CN110611297A

CN110611297A - IPM short-circuit protection circuit, module and system for flywheel energy storage device

Info

Publication number: CN110611297A
Application number: CN201910850999.1A
Authority: CN
Inventors: 程祥; 谢洪生; 李海超; 王聪; 韩星; 任政君
Original assignee: Shenyang Microcontrol New Energy Technology Co Ltd
Current assignee: Shenyang Microcontrol New Energy Technology Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2019-12-24

Abstract

The invention relates to the technical field of IPM (intelligent power module) protection circuits, in particular to an IPM short-circuit protection circuit, module and system for a flywheel energy storage device. The IPM short-circuit protection system is suitable for 1500V subway rails and 200KW flywheel energy storage devices. The IPM short-circuit protection system includes: the IPM short-circuit protection module is respectively connected with the IPM module, the signal generation module and the line driving module, the line driving module is respectively connected with the IPM module and the signal generation module, the IPM short-circuit protection module collects pulse signals output by the signal generation module and gate-level voltage signals of an IGBT assembly in the IPM module and outputs short-circuit protection signals, and the line driving module controls whether the pulse signals are transmitted to the IPM module according to the short-circuit protection signals. Through the mode, short circuit detection is carried out on the IGBT assembly and the pulse signals, and compared with the MCU controller, the device structure is simplified, and the safety and the accuracy of the system are improved.

Description

IPM short-circuit protection circuit, module and system for flywheel energy storage device

Technical Field

The invention relates to the technical field of IPM (intelligent power module) protection circuits, in particular to an IPM short-circuit protection circuit, module and system for a flywheel energy storage device.

Background

IPM (intelligent power module) is an advanced new type of power switching device, which has the advantages of GTR (large power transistor) high current density, low saturation voltage and high voltage resistance, as well as the advantages of MOSFET (field effect transistor) high input impedance, high switching frequency and low driving power. Logic, control, detection and protection circuits are integrated in the IPM, the IPM is convenient to use and wide in application range, the size and the development time of a system are reduced, the reliability of the system is greatly enhanced, the IPM is suitable for the development direction of the current power devices, such as modularization, recombination and Power Integrated Circuit (PIC), and the IPM draws more and more extensive attention in the field of power electronics.

The IPM is taken as an important component of a control system, and the handling and protection of the abnormal working state of the IPM are particularly paid attention to in the using process, but the conventional protection circuit usually only detects the short circuit of an IGBT assembly, can not block the pulse signal to be continuously transmitted under the condition of inputting an error pulse signal, and meanwhile, a main controller MCU is required to be equipped to compare and analyze sampling data so as to judge whether the circuit is short-circuited, and if the short circuit occurs, the main controller MCU sends a blocking signal. The method needs the combination of software and hardware, increases the difficulty and workload of development, and increases the cost because the price of the MCU is higher than that of other electronic components.

Accordingly, it is an urgent technical problem in the art to provide a new IPM short-circuit protection circuit, module and system for flywheel energy storage device to overcome the above drawbacks of the prior art.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned shortcomings of the prior art and providing an IPM short-circuit protection circuit, module and system for a flywheel energy storage device.

The object of the invention can be achieved by the following technical measures:

the embodiment of the invention provides an IPM short-circuit protection circuit for a flywheel energy storage device, which is respectively connected with an IPM module and a signal generation module, wherein the IPM module is provided with a first IGBT component and a second IGBT component, the signal generation module is used for generating and outputting a first pulse signal and a second pulse signal, and the IPM short-circuit protection circuit comprises: the signal input circuit module, the signal comparison circuit module and the signal output circuit module are connected in sequence;

the signal input circuit module is respectively connected with the IPM module and the signal generation module, and acquires a gate-level voltage signal of the first IGBT assembly, a gate-level voltage signal of the second IGBT assembly, the first pulse signal and the second pulse signal and transmits the signals to the signal comparison circuit module;

the signal comparison circuit module comprises a first AND gate logic gate chip, a second AND gate logic gate chip, a third AND gate logic gate chip and an OR gate logic gate chip, wherein the input end of the OR gate logic gate chip is respectively connected with the output end of the first AND gate logic gate chip, the output end of the second AND gate logic gate chip and the output end of the third AND gate logic gate chip, the output end of the OR gate logic gate chip is connected with the signal output circuit module, the first AND gate logic gate chip outputs a first level signal according to the first pulse signal and the second pulse signal, the second AND gate logic gate chip outputs a second level signal according to the gate level voltage signal of the first IGBT assembly, the third AND gate logic gate chip outputs a third level signal according to the gate level voltage signal of the second IGBT assembly, and the OR gate logic gate chip receives the first level signal, The second level signal and the third level signal output a fourth level signal to the signal output circuit module;

and the signal output circuit module outputs a short-circuit protection signal according to the third level signal.

