CN219420571U - Electric energy control type cross-linked power switch driving control device - Google Patents

Abstract

The utility model aims to provide an electric energy control type cross-linked power switch driving control device which comprises a control chip and a phase circuit module; the phase circuit module is provided with 2-9 groups; the phase circuit module comprises a driving module I, a driving module II, a driving module III, a driving module IV, an auxiliary power supply module and four groups of I/O interfaces; the driving module I, the driving module II, the driving module III and the driving module IV are connected in parallel, one end of the driving module I, the driving module II, the driving module III and the driving module IV are electrically connected with the control chip after being connected in parallel, the other end of the driving module I, the driving module II, the driving module III and the driving module IV are electrically connected with a group of I/O interfaces respectively. The utility model provides a cross-linking type power driving device which can be simultaneously adapted to NPC type (diode clamping type) and FC type (flying capacitor type) multiphase three-level inverter circuits, and can promote optimization and simplicity of a control strategy while reducing the overall power consumption and PCB area of the circuit.

Description

An electric energy control type cross-linked power switch drive control device

technical field

The utility model relates to the technical field of inverter circuit power switch control, in particular to an electric energy control cross-linked power switch drive control device.

Background technique

In recent years, multi-level inverters have become a hot topic of research. Three-level inverters are the simplest and most practical circuit in multi-level inverters. Compared with traditional two-level inverters, the main advantages of three-level inverters are: the device has twice the forward blocking voltage capability, and can reduce harmonics and lower switching frequency, thereby reducing system losses.

The control strategy of the power switch tube of the current three-phase multi-level inverter circuit is relatively complicated and limited by the topological space, and there are still great safety hazards in the electrical application scenarios lacking electrical isolation equipment.

Contents of the invention

The utility model aims to provide an electric energy control type cross-linked power switch drive control device. It provides a cross-linked power drive device that can be adapted to both NPC type (diode clamp type) and FC type (flying capacitor type) multi-phase three-level inverter circuits. While reducing the overall power consumption of the circuit and PCB area, it can promote the optimization and simplicity of the control strategy.

The electric energy control type cross-linked power switch drive control device includes a control chip and a phase circuit module;

The phase circuit modules are provided with 2-9 groups; the phase circuit modules include drive module I, drive module II, drive module III, drive module IV, auxiliary power supply module, and four sets of I/O interfaces; drive module I, drive module II, drive module III, and drive module IV are connected in parallel, and after parallel connection, one end is electrically connected to the control chip, and the other end is electrically connected to the auxiliary power supply module. The drive module I, drive module II, drive module III, and drive module IV are respectively connected to a group of I/O interfaces.

The power control type cross-linked power switch drive control device also includes an overvoltage and overcurrent protection circuit, and the control chip is connected to the power port after passing through the overvoltage and overcurrent protection circuit.

The electric energy control type cross-linked power switch drive control device also includes a digital display module and a temperature protection circuit, and the digital display module is electrically connected to the control chip through the temperature protection circuit.

The phase circuit modules are provided with 3 groups.

The power control type cross-linked power switch drive control device further includes a noise protection circuit, and the noise protection circuit is electrically connected to the control chip.

The noise protection circuit includes two sets of microphone single-array modules and two sets of multi-order Butterworth low-pass filters, and the two sets of microphone single-array modules are connected as signal input ends of two sets of multi-order Butterworth low-pass filters.

The drive module includes an inverter single-bridge circuit and a drive circuit. The inverter single-bridge circuit is installed on the drive circuit. Both ends of the drive circuit are electrically connected to the control chip and the auxiliary power supply module.

The inverter single-bridge circuit is a single-bridge flying capacitor circuit or a single-bridge diode clamp circuit.

The single-arm flying-span capacitive circuit includes a collective heat sink, MOS tube I, MOS tube II, MOS tube III, MOS tube IV, and a capacitor;

The MOS tube I, MOS tube II, MOS tube III, and MOS tube IV are connected in series, and the positive and negative poles of the series circuit are respectively connected to the positive pole and the negative pole of the drive circuit; one end of the capacitor is connected to the line between the MOS tube I and the MOS tube II, and the other end is connected to the line between the MOS tube III and the MOS tube IV; the contact between the MOS tube II and the MOS tube III outputs an inverted AC voltage, and the gate driving voltage of each MOS tube is provided by the I/O interface, and the line is connected to the I/O interface .

The single-arm diode clamping circuit includes an integrated heat sink, MOS tube V, MOS tube VI, MOS tube VII, MOS tube VIII, diode I, and diode II;

The MOS tube V, MOS tube VI, MOS tube VII, and MOS tube VIII are connected in series, and the positive and negative poles of the series circuit are respectively connected to the positive pole and the negative pole of the driving circuit; the diodes are provided with two groups to form a diode clamping circuit, the positive pole of the diode clamping circuit is connected to the line between the MOS tube V and the MOS tube VI, the negative pole of the diode clamping circuit is connected to the line between the MOS tube VII and the MOS tube VIII; the contact between the MOS tube VII and the MOS tube VII outputs an inverted AC voltage, The gate drive voltage of each MOS transistor is provided by the I/O interface, and its line is connected to the I/O interface; a midpoint balance port is provided on the line between the two groups of diodes.

The electric energy control type cross-linked power switch drive control device also includes a multilayer printed circuit board, and the control chip and the phase circuit module are all arranged on the multilayer printed circuit board.

The model of the auxiliary power supply module can choose H621xL series chips, such as H6211L, H6212L, H6213L.

The model of the overvoltage and overcurrent protection circuit can be selected from chips such as LP5300 chips.

The model of the digital display module can choose digital current and voltage dual display 0-100V10A boards of brands such as Hashita and Xiya.

The model of the temperature protection circuit can choose chips such as Xingang Micro RC01ST52A SOT23-5.

The model of the driving circuit can be selected as UCC21520 silicon carbide MOS transistor gate driving circuit.

The utility model design principle is as follows:

The utility model is a circuit structure that can convert DC bus voltage into multiphase sinusoidal alternating current with adjacent phase interval of 120° and working frequency of 50Hz±5-10% through multiphase inverter circuit and control system of cross-linked coupling structure.

The preferred solution of the utility model is a three-level inverter circuit, and each inverter bridge arm has four power switch tubes as main power devices of the inverter circuit. The power supply of the three-level multi-phase inverter driver board is input from the onboard power port, and after passing through the onboard overvoltage and overcurrent protection device, it provides the appropriate voltage and current to the 32-bit intelligent main control chip of the ARM architecture; the temperature protection circuit uses the PID control principle to accurately control the temperature of the system device circuit, the control board and the normal operation of the main control chip during the work of the system device; the auxiliary power supply supplies power to the power switch tube drive module;

The beneficial effects of the utility model are:

The utility model provides a power switch tube isolation drive device with a cross-linked coupling structure that can support a multi-phase multi-level inverter circuit. Based on the unique and innovative design of the multi-drive module and multi-I/O interface combination structure, it can save PCB area to a large extent and reduce the overall power consumption of the circuit. At the same time, it can greatly reduce the potential threat of electrical high voltage, and finally realize a more optimized control strategy and a simpler control process. It can not only achieve higher efficiency, but also improve the stability and reliability of the system.

Description of drawings

Fig. 1 is a schematic structural view of an electric energy control type cross-linked power switch drive control device of an embodiment;

Fig. 2 is the schematic diagram of the single bridge arm flying capacitor type circuit of embodiment 1;

Fig. 3 is the schematic diagram of the single bridge arm diode clamp type circuit of embodiment 2;

Fig. 4 is the schematic diagram of the topology equivalent circuit when multiple groups of single-arm diode clamping circuits of embodiment 2 are respectively installed in each driving circuit;

5 is a schematic diagram of the UCC21520 silicon carbide MOS transistor gate drive circuit of Embodiments 1 and 2;

FIG. 6 is a schematic diagram of the multi-order Butterworth low-pass filter of Embodiments 1 and 2.

Implementation

The utility model is described in detail below in conjunction with accompanying drawing and embodiment.

