Control method for inverter and inverter

A technology of an inverter device and a control method, which is applied in the field of inverter device control and inverter devices, can solve the problems of poor economy and many switching devices, and achieve the effects of reducing system cost, reducing calculation amount, and simple control method

Inactive Publication Date: 2014-07-02
北京君泰联创低碳节能科技有限公司
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Problems solved by technology

[0011] The purpose of the present invention is to provide a control method of an inverter device and an inverter device to solve the problem in the prior art that the switching devices of the inverter device used to simultaneously drive two three-phase parallel AC motors lead to poor economic efficiency

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  • Control method for inverter and inverter
  • Control method for inverter and inverter
  • Control method for inverter and inverter

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] An embodiment of the present invention provides an inverter device, Figure 4 is a schematic diagram of an inverter device according to an embodiment of the present invention, such as Figure 4As shown, the inverter device is used to simultaneously drive two three-phase AC motors. The two three-phase AC motors include a first motor and a second motor. The inverter device includes: five sets of inverter bridge arms, wherein the first The output end of one set of inverter bridge arms is connected to the U-phase winding of the first motor, the output end of the second set of inverter bridge arms is connected to the V-phase winding of the first motor, and the output end of the third set of ...

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Abstract

The invention aims to provide a control method for an inverter and the inverter. The inverter is used in two three-phase alternating-current motors including the first motor and the second motor at the same time. The inverter comprises five sets of inverter bridge arms, a current sampling device and a hysteresis controller. The output end of the first set of inverter bridge arms is connected with a U-phase winding of the first motor. The output end of the second set of inverter bridge arms is connected with a V-phase winding of the first motor. The output end of the third set of inverter bridge arms is connected with a U-phase winding of the second motor. The output end of the fourth set of inverter bridge arms is connected with a V-phase winding of the second motor. The output end of the fifth set of inverter bridge arms is connected with the W-phase winding of the first motor and a W-phase winding of the second motor. The current sampling device is used for sampling a current. The hysteresis controller is connected with the current sampling device and the control ends of the five sets of inverter bridge arms and is used for obtaining the objective current and the output current of each phase winding of the two three-phase alternating motors and sending corresponding pulse control signals to the five sets of inverter bridge arms through hysteresis control according to the output currents and the objective currents.

Description

technical field [0001] The present invention relates to the field of engineering machinery, in particular to a method for controlling an inverter device and the inverter device. Background technique [0002] In the motor speed control system, there are many control methods, such as vector control, direct torque control, predictive model control, etc. Among them, vector control technology and direct torque control are the most widely used. [0003] While the motor drive technology is becoming more and more mature, in many industrial and civil applications, parallel drive of multiple motors and dual-motor energy mutual feedback drive (such as electric vehicle drive device) have been more widely used, and how to make it more reasonable and effective Driving these motors has become one of the concerns in the field of motor speed regulation. [0004] The existing dual-motor parallel drive operation generally adopts dual inverters to control the two motors respectively, and the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74
Inventor 郭龙龙梁京哲王鹏飞王涛
Owner 北京君泰联创低碳节能科技有限公司
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