According to one embodiment of the present invention, the signal generation module includes a first generation terminal for generating and outputting a first pulse signal and a second generation terminal for generating and outputting a second pulse signal.

According to an embodiment of the present invention, the signal input circuit module includes a first resistor and a second resistor, the first resistor is respectively connected in series with the input terminal of the first and logic gate chip and the first generation terminal, and the second resistor is respectively connected in series with the input terminal of the first and logic gate chip and the second generation terminal.

According to an embodiment of the present invention, the gate-level voltage signal of the first IGBT component includes an upper gate-level voltage signal of the first IGBT component and a lower gate-level voltage signal of the first IGBT component, and two first voltage sensors are disposed on the first IGBT component and are respectively used for collecting the upper gate-level voltage signal of the first IGBT component and the lower gate-level voltage signal of the first IGBT component.

According to an embodiment of the present invention, the signal input circuit module includes a third resistor and a fourth resistor, the third resistor is respectively connected in series with the input terminal of the second and logic gate chip and one of the first voltage sensors, and the fourth resistor is respectively connected in series with the input terminal of the second and logic gate chip and the other of the first voltage sensors.

According to an embodiment of the present invention, the gate-level voltage signal of the second IGBT component includes an upper gate-level voltage signal of the second IGBT component and a lower gate-level voltage signal of the second IGBT component, and two second voltage sensors are disposed on the second IGBT component and are respectively used for collecting the upper gate-level voltage signal of the second IGBT component and the lower gate-level voltage signal of the second IGBT component.

According to an embodiment of the present invention, the signal input circuit module includes a fifth resistor and a sixth resistor, the fifth resistor is respectively connected in series with the input terminal of the third and logic gate chip and one of the second voltage sensors, and the sixth resistor is respectively connected in series with the input terminal of the third and logic gate chip and the other of the second voltage sensors.

According to one embodiment of the invention, the signal output circuit module comprises two NOT chips which are connected in series in sequence.

The embodiment of the invention provides an IPM short-circuit protection module for a flywheel energy storage device, which comprises the IPM short-circuit protection circuit.

An embodiment of the present invention provides an IPM short-circuit protection system for a flywheel energy storage device, comprising: the IPM short-circuit protection module, the signal generation module, the IPM module and the line driving module are connected, wherein the input end of the IPM short-circuit protection module is respectively connected with the IPM module and the signal generation module, the output end of the IPM short-circuit protection module is connected with the line driving module, and the line driving module is respectively connected with the IPM module and the signal generation module; when the short-circuit protection signal output by the IPM short-circuit protection module is in a low level state, the line driving module controls the signal generation module to output a first pulse signal and a second pulse signal to pass through and transmit the first pulse signal and the second pulse signal to the IPM module, and when the short-circuit protection signal output by the IPM short-circuit protection module is in a high level state, the line driving module controls to block the first pulse signal and the second pulse signal output by the signal generation module from transmitting the first pulse signal and the second pulse signal to the IPM module.

According to an embodiment of the present invention, the line driving module includes a signal input pin, an enable pin, and a signal output pin, the enable pin is connected to the IPM short-circuit protection module, the input pin is connected to the signal generation module, the output pin is connected to the IPM module, when the short-circuit protection signal is in a low level state, the first pulse signal and the second pulse signal are transmitted to the IPM module through the enable pin, and when the short-circuit protection signal is in a high level state, the enable pin blocks the first pulse signal and the second pulse signal from being transmitted to the IPM module.

The IPM short-circuit protection circuit, the module and the system for the flywheel energy storage device are all composed of hardware, and compared with a system combining software and hardware, the safety and the accuracy of the system are improved, and the information processing efficiency is also obviously improved; by the mode, on the basis of the original short-circuit detection of the IGBT assembly, a group of short-circuit detection of the input pulse signals is added, and when the error pulse signals are input, the pulse signals are blocked to be continuously transmitted, so that the pulse signals cannot be transmitted to the IPM module, and the purpose of protecting the IGBT assembly is achieved; the circuit driving module serves as a switch, the short-circuit protection signal is output to the circuit driving module, and the first pulse signal and the second pulse signal are controlled to pass/block according to the level state of the short-circuit protection signal.

