CN204013181U - A kind of control supply unit of voltage source unsteady flow module - Google Patents
A kind of control supply unit of voltage source unsteady flow module Download PDFInfo
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- CN204013181U CN204013181U CN201320660343.1U CN201320660343U CN204013181U CN 204013181 U CN204013181 U CN 204013181U CN 201320660343 U CN201320660343 U CN 201320660343U CN 204013181 U CN204013181 U CN 204013181U
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- bus capacitor
- capacitor device
- supply unit
- semiconductor switch
- power supply
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Abstract
The utility model discloses a kind of control supply unit of voltage source unsteady flow module, comprise the first DC bus capacitor device, the second DC bus capacitor device, the first semiconductor switch, the second semiconductor switch, the first discharge resistance, the second discharge resistance, the first fly-wheel diode, the second fly-wheel diode, the first isolation DC/DC stabilized voltage power supply, the second isolation DC/DC stabilized voltage power supply and controller.Adopt this control supply unit to make to isolate the isolated insulation withstand voltage level drop by half of DC/DC stabilized voltage power supply, significantly reduced the cost of isolating DC/DC stabilized voltage power supply.
Description
Technical field
The utility model relates to voltage source unsteady flow module, particularly relates to a kind of control supply unit of voltage source unsteady flow module.
Background technology
Voltage source unsteady flow module is widely used in various large capacity converter devices, for example, two level H-bridge voltage source unsteady flow modules and three level H-bridge voltage source unsteady flow modules are widely applied in the high voltage variable frequency speed regulator based on chain type current transformer and novel STATCOM, and two level MMC voltage source unsteady flow modules and three level MMC voltage source unsteady flow modules are widely applied in flexible DC power transmission device.
The controller of these voltage source unsteady flow modules provides control power supply by an isolation DC/DC stabilized voltage power supply conventionally, this isolation DC/DC stabilized voltage power supply obtains input power from the DC bus capacitor of voltage source unsteady flow module, when direct voltage on its DC capacitor is higher, the isolated insulation of this isolation DC/DC stabilized voltage power supply is withstand voltage just has relatively high expectations, and causes this isolation DC/DC stabilized voltage power supply cost higher.Therefore, need to find a kind of control supply unit of new voltage source unsteady flow module.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of control supply unit of voltage source unsteady flow module, solves the intrinsic isolating transformer high dielectric voltage withstand of conventional control supply unit and realizes difficulty and high cost shortcoming.
For achieving the above object and other relevant objects, the utility model provides a kind of control supply unit of voltage source unsteady flow module, its it comprise the first DC bus capacitor device, the second DC bus capacitor device, the first isolation DC/DC stabilized voltage power supply, the second isolation DC/DC stabilized voltage power supply and controller, the positive terminal of the first described DC bus capacitor device is controlled the positive input terminal of supply unit as this, the negative pole end of the first described DC bus capacitor device is connected with the positive terminal of the second described DC bus capacitor device, form the reset terminal of this control supply unit, the negative pole end of described the second DC bus capacitor device is controlled the negative input end of supply unit as this, the positive input terminal of described the first isolation DC/DC stabilized voltage power supply is connected with the positive input terminal of this control supply unit, the negative input end of described the first isolation DC/DC stabilized voltage power supply, the positive input terminal of the second isolation DC/DC stabilized voltage power supply is connected with the reset terminal of this control supply unit, the negative input end of described the second isolation DC/DC stabilized voltage power supply is connected with the negative input end of this control supply unit, the positive output end of the positive output end of described the first isolation DC/DC stabilized voltage power supply and the second isolation DC/DC stabilized voltage power supply is connected and forms the positive output end of this control supply unit, and the negative output terminal of the negative output terminal of described the first isolation DC/DC stabilized voltage power supply and the second isolation DC/DC stabilized voltage power supply is connected and forms the negative output terminal of this control supply unit, the positive input terminal of described controller is connected with the positive input terminal of this control supply unit, and zero of described controller enters end and is connected with the reset terminal of this control supply unit, and the negative input end of described controller is connected with the negative input end of this control supply unit, the first positive output end of described controller, the first negative output terminal is connected with the first discharge circuit, described the first discharge circuit is in parallel with described the first DC bus capacitor device, the second positive output end of described controller, the second negative output terminal is connected with the second discharge circuit, described the second discharge circuit is in parallel with described the second DC bus capacitor device, described controller is for detection of the first DC bus capacitor device, voltage on the second DC bus capacitor device, and according to the first DC bus capacitor device, voltage on the second DC bus capacitor device is by the first discharge circuit, the second discharge circuit is controlled the first DC bus capacitor device, the discharge time of the second DC bus capacitor device, make the first DC bus capacitor device, the voltage of the second DC bus capacitor device keeps balance.