Example

As shown in Figures 1, 2, 5, and 6, the power control type cross-linked power switch drive control device includes a control chip, a phase circuit module, an overvoltage and overcurrent protection circuit, a digital display module, a temperature protection circuit, and a noise protection circuit;

There are three groups of phase circuit modules; the phase circuit modules include drive module I, drive module II, drive module III, drive module IV, auxiliary power supply module, and four sets of I/O interfaces; drive module I, drive module II, drive module III, and drive module IV are connected in parallel, and after parallel connection, one end is electrically connected to the control chip, and the other end is electrically connected to the auxiliary power supply module. The drive module I, drive module II, drive module III, and drive module IV are respectively connected to a group of I/O interfaces.

The control chip is connected to the power port after passing through the overvoltage and overcurrent protection circuit; the digital display module is electrically connected to the control chip through the temperature protection circuit; and the noise protection circuit is electrically connected to the control chip. The noise protection circuit includes two sets of microphone single-array modules and two sets of multi-order Butterworth low-pass filters, and the two sets of microphone single-array modules are connected as signal input ends of two sets of multi-order Butterworth low-pass filters.

The drive module includes an inverter single-bridge circuit and a drive circuit. The inverter single-bridge circuit is installed on the drive circuit. Both ends of the drive circuit are electrically connected to the control chip and the auxiliary power supply module.

The inverter single-bridge circuit is a single-bridge flying-span capacitor circuit; the single-bridge flying-span capacitor circuit includes a collective heat sink, MOS tube I, MOS tube II, MOS tube III, MOS tube IV, and an inverter clamping capacitor;

The MOS tube I, MOS tube II, MOS tube III, and MOS tube IV are connected in series, and the positive and negative poles of the series circuit are respectively connected to the positive pole and the negative pole of the drive circuit; one end of the capacitor is connected to the line between the MOS tube I and the MOS tube II, and the other end is connected to the line between the MOS tube III and the MOS tube IV; the contact between the MOS tube II and the MOS tube III outputs an inverted AC voltage, and the gate driving voltage of each MOS tube is provided by the I/O interface, and the line is connected to the I/O interface .

Example

As shown in Figures 1 and 3-6, the power control type cross-linked power switch drive control device includes a control chip, a phase circuit module, an overvoltage and overcurrent protection circuit, a digital display module, a temperature protection circuit, and a noise protection circuit;

There are three groups of phase circuit modules; the phase circuit modules include drive module I, drive module II, drive module III, drive module IV, auxiliary power supply module, and four sets of I/O interfaces; drive module I, drive module II, drive module III, and drive module IV are connected in parallel, and after parallel connection, one end is electrically connected to the control chip, and the other end is electrically connected to the auxiliary power supply module. The drive module I, drive module II, drive module III, and drive module IV are respectively connected to a group of I/O interfaces.

The control chip is connected to the power port after passing through the overvoltage and overcurrent protection circuit; the digital display module is electrically connected to the control chip through the temperature protection circuit; and the noise protection circuit is electrically connected to the control chip. The noise protection circuit includes two sets of microphone single-array modules and two sets of multi-order Butterworth low-pass filters, and the two sets of microphone single-array modules are connected as signal input ends of two sets of multi-order Butterworth low-pass filters.

The drive module includes an inverter single-bridge circuit and a drive circuit. The inverter single-bridge circuit is installed on the drive circuit. Both ends of the drive circuit are electrically connected to the control chip and the auxiliary power supply module.

The inverter single-bridge circuit is a single-bridge diode clamp circuit; the single-bridge diode clamp circuit includes a collective heat sink, MOS tube V, MOS tube VI, MOS tube VII, MOS tube VIII, diode I, and diode II;

The MOS tube V, MOS tube VI, MOS tube VII, and MOS tube VIII are connected in series, and the positive and negative poles of the series circuit are respectively connected to the positive pole and the negative pole of the driving circuit; the diodes are provided with two groups to form a diode clamping circuit, the positive pole of the diode clamping circuit is connected to the line between the MOS tube V and the MOS tube VI, the negative pole of the diode clamping circuit is connected to the line between the MOS tube VII and the MOS tube VIII; the contact between the MOS tube VII and the MOS tube VII outputs an inverted AC voltage, The gate drive voltage of each MOS transistor is provided by the I/O interface, and its line is connected to the I/O interface; a midpoint balance port is provided on the line between the two groups of diodes.

Claims (10)

1. An electric energy control type cross-linked power switch driving control device comprises a control chip and a phase circuit module; the method is characterized in that:

the phase circuit module is provided with 2-9 groups; the phase circuit module comprises a driving module I, a driving module II, a driving module III, a driving module IV, an auxiliary power supply module and four groups of I/O interfaces; the driving module I, the driving module II, the driving module III and the driving module IV are connected in parallel, one end of the driving module I, the driving module II, the driving module III and the driving module IV are electrically connected with the control chip after being connected in parallel, the other end of the driving module I, the driving module II, the driving module III and the driving module IV are electrically connected with a group of I/O interfaces respectively.

2. The power control type cross-linked power switch driving control device according to claim 1, wherein: the control chip is connected with the power port after passing through the overvoltage and overcurrent protection circuit; the temperature protection circuit is connected with the digital display module through the temperature protection circuit.

3. The power control type cross-linked power switch driving control device according to claim 1, wherein: the phase circuit module is provided with 3 groups.

4. The power control type cross-linked power switch driving control device according to claim 1, wherein: the noise protection circuit is electrically connected with the control chip.

5. The power control type cross-linked power switch driving control apparatus according to claim 4, wherein: the noise protection circuit comprises two groups of microphone single-array modules and two groups of multi-order Butterworth low-pass filters, and the two groups of microphone single-array modules are connected and then serve as signal input ends of the two groups of multi-order Butterworth low-pass filters.

6. The power control type cross-linked power switch driving control device according to claim 1, wherein: the driving module comprises an inversion single-bridge arm circuit and a driving circuit, wherein the inversion single-bridge arm circuit is arranged on the driving circuit, and two ends of the driving circuit are respectively and electrically connected with the control chip and the auxiliary power supply module.

7. The power control type cross-linked power switch driving control apparatus according to claim 6, wherein: the inversion single-bridge arm circuit is a single-bridge arm flying capacitor type circuit or a single-bridge arm diode clamp type circuit.

8. The power control type cross-linked power switch driving control apparatus according to claim 7, wherein: the single bridge arm flying capacitor type circuit comprises a set radiating fin, a MOS tube I, a MOS tube II, a MOS tube III, a MOS tube IV and a capacitor;

the MOS tube I, the MOS tube II, the MOS tube III and the MOS tube IV are connected in series, and the anode and the cathode of the serial circuit are respectively connected with the anode and the cathode of the driving circuit; one end of the capacitor is connected with a circuit between the MOS tube I and the MOS tube II, and the other end of the capacitor is connected with a circuit between the MOS tube III and the MOS tube IV; the junction between the MOS tube II and the MOS tube III outputs inverted alternating voltage, the grid driving voltage of each MOS tube is provided by an I/O interface, and the circuit of each MOS tube is connected with the I/O interface.

9. The power control type cross-linked power switch driving control apparatus according to claim 7, wherein:

the single bridge arm diode clamping circuit comprises a set radiating fin, an MOS tube V, an MOS tube VI, an MOS tube VII, an MOS tube VIII, a diode I and a diode II;

the MOS tube V, the MOS tube VI, the MOS tube VII and the MOS tube VIII are connected in series, and the anode and the cathode of the serial circuit are respectively connected with the anode and the cathode of the driving circuit; the diode is provided with two groups, the two groups are connected in series to form a diode clamping type circuit, the positive electrode of the diode clamping type circuit is connected with a circuit between the MOS tube V and the MOS tube VI, and the negative electrode of the diode clamping type circuit is connected with a circuit between the MOS tube VII and the MOS tube VIII; the junction between the MOS tube VI and the MOS tube VII outputs inverted alternating voltage, the grid driving voltage of each MOS tube is provided by an I/O interface, and the circuit of each MOS tube is connected with the I/O interface; a midpoint balance port is arranged on a line between the two groups of diodes.

10. The power control type cross-linked power switch driving control device according to claim 1, wherein: the control chip and the phase circuit module are arranged on the multilayer printed circuit board.