Drawings

FIG. 1 is a schematic diagram of an IPM short-circuit protection circuit for a flywheel energy storage device according to the present invention.

FIG. 2 is a schematic diagram of the IPM short circuit protection system for flywheel energy storage device according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Many aspects of the invention are better understood with reference to the following drawings. The components in the drawings are not necessarily to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, in the several views of the drawings, like reference numerals designate corresponding parts.

The word "exemplary" or "illustrative" as used herein means serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" or "illustrative" is not necessarily to be construed as preferred or advantageous over other embodiments. All of the embodiments described below are exemplary embodiments provided to enable persons skilled in the art to make and use the examples of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. In other instances, well-known features and methods are described in detail so as not to obscure the invention. For purposes of the description herein, the terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," and derivatives thereof shall relate to the invention as oriented in fig. 1. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

An embodiment of the present invention provides an IPM short-circuit protection circuit for a flywheel energy storage device, fig. 1 is a schematic structural diagram of the IPM short-circuit protection circuit for the flywheel energy storage device, please refer to fig. 1, the IPM short-circuit protection circuit is respectively connected to an IPM module 10 and a signal generating module 20, further, the IPM module 10 is provided with a first IGBT component (not shown) and a second IGBT component (not shown), the signal generating module 20 includes a first generating terminal 201 for generating and outputting a first pulse signal and a second generating terminal 202 for generating and outputting a second pulse signal, the IPM short-circuit protection circuit includes: the signal input circuit module 30, the signal comparison circuit module 40 and the signal output circuit module 50 are connected in sequence.

In this embodiment, the signal input circuit module 30 is connected to the IPM module 10 and the signal generating module 20, respectively, and the signal input circuit module 30 collects the gate voltage signal of the first IGBT component, the gate voltage signal of the second IGBT component, the first pulse signal and the second pulse signal and transmits them to the signal comparing circuit module 40.

Further, the first IGBT component includes an upper arm and a lower arm, two first voltage sensors (not shown in the figure) are disposed on the first IGBT component, the gate-level voltage signal of the first IGBT component includes an upper gate-level voltage signal of the first IGBT component (i.e., a gate-level voltage signal of the upper arm) and a lower gate-level voltage signal of the first IGBT component (i.e., a gate-level voltage signal of the lower arm), the two first voltage sensors are respectively used for collecting an upper gate-level voltage signal of the first IGBT component and a lower gate-level voltage signal of the first IGBT component, the second IGBT component includes an upper arm and a lower arm, two second voltage sensors (not shown in the figure) are disposed on the second IGBT component, the gate-level voltage signal of the second IGBT component includes an upper gate-level voltage signal of the second IGBT component (i.e., a gate-level voltage signal of the upper arm) and a lower gate-level voltage signal of the second IGBT component (i.e., a gate-level voltage signal of the, the two second voltage sensors are respectively used for acquiring an upper gate voltage signal of the second IGBT assembly and a lower gate voltage signal of the second IGBT assembly. In this embodiment, the first IGBT component and the second IGBT component may operate separately or simultaneously.

In this embodiment, the signal comparison circuit module 40 further includes a first and gate logic gate chip 401, a second and gate logic gate chip 402, a third and gate logic gate chip 403, and an or gate logic gate chip 404, an input end of the or gate logic gate chip 404 is respectively connected to an output end of the first and gate logic gate chip 401, an output end of the second and gate logic gate chip 402, and an output end of the third and gate logic gate chip 403, an output end of the or gate logic gate chip 404 is connected to the signal output circuit module 50, the first and gate logic gate chip 401 is grounded and connected to the reference voltage generator, the second and gate logic gate chip 402 is grounded and connected to the reference voltage generator, the third and gate logic gate chip is grounded and connected to the reference voltage generator, and the or gate logic gate chip 404 is grounded and connected to the reference voltage generator 403. The first and gate chip 401 outputs a first level signal according to the first pulse signal and the second pulse signal, when the first pulse signal and the second pulse signal are at a high level at the same time, the first level signal output by the first and gate chip 401 is at a high level, otherwise, the first level signal output by the first and gate chip 401 is at a low level. The second and gate logic gate chip 402 outputs a second level signal according to the upper gate level voltage signal of the first IGBT component and the lower gate level voltage signal of the first IGBT component, when the upper gate level voltage signal of the first IGBT component and the lower gate level voltage signal of the first IGBT component are both at a high level, the second level signal output by the second and gate logic gate chip 402 is at a high level, otherwise, the second level signal output by the second and gate logic gate chip 402 is at a low level. The third and gate logic gate chip 403 outputs a third level signal according to the upper gate level voltage signal of the second IGBT component and the lower gate level voltage signal of the second IGBT component, when the upper gate level voltage signal of the second IGBT component and the lower gate level voltage signal of the second IGBT component are both at a high level, the third level signal output by the third and gate logic gate chip 403 is at a high level, otherwise, the third level signal output by the third and gate logic gate chip 403 is at a low level. The or gate logic gate chip 404 receives the first level signal, the second level signal, and the third level signal and outputs a fourth level signal to the signal output circuit module 50, when only one of the first level signal, the second level signal, and the third level signal is a high level, the fourth level signal output by the or gate logic gate chip 404 is a high level, otherwise, the fourth level signal output by the or gate logic gate chip 404 is a low level, and the signal output circuit module 50 outputs a short-circuit protection signal according to the fourth level signal.