Preferably, described the first discharge circuit comprises the first semiconductor switch, the first discharge resistance and the first fly-wheel diode, described the second discharge circuit comprises the second semiconductor switch, the second discharge resistance and the second fly-wheel diode, the negative electrode of described the first fly-wheel diode, one end of the first discharge resistance is connected with the positive input terminal of this control supply unit, the anode of described the first fly-wheel diode, the other end of the first discharge resistance is connected with the collector electrode of described the first semiconductor switch, the emitter of described the first semiconductor switch, the negative electrode of the second fly-wheel diode, one end of the second discharge resistance is connected with the reset terminal of this control supply unit, the anode of described the second fly-wheel diode, the other end of the second discharge resistance is connected with the collector electrode of this second semiconductor switch, the emitter of this second semiconductor switch is connected with the negative input end of this control supply unit, the first positive output end of described controller connects the gate pole of described the first semiconductor switch, the first negative output terminal of described controller connects the emitter of described the first semiconductor switch, the second positive output end of described controller connects the gate pole of described the second semiconductor switch, the second negative output terminal of described controller connects the emitter of described the second semiconductor switch, described controller is according to the first DC bus capacitor device, voltage on the second DC bus capacitor device is given respectively the gate pole of the first semiconductor switch, the gate pole of the second semiconductor switch is carried the pwm signal of different duty, control the first semiconductor switch, the make-and-break time of the second semiconductor switch, and then control the first DC bus capacitor device, the discharge time of the second DC bus capacitor device.
As mentioned above, the control supply unit of voltage source unsteady flow module of the present utility model has following beneficial effect: this control supply unit arranges two DC bus capacitor devices, higher DC capacitor voltage can be divided into so up and down to each half direct voltage and respectively as the inputs of two isolation DC/DC stabilized voltage power supplys, make to isolate the isolated insulation withstand voltage level drop by half of DC/DC stabilized voltage power supply, significantly reduced the cost of isolation DC/DC stabilized voltage power supply, this control supply unit is also provided with controller and discharge circuit, by the discharge time of controller controlled discharge circuit, thereby can make the voltage of two DC bus capacitor devices keep balance.
Accompanying drawing explanation
Fig. 1 is pie graph and the application winding diagram in voltage source unsteady flow module thereof of voltage source unsteady flow module controls supply unit of the present utility model.
Embodiment
By specific instantiation, execution mode of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.The utility model can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Refer to Fig. 1.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present utility model in a schematic way, satisfy and only show with assembly relevant in the utility model in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
As shown in Figure 1, in this figure dotted line frame, be the pie graph of voltage source unsteady flow module controls supply unit of the present utility model, dotted line frame is outward the application winding diagram of voltage source unsteady flow module controls supply unit of the present utility model in voltage source unsteady flow module.
This voltage source unsteady flow module controls supply unit comprises the first DC bus capacitor device C1, the second DC bus capacitor device C2, the first semiconductor switch S1, the second semiconductor switch S2, the first discharge resistance R1, the second discharge resistance R2, the first sustained diode 1 and the second sustained diode 2, the first isolation DC/DC stabilized voltage power supply P1, the second isolation DC/DC stabilized voltage power supply P2 and controller CN.
The positive terminal of the first DC bus capacitor device C1 is as the positive input terminal DC+ that controls supply unit, the negative pole end of the first DC bus capacitor device C1 is connected with the positive terminal of the second DC bus capacitor device C2, the reset terminal DC0 of formation control supply unit, the negative pole end of the second DC bus capacitor device C2 is as the negative input end DC-that controls supply unit.One end of the negative electrode of the first sustained diode 1 and the first discharge resistance R1 is connected and is connected to the positive input terminal DC+ that controls supply unit, first anode of sustained diode 1 and the other end of R1 are connected and are connected to the collector electrode of the first semiconductor switch S1, the emitter of the first semiconductor switch S1, one end of the negative electrode of the second sustained diode 2 and the second discharge resistance R2 is connected with the reset terminal DC0 that controls supply unit, the anode of the second sustained diode 2, the other end of the second discharge resistance R2 is connected and is connected to the collector electrode of the second semiconductor switch S2, the emitter of the second semiconductor switch S2 is connected to the negative input end DC-that controls supply unit.The first sustained diode 1, the first discharge resistance R1 and the first semiconductor switch S1 form the first discharge circuit, this first discharge circuit is in parallel with the first DC bus capacitor device C1, the second sustained diode 2, the second discharge resistance R2 and the second semiconductor switch S2 form the second discharge circuit, and this second discharge circuit is in parallel with the second DC bus capacitor device C1.
