shown in Figure 1.
Fig. 3 is the flow chart that the output voltage restriction control and treatment that CPU shown in Figure 1 carries out is shown.
Fig. 4 is the key diagram that is illustrated in the table characteristic of the engine target rotating speed that uses in the processing of flow chart of Fig. 3.
Fig. 5 is the sequential chart of the processing of key diagram 3.
Fig. 6 is the flow chart corresponding with Fig. 3 that the action of the inverter generator that the 2nd embodiment of the present invention relates to is shown.
Fig. 7 is the flow chart that the computing of the output voltage limit amount of carrying out simultaneously with the processing of the flow chart of Fig. 6 is shown.
Fig. 8 is the sequential chart of the processing of key diagram 6 and Fig. 7.
Label declaration
10: inverter generator; 12: engine (internal combustion engine); 12a: air throttle; 12b: throttle motor (actuator); 14: engine power generation portion; 14a: three-phase output winding; 20: current transformer; 26: inverter; 36: electric loading; 40:CPU; 40a: thyristor (SCR) driver; 40b: gate driver; 40c: motor driver; 40d:EEPROM; 40e, 40f: voltage sensor; 40g: current sensor.
Embodiment
Below, accompanying drawings is used to the best mode of the inverter generator implementing the present invention relates to.
[embodiment 1]
Fig. 1 is the block diagram that the inverter generator that the 1st embodiment of the present invention relates to integrally is shown.
In Fig. 1, label 10 expression inverter generators, generator 10 has engine (internal combustion engine) 12, and has 2.6kW (interchange 100V, 26A) the specified output about.Engine 12 is air cooling engines, and is spark ignition type, and its air throttle 12a utilizes throttle motor (actuator) 12b that is made of stepping motor to open and close, and utilizes kick-starter (not illustrating) to start.
Be fixed with circular stator (not illustrating) near the cylinder head of engine 12, what be wound with formation engine power generation portion 14 on this stator 3 exports winding (main winding) 14a and 3 single-phase winding 14b, 14c, 14d mutually by what U phase, V phase, W constituted mutually.
Dispose the rotor (not illustrating) of the flywheel that is also used as engine 12 in the outside of stator, inside at this rotor, to be equipped with manyly, and make these permanent magnets magnetized magnetic pole on diametric(al) replace mutually to permanent magnet (not illustrating) with above-mentioned opposed modes such as winding 14a.
Along with the permanent magnet of rotor rotates around stator, export winding 14a output (sending) 3 phases (U phase, V phase, W phase) alternating electromotive force mutually from 3, and from single-phase output winding 14b, 14c, 14d output single phase alternating current (A.C.) electric power.
The 3 cross streams electric power of exporting (sending) from the output winding 14a of engine power generation portion 14 are imported into control basal plate (printed circuit board) 16 via U, V, W terminal 14e, and are imported into the current transformer 20 of lift-launch on this control basal plate 16.Current transformer 20 has 3 thyristors (SCR) and 3 diode DI that bridge-type connects, and the angle of flow by the control thyristor will be transformed to direct current from the 3 cross streams electricity that engine power generation portion 14 is exported.
The side of the positive electrode of current transformer 20 and the output of negative side and RCC (Ringing ChokeConverter, ring chokes transducer) power supply (DC stable power supply) 22 connects, and the direct current power after the rectification is offered described 3 thyristors as working power.The back level of RCC power supply 22 is connected with smmothing capacitor 24, and this smmothing capacitor 24 is used for level and smooth direct current from current transformer 20 outputs.
The back level of smmothing capacitor 24 is connected with inverter 26.Inverter 26 has by 4 FET (field-effect transistors, switch element) circuit that is formed by connecting of bridge-type, by the control conducting of 4 FET and non-conduction, will be transformed to the alternating current of preset frequency (the specifically commercial frequency of 50Hz or 60Hz) as described later from the direct current that current transformer 20 is exported.
The noise filter 32 that choke 30 that the output of inverter 26 constitutes by the LC filter of being removed usefulness by higher harmonics and noise remove are used is output from lead-out terminal 34, and is freely offered electric loading 36 by connector (not illustrating) etc.
Control basal plate 16 has CPU (Central Processing Unit, CPU) 40.CPU 40 constitutes by 32, and via the angle of flow of the thyristor of thyristor (SCR) driver (drive circuit) 40a control current transformer 20, via the conducting of the FET of gate driver 40b control inverter 26 and non-conduction, and via the action of motor driver 40c control throttle motor 12b.CPU 40 has EEPROM (nonvolatile memory) 40d.
The output of single-phase the 1st output winding 14b is sent to control basal plate 16 via secondary terminal 14b1,14b2, and is imported into control power supply generating unit 14b3, generates the working power 5V of CPU 40 in control power supply generating unit 14b3.The output of secondary terminal 14b1 is sent to NE (rotating speed) testing circuit 14b4, is transformed to pulse signal and is sent to CPU 40 in NE testing circuit 14b4.The output of 40 pairs of NE testing circuits of CPU 14b4 is counted, thus the rotational speed N E of detection of engine 12.
The output of the 2nd output winding 14c is sent to full-wave rectifying circuit 14c1, carries out full-wave rectification and generate the working power of throttle motor 12b etc. in full-wave rectifying circuit 14c1.The output of the 3rd output winding 14d is sent to the firing circuit 12c of engine 12, as the priming supply of spark plug 12d.
And CPU 40 has current sensor 40g, current sensor 40g produce with from the corresponding output of the electric current of inverter 26 outputs (in other words, flowing through the electric current of electric loading 36 when having connected electric loading 36).
The output of current sensor 40g is imported into CPU 40, and is imported into overcurrent limiting device 40h.Overcurrent limiting device 40h is made of the logical circuit that is independent of CPU 40 (hardware circuit), when surpassing the tolerable limit value by the detected electric current of current sensor 40g, overcurrent limiting device 40h stops the output of gate driver 40b, and the output that makes inverter 26 temporarily is zero.
The output of CPU 40 input the 1st, the 2nd voltage sensor 40e, 40f and current sensor 40g is carried out PWM control according to these FET that export inverter 26, and the action of control throttle motor 12b, further limits overcurrent.
Fig. 2 is the oscillogram of the PWM control carried out of explanation CPU 40.
The PWM control of the FET of inverter 26 is described with reference to Fig. 2, CPU 40 according to the preset frequency of target ac output voltage waveform (being illustrated by the broken lines in the bottom) (promptly, commercial frequency 50Hz or 60Hz) baseline sinusoidal wave (signal wave), in comparator (not illustrating), compare with carrier wave (for example carrier wave of 20kHz), according to PWM (Pulse Width Modulation, pulse-width modulation) generate pwm signal (PWM waveform), be the variable pulse train of duty ratio (t/ period T=turn-on time), and it is exported via gate driver 40b.
Lower dotted line among Fig. 2 is represented the target output voltage waveform.In addition, the period T (step-length) of pwm signal (PWM waveform) is much shorter in fact, yet for the ease of understanding, exaggerates illustrating in Fig. 2.
And, CPU 40 determines the aperture of air throttle 12a, to reach the rotating speed of target of determining according to the interchange output of determining by electric loading 36, calculate the A phase and B output pulse mutually of throttle motor 12b, it is offered throttle motor 12b via motor driver 40c from lead-out terminal 40c1, control its action.
Fig. 3 is the flow chart that the action of CPU 40 is shown.Illustrated program is to carry out with each control cycle (step-length) of being determined by carrier frequency, and more particularly when the frequency setting of target output voltage waveform during for 50Hz for example, per 50 μ sec execution once.
Below describe, in S10,, detect from the voltage and current (when having connected electric loading 36, flowing through the electric current of electric loading 36) of the alternating current of inverter 26 outputs according to the output of the 2nd voltage sensor 40f and current sensor 40g.
