CN103580496A - Control device - Google Patents
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- CN103580496A CN103580496A CN201310302825.4A CN201310302825A CN103580496A CN 103580496 A CN103580496 A CN 103580496A CN 201310302825 A CN201310302825 A CN 201310302825A CN 103580496 A CN103580496 A CN 103580496A
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Abstract
The present invention provides a control device. A first power converter (101) converts an AC voltage from an electric generator (31) into a DC voltage, a second power converter (102) converts the DC voltage from the first power converter (101) into an AC voltage and supplies the AC voltage to an electric motor (32). A first controller (103) controls the first power converter (101), a second controller (104) controls the second power converter (102). A casing (20) is provided with the first power converter (101), the second power converter (102), the first controller (103) and the second controller (104) therein. Therefore, the control device capable of using electric power from the electric generator to drive the electric motor without using capacitors used for large capacitive electric power storage can be provided.
Description
Technical field
The present invention relates to a kind of control device being connected between generator and motor, particularly a kind of control device that is used to the driven by power motor of spontaneous motor.
Background technology
Up to now, the mixed motivity type dynamical system that hydraulic driving mode is used together with driven by power mode is for known to everybody.This dynamical system is contained in construction equipment (such as ditcher (backhoe)), electric automobile etc.For example, hybrid power construction equipment in patent documentation 1 comprises generator motor, convolution motor and capacitor, the output shaft of this generator motor and engine links, the driving shaft of this convolution motor links with making the swing mechanism of revolution convolution, this hybrid power construction equipment in the future self power generation electromotor electric power and from the regenerated electric power savings of convolution motor in capacitor, and utilize the driven by power of this savings in the capacitor motor that circles round.
Patent documentation 1: No. 2008/117748 brochure of International Publication
Yet, in patent documentation 1, take the electric power of spontaneous motor (generator motor) in the future and be prerequisite from the regenerated electric power savings of motor (convolution motor) in capacitor electric power storage for (capacitor), thereby be difficult to reduce the capacitance of electric power storage use capacitor.That is to say, for savings is from the electric power of generator (generator motor) with from the regenerated electric power of motor (convolution motor), for example, with large electric capacity electric storage means (electrolytic capacitor), makes electric power storage capacitor, thereby be difficult to reduce cost.
Summary of the invention
The present invention completes just in view of the above problems.Its object is: provide a kind of and do not use large electric capacity electric power storage with capacitor, can be used to the control device of the driven by power motor of spontaneous motor.The invention of first aspect is usingd and is connected to control device between generator 31 and motor 32 as object, it is characterized in that: described control device comprises the first power converter 101, the second power converter 102, the first controller 103 and second controller 104 and housing 20, this first power converter 101 is converted to direct voltage by the alternating voltage from described generator 31, this second power converter 102 is converted to alternating voltage by the direct voltage from described the first power converter 101 and feeds to described motor 32, this the first controller 103 and this second controller 104 communicate each other, 103 pairs of described the first power converters 101 of this first controller are controlled, 104 pairs of described the second power converters 102 of this second controller are controlled, described the first power converter 101 and described the second power converter 102 are installed in this housing 20, and described the first controller 103 and described second controller 104.
In the invention of above-mentioned first aspect, because the first controller 103 and second controller 104 communicate each other, and the first power converter 101 and the second power converter 102 are controlled, so can coordinate to control (cooperative control) to the first power converter 101 and the second power converter 102.Thus, can suppress the voltage fluctuation between the first power converter 101 and the second power converter 102.
The invention of second aspect is in the invention of above-mentioned first aspect, it is characterized in that: in described control device, described generator 31 is configured to this generator 31 by fluid pressure motor 45 drivings for regeneration that are supplied to from the oil return of hydraulic actuator 4, and described motor 32 is configured to this motor 32 assisted engines 41 and drives hydraulic actuators 4.
In the invention of above-mentioned second aspect, by regeneration is stopped with fluid pressure motor 45, can make generator 31 stop, thereby can make at an easy rate generator 31 stop.And, drive the situation of load to compare the regenerated electric power that can reduce from motor 32 with being only configured to motor 32.
The invention of the third aspect is in the invention of above-mentioned first aspect, it is characterized in that: in described control device, described the first controller 103 and described second controller 104 are configured to this first controller 103 and this second controller 104 communicates with serial communication mode.
In the invention of the above-mentioned third aspect, the speed high speed that the first controller 103 and second controller 104 can be communicated each other.Thus, the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed.
The invention of fourth aspect is in the invention of above-mentioned first aspect, it is characterized in that: in described control device, described the first controller 103 and described second controller 104 are formed on to be controlled on substrate 13.
In the invention of above-mentioned fourth aspect, can reduce the noise producing between the first controller 103 and second controller 104.Thus, the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed.
The invention of the 5th aspect is in the invention of above-mentioned fourth aspect, it is characterized in that: in described control device, described the first power converter 101 is formed on the first driving substrate 11, described the second power converter 102 is formed on the second driving substrate 12, and described control substrate 13 is arranged on described first and drives substrate 11 and described second to drive the top of substrate 12.
In invention aspect the above-mentioned the 5th, can effectively utilize the space in housing 20.
The invention of the 6th aspect is in the invention aspect the above-mentioned the 5th, it is characterized in that: in described control device, described first drives substrate 11 and described second to drive substrate 12 to be arranged on the bottom wall portion 21a of described housing 20, at the bottom wall portion 21a of described housing 20, be formed with cooling end 210, this cooling end 210 is used for driving described the first power converter 101 on substrate 11 to carry out cooling with described the second power converter 102 being formed on described the second driving substrate 12 to being formed on described first.
In invention aspect the above-mentioned the 6th, can make to be formed on the first power converter 101 on the first driving substrate 11 and be formed on the second power converter 102 and cooling end 210 thermo-contacts on the second driving substrate 12.
The invention of the 7th aspect is in the invention of above-mentioned first aspect, it is characterized in that: described control device also comprises DC bus 100 and capacitor 105, this DC bus 100 couples together described the first power converter 101 and described the second power converter 102, this capacitor 105 is connected with described DC bus 100, and described DC bus 100 and described capacitor 105 are arranged in described housing 20.
In invention aspect the above-mentioned the 7th, by DC bus 100 is connected with capacitor 105, can absorb the voltage fluctuation of DC bus 100.
The invention of eight aspect is in the invention aspect the above-mentioned the 7th, it is characterized in that: in described control device, the capacitance of described capacitor 105 is set as absorbing voltage fluctuation that the switching manipulation due to described the first power converter 101 and described the second power converter 102 produces and the voltage fluctuation of described DC bus 100.
In the invention of above-mentioned eight aspect, can be by the first power converter 101 use buffer condensers (snubber capacitor) (being used for absorbing the capacitor of the voltage fluctuation producing due to switching manipulation), the second power converter 102 use buffer condensers and the function of smmothing capacitor that is used for absorbing the voltage fluctuation of DC bus 100 be gathered in a capacitor 105.
-effect of invention-
According to the invention of first aspect, because can reduce the voltage fluctuation between the first power converter 101 and the second power converter 102, so do not use large electric capacity electric power storage can be used to the driven by power motor 32 of spontaneous motor with capacitor.
According to the invention of second aspect, can make at an easy rate generator 31 stop, the regenerated electric power from motor 32 can be reduced, thereby the voltage fluctuation between the first power converter 101 and the second power converter 102 can be reduced.
According to the invention of the third aspect, because the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed, so can reduce the voltage fluctuation between the first power converter 101 and the second power converter 102.
According to the invention of fourth aspect, because the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed, so can reduce the voltage fluctuation between the first power converter 101 and the second power converter 102.
According to the invention of the 5th aspect, because can effectively utilize the space in housing 20, so can be by control device 10 miniaturizations.
According to the invention of the 6th aspect, because can make the first power converter 101 and the second power converter 102 and cooling end 210 thermo-contacts, so can carry out cooling to the first power converter 101 and the second power converter 102 efficiently.
According to the invention of the 7th aspect, because can absorb the voltage fluctuation of DC bus 100, so can reduce the voltage fluctuation of DC bus 100.
According to the invention of eight aspect, because the function of smmothing capacitor of can be by the first power converter 101 use buffer condensers, the second power converter 102 use buffer condensers and being used for absorbing the voltage fluctuation of DC bus 100 is gathered in a capacitor 105, so can be by control device 10 miniaturizations.
Accompanying drawing explanation
Fig. 1 is the circuit diagram for the structure of mixed motivity type hydraulic test is described.
Fig. 2 is the circuit diagram for the internal structure of control device is described.
Fig. 3 is the stereogram for the outward appearance of control device is described.
Fig. 4 is the cutaway view for the internal structure of control device is described.
Fig. 5 is the vertical view for the internal structure of control device is described.
Fig. 6 is the vertical view for the internal structure of control device is described.
-symbol description-
1-hybrid-power hydraulic device; 10-control device; 11-first drives substrate; 12-second drives substrate; 13-controls substrate; 14-noise shield; 100-DC bus; 101-the first power converter; 102-the second power converter; 103-the one CPU(the first controller); 104-the 2nd CPU(second controller); 105-capacitor; 20-housing; 21-main part; 22-cap; 23-installing component; 31-generator; 32-motor; 4-hydraulic actuator; 40-fuel tank; 41-engine; 42-hydraulic pump; 43-reversal valve; 44-convolution fluid pressure motor; 45-regeneration fluid pressure motor; 50-revolution.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are elaborated.Should illustrate, with identical symbol, represent identical part or corresponding part in the accompanying drawings, and not repeat the explanation to these parts.
(hybrid-power hydraulic device)
Fig. 1 represents to comprise the structure example of the mixed motivity type hydraulic system 1 of the related control device of embodiments of the present invention 10.Mixed motivity type hydraulic system 1 is contained in the construction equipments such as ditcher.Mixed motivity type hydraulic system 1 comprises fuel tank 40, hydraulic actuator 4, engine 41, fluid pressure motor 45, generator 31, control device 10 and motor 32 for regeneration.
< hydraulic actuator >
Then, hydraulic actuator 4 is described.In this example, hydraulic actuator 4 is that hydraulic actuator 4 mainly consists of with fluid pressure motor 44 hydraulic pump 42, reversal valve 43 and convolution for making the mechanism of revolution 50 convolutions.
(hydraulic pump)
If engine 41 drives hydraulic pump 42, hydraulic pump 42 has been stored in the hydraulic oil in fuel tank 40 with regard to suction, and the hydraulic oil of suction is sprayed to reversal valve 43 through pipeline 401.Should illustrate, on pipeline 401, be provided with check-valves 411.And, for making the pressure of the hydraulic oil in pipeline 401 be no more than setting, on pipeline 401, be also provided with overflow valve 412.
(reversal valve)
(convolution fluid pressure motor)
Convolution is the fluid pressure motors for revolution 50 convolution is arranged with fluid pressure motor 44, utilization from reversal valve 43 through pipeline 44a(or pipeline 44b) hydraulic oil of supply drives this fluid pressure motor 44 for convolution.By change the stream of the hydraulic oil between fluid pressure motor 44 for reversal valve 43 and convolution with reversal valve 43, the convolution direction of revolution 50 is just switched.Should illustrate, for making the pressure of the hydraulic oil in pipeline 44a, 44b be no more than setting, between pipeline 44a and pipeline 402, be provided with sequence valve (sequence valve) 413, and be provided with sequence valve 414 between pipeline 44b and pipeline 402.And, for making the space in pipeline 44a, 44b not become vacuum, between pipeline 44a and pipeline 400, be provided with check-valves 415, and be provided with check-valves 416 between pipeline 44b and pipeline 400.
(from the oil return of hydraulic actuator)
Oil return (in this example, the hydraulic oil having sprayed from sequence valve 413,414) from hydraulic actuator 4, feeds to fluid pressure motor 45 for regeneration through pipeline 402.Should illustrate, for regulating with the flow of the oil return of fluid pressure motor 45 feeding to regeneration, between pipeline 402 and fuel tank 40, be provided with overflow valve 417.
(control device)
Then, with reference to Fig. 2, control device 10 is described.Control device 10 comprises the first power converter 101, the second power converter 102, CPU(first controller) the 103, the 2nd CPU(second controller) 104, DC bus 100, capacitor 105 and housing 20.In this example, control device 10 also comprises signaling interface 110.
< the first power converter and the second power converter >
The first power converter 101 is connected with generator 31 by power cable (in this example, three power cables), and the second power converter 102 is connected with motor 32 by power cable.The first power converter 101 and the second power converter 102 are connected to each other by DC bus 100.
The the first power converter 101 in the future alternating voltage (in this example, three-phase alternating voltage) of spontaneous motor 31 is converted to direct voltage, and direct voltage is fed to DC bus 100.The second power converter 102 will be converted to alternating voltage through DC bus 100 for the direct voltage coming from the first power converter 101, and alternating voltage is fed to motor 32.In this example, the first power converter 101 by six switch element SW,, SW and six sustained diode 0,, D0 forms.The second power converter 102 has the structure the same with the first power converter 101.
< the one CPU and the 2nd CPU >
The one CPU103 and the 2nd CPU104 are connected to each other and are communicated each other by holding wire 111, and a CPU103 controls the first power converter 101, and the 2nd CPU104 controls the second power converter 102.Should illustrate, preferably a CPU103 and the 2nd CPU104 are configured to a CPU103 and the 2nd CPU104 and communicate with serial communication mode.
The situation of the control (coordinating to control) that the one CPU103 and the 2nd CPU104 carry out the first power converter 101 and the second power converter 102 is described herein.The one CPU103 controls the switching manipulation of the first power converter 101, thus the energy output of generator 31 is regulated.The 2nd CPU104 controls the switching manipulation of the second power converter 102, and to the rotating speed of motor 32, (or torque) regulates thus.The one CPU103 sends, receives following information to each other with the 2nd CPU104: about the information of the energy output of generator 31, about information of the amount of power consumption (electric weight corresponding with the load of motor 32) of motor 32 etc.The one CPU103 and the 2nd CPU104 control the first power converter 101 and the second power converter 102 according to the information that sends to each other, receives, a CPU103 controls the first power converter 101 and the 2nd CPU104 controls the second power converter 102, the voltage fluctuation of accomplishing DC bus 100 be inhibited (for example, making the energy output of generator 31 be no more than the amount of power consumption of motor 32).Realize as mentioned above the coordination of the first power converter 101 and the second power converter 102 is controlled.
Should illustrate, a CPU103 also can be configured to: a CPU103 is according to feeding to the pressure of oil return of fluid pressure motor 45 or the energy output of the calculating generators such as rotating speed 31 of flow or generator 31 for regeneration.Can be enough be arranged on regeneration detects with the pressure of the oil return of fluid pressure motor 45, flow etc. feeding to regenerate with the pressure sensor of upstream one side of fluid pressure motor 45 or flow sensor (not shown) etc.; Can be enough be arranged near speed probe (not shown) generator 31 etc. detects the rotating speed of generator 31.
The 2nd CPU104 also can be configured to: the 2nd CPU104 is according to the amount of power consumption of the calculating motors such as rotating speed 32 of the ejection pressure of hydraulic pump 42 or motor 32.The pressure sensor (not shown) etc. that can be enough be arranged on downstream one side of hydraulic pump 42 detects the ejection pressure of hydraulic pump 42; Can be enough be arranged near speed probe (not shown) motor 32 etc. detects the rotating speed of motor 32.
< DC bus and capacitor >
< housing >
The first power converter 101, the second power converter 102, a CPU103, the 2nd CPU104, DC bus 100, capacitor 105 and signaling interface 110 are installed in housing 20.In this example, in housing 20, signaling interface 110 is also installed.Signaling interface 110 is connected with external equipment (not shown) by signal cable, and is connected with the 2nd CPU104 with a CPU103 by holding wire.Signaling interface 110 externally carries out relaying to signal between equipment and a CPU103 and the 2nd CPU104.
The structure > of < housing
Then, with reference to Fig. 3 and Fig. 4, the structure of housing 20 is described.Fig. 3 means the stereogram of the outward appearance of control device 10, and Fig. 4 is that edge is at the cutaway view IV-IV line shown in Fig. 3, control device 10.Housing 20 comprises main part 21 and cap 22.
(main part)
-bottom wall portion of main part-
On the outer surface of the bottom wall portion 21a of main part 21, be provided with slot part 211.Slot part 211 forms and is used for making cooling for example, stream with liquid (, cooling water) circulation.On the outer surface of the bottom wall portion 21a of main part 21, covering slot part 211 is fixed with and covers 212.Thus, at the bottom wall portion 21a of main part 21, be formed with cooling end 210.
-side wall portion of main part-
At the side wall portion 21c of main part 21, be formed with generator 31 use power cable interface 221, motor 32 use power cable interface 222, signal cable interface 223, flow into interface 224 and flow out interface 225.Flowing into interface 224 communicates with the inflow entrance of cooling end 210; Flowing out interface 225 communicates with the flow export of cooling end 210.Flow into interface 224 and be used for supplying with the cooling pipeline with liquid (or pipe) and be connected; Flow out interface 225 and be used for that cooling pipeline of discharging with liquid (or pipe) is connected to (not shown).Be fed to flow in interface 224 cooling with liquid through cooling end 210(more particularly, the stream being formed by slot part 211) from flowing out interface 225, discharge.
(cap)
< is arranged on the electric parts > in housing
Then, with reference to Fig. 4～Fig. 6, the electric parts that are arranged in housing 20 are described.In housing 20, be provided with that the first driving substrate 11, second drives substrate 12, controls substrate 13, noise shield 14, two film capacitor 105a, 105b, a pair of busbar 100a, 100b etc.Capacitor 105 shown in film capacitor 105a, 105b pie graph 2, the DC bus 100 shown in busbar 100a, 100b pie graph 2.Should illustrate, Fig. 5 is the vertical view of the control device 10 under the state cap 22 being taken off, and Fig. 6 is the vertical view of the control device 10 under the state cap 22, control substrate 13 and noise shield 14 being taken off.
(first drives substrate and second to drive substrate)
On the first driving substrate 11, be formed with power module PM(more particularly, the first power converter 101), substrate interface 11a etc.The first power converter 101 is connected with electricity interface 11b by power cable.The power cable 11c extending out from generator 31 inserts power cable interface 221 and is connected with electricity interface 11b.
On the second driving substrate 12, be formed with power module PM(more particularly, the second power converter 102), substrate interface 12a etc.The second power converter 102 is connected with electricity interface 12b by power cable.The power cable 12c extending out from motor 32 inserts power cable interface 222 and is connected with electricity interface 12b.
(controlling substrate and noise shield)
On control substrate 13, be formed with a CPU103, the 2nd CPU104, substrate interface 13a, 13b, signaling interface 110 etc.The one CPU103 and the 2nd CPU104 are connected to each other by being formed on the holding wire 111 of controlling on substrate 13. Substrate interface 13a, 13b are connected with the 2nd CPU104 with a CPU103 by being formed on the holding wire of controlling on substrate 13.Substrate interface 13a drives the substrate interface 11a of substrate 11 to be connected by signal cable and first; Substrate interface 13b drives the substrate interface 12a of substrate 12 to be connected by signal cable and second.Signaling interface 110 is connected with the 2nd CPU104 with a CPU103 by being formed on the wiring of controlling on substrate 13.The signal cable 13c that extends out from external device (ED) (not shown) inserts signal cable interface 223 and is connected with signaling interface 110.
(film capacitor and busbar)
< comparative example >
Generally speaking, power converter is arranged in a housing together with the CPU that is used for this power converter to control.For example, in patent documentation 1, in two power converters that are connected with a corresponding motor in generator motor (generator) and convolution motor (motor) respectively, be separately installed with the CPU that the command value (power generation command) to carrying out self-control device is decoded, the power converter connecting with generator motor (generator) is arranged in a housing together with the CPU on being arranged on this power converter, and the power converter connecting with convolution motor (motor) is arranged in another housing together with the CPU on being arranged on this power converter.
Herein, to the first power converter 101 and a CPU103 being arranged in the first housing and the situation (comparative example) that the second power converter 102 and the 2nd CPU104 are arranged in the second housing being described.In this case, a CPU103 and the 2nd CPU104 signal cable through extracting to the outside of the first housing and the second housing communicates each other.Therefore, noise (for example, from the radiation noise of external device (ED)) is easy to sneak between a CPU103 and the 2nd CPU104, thereby is difficult to speed high speed that a CPU103 and the 2nd CPU104 are communicated each other.Therefore, in above-mentioned comparative example, be difficult to the coordination to the first power converter 101 and the second power converter 102 to control high speed, thereby be difficult to reduce the capacitance of capacitor 105.
< effect >
In the related control device 10 of present embodiment, because a CPU103 and the 2nd CPU104 communicate each other, the first power converter 101 and the second power converter 102 are controlled, so can coordinate to control to the first power converter 101 and the second power converter 102.Thus, can suppress the voltage fluctuation (that is, the voltage fluctuation between the first power converter 101 and the second power converter 102) of DC bus 100.Therefore, do not use large electric capacity electric power storage with capacitor, can be used to the driven by power motor 32 of spontaneous motor 31.That is to say, can reduce to be arranged on the capacitance (or omitting capacitor 105) of the capacitor 105 between the first power converter 101 and the second power converter 102.
Because a CPU103 and the 2nd CPU104 are arranged in a housing 20, so compare with above-mentioned comparative example, can suppress the noise radiation noise of housing 20 outsides (particularly from) and sneak between a CPU103 and the 2nd CPU104.Thus, can reduce the noise between a CPU103 and the 2nd CPU104, thereby the speed high speed that a CPU103 and the 2nd CPU104 can be communicated each other.Therefore, the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed, thereby can reduce the voltage fluctuation of DC bus 100.
Because the first power converter 101, the second power converter 102, a CPU103 and the 2nd CPU104 are arranged in a housing 20, can be by control device 10 miniaturizations so compare with above-mentioned comparative example.
Because generator 31 is configured to this generator 31 and is driven with fluid pressure motor 45 by regeneration, so for example, by making regeneration stop (, making oil return not flow into regeneration with in fluid pressure motor 45) with fluid pressure motor 45, can make generator 31 stop.Therefore, be configured to generator 31 situation (for example situation of patent documentation 1) that this generator 31 rotates together with engine 41 and compare, can make at an easy rate generator 31 stop.Because motor 32 is configured to this motor, 32 assisted engines 41 drive hydraulic actuators 4, for example, so drive the situation (situation of patent documentation 1) of load (being revolution 50 in this example) to compare the regenerated electric power (regenerated electric power while particularly slowing down) that can reduce from motor 32 with motor 32 with being only configured to.Therefore, can reduce the voltage fluctuation of DC bus 100.Should illustrate, generator 31 can be configured to rotation together with engine 41, only also can be configured to and make revolution 50 convolutions with motor 32.
By the first controller 103 and second controller 104 being configured to this first controller 103 and this second controller 104, with serial communication mode, communicate the speed high speed that the first controller 103 and second controller 104 can be communicated each other.Thus, the coordination to the first power converter 101 and the second power converter 102 can be controlled to high speed, thereby can reduce the voltage fluctuation of DC bus 100.
By a CPU103 and the 2nd CPU104 are formed on a control substrate 13, can further reduce the noise producing between a CPU103 and the 2nd CPU104.Thus, can further the coordination to the first power converter 101 and the second power converter 102 be controlled to high speed, thereby can further reduce the voltage fluctuation of DC bus 100.
By being arranged on by controlling substrate 13 top that the first driving substrate 11 and second drives substrate 12, can effectively utilize the space in housing 20, thereby can be further by control device 10 miniaturizations.
By the bottom wall portion 21a(that drives substrate 12 to be arranged on housing 20 the first driving substrate 11 and second, be formed with the part of cooling end 210), can make to be formed on the first driving substrate 11 and second and drive power module PM, PM(on substrate 12 more particularly, the first power converter 101 and the second power converter 102) with cooling end 210 thermo-contacts.Thus, can to power module PM, PM, carry out cooling efficiently.
By DC bus 100 is connected with capacitor 105, can absorb the voltage fluctuation of DC bus 100, thereby can further reduce the voltage fluctuation of DC bus 100.Should illustrate, in the related control device 10 of this execution mode, because can be by the coordination of the first power converter 101 and the second power converter 102 being controlled to suppress the voltage fluctuation of DC bus 100, thus be used for savings and for example, compare and can make the capacitance of capacitor 105 lower from the capacitance of the capacitor for electric power storage (capacitor of patent documentation 1) of the electric power of generator 31.As mentioned above, because can reduce the capacitance of capacitor 105, so capacitor 105 can be arranged in housing 20.Should illustrate, control device 10 also can not comprise capacitor 105.
The capacitance of capacitor 105 is set as absorbing voltage fluctuation that the switching manipulation due to the first power converter 101 and the second power converter 102 produces and the voltage fluctuation of DC bus 100.The function of smmothing capacitor of in such event, can be by the first power converter 101 use buffer condensers (being used for absorbing the capacitor of the voltage fluctuation producing due to switching manipulation), the second power converter 102 use buffer condensers and being used for absorbing the voltage fluctuation of DC bus 100 is gathered in a capacitor 105.Should illustrate, the first power converter 101 also can comprise above-mentioned buffer condenser; The second power converter 102 also can comprise above-mentioned buffer condenser.
(other execution modes)
Should illustrate, a CPU103 and the 2nd CPU104 also can be respectively formed in two control substrates on a corresponding substrate.In this case, preferably a CPU103 and the 2nd CPU104 are connected to each other by serial communication cable, and are configured to a CPU103 and the 2nd CPU104 and communicate each other with serial communication mode.
Should illustrate, above execution mode is preferred in essence example, does not have intention to be limited the scope of the present invention, application of the present invention or its purposes.
-industrial applicability-
In sum, the mixed motivity type construction equipment (for example ditcher) that above-mentioned control device uses together with driven by power mode hydraulic driving mode of great use.
Claims (8)
1. a control device, this control device is connected between generator (31) and motor (32), it is characterized in that,
Described control device comprises:
The first power converter (101), this first power converter (101) is converted to direct voltage by the alternating voltage from described generator (31);
The second power converter (102), this second power converter (102) is converted to the direct voltage from described the first power converter (101) alternating voltage and feeds to described motor (32);
The first controller (103) and second controller (104), this the first controller (103) and this second controller (104) communicate each other, this first controller (103) is controlled described the first power converter (101), and this second controller (104) is controlled described the second power converter (102); And
Housing (20), is provided with described the first power converter (101) and described the second power converter (102) and described the first controller (103) and described second controller (104) in this housing (20).
2. control device according to claim 1, is characterized in that,
Described generator (31) is configured to: this generator (31) is driven by the fluid pressure motor for regeneration (45) being supplied to from the oil return of hydraulic actuator (4),
Described motor (32) is configured to: this motor (32) assisted engine (41) drives hydraulic actuator (4).
3. control device according to claim 1, is characterized in that,
Described the first controller (103) and described second controller (104) are configured to: this first controller (103) and this second controller (104) communicate with serial communication mode.
4. control device according to claim 1, is characterized in that,
Described the first controller (103) and described second controller (104) are formed on to be controlled on substrate (13).
5. control device according to claim 4, is characterized in that,
It is upper that described the first power converter (101) is formed on the first driving substrate (11), and it is upper that described the second power converter (102) is formed on the second driving substrate (12),
Described control substrate (13) is arranged on described first and drives substrate (11) and described second to drive the top of substrate (12).
6. control device according to claim 5, is characterized in that,
Described the first driving substrate (11) and described the second driving substrate (12) are arranged on the bottom wall portion (21a) of described housing (20),
Bottom wall portion (21a) in described housing (20) is formed with cooling end (210), and this cooling end (210) is used for driving described the second power converter (102) on substrate (12) to carry out cooling to being formed on described the first power converter (101) on described the first driving substrate (11) and being formed on described second.
7. control device according to claim 1, is characterized in that,
Described control device also comprises:
DC bus (100), this DC bus (100) couples together described the first power converter (101) and described the second power converter (102); With
Capacitor (105), this capacitor (105) is connected with described DC bus (100),
Described DC bus (100) and described capacitor (105) are arranged in described housing (20).
8. control device according to claim 7, is characterized in that,
The capacitance of described capacitor (105) is set as absorbing voltage fluctuation that the switching manipulation due to described the first power converter (101) and described the second power converter (102) produces and the voltage fluctuation of described DC bus (100).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012159735 | 2012-07-18 | ||
| JP2012-159735 | 2012-07-18 |
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|---|---|
| CN103580496A true CN103580496A (en) | 2014-02-12 |
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| CN201310302825.4A Pending CN103580496A (en) | 2012-07-18 | 2013-07-18 | Control device |
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|---|---|---|---|---|
| JPH1098887A (en) * | 1996-09-20 | 1998-04-14 | Hitachi Ltd | Power converter |
| JP4327618B2 (en) * | 2004-02-05 | 2009-09-09 | トヨタ自動車株式会社 | Inverter-integrated rotating electrical machine and vehicle equipped with the rotating electrical machine |
| JP4453027B2 (en) * | 2005-09-20 | 2010-04-21 | アイシン・エィ・ダブリュ株式会社 | Inverter device |
| JP4793225B2 (en) * | 2006-11-07 | 2011-10-12 | 株式会社デンソー | Inverter device |
-
2013
- 2013-07-18 JP JP2013149188A patent/JP2014039460A/en active Pending
- 2013-07-18 CN CN201310302825.4A patent/CN103580496A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316823A (en) * | 2001-02-16 | 2001-10-10 | 株式会社日立制作所 | Electric apparatus |
| US20020125052A1 (en) * | 2001-03-12 | 2002-09-12 | Masami Naruse | Hybrid construction equipment |
| JP2006187083A (en) * | 2004-12-27 | 2006-07-13 | Daikin Ind Ltd | Inverter device, module for converter, and air conditioner |
| US20070109715A1 (en) * | 2005-11-17 | 2007-05-17 | Hitachi, Ltd. | Capacitor module, power converter, vehicle-mounted electrical-mechanical system |
| WO2011141234A1 (en) * | 2010-05-12 | 2011-11-17 | Zf Friedrichshafen Ag | Power electronic arrangement |
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