Motor winding triangular star-shaped connection dynamic configuration circuit and control method

A technology of connection configuration and dynamic configuration, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of large impact of new energy vehicles, winding current interruption, and large contactor volume, etc., to achieve small circuit impact, The effect of reducing motor terminal voltage and improving output power and power factor

Active Publication Date: 2018-07-06
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides a dynamic configuration circuit and control method for the delta star connection of motor windings, thereby solving the problems of winding current interruption, motor torque sudde

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  • Motor winding triangular star-shaped connection dynamic configuration circuit and control method
  • Motor winding triangular star-shaped connection dynamic configuration circuit and control method
  • Motor winding triangular star-shaped connection dynamic configuration circuit and control method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] Such as figure 1 As shown, a motor winding delta star connection dynamic configuration circuit includes a winding delta star connection configuration module, three-phase windings A1, B1, C1 and a three-phase inverter, and the winding delta star connection configuration module includes a delta The star connection configuration winding and a plurality of bidirectional thyristors, one end o...

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Abstract

The invention discloses a motor winding triangular star-shaped connection dynamic configuration circuit and a control method. The motor winding triangular star-shaped connection dynamic configurationcircuit comprises a winding triangular star-shaped connection configuration module, the winding triangular star-shaped connection configuration module comprises a triangular star-shaped connection configuration winding and multiple two-way thyristors, the winding triangular star-shaped connection configuration module is used for adjusting the triangular star-shaped connection configuration windingthrough switch on or switch off of the two-way thyristors according to motor rotation speed, when the motor rotation speed is larger than a first threshold value, the triangular star-shaped connection configuration winding is adjusted into star-shaped connection, when the motor rotation speed is smaller than a second threshold value, the triangular star-shaped connection configuration winding isadjusted into triangular connection, and the second threshold value is larger than the first threshold value. By using an electronic electrical device like the two-way thyristors, a reliable winding dynamic configuration circuit is built, and thus current can be reliably followed in the winding dynamic configuration process.

Description

technical field [0001] The invention belongs to the field of power electronics, and more specifically relates to a dynamic configuration circuit and control method for a delta-star connection of motor windings. Background technique [0002] The permanent magnet synchronous motor relies on permanent magnet excitation, which saves the excitation winding structure and excitation loss on the rotor. Therefore, the permanent magnet synchronous motor has high power density and high power factor, and has been widely used in vehicle drive motors. Due to the complex driving conditions of new energy vehicles and large fluctuations in vehicle speed, this requires the vehicle drive motor to have a wide range of speed regulation and high efficiency under a wide range of working conditions. However, due to the permanent magnet excitation, the excitation magnetic potential is difficult to adjust, resulting in high no-load back EMF of the motor at high speed, which greatly affects the contro...

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Application Information

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IPC IPC(8): H02P25/18H02P27/06
CPCH02P25/184H02P27/06
Inventor 曲荣海裴同豪李大伟孔武斌蔺梦轩
Owner HUAZHONG UNIV OF SCI & TECH
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