CN201181923Y - Five-level switch reluctance motor power converter - Google Patents
Five-level switch reluctance motor power converter Download PDFInfo
- Publication number
- CN201181923Y CN201181923Y CNU2008200350880U CN200820035088U CN201181923Y CN 201181923 Y CN201181923 Y CN 201181923Y CN U2008200350880 U CNU2008200350880 U CN U2008200350880U CN 200820035088 U CN200820035088 U CN 200820035088U CN 201181923 Y CN201181923 Y CN 201181923Y
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- controlled switch
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- switch
- power converter
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- 238000004804 winding Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a power transducer for a five-level switched reluctance motor, which is composed of electric control switches controlling the electrification of windings, filter capacitors, triphase motor windings, fly-wheel diodes and a controller. The inlet and the outlet ends of the triphase motor windings are connected with the two cascaded upper electric control switches and the two cascaded lower electric control switches, which control the electrification of the windings; each switch is connected with the fly-wheel diodes in parallel; and all control ends controlling the on-off of the switches are connected with the output ends of the controller. The power transducer can reduce on-off frequency, thus reducing the loss of a device and increasing the efficiency of a system, so that the switched reluctance motor can be applied in the high-power case, so the power transducer has wide practicability.
Description
Technical field
The utility model relates to a kind of power converter of switch reluctance motor, specifically, relates to a kind of powerful five-level switch magnetic resistance motor power converter.
Background technology
The power inverter of traditional switched reluctance machines makes it be difficult in large-power occasions (more than the 500kW) and is used owing to the restriction of power device self-capacity.And level number is less causes the power device switch often, and the loss of device is big, and system effectiveness is low, and the degree of reliability is not high, does not satisfy and produces actual requirement.
The utility model content
The technical problems to be solved in the utility model is: a kind of novel power converter of switch reluctance motor is provided, to reduce the switch number of times of power device, reduces the loss of device, improve the efficient of system.
To achieve these goals, the utility model five-level switch magnetic resistance motor power converter is made up of direct current capacitor, electric-controlled switch, diode and controller.Two DC filter capacitors are connected on the power supply input side, after two DC filter capacitors series connection, in parallel with two upper electric-controlled switchs that are in series with fly-wheel diode with two the next electric-controlled switchs that are in series with fly-wheel diode, base stage at higher level's electric-controlled switch of the emitter of two upper electric-controlled switch subordinate electric-controlled switchs and two the next electric-controlled switchs is in series with three motor windings indirectly respectively, two direct current capacitor mid points are connected with the series connection mid point of two upper electric-controlled switchs and two the next electric-controlled switchs by a diode, and the control end of every electric-controlled switch links to each other with controller.Electric-controlled switch is a semiconductor field, and series system is: one source electrode is received second drain electrode.
The utility model provides a kind of novel power converter of switch reluctance motor, reduces the switch number of times of power device, reduces the loss of device, improves the efficient of system.Switched reluctance machines can be used in large-power occasions.
Description of drawings
Fig. 1 is control circuit figure of the present utility model.
Fig. 2 is the switched reluctance machines structural representation.
Fig. 3 is a working state figure of the present utility model.
Embodiment
Below in conjunction with accompanying drawing an example of the present utility model is described further:
In Fig. 1, with the input power filter and the direct current capacitor U1 of direct voltage is provided to motor, after the U2 series connection, with be in series with sustained diode a2, Db2, two upper electric-controlled switch Sa1 of Dc2, Sa2, Sb1, Sb2, Sc1, Sc2 and be in series with sustained diode a1, Db1, two the next electric-controlled switch Sa3 of Dc1, Sa4, Sb3, Sb4, Sc3, the Sc4 parallel connection is at two upper electric-controlled switch electric-controlled switch Sa2 of subordinate, Sb2, higher level's electric-controlled switch Sa3 of the drain electrode of Sc2 and two the next electric-controlled switchs, Sb3, the source electrode of Sc3 are in series with three motor windings La indirectly respectively, Lb, Lc, two direct current capacitor U1, the U2 mid point is by a diode D1, D2, D3 and two upper electric-controlled switch Sa1, Sa2, Sb1, Sb2, Sc1, Sc2 and two the next electric-controlled switch Sa3, Sa4, Sb3, Sb4, Sc3, the series connection mid point of Sc4 connects, and the control end of every electric-controlled switch links to each other with controller.Electric-controlled switch is a semiconductor field, and two series systems are: second source electrode is received in first drain electrode.
The operation logic of motor is followed the magnetic resistance minimum principle---and magnetic flux is always along the path closure of magnetic resistance minimum, and the rotor core with definite shape must make the main shaft of oneself and the dead in line in magnetic field when moving to the minimum reluctance position.Therefore, as long as switch on according to the phase winding of the given son of a graded, motor rotor will rotate continuously.During for each phase winding energising, this circuit has 5 kinds of operating states, is example mutually with A:
State 2: main switching device Sa1, Sa2, Sa3, the Sa4 conducting, winding current is shown in ia among Fig. 3 (a), and the voltage that this moment, winding bore is 2U.
State 1: main switching device Sa1, Sa2, the Sa3 conducting, winding current is shown in ia among Fig. 3 (b), and the voltage that this moment, winding bore is U.
State 0: main switching device Sa3, the Sa4 conducting, winding current is shown in ia among Fig. 3 (c), and the voltage that this moment, winding bore is 0.
State-1: main switching device Sa2 conducting, diode Da1, D1, winding current are shown in ia among Fig. 3 (d), and the voltage that this moment, winding bore is-U.
State-2: diode Da1, Da2, D1, D2, winding current are shown in ia among Fig. 3 (e), and the voltage that this moment, winding bore is-2U.
The concrete control procedure of the utility model in switched Reluctance Motor Control is example with A mutually:
2. whether the current rotating speed of 1. at first judging motor be greater than 50% of rated speed, not 5..
2. four of the A phase switching device Sa1, Sa2, the full conducting of Sa3, Sa4 judge that 3. current electric current whether greater than given electric current, is, do not go 2..
3. following two switching device Sa3 of A phase, the Sa4 conducting judges that 2. current electric current whether less than given electric current, is, does not go 4..
4. four of the A phase switching device Sa1, Sa2, Sa3, Sa4 complete shut-downs break, and judge that 2. current electric current whether less than given electric current, is, do not go 4..
5. three of the A phase switching device Sa1, Sa2, the full conducting of Sa3 judge that 6. current electric current whether greater than given electric current, is, do not go 5..
6. following two switching device Sa3 of A phase, the Sa4 conducting judges that 7. current electric current whether greater than given electric current, is, does not go 5..
7. second of the A phase switching device Sa2 conducting judges that 7. current electric current whether greater than given electric current, is, do not go 5..
Generally speaking, compare with the power inverter that existing switched reluctance machines is traditional, the utility model has the advantages that:
1, the up and down half-bridge of each phase is connected with two pipes, under the same motor capacity, and the utility model device Capacity only have half of conventional transducers device capacity, reduced system cost.
2, improve the operating efficiency of motor. Adopt the utility model, can reduce the on-off times of device, reduce The loss of system, the efficient of raising system.
3, since the voltage that bears of device of the present utility model be DC voltage half, so at the equivalent device capacity Situation under, switched Reluctance Motor Control System can be applied to large-power occasions.
Number in the figure is described as follows:
Sa1, Sa2, Sa3, Sa4:A phase electric-controlled switch;
Da1, Da2, D1, D2:A phase fly-wheel diode;
Sb1, Sb2, Sb3, Sb4:B phase electric-controlled switch;
Db1, Db2, D3, D4:B phase fly-wheel diode;
Sc1, Sc2, Sc3, Sc4:C phase electric-controlled switch;
Dc1, Dc2, D5, D6:C phase fly-wheel diode;
U1, U2: dc capacitor;
La, Lb, Lc:A, B, C three phase electric machine winding.
Claims (2)
1. five-level switch magnetic resistance motor power converter, it is characterized in that: two DC filter capacitors (U1, U2) after the series connection, with be in series with fly-wheel diode (Da2, Db2, Dc2) two upper electric-controlled switch (Sa1, Sa2, Sb1, Sb2, Sc1, Sc2) and be in series with fly-wheel diode (Da1, Db1, two the next electric-controlled switch (Sa3 Dc1), Sa4, Sb3, Sb4, Sc3, Sc4) parallel connection, at two upper electric-controlled switch subordinates electric-controlled switch (Sa2, Sb2, higher level's electric-controlled switch (Sa3 of emitter Sc2) and two the next electric-controlled switchs, Sb3, Sc3) base stage is in series with three motor windings (La indirectly respectively, Lb, Lc), two direct current capacitor (U1, U2) mid point is by a diode (D1, D2, D3) with two upper electric-controlled switch (Sa1, Sa2, Sb1, Sb2, Sc1, Sc2) and two the next electric-controlled switch (Sa3, Sa4, Sb3, Sb4, Sc3, Sc4) series connection mid point connects, and the control end of every electric-controlled switch links to each other with controller.
2. five-level switch magnetic resistance motor power converter according to claim 1 is characterized in that: described electric-controlled switch is a semiconductor field, and series system is: one source electrode is received second drain electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200350880U CN201181923Y (en) | 2008-04-11 | 2008-04-11 | Five-level switch reluctance motor power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200350880U CN201181923Y (en) | 2008-04-11 | 2008-04-11 | Five-level switch reluctance motor power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181923Y true CN201181923Y (en) | 2009-01-14 |
Family
ID=40251415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200350880U Expired - Lifetime CN201181923Y (en) | 2008-04-11 | 2008-04-11 | Five-level switch reluctance motor power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201181923Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403951A (en) * | 2011-11-30 | 2012-04-04 | 徐州中矿大传动与自动化有限公司 | Output voltage estimation method for three-level current transformer |
| CN103560741A (en) * | 2013-11-15 | 2014-02-05 | 哈尔滨工业大学 | Redundant driver of switch reluctance motor |
| CN110107593A (en) * | 2019-04-19 | 2019-08-09 | 微控物理储能研究开发（深圳）有限公司 | Without biased magnetic bearing coil control circuit and control method |
-
2008
- 2008-04-11 CN CNU2008200350880U patent/CN201181923Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403951A (en) * | 2011-11-30 | 2012-04-04 | 徐州中矿大传动与自动化有限公司 | Output voltage estimation method for three-level current transformer |
| CN103560741A (en) * | 2013-11-15 | 2014-02-05 | 哈尔滨工业大学 | Redundant driver of switch reluctance motor |
| CN110107593A (en) * | 2019-04-19 | 2019-08-09 | 微控物理储能研究开发（深圳）有限公司 | Without biased magnetic bearing coil control circuit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090114 Effective date of abandoning: 20080411 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090114 Effective date of abandoning: 20080411 |