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A dual-stage matrix converter driving power supply circuit

A matrix converter and drive power technology, applied in the field of matrix converters, can solve the problems of reduced system size, high cost, strong electromagnetic interference, etc., and achieve the effects of small system size, reduced system cost, and reduced electromagnetic interference

Active Publication Date: 2017-04-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the disadvantages of high cost and strong electromagnetic interference in the existing drive scheme, and propose a new low-cost dual-stage matrix converter drive circuit, which cancels the external drive power supply, reduces the system cost on the one hand, reduces The volume of the system is reduced; on the other hand, it can reduce electromagnetic interference

Method used

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  • A dual-stage matrix converter driving power supply circuit
  • A dual-stage matrix converter driving power supply circuit
  • A dual-stage matrix converter driving power supply circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The two-stage matrix converter bidirectional switch stage drive circuit such as Figure 4As shown, it consists of photocoupler circuits 41 and 42, and drive power supply circuits 43 and 44. The photocoupler circuit 41 includes: a photocoupler primary side current limiting resistor R10 and a photocoupler U41. Wherein, the controller drive signal GATE10 is connected to the photocoupler U41 through the current limiting resistor R10, and the other end of the primary side of U41 is grounded. The photocoupler circuit 42 is similar to the photocoupler circuit 41 .

[0038] The driving power supply circuit 43 includes: a diode D11, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a transistor Q11, a capacitor C11, and a regulator tube D12 (15V). Among them, the input phase B voltage u B The diode D11 is respectively connected to one end of the resistors R11 and R12, the other end of the resistor R11 is connected to the base of the transistor Q11, the base of ...

Embodiment 2

[0044] Two-stage matrix converter unidirectional switching stage drive circuit such as Figure 5 As shown, it consists of photocoupler circuits 51 and 52, and driving power supply circuits 53 and 54. The photocoupler circuit 51 includes: a photocoupler primary side current limiting resistor R30 and a photocoupler U51. Wherein, the controller driving signal GATE30 is connected to the photocoupler U51 through the current limiting resistor R30, and the other end of the primary side of U51 is grounded. The photocoupler circuit 52 is similar to the photocoupler circuit 51 .

[0045] The driving power circuit 53 includes: a diode D31, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a transistor Q31, a capacitor C31, and a regulator tube D32 (15V). Wherein, the anode of the diode D31 is connected to the collector of the switching tube SU to the positive terminal P of the DC bus, which is quite different from the bidirectional switching stage driving circuit. DC bus...

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Abstract

The invention discloses a driving power source circuit of a twin-stage matrix converter. The driving power source circuit comprises two branches symmetrically arranged, a photoelectric coupler circuit and a driving power source circuit are serially connected on each branch, the photoelectric coupler circuits are used for isolating controller signals from driving signals, and the driving power source circuits are used for supplying power source to the auxiliary sides of the photoelectric couplers. The branches are connected with a power circuit after connected in parallel, and the power circuit is a part of the twin-stage matrix converter. The twin-stage matrix converter adopts the driving power source circuit, an external switch power source as a driving power source is omitted, and by the scheme, the twin-stage matrix converter can sufficiently utilize input voltage to generate required driving voltage to satisfy its driving requirements. The driving power source circuit has the advantages of compact structure and low cost and electromagnetic interference and can stably and reliably supply driving power source for the system.

Description

technical field [0001] The invention relates to a dual-stage matrix converter system, in particular to a dual-stage matrix converter drive power circuit, which belongs to the field of matrix converters. Background technique [0002] At present, the AC-DC-AC converters widely used in the industry mostly use electrolytic capacitors for the energy storage capacitors of the DC bus, and the electrolyte is volatile, which reduces the service life of the converter and the reliability of the system. At the same time, the DC bus capacitor and input The side inductor has a large volume, which limits the improvement of system power density. [0003] In this case, a matrix converter without any energy storage elements came into being. Compared with traditional AC converters, it has the following advantages: (1) It does not require large energy storage elements and has a compact structure; (2) The operation of four-quadrant operation is simple, and it is easy to achieve unity power fact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458
Inventor 卞金梁周波雷家兴刘晓宇秦显慧梁莹石宝平
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS