Control method and control device of five-phase alternating current motor
A technology of AC motor and control method, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of multi-phase motor application and control without more consideration, and achieve adjustable torque and motor speed, running smooth effect
Active Publication Date: 2013-09-04
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
View PDF4 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The domestic motor industry basically still focuses on three-phase motors, and there is no more consideration for the application and control of multi-phase motors
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments will be described in detail below with reference to the accompanying drawings.
[0021] The invention provides a control method of a five-phase AC motor. A control method for a five-phase motor, including a five-phase PWM inverter circuit and a five-phase AC motor, specifically includes the following steps:
[0022] Determine the second-axis mapping current Ids* and the first-axis mapping current Iqs* according to the target torque Te*, the input voltage Vdc, and the motor speed ω;
[0023] Determine the feedback current Ids of the second axis according to the current of each phase of the five-phase AC motor;
[0024] Determine the preset quadrature axis current range of the first axis according to the feedback current Ids of the second axis;
[0025] Adjust the mapping current Iqs* of the first axis according to the preset quad...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a control method of a five-phase alternating current motor. The method comprises a five-phase PWM (Pulse Width Modulation) inverter circuit and a motor and is characterized by comprising the steps of determining a first axis mapping current and a second axis mapping current according to a target torque, input voltage and rotating speed; determining a second axis feedback current according to each phase of current of the motor; determining a first axis preset quadrature axis current range according to the second axis feedback current; adjusting the first axis mapping current according to the first axis preset quadrature axis current range so as to obtain a first axis output current; controlling the input signal of the five-phase PWM inverter circuit according to the first axis output current; obtaining and adjusting a control current according to the target torque, the input voltage and the rotating speed; and controlling the waveform of the motor and further controlling the running of the motor through controlling the input signal of the circuit according to the adjusted control current. The phase current can be adjusted according to the load change, the motor rotating speed change and the input voltage fluctuation, so that the torque and the rotating speed of the motor can be adjusted, the reliable running range can be determined, and the running is more stable.
Description
technical field [0001] The invention relates to motor control technology, in particular to a control method and a control device for a five-phase AC motor. Background technique [0002] In recent years, due to the increasingly prominent resource and environmental problems worldwide, all countries are stepping up the implementation of new energy electric vehicle research and development plans. The driving motor in new energy vehicles will become the main power source. There are various forms of driving motors, and AC permanent magnet synchronous motors will become the mainstream. At present, the motors seen in the market are basically three-phase motors, and multi-phase motors are rare. However, multi-phase motors have higher power density and torque density, which can suppress the torque fluctuation effect, which is suitable for the use environment of vehicle drive motors and has great room for development, especially for five-phase AC motors. The domestic motor industry b...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/08
Inventor 陈启苗金启前由毅吴成明冯擎峰
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD