CN1670452A - Gas heat pump type air conditioner - Google Patents
Gas heat pump type air conditioner Download PDFInfo
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- CN1670452A CN1670452A CNA2005100558748A CN200510055874A CN1670452A CN 1670452 A CN1670452 A CN 1670452A CN A2005100558748 A CNA2005100558748 A CN A2005100558748A CN 200510055874 A CN200510055874 A CN 200510055874A CN 1670452 A CN1670452 A CN 1670452A
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- power supply
- air conditioner
- transducer
- heat pump
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Inverter Devices (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
This inention provides an air conditioner with power generation function having high power generation efficiency. This gas heat pump type air conditioner has a compressor 13 driven by a gas engine, a first blower 16 which is electric auxiliary machinery, an outdoor unit provided with a cooling water pump 21 and installed outdoors, and second blowers 33, 34 which are indoor units installed indoors. It has a synchronous motor 52 driven by the gas engine, a PWM converter 50 controlling the synchronous motor by regeneration to obtain direct current electric power, a converter 40 for rectifying and smoothing two or three phase alternate current commercial power supply to obtain direct current electric power, and a PWM converter 70 which is a control means for supplying electric power obtained by the PWM converter 50 as power supply of the electric auxiliary machinery in the outdoor unit or the indoor unit while detecting direct current electric power obtained by the converter 40.
Description
Technical field
The present invention relates to come the gas heat pump type air conditioner of Driven Compressor, be specifically related to the invention of the gas heat pump type air conditioner that the surplus energy with gas engine generates electricity by gas engine.
Technical background
In the past, coming by gas engine in the gas-fired heat pump of Driven Compressor, be well known that the surplus energy with gas engine drove alternating current generator, producing the gas heat pump type air conditioner of AC power.
For example, patent documentation 1 discloses the Blast Furnace Top Gas Recovery Turbine Unit (TRT) that has by the generator that gas engine drives, output AC is exported of Driven Compressor.Blast Furnace Top Gas Recovery Turbine Unit (TRT) also have the AC power from generator output be converted to dc electric power the AC/DC transducer and the dc electric power that converts to this AC/DC transducer be converted to assigned frequency AC power, offer the DC/AC transducer of electric equipment.
, why carrying out AC/DC conversion, DC/AC conversion herein, is that engine revolution will change owing to the load change along with gas-fired heat pump, and the output frequency of generating and output voltage will change, so will be converted into the setting of source power supply.The setting that is converted to source power supply is to carry out interconnection in order to make it possible to source power supply.
[patent documentation 1] spy opens the 2001-324240 communique
Summary of the invention
The problem that invention will solve
Yet there is following problem points in former gas heat pump type air conditioner.
(1) in the invention of patent documentation 1 record, in order to carry out interconnection with source power supply, the 2nd transducer must have isosynchronous synchronizing function of electric mode, voltage, frequency and the protective device with source power supply, the problem that exists cost to improve.
(2) in the invention of patent documentation 1 record, when having the gas engine starting, the output loading of gas engine becomes big problem.
(3) in the invention of patent documentation 1 record, control through the setting voltage that the direct voltage of AC/DC conversion gained becomes regulation for making the generating electrical power.It is 0 magnitude of voltage that DC voltage level generally is set at from the influx that exchanges source power supply.Exchanging source power supply is 202 positive and negative 20V, thereby the direct voltage that the AC/DC conversion equipment is set must be set at ratio
High value.Usually be set at 320V by this condition.
, on average, be set at ratio
High value gets final product, and 320V is that to exchange in all cases that source power supply flows into all be 0 magnitude of voltage.Yet the missionary society of (320-286) V that makes comparisons with mean value makes the generating efficiency variation.
Its reason is copper loss=armature winding resistance * (armature supply) of motor
2, the iron loss of motor=(induced voltage)
2/ iron loss resistance of equal value, so, the voltage height, the iron loss of motor will rise.Also have, the device that is used for switching and the loss of other parts also can increase.
As mentioned above, in the past, because direct voltage is controlled at certain value, thereby the problem that exists average loss to increase.
Therefore, the objective of the invention is to solve above problem, the aircondition of the high band electricity generate function of generating efficiency is provided.
Be used to solve the device of problem
Gas heat pump type air conditioner of the present invention in order to solve above-mentioned problem, has following formation.
(1) a kind of gas heat pump type air conditioner, comprise and be arranged on outdoor off-premises station and be arranged on indoor indoor set, above-mentioned off-premises station has by gas-engine-driven compressor and electric auxiliary machinery, above-mentioned gas heat pump type air conditioner have by gas-engine-driven syncmotor and to syncmotor regenerate control, obtain the PWM transducer of dc electric power, providing with the electrical power of PWM transducer acquisition power supply as electric auxiliary machinery in the off-premises station or indoor set.
(2) in the gas heat pump type air conditioner of (1) record, it is characterized in that, also have transducer single-phase or that the three-phase alternating current source power supply carries out rectification, consumption of electric power for electric auxiliary machinery in the above-mentioned off-premises station or above-mentioned indoor set, when the electrical power that obtains with the said PWM transducer is not enough, just replenish the accident electrical power from source power supply by above-mentioned transducer, and when the electrical power that obtains with the said PWM transducer surpassed consumption of electric power, just the direct voltage of above-mentioned dc electric power being controlled at from the inflow current of source power supply was 0 minimum voltage.
(3) in the gas heat pump type air conditioner of (1) record, it is characterized in that, make above-mentioned syncmotor carry out the power running control device of power running thereby have the said PWM transducer controlled to use from above-mentioned electrical power single-phase or three-phase alternating current source power supply side inflow as the PWM inverter.
The effect of invention
Gas heat pump type air conditioner of the present invention has following action effect.
The gas engine of Driven Compressor has the unnecessary ability with respect to necessary air-conditioning ability, is generated electricity by the unnecessary ability of gas engine.
Gas engine is rotated driving to the rotating shaft of the syncmotor of generating usefulness.The PWM transducer obtains dc electric power to the syncmotor control of regenerating.This dc electric power is provided as the electric auxiliary machinery of off-premises station or the power supply of indoor set, thereby play the generating effect.The present invention adopts and can carry out optimally-controlled PWM transducer to the high efficiency syncmotor that permanent magnet is housed and control, thereby realizes more high efficiency generating.
Also have; because do not make the AC power that obtains by the PWM transducer and exchange source power supply and carry out interconnection; but its power supply as electric auxiliary machinery in the off-premises station of gas-fired heat pump or indoor set is provided; so not only reduced film sound to the external electrical equipment that drives with the interchange source power supply; and can remove from be used for interconnection make voltage and isosynchronous synchronizing function of frequency and protective device, can reduce cost.In addition, in this case, the dc electric power that obtains with the PWM transducer can be converted to AC power by load inverter etc., offers electric auxiliary machinery etc.
Also have, when current sensing means detects from the inflow current of interchange source power supply, just control the direct voltage of the dc electric power of PWM transducer generation, this inflow current is reduced, become 0, thereby can obtain be to drive electric auxiliary machinery in the off-premises station of gas-fired heat pump or the voltage of indoor set bottom line necessity, so especially can reduce the iron loss of motor, can also reduce the device that switches usefulness and the loss of other parts.Therefore, the situation that is controlled at certain value with former direct voltage is compared, and above-mentioned loss is reduced.
Also have, above-mentioned syncmotor is carried out the power running control device of power running, so the output loading of gas engine can be reduced in gas engine and start the time owing to have thereby the PWM transducer controlled with the electric current of going into business with mains side inflow as the PWM inverter.Herein, syncmotor is because the starting torque height is suitable as the starter motor that requires high output torque under the low speed, so can improve the starting stability of gas engine.
Description of drawings
Fig. 1 is the pie graph of gas heat pump type air conditioner.
Fig. 2 is the system block diagram of the formation of expression electrical system.
Fig. 3 is basic vector figure.
Fig. 4 is the Current Vector Control system diagram.
Fig. 5 is the figure of the critical value of expression engine output.
Sequential chart when Fig. 6 is starting.
Fig. 7 is the sequential chart when stopping.
Embodiment
A following embodiment with reference to description of drawings gas heat pump type air conditioner of the present invention.Fig. 1 is the pie graph of the gas heat pump type air conditioner of present embodiment.
The gas heat pump type air conditioner constitutes by off-premises station 10, indoor set 30 and to the refrigerant cycle path 1 that off-premises station 10 and indoor set circulate.
Off-premises station 10 has the gas engine 11 that is used for Driven Compressor 13A, B, the outdoor heat converter 14 that separates the storage heater 12 of gaseous refrigerant and liquid refrigerant and carry out the heat exchange of cold-producing medium for air-conditioning fully.Gas engine 11 is connected with syncmotor 52 as generator.
Indoor set 30 has the indoor heat converter 31 and the expansion valve 32 that cold-producing medium is expanded that carries out heat exchange with room air and cold-producing medium.
Compressor 13 sucks gaseous refrigerant, discharges the gaseous refrigerant of high pressure.
Secondly, the effect when illustrating to indoor refrigeration.Drive gas engine 11 by fuel gas, Driven Compressor 13A, 13B.Compressor 13A, 13B suck, the gaseous refrigerant of compression storage heater 12, and it is discharged as the gas of high-temperature high-pressure state.The gaseous refrigerant of discharging separates fuel-displaced in separator 19 from cold-producing medium.Separated oily cold-producing medium, by four-way valve 17 inflow outdoor heat exchangers 14.
The gaseous refrigerant of HTHP is liquefied by outdoor heat converter 14 coolings.The cold-producing medium that has liquefied is via Filter dryer 22, ball valve 23, coarse filter 31n, expands in expansion valve 32 and becomes low temperature.
Become refrigerant of low temperature and arrive indoor heat converter 31, room air is cooled off through coarse filter 31m.Then, cold-producing medium returns storage heater 12 through double pipe heat exchanger 18.Cold-producing medium is deposited with the state that is separated into liquid refrigerant and gaseous refrigerant in storage heater 12.
Secondly, the effect when illustrating to indoor heating.Drive gas engine 11 by fuel gas, thus Driven Compressor 13A, 13B.Compressor 13A, 13B suck, the gaseous refrigerant of compression storage heater 12, and it is discharged as the gas of high-temperature high-pressure state.The gaseous refrigerant of discharging separates fuel-displaced in separator 19 from cold-producing medium.Separated oily cold-producing medium, by four-way valve 17 inflow indoor heat exchangers 31.The cold-producing medium of HTHP heats at 31 pairs of room airs of indoor heat converter.
Then, cold-producing medium expands in expansion valve 32 through coarse filter 31m, via ball valve 23, Filter dryer 22, arrives outdoor heat converter 14.Then, through four-way valve 17, double pipe heat exchanger 18, return storage heater 12.
The syncmotor 52 that is connected with gas engine 11 generates electricity when gas engine 11 has surplus energy.
In the gas heat pump type air conditioner of present embodiment,, be provided with the 1st forced draft fan 16 to outdoor heat exchanger 14 air-supplies, the cooling water pump 21 of cooling gas engine 11 as the subsidiary engine in the off-premises station.Also have,, be provided with the 2nd forced draft fan 33,34 indoor heat converter 31 air-supplies as indoor set.
Except above-mentioned subsidiary engine, also have other motor and electromagnetically operated valve, off-premises station to change and use motor with the wind direction board of control basal plate, used for indoor machine control basal plate, indoor set 30.
Secondly, the formation of electrical system as block representation in Fig. 2.
Gas engine 11 is connected with syncmotor 52 as generator.Article 3, alternating current wires 53 is connected to generating PWM transducer 50 from syncmotor 52.The current transitions device 51 that is used to detect current value has been installed on 2 in 3 of alternating current wires.Draw 2 direct current electric wires 54 from generating PWM transducer 50.
On the other hand, exchanging source power supply 41 is input in the transducer 40.Transducer is made of 6 diodes 42 and electrochemical capacitor 44.Current sensor 43 has been installed on the electric wire.
The direct current electric wire 54 of drawing from generating PWM transducer 50 is connected with 2 direct current electric wires of drawing from transducer 40 respectively, is connected to load inverter 60.Load current sensor 55 has been installed on the direct current electric wire.Load inverter 60 is connected with subsidiary engines 90 such as motors.
The microcomputer that is used to control generating PWM transducer 50 is a PWM converter control device 70, is connected with current transitions device 51, current sensor 43, dc voltage detector 45, load current sensor 55.
Motor controller 80 is connected with load inverter 60.
Fig. 3 represents basic vector figure with the dq line chart.Several 1 expression voltage equations.
[several 1]
υ d, υ q are d, the q axle compositions of armature voltage.Id, iq are d, the q axle compositions of armature supply.Ra is an armature winding resistance.Ld, Lq are d, q axle inductance.P is the symbol (P=d/dt) of differentiating.ω is the armature angular speed of syncmotor 52.Ψ a is the armature interlinkage flux of permanent magnet.
Secondly, control is illustrated among Fig. 4 as the Current Vector Control system diagram.Direct voltage Optimal Control 64 is connected with torque calculation portion 63 and vector current control algolithm 65.Torque calculation portion 63 is with vector current control algolithm 65 and infer algorithm 66 and be connected.
Generating PWM transducer 50 is according to moving as the direct voltage Optimal Control of the 1st operation mode or as arbitrary control that the export-restriction of the 2nd operation mode is controlled.The direct voltage Optimal Control is used for providing load inverter 60 necessary full electrical power from syncmotor 52.And export-restriction control is used for providing necessary electrical power from syncmotor 52 and source power supply 41 are collaborative.
Explanation is as the direct voltage Optimal Control of the 1st operation mode earlier.
Input commercial electric current inflow value I0 (n), direct voltage measured value Vdc (n), direct voltage instruction initial value Vdc (0) in the direct voltage Optimal Control 64.Herein, direct voltage is necessary for more than the DC282V, is the effective value of AC200V so that make the voltage that is applied in the load.
Method as realizing this point has 3 kinds of methods.The 1st method is normal method for monitoring, and making from the inflow current of source power supply is 0.
The 2nd method is: during 50 startings of generating PWM transducer, be 0 for making from the inflow current of source power supply, with the degree of 1V/ second voltage risen to direct voltage, it is worth constant control, after this, if inflow current from source power supply is arranged, just with the degree of 1V/ second voltage is risen equally.In this case, be necessary for more than the DC282V.
The 3rd method is: in generating PWM transducer 50 halted states in when starting, the direct voltage when detecting full load and stopping to add voltage behind 5～6V with its constant being controlled to this value.That is,, measure voltage, this value is added 5～6V from source power supply in syncmotor 52 halted states.
The 3rd method does not need unnecessary transducer, thereby is the best approach.
Adopt above-mentioned arbitrary method, from direct voltage Optimal Control 64 output dc voltage command value Vdc
*
Secondly, torque calculation portion 63 is described.In the torque calculation portion 63 by direct voltage Optimal Control 64 input direct voltage command value Vdc
*, go back the direct current measured value Idc (n) of input load side.Also have, by the rotor velocity ω m (n) that infers algorithm 66 input syncmotors 52.According to these values, with the several 2 taking-up output P (M) that calculate from syncmotor 52.
[several 2]
P(M)
*＝Vdc
*·Idc(n)
Idc (n) is the direct current measured value of load-side, and (n) sampling value is constantly handled in expression.
The output P (M) of syncmotor 52 as described later, for example, when summer air-conditioning is big with the load of compressor, just has the possibility of export-restriction often.That is, the taking-up electrical power from generator is not being added under the situation of restriction, just becoming " from the total necessary electrical power of taking-up electrical power=load-side motor of syncmotor ".On the other hand, if the taking-up electrical power from generator is limited, just become " from the taking-up electrical power of syncmotor+" from the total necessary electrical power of electrical power=load-side motor of source power supply.
Secondly, obtain the formula that iq is represented as the function of id with several 3, with it as Iq
*Output.
[several 3]
T
*＝Pn{Ψa·iq+(Ld-Lq)·id·iq}
Herein, T
*It is torque.Pn is a number of pole-pairs.Ψ a is an induced voltage, is constant.(Ld-Lq) be fixed value.
Often adding the restriction of the critical current Ia of the syncmotor 52 shown in several 4 from the output current of syncmotor 52.
[several 4]
Herein, Ie is the phase current effective value.A, b are the coefficients that motor characteristics determined by syncmotor 52.That is, overheated in order to prevent syncmotor 52, the output current from syncmotor 52 has been added restriction.
The meaning of [several 4] is, square root sum square (id of the id of gained and iq
2+ iq
2) ratio
When big, according to
The Ia of decision decides id, iq.
That is,, just be judged as and satisfy several 5, several condition of 2, several 3 and do not exist, become the state that has added export-restriction equally if the id, the iq that calculate according to the necessary electrical power of load-side surpass the limits value as the syncmotor 52 of generator.
Herein, obtain from several 5 and several 4 simultaneous equations.
Only have generator that the load-side gross electric capacity can not be provided,, obtain electrical power, thereby several 5 Vdc is identical with export-restriction control, is Vdc from source power supply so reduce direct voltage
*=Vdc (n).
Secondly, vector current control algolithm 65 is described.In the vector current control algolithm 65, by direct voltage Optimal Control 64 input direct voltage command value Vdc
*Also have, by torque calculation portion 63 input Iq
*Also have, by the rotor velocity ω m (n) that infers algorithm 66 input syncmotors 52.
Vector current control algolithm 65 is asked id according to several 5.
[several 5]
(Vdc
*)
2/2＝(Va)
2＝(Ra·id-ω·Lq·iq)
2+(Ra·iq+ω·Ld·id+ω·Ψa)
2
Herein, Vdc
*Be the direct voltage command value, be Vdc (I0=0).Also have, Vdc (0) is a direct voltage instruction initial value, is 282V in the present embodiment.Also have, I0 (n) is a source power supply inflow current measured value, (n) is to handle sampling value constantly.
Vdc
*If initial value is 282V, according to the form of the deviation addition of the desired value of I0 (n), make I0 (n)=0, carry out PI control.Get Vdc herein,
*=282～320V.
Secondly, the optimally-controlled concrete steps of direct voltage are described.
(a) be set at Vdc (0)=282V (initial value).
(b) survey I0 (n) with 1 second interval.
When (c) I0 (n) is bigger than 0, Vdc is risen 1 volt.
(d) repeat (b) and (c), the Vdc that is to I0 (n) at 0 o'clock is as direct voltage command value Vdc
*
Vdc
*＝Vdc(I0(n)＝0)
(e) according to the Vdc that obtains
*The direct voltage measured value Idc (n) that requires with load-side calculates the electrical power P (M) of having taken out by several 2
*
(f) according to the angular velocity omega and the P (M) of syncmotor 52
*, calculating torque T
*
T
*＝P(M)
*/ω
(g) in several 5 and several 3, the Vdc that substitution obtains
*, ω and other constant, thereby make the simultaneous equations of id and iq, obtain id and iq in view of the above.
In (e), compare Vdc herein,
*Idc (n) and P (M) Lim.Comparative result is Vdc
*During the Lim of Idc (n) P＞(M), just add the motor export-restriction.In this case, Vdc
*Be measured value (the actual necessary magnitude of voltage of load-side).
Also have, if the id that obtains (g), iq
The time, just mean the above electric current of critical current that has flow through motor, thereby add the electric current restriction.In this case, according to several 5 Hes
Simultaneous equations, obtain id and iq.
The id that obtains, iq as optimum current command value id
*, iq
*Output.Secondly, in PI control, id
*, iq
*Substitution is several 1, thereby obtains υ d, υ q, it is imported 2 phases/3 rotate mutually/static conversion 62.
Rotate mutually in 2 phases/3/static conversion 62 in, υ d, υ q are converted to υ a, υ b, υ c, as 3 phase current ia, ib, ic and be input to PWM transducer 50.That is, υ a, υ b, υ c as the three-phase modulations ripple, by with the comparison of triangular carrier, as to (the igbt: thyristor) carry out the signal of switching controls and work of the IGBT in the PWM transducer.
Ia, ic are measured by measuring appliance 51, by 3 phases/2 mutually static/rotation conversion 67 changes, the id that converts to (n), iq (n) feed back to id
*, iq
*, for input id
*, iq
*, making the deviation of output id (n), iq (n) is 0, controls according to this.
Below explanation is as the export-restriction control of the 2nd operation mode.Export-restriction control is according to necessary electrical power, and the form that the part that the generating of syncmotor 52 output is not enough is replenished from source power supply turns round.
Fig. 5 represents the curve chart of the limits value of engine output.Transverse axis is represented outside limits command value Vs, and the longitudinal axis is represented the percentage of engine output P (E/G).Vs gives as the command value of generator with the PWM converter control device 70 of controller from the master controller of GHP.Command value provides with the interval more than 10 seconds as the analog input of 0～5V.P (E/G) is not the ratio of engine full power, but gives the ratio of generator.For 20 horsepowers GHP, the about 15kW of engine output, but, what give generator is the degree of maximum 2kW.That is, P (E/G)=100% is 2kW.
When load big in the summer air-conditioning demand, compressor was big, air-conditioning was preferential, so end generating.
The output P (M) of syncmotor 52=P (E/G) η (M).Herein, η (M) is a moyor.
Export-restriction value P (M) Lim of syncmotor 52 is subjected to restriction and the (Vdc of P (E/G)
*Idc (n)) a medium and small side's restriction.
Secondly, vector control algorithm 65 is described.
Vdc
*During Idc (n) P＞P (M) Lim, in several 5, Vdc
*=Vdc (n).Also have, in several 2 or several 3, P (M)
*=P (M) Lim.Herein, V (n) is the measured value of direct current.(n) be to handle sampling value constantly.Like this, consider the motor torque change, the rising or the decrease speed of P (M) value limited.
On the other hand, Vdc
*During Idc (n)＜P (M) Lim, in several 5, Vdc
*=Vdc (I0=0).Also have, in several 2 or several 3, P (M)
*=Vdc
*Idc (n).
Generating PWM transducer 50 pairs of insufficient sections as the syncmotor 52 of generator replenish, and electrochemical capacitor by direct current (initial value is the part of 282V) 44 offers load to electrical power.The electric wire that electrochemical capacitor 44 is installed is the direct current intermediate bus bar.
Add the motor export-restriction, the electric current (electric charge) that provides to electrochemical capacitor 44 from generating PWM transducer 50 is be provided, load current will be not enough, and the voltage of electrochemical capacitor 44 will descend.The voltage one of electrochemical capacitor 44 descends, and the electric current electricity consumption source and course of just going into business is gone into, and determines voltage reaching the balance place.It is used as Vdc.
,,,, also have the possibility that the balance of voltage produces fluctuation herein, therefore, considered that motor torque limits the rising or the decrease speed of P (M) value along with the load change of engine if motor output is descended even add the motor export-restriction.In fact, make generator output descend quite slowly.
Below explanation has the sequential chart of the gas heat pump type air conditioner of above-mentioned formation.First talk about the control when moving from tomorrow.
Sequential chart when Fig. 6 represents to start.One has GHP running instruction, just imports source power supply, drives coolant pump Wp.Secondly, open gas valve, pilot engine 11.Have a generating PWM transducer 50 herein, and control, use the PWM converter control device 70 that syncmotor 52 is carried out power running from the electric current of source power supply 41 inflows as the PWM inverter.Owing to syncmotor 52 is used as starter, thereby, carry out grid control, the PWM transducer 50 of generating electricity is moved as the PWM inverter by PWM converter control device 70 figure in accordance with regulations by carrying out high torque (HT) control.
That is, be also used as the starter motor that engine start is used, just can cut down the power subsystem that starter motor and starter motor are used with syncmotor 52.
From piloting engine, after 35～160 seconds, with regard to Driven Compressor 13 and the 1st forced draft fan 16.After this, at 60 seconds with the inner control four-way valve.Compressor switched after 5 seconds, or the four-way valve switching was sent the running instruction of generating PWM transducer 50 after 10 seconds.
When generator output occurring, reduce the input of source power supply, making it is 0 substantially.
That is, generating PWM transducer 50, as mentioned above, according to moving as the direct voltage Optimal Control of the 1st operation mode or as arbitrary control that the export-restriction of the 2nd operation mode is controlled.The direct voltage Optimal Control provides load inverter 60 necessary full electrical power from syncmotor 52.Export-restriction control is then worked in coordination with syncmotor 52 and source power supply 41 necessary electrical power is provided.
Secondly, the control when normally stopping to be described.
Sequential chart when Fig. 7 represents to stop.One has the GHP halt instruction, just sends the 50 running halt instructions of generating PWM transducer immediately.Generator stops, and simultaneously, source power supply increases, and provides electrical power to coolant pump, compressor etc.
Secondly, stop compressor, close gas valve.Like this, engine will cut out.Close after the gas valve, drive fan in maximum 180 seconds, makes it stop again.After 10 seconds, stop cooling water pump again.
