CN103795301A - Multi-driving device and driving circuit thereof - Google Patents
Multi-driving device and driving circuit thereof Download PDFInfo
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- CN103795301A CN103795301A CN201310111608.7A CN201310111608A CN103795301A CN 103795301 A CN103795301 A CN 103795301A CN 201310111608 A CN201310111608 A CN 201310111608A CN 103795301 A CN103795301 A CN 103795301A
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Abstract
A multi-driving device and a driving circuit thereof. The driving circuit is coupled to the first driving device and the second driving device and comprises three switch sets, each switch set comprises a first switch, a second switch, a third switch and a fourth switch, the first switch is connected with the second switch in series, the third switch is connected with the fourth switch in series and coupled between the first switch and the second switch, an ith inductor of the first driving device is coupled between the third switch and the fourth switch, and i ranges from 1 to 3. In the high-speed mode, the first switch and the third switch of one of the three switch groups are turned on, the second switch and the fourth switch are turned off, the first switch and the third switch of the other of the three switch groups are turned off, the second switch is turned on, and the fourth switch is turned on or off, so that the second driving device obtains boosting.
Description
Technical field
The present invention relates to a kind of drive circuit and apply its many drive units, and be particularly related to a kind of many drive units that improve the drive circuit of high speed performance and apply it.
Background technology
Conventional ADS driving device is conventionally in conjunction with high-speed motor and zero motor, with the performance that promotes it under low-speed running and under running up.But under running up, drive unit only uses high-speed motor conventionally, and cause zero motor idle.So, in the time running up, zero motor performs practically no function, and has limited to the application of zero motor.
Summary of the invention
The present invention relates to a kind of drive circuit and apply its many drive units, in an embodiment, can promote the application of zero motor, improve the high speed performance of many drive units.
According to one embodiment of the invention, a kind of many drive units are proposed.Many drive units comprise one first drive unit, one second drive unit and one drive circuit.The first drive unit comprises n inductance.Drive circuit is coupled to the first drive unit and the second drive unit, and comprises n the switches set being connected in parallel to each other, and wherein n is greater than 3 positive integer.Each switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, the first switch is connected with second switch, the 3rd switch series is coupled to the 4th switch and is coupled between the first switch and second switch, the i inductance of the first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n.Wherein, at a low-speed mode, each the first switch and each second switch conducting; In a fast mode, first switch of one first group of n switches set and the 3rd switch conduction and second switch and the cut-off of the 4th switch, and first switch of one second group of n switches set and the cut-off of the 3rd switch, second switch conducting, and the 4th conducting of switch selectivity or the cut-off of second group of n switches set used the second drive unit acquisition boosted.
According to another embodiment of the present invention, a kind of drive circuit is proposed.Drive circuit is coupled to the first drive unit and the second drive unit, and the first drive unit comprises n inductance, and wherein n is greater than 3 positive integer.Drive circuit comprises n the switches set being connected in parallel to each other, each switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, the first switch is connected with second switch, the 3rd switch series is coupled to the 4th switch and is coupled between the first switch and second switch, the i inductance of the first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n.Wherein, at a low-speed mode, each the first switch and each second switch conducting; In a fast mode, first switch of one first group of n switches set and the 3rd switch conduction and second switch and the cut-off of the 4th switch, and first switch of one second group of n switches set and the cut-off of the 3rd switch, second switch conducting, and the 4th conducting of switch selectivity or the cut-off of second group of n switches set used the second drive unit acquisition boosted.
According to another embodiment of the present invention, a kind of many drive units are proposed.Many drive units comprise one first drive unit, one second drive unit and one drive circuit.The first drive unit comprises n inductance.Drive circuit is coupled to the first drive unit and the second drive unit, and comprise n the switches set being connected in parallel to each other, each switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, wherein the first switch is connected with second switch, the 3rd switch series is coupled to the 4th switch and is coupled between the first switch and second switch, the i inductance of the first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n.At a low-speed mode, the first switch conduction and the second switch conducting of one first group of n switches set, first switch cut-off and the second switch conducting of one second group of n switches set, first switch cut-off and the second switch conducting of the 3rd group of n switches set; In a fast mode, first switch conduction of first group of n switches set, second switch cut-off, the 3rd switch conduction and the cut-off of the 4th switch, the first switch cut-off of second group of n switches set, the first switch cut-off of the 3rd group of n switches set; The 4th switch by the 4th switch of second group and the 3rd group at least one with signal controlling cut-off or conducting, the second drive unit is obtained and boosts.
According to another embodiment of the present invention, a kind of drive circuit is proposed.Drive circuit is coupled to the first drive unit and the second drive unit, and comprise n the switches set being connected in parallel to each other, each switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, wherein the first switch is connected with second switch, the 3rd switch series is coupled to the 4th switch and is coupled between the first switch and second switch, the i inductance of the first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n.At a low-speed mode, the first switch conduction and the second switch conducting of one first group of n switches set, first switch cut-off and the second switch conducting of one second group of n switches set, first switch cut-off and the second switch conducting of the 3rd group of n switches set; In a fast mode, first switch conduction of first group of n switches set, second switch cut-off, the 3rd switch conduction and the cut-off of the 4th switch, the first switch cut-off of second group of n switches set, the first switch cut-off of the 3rd group of n switches set; The 4th switch by the 4th switch of second group and the 3rd group at least one with signal controlling cut-off or conducting, the second drive unit is obtained and boosts.
For there is to better understanding above-mentioned and other aspect of the present invention, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below:
Accompanying drawing explanation
Figure 1A illustrates the functional block diagram according to many drive units of one embodiment of the invention.
Figure 1B illustrates the circuit diagram of many drive units of Figure 1A.
Fig. 1 C illustrates the circuit diagram of the first switches set of Figure 1B.
The equivalent circuit diagram of drive circuit when Fig. 2 illustrates many drive units low-speed running of Figure 1A.
Many drive units that Fig. 3 A illustrates Figure 1A run up and the current path figure of drive circuit when the 4th switch conduction.
Fig. 3 B illustrates the equivalent circuit diagram of the drive circuit of Fig. 3 A.
Many drive units that Fig. 4 A illustrates Figure 1A run up and the current path figure of drive circuit when the cut-off of the 4th switch.
Fig. 4 B illustrates the equivalent circuit diagram of the drive circuit of Fig. 4 A.
Fig. 5 illustrates the signal schematic representation of embodiment of the present invention control the 4th switch.
Fig. 6 A illustrates the first drive unit of Figure 1A and rotating speed-torsional performance figure of the second drive unit.
Fig. 6 B illustrates the first drive unit of Fig. 6 A and the synthetic performance map of the rotating speed-moment of torsion of the second drive unit.
Fig. 7 illustrates the circuit diagram of the drive circuit of many devices drivings of another embodiment of the present invention.
Fig. 8 illustrates the circuit diagram according to many drive units of another embodiment of the present invention.
The equivalent circuit diagram of drive circuit when Fig. 9 illustrates many drive units low-speed running of Fig. 8.
The equivalent circuit diagram of drive circuit when many drive units that Figure 10 illustrates Fig. 8 run up.
Figure 11 A illustrates the equivalent circuit diagram of a kind of control method that runs up of many drive units of Fig. 8.
Figure 11 B illustrates the current characteristics figure of the drive circuit of Figure 11 A.
The run up equivalent circuit diagram of control method of the another kind that Figure 12 A illustrates many drive units of Fig. 8.
Figure 12 B illustrates the current characteristics figure of the drive circuit of Figure 12 A.
The run up equivalent circuit diagram of control method of the another kind that Figure 13 A illustrates many drive units of Fig. 8.
Figure 13 B illustrates the current characteristics figure of the drive circuit of Figure 13 A.
[symbol description]
10,10 ': many drive units
100: the first drive units
200,200 ', 400: drive circuit
210: the first switches set
220: second switch group
230: the three switches set
200i: i switches set
200n: n switches set
300: the second drive units
A, b, c, d: node
C1, C2, C12, C12 ': curve
D: pulse duration
I2, I3, It: electric current
L1: the first inductance
L2: the second inductance
L3: the 3rd inductance
Li: i inductance
Ln: n inductance
P: pulse duration ratio
S11, S21, S31, Si1, Sn1: the first switch
S12, S22, S32, Si2, Sn2: second switch
S13, S23, S33, Si3, Sn3: the 3rd switch
S14, S24, S34, Si4, Sn4: the 4th switch
T: cycle
Vcd, Vab: voltage
Embodiment
Please refer to Figure 1A, it illustrates the functional block diagram according to many drive units of one embodiment of the invention.Many drive units 10 are for example the devices that the vehicles, toolroom machine and other need outputting power, and it comprises the first drive unit 100, drive circuit 200, the second drive unit 300 and drive circuit 400.
Please refer to Figure 1B, it illustrates the circuit diagram of many drive units of Figure 1A.The first drive unit 100 is coupled to the second drive unit 300 by drive circuit 200 and 400.The first drive unit 100 is for example three-phase motor, and it comprises the first inductance L 1, the second inductance L 2 and the 3rd inductance L 3, but the first drive unit 100 also can be the drive unit that other comprises inductance.The kind of the second drive unit 300 can be similar in appearance to right the first drive unit 100, and in addition, the inductance value of the second drive unit 300 can be identical or be different from the inductance value of the first drive unit 100.
Please refer to Fig. 1 C, it illustrates the circuit diagram of the first switches set of Figure 1B.The first switches set 210 comprises first switch S 11 and second switch S12 and the 3rd switch S 13 of connecting and the 4th switch S 14 of series connection, wherein the 3rd switch S 13 is coupled between the first switch S 11 and second switch S12, and the first inductance L 1 of the first drive unit 100 is coupled between the 3rd switch S 13 and the 4th switch S 14.
Get back to shown in Figure 1B, similar in appearance to the first switches set 210, second switch group 220 comprises first switch S 21 and second switch S22 and the 3rd switch S 23 of connecting and the 4th switch S 24 of series connection, wherein the 3rd switch S 23 is coupled between the first switch S 21 and second switch S22, and the second inductance L 2 of the first drive unit 100 is coupled between the 3rd switch S 23 and the 4th switch S 24.
As shown in Figure 1B, similar in appearance to the first switches set 210, the 3rd switches set 230 comprises first switch S 31 and second switch S32 and the 3rd switch S 33 of connecting and the 4th switch S 34 of series connection, wherein the 3rd switch S 33 is coupled between the first switch S 31 and second switch S32, and the 3rd inductance L 3 of the first drive unit 100 is coupled between the 3rd switch S 23 and the 4th switch S 34.
With regard to switch kind, the first switch, second switch, the 3rd switch and the 4th switch are for example relay, mos field effect transistor (MOSFET), igbt (Insulated Gate Bipolar Transistor, IGBT) or other suitable switch element.In the first switch, second switch, the 3rd switch and the 4th switch, the kind of at least two can be identical or different, for example, the switch of cut-off while running up (explanation after holding) (, the first switch S 21, S31 and second switch S12, S32 in this example) can be relay, and other switch can be MOSFET, IGBT or its combination.
Please refer to Fig. 2, the equivalent circuit diagram of drive circuit when it illustrates many drive units low-speed running of Figure 1A.In the time of many drive units low-speed running, all the first switch S 11, S21 and S31 and all second switch S21, S22 and S32 conducting, make the circuit structure of the drive circuit 200 of Fig. 2 equal the circuit structure of the drive circuit 400 that drives the second drive unit 300, wherein the voltage difference of node a to b equals in fact the voltage difference of node c to d, input electric energy (voltage difference of node c to d) directly transfers to drive circuit 400 via drive circuit 200, drives the second drive unit 300 for drive circuit 400.
Please refer to Fig. 3 A, its many drive units that illustrate Figure 1A run up and the current path figure of drive circuit when the 4th switch conduction.In the time that many drive units 10 run up, to control the first switches set 210, its first switch S 11 and the 3rd switch S 13 conductings and second switch S12 and the 4th switch S 14 are ended; To control second switch group 220, its first switch S 21 and the 3rd switch S 23 are ended, second switch S22 conducting, and the 4th switch S 24 selectivity conducting or cut-offs.In the time of the 4th switch S 24 conducting, as shown in Figure 3A, current path (as the thick line of figure), through the first switch S 11 and the 3rd switch S 13, the first inductance L 1 of the first drive unit 100 and the 4th switch S 24 of the second inductance L 2 and second switch group 220 of the first switches set 210, is used series connection the first inductance L 1 and the second inductance L 2.
Please refer to Fig. 3 B, it illustrates the equivalent circuit diagram of the drive circuit of Fig. 3 A.The value of when many drive units 10 run up and when the 4th switch S 24 conducting, inductance L ' charge, wherein inductance L ' equals the first inductance L 1 equivalence value of connecting with the second inductance L 2.
Please refer to Fig. 4 A, the current path figure of drive circuit when its many drive units that illustrate Figure 1A run up and the 4th switch ends.When many drive units 10 run up and when the 4th switch S 24 is ended, current path (as the thick line of figure) is through diode D23 and the second switch S22 of the first switch S 11 and the 3rd switch S 13, the first inductance L 1 of the first drive unit 100 and the 3rd switch S 23 of the second inductance L 2 and second switch group 220 of the first switches set 210, with the voltage of the node a that raises.Because the second drive unit 300 is coupled to drive circuit 200, therefore can obtaining, the second drive unit 300 boosts.Specifically, due to the design of drive circuit 200, can use the first drive unit 100 inductance own to reach the effect of boosting, make the second drive circuit 400 can utilize high voltage, and in the time running up, drive the second drive unit 300, to promote its rotating speed.
Please refer to Fig. 4 B, it illustrates the equivalent circuit diagram of the drive circuit of Fig. 4 A.When many drive units 10 run up and when the 4th switch S 24 is ended, inductance L ' drive circuit 400 is carried out to charging pressure-boosting, now the voltage difference of node a to b is greater than the voltage difference of node c to d.Drive circuit 400 utilizes this electric energy boosting to drive the second drive unit 300.
Please refer to Fig. 5, it illustrates the signal schematic representation of embodiment of the present invention control the 4th switch.The conducting of the 4th switch S 24 and cut-off are controlled by pulse width modulating signal (Pulse-Width Modulation, PWM) control, wherein pulse duration ratio P and voltage Vcd determine voltage Vab, as shown in the formula (1), wherein pulse duration ratio P is the ratio (P=D/T) that pulse duration D accounts for cycle T, voltage Vcd is the voltage difference of node c to d, and it is for example the battery voltage of many drive units 10, and voltage Vab is the voltage difference of node a to b.
Vab=Vcd/(1-P)......................................................(1)
Please refer to Fig. 6 A and Fig. 6 B, Fig. 6 A illustrates the first drive unit of Figure 1A and rotating speed-torsional performance figure of the second drive unit, and Fig. 6 B illustrates the first drive unit of Fig. 6 A and the synthetic performance map of the rotating speed-moment of torsion of the second drive unit.As shown in Figure 6A, curve C 1 represents rotating speed-torsional performance curve of the first drive unit 100, and curve C 2 represents rotating speed-torsional performance curve of the second drive unit 300.In this example, the first drive unit 100 is take zero motor as example, and the second drive unit 300 is take high-speed motor as example.In the time omitting this routine drive circuit 200, curve C 1 and C2's is synthetic as the curve C 12 of Fig. 6 B.In the time of many drive unit 10 this routine drive circuits 200 of application, curve C 1 and C2's is synthetic as the curve C 12 ' of Fig. 6 B, and apparently, the rotating speed of many drive units 10 under running up promotes more.
Although above-described embodiment goes to be connected in series the first inductance L 1 and the second inductance L 2 as example explanation take current path via the first switches set 210 and second switch group 220; So as long as (1). first switch of a group in the first switches set 210, second switch group 220 and the 3rd switches set 230 and the 3rd switch conduction and second switch and the cut-off of the 4th switch, and (2). the cut-off of the first switch of another group in the first switches set 210, second switch group 220 and the 3rd switches set 230 and the 3rd switch, second switch conducting and the 4th conducting of switch selectivity or cut-off, so current path can via the first switches set 210, second switch group 220 with in the 3rd switches set 230 wantonly two and be connected in series two corresponding inductance.
Please refer to Fig. 7, the circuit diagram of the drive circuit that its many devices that illustrate another embodiment of the present invention drive.In this example, drive circuit 200 is coupled to the first drive unit 100, and comprise n the switches set being connected in parallel to each other, wherein n is equal to or greater than 3 positive integer, and for example drive circuit 200 comprises the first switches set 210, second switch group 220 ... i switches set 200i ... n switches set 200n.The first drive unit 100 is for example n phase motor, to be coupled to each switches set of drive circuit 200.
As shown in Figure 7, i switches set 200i comprises the first switches Si 1, second switch Si2, the 3rd switches Si 3 and the 4th switches Si 4, wherein the first switches Si 1 is connected with second switch Si2, the 3rd switches Si 3 is series at the 4th switches Si 4 and is coupled between the first switches Si 1 and second switch Si2, and wherein i is between 1 to n.For example, the first switches set 210 comprises the first switch S 11, second switch S12, the 3rd switch S 13 and the 4th switch S 14, wherein the first switch S 11 is connected with second switch S12, and the 3rd switch S 13 is series at the 4th switch S 14 and is coupled between the first switch S 11 and second switch S12.Again for example, n switches set 200n comprises the first switch S n1, second switch Sn2, the 3rd switch S n3 and the 4th switch S n4, wherein the first switch S n1 connects with second switch Sn2, and the 3rd switch S n3 is series at the 4th switch S n4 and is coupled between the first switch S n1 and second switch Sn2.
As shown in Figure 7, the i inductance of the first drive unit 100 is coupled between the 3rd switches Si 3 and the 4th switches Si 4 of i switches set 200i, and wherein i is between 1 to n.For example, the first inductance of the first drive unit 100 is coupled between the 3rd switch S 13 and the 4th switch S 14 of the first switches set 210.Again for example, the n inductance of the first drive unit 100 is coupled between the 3rd switch S n3 and the 4th switch S n4 of n switches set 200n.
The control mode of the structure of embodiment of the present invention drive circuit is not limited with above-described embodiment.In the drive circuit of another embodiment, at low-speed mode, first switch of first group and the second switch conducting of n switches set, first switch cut-off and the second switch conducting of second group of n switches set, first switch cut-off and the second switch conducting of the 3rd group of n switches set; In fast mode, first switch conduction of first group of n switches set, second switch cut-off, the 3rd switch conduction and the cut-off of the 4th switch, the first switch cut-off of second group of n switches set, the first switch cut-off of the 3rd group of n switches set; The 4th switch by the 4th switch of second group and the 3rd group at least one with signal controlling cut-off or conducting, can make the second drive unit obtain and boost.Below further illustrate.
Please refer to Fig. 8, it illustrates the circuit diagram according to many drive units of another embodiment of the present invention.Many drive units 10 ' are for example the devices that the vehicles, toolroom machine and other need outputting power, and it comprises the first drive unit 100, drive circuit 200 ', the second drive unit 300 and drive circuit 400.Compared to above-mentioned drive circuit 200, in the drive circuit 200 ' of the present embodiment, no matter be low-speed mode or fast mode, the first switch S 11 conductings of the first switches set 210, the first switch S 21 of second switch group 220 are ended, and the first switch S 31 of the 3rd switches set 230 ends, the conducting of rest switch or cut-off are determined by low speed or fast mode.
Please refer to Fig. 9, the equivalent circuit diagram of drive circuit when it illustrates many drive units low-speed running of Fig. 8.In the time of many drive unit 10 ' low-speed runnings, the first switch S 11 of the first switches set 210 and second switch S12 conducting, the first switch S 21 of second switch group 220 is ended and second switch S22 conducting, and the first switch S 31 of the 3rd switches set 230 is ended and second switch S32 conducting, so, make the circuit structure of drive circuit 200 ' be equivalent to the circuit structure of the drive circuit 400 that drives the second drive unit 300, wherein the voltage difference of node a to b equals in fact the voltage difference of node c to d, input electric energy (voltage difference of node c to d) directly transfers to drive circuit 400 via drive circuit 200 ', drive the second drive unit 300 for drive circuit 400.
Please refer to Figure 10, the equivalent circuit diagram of drive circuit when its many drive units that illustrate Fig. 8 run up.In the time that many drive units 10 run up, the first switch S 11 conductings of the first switches set 210, second switch S12 cut-off, the 3rd switch S 13 conductings and the 4th switch S 14 is ended, the first switch S 21 of second switch group 220 is ended, and the first switch S 31 of the 3rd switches set 230 is ended, pass through to control the 4th switch S 24 of second switch group 220 and the 4th switch S 34 of the 3rd switches set 230 with pulse-modulated signal control in addition, the second drive unit 300 can be obtained and boost.By the 4th switch S 24 of control second switch group 220 and the 4th switch S 34 of the 3rd switches set 230 at least one, can obtain different current characteristicss.Below illustrate.
Please refer to Figure 11 A and Figure 11 B, Figure 11 A illustrates the equivalent circuit diagram of a kind of control method that runs up of many drive units of Fig. 8, and Figure 11 B illustrates the current characteristics figure of the drive circuit of Figure 11 A.In this example, the 4th switch S 34(Fig. 8 of (1) the 3rd switches set 230) regular cut-off and second switch S32(Fig. 8) and the 3rd switch S 33(Fig. 8) at least one also regular cut-off, make between the 3rd inductance L 3 and node a just as opening circuit; (2) with pulse width modulating signal P1(Figure 11 B) control periodically conducting or the cut-off of the 4th switch S 24 of second switch group 220; (3) the second switch S22 of second switch group 220 and the 3rd switch S 23 are ended simultaneously, and the diode D23 of second switch S22 and the diode D23 of the 3rd switch S 23 are series between node a and the 4th switch S 24.So, can obtain the distribution of the electric current I 2 of flow through the first inductance L 1 and the second inductance L 2.In another example, the only cut-off of the second switch S22 of second switch group 220 and the 3rd switch S 23, and another can conducting or cut-off, make the diode D23 of second switch S22 and the diode D23 of the 3rd switch S 23 only one be coupled between node a and the 4th switch S 24.Be series between node a and the 4th switch S 24 compared to diode D22 and D23, diode D22 and diode D23 only one be coupled between node a and the 4th switch S 24 and can reduce impedance.In another example, can change waveform and/or the phase place of pulse width modulating signal P1, to obtain the distribution of different electric current I 2.
Please refer to Figure 12 A and Figure 12 B, the run up equivalent circuit diagram of control method of the another kind that Figure 12 A illustrates many drive units of Fig. 8, and Figure 12 B illustrates the current characteristics figure of the drive circuit of Figure 12 A.In this example, the 4th switch S 24(Fig. 8 of (1) second switch group 220) regular cut-off and second switch S22(Fig. 8) and the 3rd switch S 23(Fig. 8) at least one also regular cut-off, make between the second inductance L 2 and node a just as opening circuit; (2) with pulse width modulating signal P2(Figure 12 B) control periodically conducting or the cut-off of the 4th switch S 34 of the 3rd switches set 230; The second switch S32 of (3) the 3rd switches set 230 and the 3rd switch S 33 are ended simultaneously, and the diode D33 of second switch S32 and the diode D33 of the 3rd switch S 33 are series between node a and the 4th switch S 34.So, can obtain the distribution of the electric current I 3 of flow through the first inductance L 1 and the 3rd inductance L 3.In another example, the only cut-off of the second switch S32 of the 3rd switches set 230 and the 3rd switch S 33, and another can conducting or cut-off, make the diode D33 of second switch S32 and the diode D33 of the 3rd switch S 33 only one be coupled between node a and the 4th switch S 34.Be series between node a and the 4th switch S 34 compared to diode D32 and D33, diode D32 and diode D33 only one be coupled between node a and the 4th switch S 34 and can reduce impedance.In another example, can change waveform and/or the phase place of pulse width modulating signal P2, to obtain the distribution of different electric current I 3.
Please refer to Figure 13 A and Figure 13 B, the run up equivalent circuit diagram of control method of the another kind that Figure 13 A illustrates many drive units of Fig. 8, and Figure 13 B illustrates the current characteristics figure of the drive circuit of Figure 13 A.In this example, with pulse width modulating signal P1(Figure 11 B) control the 4th periodically conducting or cut-offs of switch S 24 of second switch group 220, and simultaneously with pulse width modulating signal P2(Figure 12 B) control the 4th periodically conducting or cut-offs of switch S 34 of the 3rd switches set 230.The control of rest switch S22 and S23 is similar in appearance to Figure 11 A, and the control of rest switch S32 and S33 is similar in appearance to Figure 12 A, holds this and repeats no more.In the time that pulse width modulating signal P1 spends with the phase phasic difference 180 of pulse width modulating signal P2, the electric current I 2 of the first inductance L 1 and the second inductance L 2 of flowing through is confluxed into a constant current It with the electric current I 3 of flow through the first inductance L 1 and the 3rd inductance L 3, as shown in Figure 13 B.