Enter S12 then, calculate the phase difference θ of detected voltage and current, enter S14, according to the phase difference calculating power factor cos θ that calculates.
Enter S16 then, calculate and estimate bearing power (estimated value of bearing power).Estimate that bearing power is by calculating with following formula.
Estimate bearing power=rated output voltage (V) * detection electric current (A) * power factor (cos θ)
In above-mentioned, rated output voltage is to exchange 100 (V).
Enter S18 then, determine the rotating speed of target of engine 12 according to the estimation bearing power that calculates.More particularly, retrieve the tabular value of its characteristic shown in Fig. 4 according to the estimation bearing power that calculates, and determine the engine target rotating speed.
Enter S20 then, the action of control throttle motor 12b is to reach determined engine target rotating speed.More particularly, FEEDBACK CONTROL is carried out in the action of throttle motor 12b, so that reach the engine target rotating speed by the detected engine speed of NE testing circuit 14b4.
Fig. 5 is the sequential chart of the processing of key diagram 3.
Illustrated example is that load is the situation of mercury vapor lamp.Because mercury vapor lamp power factor before current stabilization low (for example being 0.3), thus also little by the work done of the engine 12 of the product representation of voltage, electric current and power factor, so engine speed is just enough with the slow-speed of revolution at first.Follow the electric current that offers load to reduce in time then, power factor rises gradually to 1.0.
Constitute in the present embodiment: comprise power factor interior when calculating the estimation bearing power, determine the engine target rotating speed based on this, and be controlled to be this engine target rotating speed, thereby as shown in Figure 5, engine speed is increased and decreased with power factor with being directly proportional, can improve the response of engine speed control thus.
And, because the estimated value of computational load power also comprises power factor interior, thus low and when being 0.3, engine speed also is controlled as lower value when power factor.In other words, owing to engine speed is unnecessarily risen, thereby can improve the fuel consumption performance.
[embodiment 2]
Fig. 6 is the action that the inverter generator that the 2nd embodiment of the present invention relates to is shown, the more particularly flow chart of the action of its CPU 40.Illustrated program also is to be carried out by each control cycle (step-length) of carrier frequency regulation.
Below describe, the same with the 1st embodiment, in S100, detect from the voltage and current of the alternating current of inverter 26 outputs, in S102, calculate the phase difference θ of detected voltage and current, in S104, come rated output factor cos θ according to the phase difference that calculates.
Enter S106 then, read output voltage limit amount α.This output voltage limit amount α is calculated as negative value in the processing of carrying out simultaneously with the flow chart of Fig. 6.The back is described this.
Enter S108 then, judge whether the output voltage limit amount α that is read is zero, when entering S110 when negating, make the output voltage that under the illustrated PWM control of reference Fig. 2, calculates add output voltage limit amount α (negative value), thereby reduce output voltage and proofread and correct.That is, pwm signal being proofreaied and correct, is the waveform of the output voltage that calculates so that make the target output voltage waveform in the illustrated PWM of reference Fig. 2 control.
On the other hand, when being sure, enter S112 in S108, the output voltage that calculates is defined as output voltage same as before.
Fig. 7 is the flow chart that the computing of above-mentioned output voltage limit amount α is shown.Illustrated program is to carry out with the cycle longer than the flow chart of Fig. 6, carries out once for for example per 8 milliseconds.In addition, be that example is as the low power factor load below with the mercury vapor lamp.
Below describe, whether the position of judgement symbol F is set to 1 in S200, because the initial value of the position of this sign F is 0, thereby in initial program cycle, make certainly and negate and enter S202, whether the effective value of judging detected electric current is 108% (scheduled volume) of the predetermined maximum current of inverter generator 10, promptly is more than 1.08 times the value of maximum current.In addition, this scheduled volume is set to than the low value of using in overcurrent limiting device 40h of tolerable limit value.
When being negative, skip later processing in S202, and when entering S204 for certainly the time, judge whether less than 0.5 (predetermined value) and judge whether according to the phase difference that calculates be the phase (current ratio voltage delay) that stagnates in the flow chart of Fig. 6 of the power factor that in the flow chart of Fig. 6, calculates.
When being negative, skip later processing in S204, and when entering S206 for certainly the time, be judged as load (electric loading) the 36th, mercury vapor lamp (low power factor load), described output voltage limit amount α is set at-10 (%, scheduled volume), enter S208, the described position of F that indicates is set at 1, temporary transient termination routine.
Therefore, in next time later program cycle, in S200, enter S210 for affirming, judge whether the effective value of detected electric current remains more than 108% of predetermined maximum current of inverter generator 10, when being sure, enter S212, judge whether the effective value of detected electric current is 2 (A: ampere).2 (A) are meant predetermined minimum current in above-mentioned output voltage restriction control.
When in S212, entering S214 for certainly the time, make α add 1/256 (%, on the occasion of), thereby being carried out subtraction, proofreaies and correct α.In addition, when enter S216 when negating in S210, making output voltage limit amount α is zero, enters S218, and the position of sign F is set at 0 and termination routine.When being negative in S212, also be the same.
Fig. 8 is the sequential chart of the processing of key diagram 6 and Fig. 7.
Utilizing this output voltage limit amount α to reduce output voltage according to output voltage in the processing of the flow chart of Fig. 6 proofreaies and correct, yet in handling, this during initial 8 milliseconds (msec '), in PWM control shown in Figure 2, make output voltage reduce α, promptly reduce 10%.
When passing through after initial 8 milliseconds, every through 8 milliseconds, α just makes-10 (%) add that 1/256 (%) reduces to proofread and correct gradually, continues to deduct from output voltage this value.
Promptly, from the alternating electromotive force of inverter generator 10 output product representation by voltage and current (and power factor), yet when starting, make output voltage reduce 10% of output voltage limit amount α quickly, decrease is increased with each 1/256, thereby return to the output voltage of expectation gradually.
As can be seen from Figure 8, output voltage is limited by above-mentioned, and corresponding to this, the electric current that offers electric loading 36 reduces in time.Like this, output voltage limit amount α obtains by experiment and sets the value that reaches the amount that matches with the electric current that increases in when starting in the present embodiment, by output voltage limit amount α being set at the amount that matches with the electric current that increases like this, voltage is reduced and the corresponding amount of electric current that increases when starting.
Then, power factor rises along with current stabilization, follows in this electric current also to descend, thereby afterwards by returning to output voltage gradually, can make voltage return to desired value reposefully.
In addition, engine speed NE mercury vapor lamp starting and power factor low during lower, and along with power factor rises and near 1.0, the requirement of engine 12 is then increased, thereby engine speed NE rises, constant afterwards.
As mentioned above, the inverter generator 10 that relates in the 1st embodiment has: engine 12, and it has the air throttle 12a that is opened and closed by actuator (throttle motor) 12b; Power Generation Section 14, it is driven by described engine 12; Current transformer 20, it will be transformed to direct current from the alternating current of described Power Generation Section output; Inverter 26, it has switch element (FET), and will be transformed to alternating current and output to load from the direct current of described current transformer 20 outputs; And actuator controlling unit (CPU40), it controls the action of described actuator 12b, described inverter generator 10 constitutes it to have: electric current and voltage detecting unit (voltage sensor 40f, current sensor 40g, CPU 40, S10), it detects from the voltage and current of the alternating current of described inverter output; Power factor is calculated unit (CPU 40, S12, S14), and it comes rated output factor cos θ according to described detected voltage and current; (CPU 40, and S16), it calculates the estimated value (estimation bearing power) of the bearing power that offers described load at least according to described detected electric current and the described power factor cos θ that calculates for bearing power estimated value computing unit; And the rotating speed of target determining unit (CPU 40, S18), it determines the rotating speed of target of described engine 12 according to the estimated value of the described bearing power that calculates, and, described actuator controlling unit is controlled the action of described actuator to reach described definite rotating speed of target, thereby in other words, by replacing and according to the estimated value of computational load power such as power factor according to the on-state rate of the thyristor of current transformer 20, even underload etc. also can precision the estimated value of computational load power well, and control actuator 12b, thereby can improve the response of engine speed control according to this estimated value calculation engine rotating speed of target.And, owing to comprise the estimated value of power factor at interior computational load power, thereby engine speed is unnecessarily risen, can improve the fuel cost performance.
And inverter generator constitutes: described bearing power estimated value computing unit multiplies each other described detected electric current, the described power factor that calculates and rated output voltage, and with its long-pending estimated value as described bearing power.Thereby except having above-mentioned effect, the further precision estimated value of computational load power well.
And, in the 2nd embodiment, inverter generator constitutes: described inverter generator also has: low power factor load judgment unit (CPU 40, S200 to S206), it judges according to described detected voltage and current whether the load that is connected is the low power factor load; And the inverter driving moving cell (CPU 40, S18 to S22), it drives described switch element according to the pwm signal that the baseline sinusoidal wave and the carrier wave of use target output voltage waveform generate, to be transformed to the alternating current of preset frequency from the alternating current of described inverter output, and be under the situation of low power factor load in the load that is judged as described connection, make output voltage reduce scheduled volume and return to described output voltage afterwards gradually, even thereby when having connected low power factor load such as mercury vapor lamp, also can increase can be with the number of specified output starting as far as possible.
Promptly, the alternating electromotive force of being exported is by the product representation of voltage and current (and power factor), yet owing to when starting, make output voltage reduce scheduled volume quickly, return to output voltage afterwards gradually, thereby by scheduled volume being set at suitable amount, for example be set at when when starting, electric current increased the amount that the increase with this electric current matches, thus the corresponding amount of electric current of increase can make voltage correspondingly reduce the time with starting.And power factor rises along with current stabilization, and electric current is followed in this and also descended, thereby afterwards by returning to output voltage gradually, can make voltage return to desired value reposefully.
And, inverter generator constitutes: when the effective value of described detected electric current surpasses maximum current scheduled volume (108%) and during according to the not enough predetermined value of the power factor that phase difference calculated (0.5) of described detected voltage and current, described low power factor load judgment unit judges is that described load is that (CPU 40 in the low power factor load, S100 to S106), thereby except having above-mentioned effect, can also judge reliably whether load is the low power factor load that is necessary to limit output voltage.
In addition, above-mentioned in, enumerated mercury vapor lamp as the example of low power factor load, yet be not limited thereto, so long as the big load of impulse current during the bad and starting of power factor before current stabilization like that such as refrigerator, cooler, pump, which kind of can.
And, used FET as the switch element of inverter, yet be not limited thereto, can be IGBT (insulated gate bipolar transistor, insulated gate bipolar transistor) etc.
Claims (4)
1. inverter generator, this inverter generator has: engine, it has the air throttle that is opened and closed by actuator; The Power Generation Section, it is by described motor driven; Current transformer, it will be transformed to direct current from the alternating current of described Power Generation Section output; Inverter, it has switch element, and will be transformed to alternating current and output to load from the direct current of described current transformer output; And actuator controlling unit, it controls the action of described actuator, and described inverter generator is characterised in that,
Described inverter generator has:
The electric current and voltage detecting unit, it detects from the voltage and current of the alternating current of described inverter output;
Power factor is calculated the unit, and it comes the rated output factor according to described detected voltage and current;
Bearing power estimated value computing unit, it calculates the estimated value of the bearing power that offers described load at least according to described detected electric current and the described power factor that calculates; And
The rotating speed of target determining unit, it determines the rotating speed of target of described engine according to the estimated value of the described bearing power that calculates, and,
Described actuator controlling unit is controlled the action of described actuator to reach described definite rotating speed of target.
2. inverter generator according to claim 1 is characterized in that,
Described bearing power estimated value computing unit multiplies each other described detected electric current, the described power factor that calculates and rated output voltage, and with its long-pending estimated value as described bearing power.
3. inverter generator according to claim 1 and 2 is characterized in that,
Described inverter generator also has:
Low power factor load judgment unit, it judges according to described detected voltage and current whether the load that is connected is the low power factor load; And
The inverter driving moving cell, it drives described switch element according to pwm signal, to be transformed to the alternating current of preset frequency from the alternating current of described inverter output, and be under the situation of low power factor load in the load that is judged as described connection, make output voltage reduce to return to described output voltage gradually after the scheduled volume, wherein pwm signal is to use the baseline sinusoidal wave of target output voltage waveform and carrier wave to generate.
4. inverter generator according to claim 3 is characterized in that,
When the effective value of described detected electric current surpasses the maximum current scheduled volume and during according to the not enough predetermined value of the power factor that phase difference calculated of described detected voltage and current, described low power factor load judgment unit judges is that described load is the low power factor load.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-191782 | 2008-07-25 | ||
| JP2008-191783 | 2008-07-25 | ||
| JP2008191782 | 2008-07-25 | ||
| JP2008191783A JP5130143B2 (en) | 2008-07-25 | 2008-07-25 | Inverter generator |
| JP2008191782A JP5130142B2 (en) | 2008-07-25 | 2008-07-25 | Inverter generator |
| JP2008191783 | 2008-07-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101635556A true CN101635556A (en) | 2010-01-27 |
| CN101635556B CN101635556B (en) | 2012-07-04 |
Family
ID=41594641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101403738A Active CN101635556B (en) | 2008-07-25 | 2009-07-17 | Inverter generator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5130142B2 (en) |
| CN (1) | CN101635556B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969962A (en) * | 2011-09-01 | 2013-03-13 | 利莱森玛电机公司 | System for adjusting output voltage of alternating-current generator of generator set |
| CN105074156A (en) * | 2013-02-22 | 2015-11-18 | 三菱重工汽车空调系统株式会社 | Cooling fan motor/inverter system for vehicles and control method and program therefor |
| CN105656319A (en) * | 2016-02-04 | 2016-06-08 | 浙江雷亚电子有限公司 | Inverter controller based on measurement and control of power factors of output circuit |
| CN106877367A (en) * | 2017-03-09 | 2017-06-20 | 山东大学 | The control method of energy accumulation device for fly wheel depth of discharge is improved under micro-capacitance sensor |
| CN108448962A (en) * | 2018-03-09 | 2018-08-24 | 施程峰 | A kind of the feedback driving method and system of stable motor speed |
| CN108899916A (en) * | 2018-07-04 | 2018-11-27 | 哈尔滨理工大学 | A kind of diesel generating set of comprehensive high-efficiency |
| CN110249521A (en) * | 2017-02-06 | 2019-09-17 | 雅马哈发动机动力产品株式会社 | Inverter generator and its control method |
| CN111771331A (en) * | 2017-12-26 | 2020-10-13 | 伊顿智能动力有限公司 | System and method for compact motor control with redundant power architecture |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3425342B2 (en) * | 1997-10-06 | 2003-07-14 | 本田技研工業株式会社 | Portable power supply |
| JP3540152B2 (en) * | 1998-04-17 | 2004-07-07 | 本田技研工業株式会社 | Engine driven generator |
| US6844706B2 (en) * | 2002-08-30 | 2005-01-18 | Active Power, Inc. | Multiple path variable speed constant frequency device having automatic power path selection capability |
| US6879053B1 (en) * | 2002-10-22 | 2005-04-12 | Youtility, Inc. | Transformerless, load adaptive speed controller |
| US7573145B2 (en) * | 2006-11-16 | 2009-08-11 | Cummins Power Generation Ip, Inc. | Electric power generation system controlled to reduce perception of operational changes |
-
2008
- 2008-07-25 JP JP2008191782A patent/JP5130142B2/en active Active
-
2009
- 2009-07-17 CN CN2009101403738A patent/CN101635556B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969962B (en) * | 2011-09-01 | 2017-03-01 | 利莱森玛电机公司 | The method and system of the output voltage of the alternating current generator of regulator generator group |
| CN102969962A (en) * | 2011-09-01 | 2013-03-13 | 利莱森玛电机公司 | System for adjusting output voltage of alternating-current generator of generator set |
| US10050577B2 (en) | 2013-02-22 | 2018-08-14 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Vehicle cooling-fan motor/inverter system, control method therefor, and program therefor |
| CN105074156B (en) * | 2013-02-22 | 2018-06-01 | 三菱重工汽车空调系统株式会社 | The inverter system and its control method and system of vehicle motor for cooling fan |
| CN105074156A (en) * | 2013-02-22 | 2015-11-18 | 三菱重工汽车空调系统株式会社 | Cooling fan motor/inverter system for vehicles and control method and program therefor |
| CN105656319A (en) * | 2016-02-04 | 2016-06-08 | 浙江雷亚电子有限公司 | Inverter controller based on measurement and control of power factors of output circuit |
| CN110249521A (en) * | 2017-02-06 | 2019-09-17 | 雅马哈发动机动力产品株式会社 | Inverter generator and its control method |
| CN110249521B (en) * | 2017-02-06 | 2023-01-03 | 雅马哈发动机动力产品株式会社 | Inverter generator and control method thereof |
| CN106877367A (en) * | 2017-03-09 | 2017-06-20 | 山东大学 | The control method of energy accumulation device for fly wheel depth of discharge is improved under micro-capacitance sensor |
| CN106877367B (en) * | 2017-03-09 | 2019-06-11 | 山东大学 | The control method of energy accumulation device for fly wheel depth of discharge is improved under micro-capacitance sensor |
| CN111771331A (en) * | 2017-12-26 | 2020-10-13 | 伊顿智能动力有限公司 | System and method for compact motor control with redundant power architecture |
| CN108448962A (en) * | 2018-03-09 | 2018-08-24 | 施程峰 | A kind of the feedback driving method and system of stable motor speed |
| CN108899916A (en) * | 2018-07-04 | 2018-11-27 | 哈尔滨理工大学 | A kind of diesel generating set of comprehensive high-efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010035261A (en) | 2010-02-12 |
| JP5130142B2 (en) | 2013-01-30 |
| CN101635556B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101635558B (en) | Inverter generator | |
| CN101635556B (en) | Inverter generator | |
| CN101635557B (en) | Inverter generator | |
| CN101635559B (en) | Inverter generator | |
| US5648705A (en) | Motor vehicle alternator and methods of operation | |
| CN101634254B (en) | Inverter generator | |
| JP4359760B2 (en) | Power generator with magnet generator | |
| CA2672832C (en) | Speed controlled inverter generator | |
| CN105874189B (en) | Engine unit and vehicle | |
| CN1206797C (en) | Engine power generation device | |
| CN109995304A (en) | A method of switched reluctance machines noise is reduced based on PWM carrier frequency is adjusted | |
| US20120091973A1 (en) | Vehicle-use electric rotating machine | |
| Klein-Hessling et al. | Active source current filtering to minimize the DC-link capacitor in switched reluctance drives | |
| JP5130143B2 (en) | Inverter generator | |
| CN113890396A (en) | Power generation voltage regulating system and output voltage control method, equipment and medium thereof | |
| CN101807810B (en) | Generating power supply device | |
| Pennatini et al. | AC series voltage regulator for permanent magnet generators | |
| JP5441951B2 (en) | Rotating electric machine | |
| WO2019159632A1 (en) | Inverter electricity generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |