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Two-phase three-level inverter drive circuit based on six power switch tubes

A three-level inverter, power switch tube technology, applied in the output power conversion device, AC power input into DC power output, AC motor control and other directions, can solve the problem of high loss of ultrasonic motor drive circuit, limit the ultrasonic motor system Application, poor reliability and other problems, to achieve the effect of reducing switching loss, reducing switching loss, and improving bus voltage utilization

Inactive Publication Date: 2019-03-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of high loss, large volume and poor reliability of the ultrasonic motor drive circuit designed by the existing inverter topology, which limits the application of the ultrasonic motor system

Method used

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  • Two-phase three-level inverter drive circuit based on six power switch tubes
  • Two-phase three-level inverter drive circuit based on six power switch tubes
  • Two-phase three-level inverter drive circuit based on six power switch tubes

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Experimental program
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Effect test

specific Embodiment approach 1

[0050] Specific implementation mode one: refer to figure 2 Describe this embodiment in detail, a drive circuit based on six power switch tubes for two-phase three-level inverter described in this embodiment, a two-phase three-level inverter circuit 103 composed of six power switch tubes Including No. 1 MOS tube S1, No. 2 MOSS2, No. 3 MOSS3, No. 4 MOS tube S4, No. 5 MOS tube S5 and No. 6 MOS tube S6,

[0051] There is a freewheeling diode directly between the drain and the source of each MOS transistor,

[0052] The drain of No. 1 MOS transistor S1, the drain of No. 3 MOS transistor S3, and the drain of No. 5 MOS transistor S5 are connected as the positive pole of the DC bus of the two-phase three-level inverter circuit 103,

[0053] The source of No. 2 MOS transistor S2, the source of No. 4 MOS transistor S4 and the source of No. 6 MOS transistor S6 are connected as the negative pole of the DC bus of the two-phase three-level inverter circuit 103,

[0054] The source of the...

specific Embodiment approach 2

[0072] Specific Embodiment 2: A driving circuit for a two-phase three-level inverter based on six power switch tubes described in this embodiment, the two-phase three-level inverter circuit 103 composed of six power switch tubes includes No. 1 IGBT tube S1, No. 2 IGBT tube S2, No. 3 IGBT tube S3, No. 4 IGBT tube S4, No. 5 IGBT tube S5 and No. 6 IGBT tube S6,

[0073] There is a freewheeling diode directly between the collector and emitter of each IGBT tube,

[0074] The collector of the No. 1 IGBT tube S1, the collector of the No. 3 IGBT tube S3, and the collector of the No. 5 IGBT tube S5 are connected to serve as the positive pole of the DC bus of the two-phase three-level inverter circuit 103.

[0075] The emitter of the No. 2 IGBT tube S2, the emitter of the No. 4 IGBT tube S4 and the emitter of the No. 6 IGBT tube S6 are connected as the negative pole of the DC bus of the two-phase three-level inverter circuit 103,

[0076] The emitter of the first IGBT tube S1 is connec...

specific Embodiment approach 3

[0081] Specific Embodiment 3: This embodiment is a further description of a driving circuit based on six power switch tubes for two-phase three-level inverter described in Embodiment 1 or Embodiment 2. In this embodiment, The switch control logic applied to the bases of the six power switch tubes:

[0082] The switch state of No. 1 power switch tube S1 is opposite to that of No. 2 power switch tube S2, the switch state of No. 3 power switch tube S3 is opposite to that of No. 4 power switch tube S4, and the switch state of No. 5 power switch tube S5 is opposite to that of No. The switch state of tube S6 is opposite,

[0083] No. 1 power switch tube S1, No. 2 power switch tube S2, No. 3 power switch tube S3, No. 4 power switch tube S4, No. 5 power switch tube S5 and No. 6 power switch tube S6 have And there is only one turn-on and one turn-off.

[0084] In this embodiment, from Figure 4 It can be seen that, in order to avoid the corresponding increase in switching loss due to...

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Abstract

The invention discloses a two-phase three-level inversion driving circuit based on six power switch tubes, and relates to the technical field of driving of two-phase actuators. The purpose is to solve the problem that an ultrasonic motor driving circuit designed for an existing inversion topological structure is large in loss and size and poor in reliability and limits application of an ultrasonic motor system. A fly-wheel diode is connected between the drain electrode and the source electrode of each MOS transistor, the drain electrode of the first MOS transistor, the drain electrode of the third MOS transistor and the drain electrode of the fifth MOS transistor are connected to serve as the positive pole of a direct-current bus, and the source electrode of the second MOS transistor, the source electrode of the fourth MOS transistor and the source electrode of the sixth MOS transistor are connected to serve as the negative pole of the direct-current bus; the drain electrode of the first MOS transistor and the drain electrode of the second MOS transistor are connected to serve as a first voltage output end, the drain electrode of the third MOS transistor and the drain electrode of the fourth MOS transistor are connected to serve as a common output end, and the drain electrode of the fifth MOS transistor and the drain electrode of the sixth MOS transistor are connected to serve as a second voltage output end. The two-phase three-level inversion driving circuit is used in design of various two-phase ultrasonic / electromagnetic motor driving circuits.

Description

technical field [0001] The present invention relates to the driving technology of two-phase actuators, more specifically, relates to an inverter circuit and a control method for controlling two-phase ultrasonic / electromagnetic motors; the scheme of the present invention is particularly suitable for driving two-phase ultrasonic / electromagnetic motors In the optimization design of the circuit. Background technique [0002] Most of the traditional motor drive technology is researched on the electromagnetic motor, but with the emergence of a new type of two-phase actuator—ultrasonic motor and the expansion of its application range, the problems existing in the prior art are more important than the ultrasonic motor. The application in the system is becoming more and more prominent. [0003] The two-phase ultrasonic motor is a new type of two-phase actuator. Compared with the traditional two-phase electromagnetic motor, from the perspective of drive circuit design, the main diffe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/06H02M7/483H02M7/537
CPCH02M7/483H02M7/537H02P27/06
Inventor 史维佳赵辉马杰姚郁刘晓坤
Owner HARBIN INST OF TECH