CN202309507U - Braking unit and power conversion equipment - Google Patents
Braking unit and power conversion equipment Download PDFInfo
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- CN202309507U CN202309507U CN201120397195XU CN201120397195U CN202309507U CN 202309507 U CN202309507 U CN 202309507U CN 201120397195X U CN201120397195X U CN 201120397195XU CN 201120397195 U CN201120397195 U CN 201120397195U CN 202309507 U CN202309507 U CN 202309507U
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Abstract
The utility model provides a braking unit and power conversion equipment. According to the braking unit, two low-voltage-resistance switch tubes are connected in series by utilizing neutral point clamping function of a capacitor, so that braking function of a relatively higher voltage grade is realized. Compared with the conventional braking unit, the braking unit can be applied to medium-voltage power conversion equipment such as 1,140V, 2,300V and 3,300V equipment and the like. Besides, due to low cost of the low-voltage-resistance switch tubes, the whole system is low in cost.
Description
Technical field
The utility model relates to the electron electric power field, is specifically related to a kind of brake unit and power converter apparatus.
Background technology
At present, power converter apparatus (like frequency converter, train traction inverter etc.) has been widely used in Motor Control Field.Motor (as slowing down, transfer weight etc.) in certain some application scenarios can be converted into electric energy with mechanical energy, will cause this moment the busbar voltage of power converter apparatus to raise, if do not take measures, will cause power converter apparatus overvoltage fault.In order to prevent power converter apparatus overvoltage fault, can give power converter apparatus additional configuration brake unit usually, the brake resistance in this brake unit can consume unnecessary energy, thereby guarantees the safe operation of power converter apparatus.
The circuit diagram of common brake unit is as shown in Figure 1, and this brake unit mainly is made up of capacitor C 1, diode D1, switching tube Q1, B1 circuit network, B2 circuit network and brake resistance R; Wherein, DC+ representes the high potential of the busbar voltage of power converter apparatus, and DC-representes the electronegative potential of the busbar voltage of power converter apparatus, and promptly the busbar voltage of power converter apparatus directly is carried in capacitor C 1 two ends; Brake resistance R one end is electrically connected the D1 negative pole through the B1 circuit network, and the other end is electrically connected the D1 positive pole through the B2 circuit network; Switching tube Q1 base stage is used to receive driving pulse P.When the Q1 conducting, brake resistance R can consume the excess energy that busbar voltage raises and produced.
Find in the practice; Brake unit shown in Figure 1 is applied to be less than or equal to the power converter apparatus of 690V voltage usually; Then require switching tube Q1 withstand voltage very high (like 3300V) for medium voltage electricity conversion equipments such as 1140V, 2300V, 3300V; And the cost of withstand voltage very high switching tube is very expensive, thereby increases the cost of total system.
The utility model content
The utility model provides a kind of brake unit and power converter apparatus, and this brake unit can be applicable to medium voltage electricity conversion equipments such as 1140V, 2300V, 3300V, and the cost of total system is low.
A kind of brake unit comprises:
First capacitor C 1 (11), second capacitor C 2 (12), the first switching tube Q1 (13), second switch pipe Q2 (14), the first clamp diode D1 (15), the second clamp diode D2 (16) and brake resistance R (17);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (13) control pin is electrically connected with switching tube driving pulse output; Q1 (13) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (13) emitter is connected with D1 (15) negative electricity, and D1 (15) is anodal to be connected with D2 (16) negative electricity; D2 (16) is anodal to be electrically connected with Q2 (14) collector electrode, and Q2 (14) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q2 (14) control pin is electrically connected with switching tube driving pulse output; R (17) one ends are electrically connected Q1 (13) emitter, and the other end is electrically connected Q2 (14) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of D1 and D2.
Correspondingly, a kind of power converter apparatus comprises above-mentioned brake unit; Wherein, the busbar voltage hot end of power converter apparatus is electrically connected said C1 (11) one ends in the said brake unit, and the busbar voltage cold end of said power converter apparatus is electrically connected said C2 (12) one ends in the said brake unit.
Another kind of brake unit comprises:
First capacitor C 1 (11), second capacitor C 2 (12), the first insulated gate bipolar transistor IGBT module 1 (22), the second insulated gate bipolar transistor IGBT module 2 (23) and brake resistance R (17);
The said first insulated gate bipolar transistor IGBT module 1 (22) comprises the first switching tube Q1 (221), second switch pipe Q2 (222), first sustained diode (223) and second sustained diode (224);
The said second insulated gate bipolar transistor IGBT module 2 (23) comprises the 3rd switching tube Q3 (231), the 4th switching tube Q4 (232), the 3rd sustained diode (233) and the 4th sustained diode (234);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (221) control pin is electrically connected with switching tube driving pulse output; Q1 (221) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (221) emitter is connected with D (223) positive electrical, and D (223) negative pole is connected with Q1 (221) collector electrode; Q1 (221) emitter is electrically connected with Q2 (222) collector electrode, and Q2 (222) emitter is connected with D (224) positive electrical, and D (224) negative pole is electrically connected with the collector electrode of Q2 (222);
Wherein, Q3 (231) collector electrode is electrically connected with Q2 (222) emitter, and Q3 (231) emitter is connected with D (233) positive electrical, and D (233) negative pole is connected with Q3 (231) collector electrode; Q3 (231) emitter is electrically connected with Q4 (234) collector electrode, and Q4 (234) control pin is electrically connected with switching tube driving pulse output; Q4 (234) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q4 (234) emitter is connected with D (234) positive electrical, and D (234) negative pole is electrically connected with the collector electrode of Q4 (232); R (17) one ends are electrically connected Q1 (221) emitter and Q2 (222) collector electrode, and the other end is electrically connected Q3 (231) emitter and Q4 (232) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of Q2 (222) and Q3 (231).
Correspondingly, a kind of power converter apparatus comprises above-mentioned another kind of brake unit; Wherein, the busbar voltage hot end of power converter apparatus is electrically connected said C1 (11) one ends in the above-mentioned brake unit, and the busbar voltage cold end of said power converter apparatus is electrically connected said C2 (12) one ends in the above-mentioned brake unit.
The brake unit that the utility model provides utilizes electric capacity mid point clamper function; Can select two low withstand voltage switching tubes to connect; Realize the more braking function of voltage levels; Thereby can be applied in the medium voltage electricity conversion equipments (like frequency converter) such as 1140V, 2300V, 3300V, and utilize the low-cost advantage of low withstand voltage switching tube, can realize the low cost of whole system.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit diagram of existing brake unit;
The circuit diagram of a kind of brake unit that Fig. 2 provides for the utility model;
The circuit diagram of a kind of power converter apparatus that Fig. 3 provides for the utility model;
The circuit diagram of the another kind of brake unit that Fig. 4 provides for the utility model;
The circuit diagram of the another kind of power converter apparatus that Fig. 5 provides for the utility model.
Embodiment
The accompanying drawing that will combine the utility model below carries out clear, intactly description to the technical scheme in the utility model, and obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of brake unit, and this brake unit can be applicable to medium voltage electricity conversion equipments such as 1140V, 2300V, 3300V, and the cost of total system is low.In the utility model, power converter apparatus can be inversion systems such as frequency converter, track traffic inverter.
See also Fig. 2, the circuit diagram of a kind of brake unit that Fig. 2 provides for the utility model.As shown in Figure 2, this brake unit can comprise:
First capacitor C 1 (11), second capacitor C 2 (12), the first switching tube Q1 (13), second switch pipe Q2 (14), the first clamp diode D1 (15), the second clamp diode D2 (16) and brake resistance R (17);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (13) control pin (like base stage) is electrically connected with switching tube driving pulse output; Q1 (13) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (13) emitter is connected with D1 (15) negative electricity, and D1 (15) is anodal to be connected with D2 (16) negative electricity; D2 (16) is anodal to be electrically connected with Q2 (14) collector electrode, and Q2 (14) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q2 (14) control pin is electrically connected with switching tube driving pulse output; R (17) one ends are electrically connected Q1 (13) emitter, and the other end is electrically connected Q2 (14) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of D1 and D2, and realize electric capacity mid point clamper function.
In the utility model; Q1 (13) control pin (like base stage), Q2 (14) control pin (like base stage) can be electrically connected with switching tube driving pulse output respectively; That is to say that Q1 (13) control pin (like base stage), Q2 (14) control pin (like base stage) can distinguish receiving key pipe driving pulse, and the starting switch plumber does.Wherein, switching tube driving pulse output is the pulse output end of switching tube drive circuit.The switching tube drive circuit is the known general knowledge of those of ordinary skills, and the utility model is not done concrete introduction.
As shown in Figure 2, in the brake unit that the utility model provides, can also comprise:
The first static voltage sharing R1 (18) and the second static voltage sharing R2 (19);
Said R1 (18) two ends are electrically connected C1 (11) two ends respectively; R2 (19) two ends are electrically connected C2 (12) two ends respectively.
As shown in Figure 2, in the brake unit that the utility model provides, can also comprise:
The first circuit network B1 (20);
Said brake resistance R (17) one ends are electrically connected the said first circuit network B1 (20) one sides, and said first circuit network B1 (20) opposite side is electrically connected Q1 (13) emitter; The said first circuit network B1 (20) is used for said brake resistance R (17) one ends are electrically connected with said Q1 (13) emitter.
As shown in Figure 2, in the power converter apparatus brake unit that the utility model provides, can also comprise:
Second circuit network B 2 (21);
Said brake resistance R (17) other end is electrically connected said second circuit network B 2 (21) one sides, and said second circuit network B 2 (21) opposite sides are electrically connected Q2 (14) collector electrode; Said second circuit network B 2 (14) is used for said brake resistance R (17) other end is electrically connected with said Q2 (14) collector electrode.
In the utility model, the said first switching tube Q1 can be insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).
As a kind of optional execution mode, said first switching tube Q1 (13) and the said first clamp diode D1 (15) can be encapsulated in the module.
In the utility model, said second switch pipe Q2 (14) also can be IGBT.
As a kind of optional execution mode, said second switch pipe Q2 (14) and the said second clamp diode D2 (16) also can be encapsulated in the module.
In the utility model, if the busbar voltage of power converter apparatus (like frequency converter) is higher than pre-set threshold value Ub, then said first switching tube Q1 (13) and second switch pipe Q2 (14) conducting, said brake resistance R this moment (17) can consume excess energy; If the busbar voltage of power converter apparatus (like frequency converter) is lower than said pre-set threshold value Ub, then said first switching tube Q1 (13) and second switch pipe Q2 (14) turn-off.
In order further to understand the brake unit that the utility model provides, describe in the face of the operation principle of brake unit shown in Figure 2 down.
In Fig. 2, the hot end DC+ of the busbar voltage Udc of power converter apparatus, cold end DC-are electrically connected C1 positive pole and C2 negative pole respectively.That is to say that busbar voltage Udc directly is loaded on the C1 and C2 of series connection.Because C1 is identical with C2,, thereby can guarantee that Q1 and Q2 can select low withstand voltage IGBT so the negative pressure on C1 and the C2 is the half the of busbar voltage Udc.When busbar voltage Udc is higher than pre-set threshold value Ub, Q1 and Q2 conducting simultaneously, at this moment busbar voltage Udc is through DC+ → Q1 → B1 → brake resistance R → B2 → Q2 → DC-discharge, and brake resistance R will consume unnecessary energy; When discharging into to a certain degree, when busbar voltage Udc was lower than pre-set threshold value Ub, Q1 and Q2 turn-offed simultaneously, and at this moment the lead-in inductance energy of brake resistance and B1, B2 is through D2, D1 afterflow, and this process time is very short, end of braking.In the entire work process, the voltage of the assembly of Q1 and D1 is not higher than C1 voltage, and the voltage of the assembly of Q2 and D2 is not higher than C2 voltage.R1 among Fig. 2 and R2 are respectively the static voltage sharing of capacitor C 1 and C2.
In practical application, Q1 and Q2 be conducting fully synchronously or shutoff ideally not, at this moment will embody the mid point clamper function of capacitor C 1 and C2.In the switching process of Q1 and Q2; Like not conducting of Q1 conducting Q2, at this moment the voltage of C1 is through Q1 → B1 → brake resistance R → B2 → D2 discharge, and the voltage of C2 is through DC+ → Q1 → B1 → brake resistance → B2 → D2 → C2 → DC-charging simultaneously; But because Q1 and nonsynchronous time of Q2 are very short; And voltage can not suddenly change on C1 and the C2, so the withstand voltage yet no variation on the assembly of the assembly of Q1 and D1 and Q2 and D2, still is the half the of Udc.Like not conducting of Q2 conducting Q1; At this moment the voltage of C2 is through D1 → B1 → brake resistance R → B2 → Q2 discharge; The voltage of C1 charges through DC+ → C1 → D1 → B1 → brake resistance → B2 → Q2 → DC-simultaneously, but because Q1 and nonsynchronous time of Q2 are very short, C1 and C2 go up voltage and can not suddenly change; Therefore the withstand voltage also no variation on the assembly of the assembly of Q1 and D1 and Q2 and D2 still is the half the of Udc.
Practice shows, in medium voltage electricity conversion equipment (more than the 1140V), adopts brake unit shown in Figure 2 lower more than 30% than the total system cost that adopts brake unit shown in Figure 1.
On the basis of brake unit shown in Figure 2; The utility model also correspondingly provides a kind of power converter apparatus; The circuit diagram of this power converter apparatus is as shown in Figure 3; Wherein, the busbar voltage hot end of this power converter apparatus is electrically connected said C1 (11) one ends in the brake unit, and the busbar voltage cold end of this power converter apparatus is electrically connected said C2 (12) one ends in the brake unit.The cost of the power converter apparatus whole system that the utility model provides is lower.
In the practical application, the brake unit that the utility model provides also can be as shown in Figure 4, comprising:
First capacitor C 1 (11), second capacitor C 2 (12), the first insulated gate bipolar transistor IGBT module 1 (22), the second insulated gate bipolar transistor IGBT module 2 (23) and brake resistance R (17);
The said first insulated gate bipolar transistor IGBT module 1 (22) comprises the first switching tube Q1 (221), second switch pipe Q2 (222), first sustained diode (223) and second sustained diode (224);
The said second insulated gate bipolar transistor IGBT module 2 (23) comprises the 3rd switching tube Q3 (231), the 4th switching tube Q4 (232), the 3rd sustained diode (233) and the 4th sustained diode (234);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (221) control pin is electrically connected with switching tube driving pulse output; Q1 (221) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (221) emitter is connected with D (223) positive electrical, and D (223) negative pole is connected with Q1 (221) collector electrode; Q1 (221) emitter is electrically connected with Q2 (222) collector electrode, and Q2 (222) emitter is connected with D (224) positive electrical, and D (224) negative pole is electrically connected with the collector electrode of Q2 (222);
Wherein, Q3 (231) collector electrode is electrically connected with Q2 (222) emitter, and Q3 (231) emitter is connected with D (233) positive electrical, and D (233) negative pole is connected with Q3 (231) collector electrode; Q3 (231) emitter is electrically connected with Q4 (234) collector electrode, and Q4 (234) control pin is electrically connected with switching tube driving pulse output; Q4 (234) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q4 (234) emitter is connected with D (234) positive electrical, and D (234) negative pole is electrically connected with the collector electrode of Q4 (232); R (17) one ends are electrically connected Q1 (221) emitter and Q2 (222) collector electrode, and the other end is electrically connected Q3 (231) emitter and Q4 (232) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of Q2 (222) and Q3 (231),, realize electric capacity mid point clamper function.