In sum, although the present invention with preferred embodiment openly as above, so it is not in order to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on appended claims confining spectrum.
Claims (20)
1. a drive unit more than, comprising:
One first drive unit, comprises n inductance, and wherein n is equal to or greater than 3 positive integer;
One second drive unit; And
One drive circuit, be coupled to this first drive unit and this second drive unit, and comprise n the switches set being connected in parallel to each other, respectively this switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, wherein this first switch is connected with this second switch, the 3rd switch series is coupled to the 4th switch and is coupled between this first switch and this second switch, the i inductance of this first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n;
Wherein, at a low-speed mode, respectively this first switch and respectively this second switch conducting; In a fast mode, this first switch of one first group of this n switches set and the 3rd switch conduction and this second switch and the cut-off of the 4th switch, and this first switch of one second group of this n switches set and the cut-off of the 3rd switch, this second switch conducting, and this 4th conducting of switch selectivity or cut-off of second group of this n switches set is used this second drive unit acquisition is boosted.
2. many drive units as claimed in claim 1, wherein this 4th switch of second group is by pulse width modulating signal control.
3. many drive units as claimed in claim 1, wherein, respectively this first switch of this switches set, this second switch, the 3rd switch and the 4th switch are relay, mos field effect transistor or igbt.
4. many drive units as claimed in claim 1, wherein, these of cut-off the first switch and these second switches are relays.
5. many drive units as claimed in claim 1, wherein, this first drive unit and this second drive unit are motors.
6. a drive circuit, is coupled to one first drive unit and one second drive unit, and this first drive unit comprises n inductance, and wherein, n is equal to or greater than 3 positive integer, and this drive circuit comprises:
The n a being connected in parallel to each other switches set, respectively this switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, this first switch is connected with this second switch, the 3rd switch series is coupled to the 4th switch and is coupled between this first switch and this second switch, the i inductance of this first drive unit is coupled between the 3rd switch and the 4th switch, wherein, i is between 1 to n;
Wherein, at a low-speed mode, respectively this first switch and respectively this second switch conducting; In a fast mode, this first switch of one first group of this n switches set and the 3rd switch conduction and this second switch and the cut-off of the 4th switch, and this first switch of one second group of this n switches set and the cut-off of the 3rd switch, this second switch conducting, and this 4th conducting of switch selectivity or cut-off of second group of this n switches set is used this second drive unit acquisition is boosted.
7. drive circuit as claimed in claim 6, wherein, this 4th switch of second group is by pulse width modulating signal control.
8. drive circuit as claimed in claim 6, wherein, respectively this first switch of this switches set, this second switch, the 3rd switch and the 4th switch are relay, mos field effect transistor or igbt.
9. drive circuit as claimed in claim 6, wherein, these of cut-off the first switch and these second switches are relays.
10. drive circuit as claimed in claim 6, wherein, this first drive unit and this second drive unit are motors.
Drive unit more than 11. 1 kinds, comprising:
One first drive unit, comprises n inductance, and wherein n is equal to or greater than 3 positive integer;
One second drive unit; And
One drive circuit, be coupled to this first drive unit and this second drive unit, and comprise n the switches set being connected in parallel to each other, respectively this switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, wherein this first switch is connected with this second switch, the 3rd switch series is coupled to the 4th switch and is coupled between this first switch and this second switch, the i inductance of this first drive unit is coupled between the 3rd switch and the 4th switch, and wherein i is between 1 to n;
At a low-speed mode, this first switch conduction of one first group and this second switch conducting of this n switches set, this cut-off of the first switch and this second switch conducting of one second group of this n switches set, this cut-off of the first switch and this second switch conducting of one the 3rd group of this n switches set;
At a fast mode, this this first switch conduction of first group, this second switch cut-off, the 3rd switch conduction and the cut-off of the 4th switch of this n switches set, this this first switch cut-off of second group of this n switches set, this first switch cut-off of the 3rd group of this n switches set; The 4th switch by this 4th switch of second group and the 3rd group at least one with signal controlling cut-off or conducting, this second drive unit is obtained and boosts.
12. many drive units as claimed in claim 11, wherein control the pulse width modulating signal of this 4th switch of second group of this n switches set and spend with the phase phasic difference 180 of the pulse width modulating signal of the 4th switch of the 3rd group of this n switches set of control.