The positive input terminal VI+ of the first isolation DC/DC stabilized voltage power supply P1 is connected to the positive input terminal DC+ that controls supply unit, the positive input terminal of the negative input end of the first isolation DC/DC stabilized voltage power supply P1 and the second isolation DC/DC stabilized voltage power supply P2 is connected and is connected to the reset terminal DC0 of this controls supply unit, and the second negative input end of isolating DC/DC stabilized voltage power supply P2 is connected to the negative input end DC-of this control supply unit; The positive output end of the positive output end of the first isolation DC/DC stabilized voltage power supply P1 and the second isolation DC/DC stabilized voltage power supply P2 is connected and forms the positive output end VO+ of this controls supply unit, the be connected negative output terminal VO-of formation control supply unit of the negative output terminal that the first negative output terminal and second of isolating DC/DC stabilized voltage power supply P1 is isolated DC/DC stabilized voltage power supply P2.
The positive input terminal of controller CN is connected to the positive input terminal DC+ that controls supply unit, and zero of controller CN enters end and is connected to the reset terminal DC0 that controls supply unit, and the negative input end of controller CN is connected to the negative input end DC-that controls supply unit; The first positive output end G1 of controller CN is connected to the gate pole of the first semiconductor switch S1, the first negative output terminal E1 of controller CN is connected to the emitter of the first semiconductor switch S1, the second positive output end G2 of controller CN is connected to the gate pole of the second semiconductor switch S2, and the second negative output terminal E2 of controller CN is connected to the emitter of the second semiconductor switch S2.
Control supply unit when work, its positive input terminal DC+, reset terminal DC0 and negative input end DC-are connected respectively to DC capacitor anode DC+, zero end DC0 and the negative terminal DC-of voltage source unsteady flow module, and the positive output end VO+ that controls supply unit inputs anode and negative terminal with the power supply that negative output terminal VO-is connected respectively the control section of voltage source unsteady flow module.The first isolation DC/DC stabilized voltage power supply P1, the second isolation DC/DC stabilized voltage power supply P2 obtain DC power supply input from the first DC bus capacitor device C1, the second DC bus capacitor device C2 of voltage source unsteady flow module respectively, and the voltage stabilizing output-parallel of each self-isolation is together for the control section of voltage source unsteady flow module provides voltage stabilizing to control power supply.Because the power of the first isolation DC/DC stabilized voltage power supply P1, the second isolation DC/DC stabilized voltage power supply P2 input may be inconsistent, can cause upper and lower sides DC capacitor voltage unbalance, therefore the first sustained diode 1, the first discharge resistance R1 and the first semiconductor switch S1 are formed to the first discharge circuit, make it in parallel with the first DC bus capacitor device C1, the second sustained diode 2, the second discharge resistance R2 and the second semiconductor switch S2 form the second discharge circuit, make it in parallel with the second DC bus capacitor device C1.Controller CN controls the PWM control output that generates different duty automatically according to the magnitude of voltage of the first DC bus capacitor device C1, the second DC bus capacitor device C2 that measure, control respectively the open/turn-off time of the first semiconductor switch S1, the second semiconductor switch S2, and then reach and control the first DC bus capacitor device C1, the second DC bus capacitor device C2 respectively by the time of R1 and R2 electric discharge, thereby control the balance of the first DC bus capacitor device C1 and the second DC bus capacitor device C2 voltage.