Describe in detail as above, gas heat pump type air conditioner according to present embodiment, it is to comprise having by gas engine 11 compressor driven 13 with as the 1st forced draft fan 16 of electric auxiliary machinery, cooling water pump 21 grades and be arranged on outdoor off-premises station, and as the 2nd forced draft fan 33 that is arranged on indoor indoor set, the gas heat pump type air conditioner of 34 grades, owing to have the syncmotor 52 that drives by gas engine 11, syncmotor 52 is regenerated control and obtained the PWM transducer 50 of dc electric power, 2 phases or 3 cross streams source power supplies are carried out rectification, filtering and obtain the transducer 40 of dc electric power, and detect the dc electric power that obtains by transducer 40 and be the electrical power that obtains by PWM transducer 50 PWM converter control device 70 as the control device that the power supply of electric auxiliary machinery in the off-premises station or above-mentioned indoor set provides, thereby reduced to exchange the worry that external electrical equipment that source power supply drives brings film to ring.Also have, can remove in order to carry out interconnection making isosynchronous synchronizing function of voltage and frequency and protective device from, cost is reduced.
Also have, the gas heat pump type air conditioner of present embodiment, because having detection is current sensor 43 and is above-mentioned inflow current to be reduced and direct voltage control device that the direct voltage of dc electric power that the said PWM transducer is produced is controlled when current sensing means detects inflow current from the current sensing means of the electric current that exchanges source power supply 41 and flow into, thereby can obtain be to drive electric auxiliary machinery in the off-premises station of gas-fired heat pump or the voltage of indoor set bottom line necessity, especially can reduce the iron loss of motor, also have, also can reduce the device of switching usefulness and the loss of other parts.
The average loss that increases because direct voltage is controlled at certain value before like this, just can reducing.
Also have, the gas heat pump type air conditioner of present embodiment, thereby the PWM transducer is controlled the electric current of using from exchanging the source power supply inflow as the PWM inverter is PWM converter control device 70 to the power running control device that syncmotor carries out power running owing to have, so can be also used as the starter motor that engine start is used with syncmotor 52, can cut down the power subsystem that starter motor is used.Particularly, syncmotor 52 starting torque height are suitable for as the starter that needs high output torque under the low speed.Also the handlebar induction motor was also used as the example of starter in the past, but, the induction motor starting torque is low, words as the starter use, must obtain big starting current from source power supply, the volume of inverter also can become greatly, must maximize, this is its problem, and just can address this is that according to present embodiment.
More than, an embodiment of gas heat pump type air conditioner of the present invention has been described, but, the present invention is not limited to this, can carry out various changes within the scope of its aim.
For example, in an embodiment, driving be compressor, forced draft fan as subsidiary engine, but, also can drive other as electromagnetically operated valve of subsidiary engine etc.
Claims (3)
1. a gas heat pump type air conditioner comprises being arranged on outdoor off-premises station and being arranged on indoor indoor set that described off-premises station has by gas-engine-driven compressor and electric auxiliary machinery, and described gas heat pump type air conditioner is characterised in that to have:
By described gas-engine-driven syncmotor; And
To described syncmotor regenerate control, obtain the PWM transducer of dc electric power,
The power supply of the electrical power that obtains with described PWM transducer as electric auxiliary machinery in the described off-premises station or described indoor set provided.
2. gas heat pump type air conditioner according to claim 1 is characterized in that,
Also have transducer single-phase or that the three-phase alternating current source power supply carries out rectification,
Consumption of electric power for electric auxiliary machinery in the described off-premises station or described indoor set, when the electrical power that obtains with described PWM transducer is not enough, just replenish the accident electrical power from source power supply by described transducer, and when the electrical power that obtains with described PWM transducer surpassed consumption of electric power, just the direct voltage of described dc electric power being controlled at from the inflow current of source power supply was 0 minimum voltage.
3. gas heat pump type air conditioner according to claim 2 is characterized in that,
Having thereby described PWM transducer controlled to use from described electrical power single-phase or three-phase alternating current source power supply side inflow as the PWM inverter makes described syncmotor carry out the power running control device of power running.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004074786 | 2004-03-16 | ||
| JP2004074786A JP2005265220A (en) | 2004-03-16 | 2004-03-16 | Gas heat pump type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1670452A true CN1670452A (en) | 2005-09-21 |
| CN1306232C CN1306232C (en) | 2007-03-21 |
Family
ID=35041806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100558748A Expired - Fee Related CN1306232C (en) | 2004-03-16 | 2005-03-16 | Gas heat pump type air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005265220A (en) |
| KR (1) | KR100610737B1 (en) |
| CN (1) | CN1306232C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104412049A (en) * | 2012-06-29 | 2015-03-11 | 三菱电机株式会社 | Heat pump device, heat pump system, air conditioner, and refrigerator |
| CN114194074A (en) * | 2021-12-30 | 2022-03-18 | 重庆长安新能源汽车科技有限公司 | Pulse heating current control method and control system of power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4737534B2 (en) * | 2006-01-11 | 2011-08-03 | 東京瓦斯株式会社 | Heat pump system |
| JP2008104337A (en) * | 2006-09-21 | 2008-05-01 | Sanyo Electric Co Ltd | Control unit of electromotor for refrigerant compressor |
| JP4905293B2 (en) * | 2007-08-20 | 2012-03-28 | アイシン精機株式会社 | Engine-driven air conditioner |
| JP2009236417A (en) * | 2008-03-27 | 2009-10-15 | Osaka Gas Co Ltd | Power generating-air conditioning system |
| JP5391677B2 (en) * | 2008-12-12 | 2014-01-15 | アイシン精機株式会社 | Heat pump type air conditioner outdoor unit |
| JP6308518B2 (en) * | 2013-11-14 | 2018-04-11 | 学校法人慶應義塾 | Energy self-supply type active vibration control system |
| KR102462771B1 (en) * | 2015-07-31 | 2022-11-02 | 엘지전자 주식회사 | Power converting apparatus using gridless method and heat pump including the same |
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| KR920009180B1 (en) * | 1990-11-20 | 1992-10-14 | 삼성전자 주식회사 | Current control circuit |
| JPH09298840A (en) * | 1996-05-02 | 1997-11-18 | Meidensha Corp | Charger of electric vehicle |
| JP3298450B2 (en) * | 1997-03-19 | 2002-07-02 | 株式会社日立製作所 | Air conditioner and power converter |
| JPH11252802A (en) * | 1998-03-04 | 1999-09-17 | Honda Motor Co Ltd | Engine power generating equipment operating controller |
| JP2001324240A (en) * | 2000-05-18 | 2001-11-22 | Sanyo Electric Co Ltd | Multi-energy system |
| JP2003074476A (en) * | 2001-08-31 | 2003-03-12 | Nippon Soken Inc | Compressor control device |
| JP4179832B2 (en) * | 2001-09-13 | 2008-11-12 | 大阪瓦斯株式会社 | Heat pump equipment |
| JP4063515B2 (en) * | 2001-10-04 | 2008-03-19 | 大阪瓦斯株式会社 | Engine-driven air conditioner with power generation function |
| JP2004040930A (en) * | 2002-07-04 | 2004-02-05 | Osaka Gas Co Ltd | Power generation system |
| JP4093815B2 (en) * | 2002-07-30 | 2008-06-04 | 東洋電機製造株式会社 | Output leveling control circuit of PWM converter in wind power generation |
| JP4165281B2 (en) * | 2003-04-10 | 2008-10-15 | アイシン精機株式会社 | Engine-driven air conditioner with power generation function |
-
2004
- 2004-03-16 JP JP2004074786A patent/JP2005265220A/en active Pending
-
2005
- 2005-03-15 KR KR1020050021204A patent/KR100610737B1/en not_active IP Right Cessation
- 2005-03-16 CN CNB2005100558748A patent/CN1306232C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104412049A (en) * | 2012-06-29 | 2015-03-11 | 三菱电机株式会社 | Heat pump device, heat pump system, air conditioner, and refrigerator |
| CN104412049B (en) * | 2012-06-29 | 2017-05-24 | 三菱电机株式会社 | heat pump device, air conditioner, and refrigerator |
| CN114194074A (en) * | 2021-12-30 | 2022-03-18 | 重庆长安新能源汽车科技有限公司 | Pulse heating current control method and control system of power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1306232C (en) | 2007-03-21 |
| KR20060043624A (en) | 2006-05-15 |
| KR100610737B1 (en) | 2006-08-09 |
| JP2005265220A (en) | 2005-09-29 |
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