As shown in Figure 4, in the brake unit that the utility model provides, can also comprise:
The first static voltage sharing R1 (18) and the second static voltage sharing R2 (19);
Said R1 (18) two ends are electrically connected C1 (11) two ends respectively; R2 (19) two ends are electrically connected C2 (12) two ends respectively.
As shown in Figure 3, in the brake unit that the utility model provides, can also comprise:
The first circuit network B1 (20) and second circuit network B 2 (21);
R (17) one ends are electrically connected the said first circuit network B1 (20) one sides, and said first circuit network B1 (20) opposite side is electrically connected Q1 (221) emitter and Q2 (222) collector electrode; The said first circuit network B1 (20) is used for said R (17) one ends are electrically connected with said Q1 (221) emitter and Q2 (222) collector electrode;
R (17) other end is electrically connected said second circuit network B 2 (21) one sides, and said second circuit network B 2 (21) opposite sides are electrically connected Q3 (231) emitter and Q4 (232) collector electrode; Said second circuit network B 2 (21) is used for said R (17) other end is electrically connected with Q3 (231) emitter and Q4 (232) collector electrode.
In brake unit shown in Figure 4, the pipe (being the assembly of Q3 (231) and D (233)) of going up of the following pipe of IGB T1 (being the assembly of Q2 (223) and D (224)) and IGBT2 is not participated in work, is in off state always.
The brake unit that the utility model provides utilizes electric capacity mid point clamper function; Can select two low withstand voltage switching tubes to connect; Realize the more braking function of voltage levels; Thereby can be applied in the medium voltage electricity conversion equipments (like frequency converter) such as 1140V, 2300V, 3300V, and utilize the low-cost advantage of low withstand voltage switching tube, can realize the low cost of whole system.
On the basis of brake unit shown in Figure 4; The utility model also correspondingly provides another kind of power converter apparatus; The circuit diagram of this power converter apparatus is as shown in Figure 5; Wherein, the busbar voltage hot end of this power converter apparatus is electrically connected said C1 (11) one ends in the brake unit, and the busbar voltage cold end of this power converter apparatus is electrically connected said C2 (12) one ends in the brake unit.The cost of the power converter apparatus whole system that the utility model provides is lower.
More than a kind of brake unit and power converter apparatus that the utility model provided have been carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (12)
1. a brake unit is characterized in that, comprising:
First capacitor C 1 (11), second capacitor C 2 (12), the first switching tube Q1 (13), second switch pipe Q2 (14), the first clamp diode D1 (15), the second clamp diode D2 (16) and brake resistance R (17);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (13) control pin is electrically connected with switching tube driving pulse output; Q1 (13) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (13) emitter is connected with D1 (15) negative electricity, and D1 (15) is anodal to be connected with D2 (16) negative electricity; D2 (16) is anodal to be electrically connected with Q2 (14) collector electrode, and Q2 (14) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q2 (14) control pin is electrically connected with switching tube driving pulse output; R (17) one ends are electrically connected Q1 (13) emitter, and the other end is electrically connected Q2 (14) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of D1 and D2.
2. brake unit according to claim 1 is characterized in that, also comprises:
The first static voltage sharing R1 (18) and the second static voltage sharing R2 (19);
Said R1 (18) two ends are electrically connected C1 (11) two ends respectively; R2 (19) two ends are electrically connected C2 (12) two ends respectively.
3. brake unit according to claim 1 is characterized in that, also comprises:
The first circuit network B1 (20);
R (17) one ends are electrically connected the said first circuit network B1 (20) one sides, and said first circuit network B1 (20) opposite side is electrically connected Q1 (13) emitter; The said first circuit network B1 (20) is used for said R (17) one ends are electrically connected with said Q1 (13) emitter.
4. brake unit according to claim 1 is characterized in that, also comprises:
Second circuit network B 2 (21);
R (17) other end is electrically connected said second circuit network B 2 (21) one sides, and said second circuit network B 2 (21) opposite sides are electrically connected Q2 (14) collector electrode; Said second circuit network B 2 (21) is used for said R (17) other end is electrically connected with said Q2 (14) collector electrode.
5. according to claim 1,2,3 or 4 described brake units, it is characterized in that,
Said Q1 (13) is an insulated gate bipolar transistor;
Said Q2 (14) is an insulated gate bipolar transistor.
6. according to claim 1,2,3 or 4 described brake units, it is characterized in that,
Said Q1 and said D1 are encapsulated in the module;
Said Q2 and said D2 are encapsulated in the module.
7. according to claim 1,2,3 or 4 described brake units, it is characterized in that,
If the busbar voltage of said power converter apparatus is higher than pre-set threshold value Ub, then said Q1 (13) and Q2 (14) conducting, said brake resistance R (17) consumes excess energy; If the busbar voltage of said power converter apparatus is lower than said pre-set threshold value Ub, then said Q1 (13) and Q2 (14) turn-off.
8. a power converter apparatus is characterized in that, comprises aforesaid right requirement 1～7 any described brake unit; Wherein, the busbar voltage hot end of said power converter apparatus is electrically connected said C1 (11) one ends in the said brake unit, and the busbar voltage cold end of said power converter apparatus is electrically connected said C2 (12) one ends in the said brake unit.
9. a brake unit is characterized in that, comprising:
First capacitor C 1 (11), second capacitor C 2 (12), the first insulated gate bipolar transistor IGBT module 1 (22), the second insulated gate bipolar transistor IGBT module 2 (23) and brake resistance R (17);
The said first insulated gate bipolar transistor IGBT module 1 (22) comprises the first switching tube Q1 (221), second switch pipe Q2 (222), first sustained diode (223) and second sustained diode (224);
The said second insulated gate bipolar transistor IGBT module 2 (23) comprises the 3rd switching tube Q3 (231), the 4th switching tube Q4 (232), the 3rd sustained diode (233) and the 4th sustained diode (234);
Wherein, C1 (11) is identical with the capacitance of C2 (12); C1 (11) one ends are used for being electrically connected with the busbar voltage hot end of power converter apparatus, and C2 (12) one ends are used for being electrically connected with the busbar voltage cold end of power converter apparatus, and C1 (11) other end is electrically connected with C2 (12) other end;
Wherein, Q1 (221) control pin is electrically connected with switching tube driving pulse output; Q1 (221) collector electrode is electrically connected with the busbar voltage hot end of said power converter apparatus, and Q1 (221) emitter is connected with D (223) positive electrical, and D (223) negative pole is connected with Q1 (221) collector electrode; Q1 (221) emitter is electrically connected with Q2 (222) collector electrode, and Q2 (222) emitter is connected with D (224) positive electrical, and D (224) negative pole is electrically connected with the collector electrode of Q2 (222);
Wherein, Q3 (231) collector electrode is electrically connected with Q2 (222) emitter, and Q3 (231) emitter is connected with D (233) positive electrical, and D (233) negative pole is connected with Q3 (231) collector electrode; Q3 (231) emitter is electrically connected with Q4 (234) collector electrode, and Q4 (234) control pin is electrically connected with switching tube driving pulse output; Q4 (234) emitter is electrically connected with the busbar voltage cold end of said power converter apparatus, and Q4 (234) emitter is connected with D (234) positive electrical, and D (234) negative pole is electrically connected with the collector electrode of Q4 (232); R (17) one ends are electrically connected Q1 (221) emitter and Q2 (222) collector electrode, and the other end is electrically connected Q3 (231) emitter and Q4 (232) collector electrode; C1 (11) and C2 (12) are electrically connected mid point and are electrically connected with the mid point that is electrically connected of Q2 (222) and Q3 (231).
10. brake unit according to claim 9 is characterized in that, also comprises:
The first static voltage sharing R1 (18) and the second static voltage sharing R2 (19);
Said R1 (18) two ends are electrically connected C1 (11) two ends respectively; R2 (19) two ends are electrically connected C2 (12) two ends respectively.
11. brake unit according to claim 9 is characterized in that, also comprises:
The first circuit network B1 (20) and second circuit network B 2 (21);
R (17) one ends are electrically connected the said first circuit network B1 (20) one sides, and said first circuit network B1 (20) opposite side is electrically connected Q1 (221) emitter and Q2 (222) collector electrode; The said first circuit network B1 (20) is used for said R (17) one ends are electrically connected with said Q1 (221) emitter and Q2 (222) collector electrode;
R (17) other end is electrically connected said second circuit network B 2 (21) one sides, and said second circuit network B 2 (21) opposite sides are electrically connected Q3 (231) emitter and Q4 (232) collector electrode; Said second circuit network B 2 (21) is used for said R (17) other end is electrically connected with Q3 (231) emitter and Q4 (232) collector electrode.
12. a power converter apparatus is characterized in that, comprises aforesaid right requirement 9～11 any described brake units; Wherein, the busbar voltage hot end of said power converter apparatus is electrically connected said C1 (11) one ends in the said brake unit, and the busbar voltage cold end of said power converter apparatus is electrically connected said C2 (12) one ends in the said brake unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120397195XU CN202309507U (en) | 2011-10-18 | 2011-10-18 | Braking unit and power conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120397195XU CN202309507U (en) | 2011-10-18 | 2011-10-18 | Braking unit and power conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202309507U true CN202309507U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120397195XU Withdrawn - After Issue CN202309507U (en) | 2011-10-18 | 2011-10-18 | Braking unit and power conversion equipment |
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| Country | Link |
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| CN (1) | CN202309507U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437722A (en) * | 2011-10-18 | 2012-05-02 | 深圳市英威腾电气股份有限公司 | Brake unit and power conversion equipment |
| CN103818263A (en) * | 2013-12-17 | 2014-05-28 | 航天重型工程装备有限公司 | Brake control system and method |
| CN105556818A (en) * | 2013-09-25 | 2016-05-04 | 伊顿公司 | Multi-level converter apparatus and methods using clamped node bias |
| CN109842096A (en) * | 2017-11-28 | 2019-06-04 | Keb自动化两合公司 | Electronic protection circuit |
| US11323044B2 (en) | 2017-04-20 | 2022-05-03 | Danfoss Power Electronics A/S | Three-level inverter and a three-level brake chopper |
-
2011
- 2011-10-18 CN CN201120397195XU patent/CN202309507U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437722A (en) * | 2011-10-18 | 2012-05-02 | 深圳市英威腾电气股份有限公司 | Brake unit and power conversion equipment |
| CN102437722B (en) * | 2011-10-18 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Brake unit and power conversion equipment |
| CN105556818A (en) * | 2013-09-25 | 2016-05-04 | 伊顿公司 | Multi-level converter apparatus and methods using clamped node bias |
| CN105556818B (en) * | 2013-09-25 | 2018-11-13 | 伊顿公司 | Use the more level translator device and methods for clamping down on node bias |
| CN103818263A (en) * | 2013-12-17 | 2014-05-28 | 航天重型工程装备有限公司 | Brake control system and method |
| CN103818263B (en) * | 2013-12-17 | 2016-01-13 | 航天重型工程装备有限公司 | A kind of braking control system and method |
| US11323044B2 (en) | 2017-04-20 | 2022-05-03 | Danfoss Power Electronics A/S | Three-level inverter and a three-level brake chopper |
| CN109842096A (en) * | 2017-11-28 | 2019-06-04 | Keb自动化两合公司 | Electronic protection circuit |
| CN109842096B (en) * | 2017-11-28 | 2021-06-29 | Keb自动化两合公司 | Electronic protection circuit |
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Granted publication date: 20120704 Effective date of abandoning: 20131204 |
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