Direct torque control system and method of six-phase motor

A direct torque control, six-phase technology, applied in control systems, vector control systems, motor generator control, etc., can solve complex implementation methods, difficult practical application and promotion, high complexity and other problems

Active Publication Date: 2018-09-25
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This puts forward higher requirements and more complex implementation methods for the vector table of direct torque control
T...

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  • Direct torque control system and method of six-phase motor
  • Direct torque control system and method of six-phase motor
  • Direct torque control system and method of six-phase motor

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[0060] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

[0061] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific ...

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Abstract

The invention discloses a direct torque control system and method of a six-phase motor. The direct torque control system is connected with a six-arm inverter and a six-phase double-Y-winding motor, middle points of six arms of the six-arm inverter are connected with six phases of winding terminals of the six-phase double-Y-winding motor correspondingly, each inverter arm of the six-arm inverter isformed by connecting two power switch tubes in series, a connecting point of the two power switch tubes in each inverter arm is the middle point of the corresponding arm, the two ends of the serial-connected power tubes are connected with anode and cathode of a DC power supply respectively, the former three inverter arms in the six-arm inverter form a first inverter, the latter three in the sameform a second inverter, and the direct torque control system obtains switch triggering signals of the first and second inverters to realize direct torque control for the six-phase double-Y-winding motor. According to the control system and method, calculation steps are simplified, the calculation difficulty is reduced, and control of high precision and rapid response is realized.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a six-phase motor direct torque control system and a control method thereof. Background technique [0002] Multi-phase motor drive technology is currently a hot research topic in the field of motor control. Compared with the traditional three-phase motor, the multi-phase motor drive has many advantages: Receiving the limitation of the power supply system, the multi-phase motor drive system is an effective way to solve the problem of low voltage and high power; when one or more phases of the multi-phase motor fail When the faulty winding is directly disconnected, the motor can still run, and it has a good winding fault-tolerant operation capability; the output torque of the multi-phase motor has small pulsation, and the pulsation frequency increases, so the low-speed characteristics of the system are improved, and the vibration and noise are greatly reduced. Sma...

Claims

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Application Information

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IPC IPC(8): H02P21/30H02P27/12
CPCH02P27/12H02P21/30
Inventor 林海景治鑫司利云周熙炜陈金平陈俊硕
Owner CHANGAN UNIV
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