13. many drive units as claimed in claim 11, wherein this regular cut-off of the 4th switch of second group and this this second switch of second group and at least one regular cut-off of the 3rd switch, and the 4th switch of the 3rd group is with pulse width modulating signal control, cut-off in this second switch of the 3rd group and the 3rd switch and this second switch of the 3rd group and another conducting or the cut-off of the 3rd switch.
14. many drive units as claimed in claim 11, wherein this second switch and at least one regular cut-off of the 3rd switch of the regular cut-off of the 4th switch of the 3rd group and the 3rd group, and this 4th switch of second group is with pulse width modulating signal control, cut-off in this this second switch of second group and the 3rd switch and another conducting or the cut-off of this this second switch of second group and the 3rd switch.
15. many drive units as claimed in claim 11, wherein when the 4th switch of this 4th switch of second group and the 3rd group is during all with pulse width modulating signal control, in this this second switch of second group and the 3rd switch one cut-off and another cut-off or the conducting of this this second switch of second group and the 3rd switch, and in this second switch of the 3rd group and the 3rd switch one ends and this second switch of the 3rd group and another cut-off or the conducting of the 3rd switch.
16. 1 kinds of drive circuits, are coupled to one first drive unit and one second drive unit, and this first drive unit comprises n inductance, and wherein, n is equal to or greater than 3 positive integer, and this drive circuit comprises:
The n a being connected in parallel to each other switches set, respectively this switches set comprises one first switch, a second switch, one the 3rd switch and one the 4th switch, this first switch is connected with this second switch, the 3rd switch series is coupled to the 4th switch and is coupled between this first switch and this second switch, the i inductance of this first drive unit is coupled between the 3rd switch and the 4th switch, wherein, i is between 1 to n;
At a low-speed mode, this first switch conduction of one first group and this second switch conducting of this n switches set, this cut-off of the first switch and this second switch conducting of one second group of this n switches set, this cut-off of the first switch and this second switch conducting of one the 3rd group of this n switches set;
At a fast mode, this this first switch conduction of first group, this second switch cut-off, the 3rd switch conduction and the cut-off of the 4th switch of this n switches set, this this first switch cut-off of second group of this n switches set, this first switch cut-off of the 3rd group of this n switches set; The 4th switch by this 4th switch of second group and the 3rd group at least one with signal controlling cut-off or conducting boost so that this second drive unit obtains.
17. drive circuits as claimed in claim 16, wherein control the pulse width modulating signal of this 4th switch of second group of this n switches set and spend with the phase phasic difference 180 of the pulse width modulating signal of the 4th switch of the 3rd group of this n switches set of control.
18. drive circuits as claimed in claim 16, wherein this regular cut-off of the 4th switch of second group and this this second switch of second group and at least one regular cut-off of the 3rd switch, and the 4th switch of the 3rd group is with pulse width modulating signal control, cut-off in this second switch of the 3rd group and the 3rd switch and this second switch of the 3rd group and another conducting or the cut-off of the 3rd switch.
19. drive circuits as claimed in claim 16, wherein this second switch and at least one regular cut-off of the 3rd switch of the regular cut-off of the 4th switch of the 3rd group and the 3rd group, and this 4th switch of second group is with pulse width modulating signal control, cut-off in this this second switch of second group and the 3rd switch and another conducting or the cut-off of this this second switch of second group and the 3rd switch.
20. drive circuits as claimed in claim 16, wherein when the 4th switch of this 4th switch of second group and the 3rd group is during all with pulse width modulating signal control, in this this second switch of second group and the 3rd switch one cut-off and another cut-off or the conducting of this this second switch of second group and the 3rd switch, and in this second switch of the 3rd group and the 3rd switch one ends and this second switch of the 3rd group and another cut-off or the conducting of the 3rd switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101140095 | 2012-10-30 | ||
| TW101140095 | 2012-10-30 |
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| CN103795301A true CN103795301A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310111608.7A Pending CN103795301A (en) | 2012-10-30 | 2013-04-01 | Multi-driving device and driving circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110611460A (en) * | 2019-09-10 | 2019-12-24 | 东南大学 | High-power motor driving system based on modular multilevel converter |
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Application publication date: 20140514 |