Further, the signal output circuit module 50 includes two not chips 501 connected in series in sequence. The not-gate chip 501 is configured to enhance the fourth level signal and stabilize the fourth level signal, when the fourth level signal is at a low level, the short-circuit protection signal output by the signal output circuit module 50 is the enhanced and stabilized fourth level signal, and the short-circuit protection signal is at a low level, which indicates that the signal is normal; when the fourth level signal is at a high level, the short-circuit protection signal output by the signal output circuit module 50 is the enhanced and stabilized fourth level signal, and the short-circuit protection signal is at a high level, which indicates that the signal is abnormal.

According to an embodiment of the present invention, referring to fig. 1, the signal input circuit module 30 includes a first resistor 301 and a second resistor 302, wherein the first resistor 301 is connected in series with the input terminal of the first and logic gate chip 401 and the first generation terminal 201, respectively, and the second resistor 302 is connected in series with the input terminal of the first and logic gate chip 401 and the second generation terminal 202, respectively.

According to an embodiment of the present invention, referring to fig. 1, the signal input circuit module 30 includes a third resistor 303 and a fourth resistor 304, the third resistor 303 is respectively connected in series with an input terminal of the second and logic gate chip 402 and one of the first voltage sensors, and the fourth resistor 304 is respectively connected in series with an input terminal of the second and logic gate chip 402 and the other first voltage sensor.

According to an embodiment of the present invention, referring to fig. 1, the signal input circuit module 30 includes a fifth resistor 305 and a sixth resistor 306, the fifth resistor 305 is respectively connected in series with an input terminal of the third and logic gate chip 403 and one of the second voltage sensors, and the sixth resistor 306 is respectively connected in series with an input terminal of the third and logic gate chip 403 and the other of the second voltage sensors.

Embodiments of the present invention provide an IPM short-circuit protection module for a flywheel energy storage device, where the IPM short-circuit protection module includes the above IPM short-circuit protection circuit, which is described in detail in the foregoing, and will not be described herein again.

Embodiments of the present invention provide an IPM short-circuit protection system for a flywheel energy storage device, which is suitable for 1500V subway rails and 200KW flywheel energy storage devices. Fig. 2 is a schematic structural diagram of an IPM short-circuit protection system for a flywheel energy storage device, and referring to fig. 2, the IPM short-circuit protection system includes: the IPM short-circuit protection module 1, the signal generation module 2, the IPM module 3 and the line driving module 4 are arranged in a manner that an input end of the IPM short-circuit protection module 1 is respectively connected with the IPM module 3 and the signal generation module 2, an output end of the IPM short-circuit protection module 1 is connected with the line driving module 4, the line driving module 4 is respectively connected with the IPM module 3 and the signal generation module 2, the IPM short-circuit protection module 1 collects a first pulse signal and a second pulse signal output by the signal generation module 2 and a gate level voltage signal of a first IGBT component and a gate level voltage signal of a second IGBT component output by the IPM module 3 and outputs a short-circuit protection signal, when the short-circuit protection signal output by the IPM short-circuit protection module 1 is in a low level state, the line driving module 4 controls the first pulse signal and the second pulse signal output by the signal generation module 2 to pass through and be transmitted to the IPM module 3, and when the short-circuit protection signal output by the IPM short-, the line driving module 4 controls the first pulse signal and the second pulse signal output by the blocking signal generation module 2 to be transmitted to the IPM module 3.

Further, the line driving module 4 includes a signal input pin, an enable pin, and a signal output pin, the enable pin is connected to the IPM short-circuit protection module 1, the input pin is connected to the signal generation module 2, and the output pin is connected to the IPM module 3, when the short-circuit protection signal is in a low level state, the first pulse signal and the second pulse signal are transmitted to the IPM module 3 through the enable pin, and when the short-circuit protection signal is in a high level state, the enable pin blocks the first pulse signal and the second pulse signal from being transmitted to the IPM module 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An IPM short-circuit protection circuit for a flywheel energy storage device, the IPM short-circuit protection circuit being connected to an IPM module and a signal generation module, the IPM module being provided with a first IGBT assembly and a second IGBT assembly, the signal generation module being configured to generate and output a first pulse signal and a second pulse signal, the IPM short-circuit protection circuit comprising: the signal input circuit module, the signal comparison circuit module and the signal output circuit module are connected in sequence;

and the signal output circuit module outputs a short-circuit protection signal according to the fourth level signal.

2. The IPM short-circuit protection circuit of claim 1, wherein the signal generation module includes a first generation terminal for generating and outputting a first pulse signal and a second generation terminal for generating and outputting a second pulse signal.

3. The IPM short-circuit protection circuit of claim 2, wherein the signal input circuit block comprises a first resistor and a second resistor, the first resistor is connected in series with the input terminal and the first generation terminal of the first and logic gate chip, respectively, and the second resistor is connected in series with the input terminal and the second generation terminal of the first and logic gate chip, respectively.

4. The IPM short-circuit protection circuit of claim 3, wherein the gate voltage signal of the first IGBT component comprises an upper gate voltage signal of the first IGBT component and a lower gate voltage signal of the first IGBT component, two first voltage sensors are arranged on the first IGBT component, and the two first voltage sensors are respectively used for collecting the upper gate voltage signal of the first IGBT component and the lower gate voltage signal of the first IGBT component.

5. The IPM short protection circuit of claim 4, wherein the signal input circuit module comprises a third resistor and a fourth resistor, the third resistor is connected in series with the input terminal of the second AND logic gate chip and one of the first voltage sensors, and the fourth resistor is connected in series with the input terminal of the second AND logic gate chip and the other of the first voltage sensors.

6. The IPM short-circuit protection circuit of claim 3 or 5, wherein the gate voltage signal of the second IGBT component comprises an upper gate voltage signal of the second IGBT component and a lower gate voltage signal of the second IGBT component, and two second voltage sensors are arranged on the second IGBT component and are respectively used for collecting the upper gate voltage signal of the second IGBT component and the lower gate voltage signal of the second IGBT component.

7. The IPM short circuit protection circuit of claim 6, wherein the signal input circuit module comprises a fifth resistor and a sixth resistor, the fifth resistor is connected in series with the input terminal of the third AND logic gate chip and one of the second voltage sensors, and the sixth resistor is connected in series with the input terminal of the third AND logic gate chip and the other of the second voltage sensors.

8. The IPM short-circuit protection circuit of claim 1, wherein the signal output circuit block comprises two not-gate chips connected in series in sequence.

9. An IPM short-circuit protection module for a flywheel energy storage device, wherein said IPM short-circuit protection module comprises an IPM short-circuit protection circuit according to any one of claims 1 to 8.

10. An IPM short circuit protection system for a flywheel energy storage device, the IPM short circuit protection system comprising: the IPM short-circuit protection module, the signal generation module, the IPM module and the line driver module of claim 9, wherein an input terminal of the IPM short-circuit protection module is connected to the IPM module and the signal generation module, respectively, an output terminal of the IPM short-circuit protection module is connected to the line driver module, and the line driver module is connected to the IPM module and the signal generation module, respectively; when the short-circuit protection signal output by the IPM short-circuit protection module is in a low level state, the line driving module controls the signal generation module to output a first pulse signal and a second pulse signal to pass through and transmit the first pulse signal and the second pulse signal to the IPM module, and when the short-circuit protection signal output by the IPM short-circuit protection module is in a high level state, the line driving module controls to block the first pulse signal and the second pulse signal output by the signal generation module from transmitting the first pulse signal and the second pulse signal to the IPM module.

11. The IPM short-circuit protection system of claim 8, wherein the line driving module includes a signal input pin, an enable pin and a signal output pin, the enable pin is connected to the IPM short-circuit protection module, the input pin is connected to the signal generation module, the output pin is connected to the IPM module, the first and second pulse signals are transmitted to the IPM module through the enable pin when the short-circuit protection signal is in a low level state, and the enable pin blocks the transmission of the first and second pulse signals to the IPM module when the short-circuit protection signal is in a high level state.