This control supply unit arranges two DC bus capacitor devices, higher DC capacitor voltage can be divided into so up and down to each half direct voltage and respectively as the inputs of two isolation DC/DC stabilized voltage power supplys, make to isolate the isolated insulation withstand voltage level drop by half of DC/DC stabilized voltage power supply, significantly reduced the cost of isolation DC/DC stabilized voltage power supply, this control supply unit is also provided with controller and discharge circuit, by the discharge time of controller controlled discharge circuit, thereby can make the voltage of two DC bus capacitor devices keep balance.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (2)
1. the control supply unit of a voltage source unsteady flow module, it is characterized in that: it comprises the first DC bus capacitor device, the second DC bus capacitor device, the first isolation DC/DC stabilized voltage power supply, the second isolation DC/DC stabilized voltage power supply and controller, the positive terminal of the first described DC bus capacitor device is controlled the positive input terminal of supply unit as this, the negative pole end of the first described DC bus capacitor device is connected with the positive terminal of the second described DC bus capacitor device, form the reset terminal of this control supply unit, the negative pole end of described the second DC bus capacitor device is controlled the negative input end of supply unit as this, the positive input terminal of described the first isolation DC/DC stabilized voltage power supply is connected with the positive input terminal of this control supply unit, the negative input end of described the first isolation DC/DC stabilized voltage power supply, the positive input terminal of the second isolation DC/DC stabilized voltage power supply is connected with the reset terminal of this control supply unit, the negative input end of described the second isolation DC/DC stabilized voltage power supply is connected with the negative input end of this control supply unit, the positive output end of the positive output end of described the first isolation DC/DC stabilized voltage power supply and the second isolation DC/DC stabilized voltage power supply is connected and forms the positive output end of this control supply unit, and the negative output terminal of the negative output terminal of described the first isolation DC/DC stabilized voltage power supply and the second isolation DC/DC stabilized voltage power supply is connected and forms the negative output terminal of this control supply unit, the positive input terminal of described controller is connected with the positive input terminal of this control supply unit, and zero of described controller enters end and is connected with the reset terminal of this control supply unit, and the negative input end of described controller is connected with the negative input end of this control supply unit, the first positive output end of described controller, the first negative output terminal is connected with the first discharge circuit, described the first discharge circuit is in parallel with described the first DC bus capacitor device, the second positive output end of described controller, the second negative output terminal is connected with the second discharge circuit, described the second discharge circuit is in parallel with described the second DC bus capacitor device, described controller is for detection of the first DC bus capacitor device, voltage on the second DC bus capacitor device, and according to the first DC bus capacitor device, voltage on the second DC bus capacitor device is by the first discharge circuit, the second discharge circuit is controlled the first DC bus capacitor device, the discharge time of the second DC bus capacitor device, make the first DC bus capacitor device, the voltage of the second DC bus capacitor device keeps balance.
2. the control supply unit of voltage source unsteady flow module according to claim 1, is characterized in that: described the first discharge circuit comprises the first semiconductor switch, the first discharge resistance and the first fly-wheel diode, described the second discharge circuit comprises the second semiconductor switch, the second discharge resistance and the second fly-wheel diode, the negative electrode of described the first fly-wheel diode, one end of the first discharge resistance is connected with the positive input terminal of this control supply unit, the anode of described the first fly-wheel diode, the other end of the first discharge resistance is connected with the collector electrode of described the first semiconductor switch, the emitter of described the first semiconductor switch, the negative electrode of the second fly-wheel diode, one end of the second discharge resistance is connected with the reset terminal of this control supply unit, the anode of described the second fly-wheel diode, the other end of the second discharge resistance is connected with the collector electrode of this second semiconductor switch, the emitter of this second semiconductor switch is connected with the negative input end of this control supply unit, the first positive output end of described controller connects the gate pole of described the first semiconductor switch, the first negative output terminal of described controller connects the emitter of described the first semiconductor switch, the second positive output end of described controller connects the gate pole of described the second semiconductor switch, the second negative output terminal of described controller connects the emitter of described the second semiconductor switch, described controller is according to the first DC bus capacitor device, voltage on the second DC bus capacitor device is given respectively the gate pole of the first semiconductor switch, the gate pole of the second semiconductor switch is carried the pwm signal of different duty, control the first semiconductor switch, the make-and-break time of the second semiconductor switch, and then control the first DC bus capacitor device, the discharge time of the second DC bus capacitor device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660343.1U CN204013181U (en) | 2013-10-24 | 2013-10-24 | A kind of control supply unit of voltage source unsteady flow module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660343.1U CN204013181U (en) | 2013-10-24 | 2013-10-24 | A kind of control supply unit of voltage source unsteady flow module |
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| CN204013181U true CN204013181U (en) | 2014-12-10 |
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| CN201320660343.1U Expired - Fee Related CN204013181U (en) | 2013-10-24 | 2013-10-24 | A kind of control supply unit of voltage source unsteady flow module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595221A (en) * | 2013-10-24 | 2014-02-19 | 张家港智电西威变流技术有限公司 | Control power source device of voltage source current transforming module |
| US12015333B2 (en) | 2019-08-13 | 2024-06-18 | Vestas Wind Systems A/S | Intelligent discharge control for modular multilevel converter |
-
2013
- 2013-10-24 CN CN201320660343.1U patent/CN204013181U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595221A (en) * | 2013-10-24 | 2014-02-19 | 张家港智电西威变流技术有限公司 | Control power source device of voltage source current transforming module |
| US12015333B2 (en) | 2019-08-13 | 2024-06-18 | Vestas Wind Systems A/S | Intelligent discharge control for modular multilevel converter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20191024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |