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Motor control system

A motor control and controller technology, applied in control systems, AC motor control, electric vehicles, etc., can solve the problems of expanding operating range, decreasing efficiency, and limited speed effect.

Pending Publication Date: 2022-04-01
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this regard, the general existing solution is to reduce the counter electromotive force by means of field weakening, thereby increasing the upper limit of the speed. However, when using this method, additional current is required to generate the magnetic flux required for field weakening, resulting in a decrease in efficiency, and The effect of increasing the speed in this way is limited, and in the end, the operating range has not been greatly expanded

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Embodiment Construction

[0057] The preferred embodiments of the present invention are described below with reference to the drawings. The foregoing and other technical content, features and effects of the present invention are described in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions with reference to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0058] refer to Figure 7-9 , the motor control system of an embodiment of the present invention can control the conductance of the motor winding, including an electric motor 100 and a frequency converter 9, and the electric motor 100 includes a stator 1 and a rotor 3 (shown in figure 2 , 3 ). figure 1 The stator of the electric motor 100 is shown, the stator 1 is a hollow annular iron core, and a pluralit...

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Abstract

The invention relates to a motor control system capable of controlling conduction amount of a motor winding. The motor control system comprises an electric motor and a frequency converter, the electric motor comprises a stator, a rotor and a winding structure. The stator has an iron core in which a plurality of slots are formed. The rotor is surrounded by the stator. The winding structure is formed by inserting pins of a plurality of hairpin type wires into the grooves, in each groove, the pins are sequentially configured into multiple layers of wires in the radius direction of the stator, the winding structure has multiple phases, and each phase is provided with a plurality of windings. The frequency converter is connected with a power supply and the windings, and is provided with a wire changing controller for controlling the windings of each phase to be conducted or not. When the electric motor is in a high rotating speed mode, the wire changing controller controls the conduction amount of the windings of each phase to be reduced by 1 / 3 compared with the full conduction amount of each phase.

Description

[0001] This application is a divisional application of a patent application with the Chinese patent application number ZL201710485068.7 and the invention name "Motor Control System", the entirety of which is hereby cited. technical field [0002] The present invention relates to a motor control system capable of controlling the conductance of a motor winding, and more particularly to a motor control system for controlling an electric motor of a vehicle. Background technique [0003] In recent years, more and more vehicles have used electric motor control systems. The electric motors in the motor control system generally have a stator and a rotor. Each slot of the stator is inserted with multiple sets of copper wires with the same cross-sectional area. To form a winding, the copper wire in the slot passes a multi-phase current and generates a rotating magnetic field, thereby generating an electromotive force to rotate the rotor. As the speed of the rotor increases, the back e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/18H02P27/04H02K1/16H02K3/12H02K3/28
CPCH02P25/18Y02T10/64
Inventor 许宏成赖建宇蔡逸文
Owner DELTA ELECTRONICS INC
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