A control method for a six-phase optical storage drive system for an electric vehicle
A control method and electric vehicle technology, applied in the direction of electric vehicles, motor generator control, AC motor control, etc., can solve the problems of limiting the charging flexibility of electric vehicles and grid load, so as to improve flexibility, reduce system costs, and improve The effect of cruising range
Active Publication Date: 2021-11-23
合肥龙智机电科技有限公司
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[0004] However, whether it is a charging pile or an on-board charger, it is necessary to charge the electric vehicle at a place with a charging pile or a public grid socket during the idle period of the electric vehicle, which limits the flexibility of electric vehicle charging, and the electric vehicle charger A large number of access to the grid will also cause a certain load on the grid
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[0031] The present invention will be further explained below in conjunction with the accompanying drawings.
[0032]Such as figure 1 As shown, a six-phase optical storage drive system control method for electric vehicles. The roof photovoltaic panel 1 is connected between the two neutral points of the six-phase symmetrical permanent magnet synchronous motor 2, wherein the positive pole of the roof photovoltaic panel 1 is connected to the neutral point of the six-phase symmetrical permanent magnet synchronous motor phase ABC, and the roof The negative pole of the photovoltaic panel 1 is connected to the neutral point of the phase UVW of the six-phase symmetrical permanent magnet synchronous motor. The input end of the six-phase inverter 3 and the capacitor are connected in parallel to the output end of the vehicle battery 4 , and the output end of the six-phase inverter 3 is connected to the six-phase symmetrical permanent magnet synchronous motor 2 . Its control method compr...
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The invention discloses a control method of a six-phase optical storage drive system for an electric vehicle. First, the motor speed and position signals are sampled, and the motor speed deviation obtained through negative feedback of the motor speed is passed through a speed PI controller to obtain a given q-axis current I q * ;Resample the motor phase current, and convert the phase current to d-axis, q-axis, x-axis, y-axis and 0 through space vector decoupling and Park change 1 axis, and then, the current deviation obtained through the current negative feedback is obtained by the current PI controller to obtain its corresponding voltage; finally, the obtained voltage is subjected to inverse Park transformation and inverse space vector decoupling, and PWM modulation and inversion operation , to get the driving signal of the switching tube. In the present invention, by connecting the photovoltaic panel on the roof in series between the two neutral points of the six-phase motor, and designing a corresponding control method, the battery is charged or the output power of the battery is reduced during the driving of the electric vehicle, which can effectively improve the performance of the electric vehicle. cruising range.
Description
technical field [0001] The invention relates to a control method for a six-phase optical storage drive system for an electric vehicle, belongs to the field of power electronics and electric transmission, and can be applied to new energy electric vehicle applications. Background technique [0002] Electric vehicles are an important part of new energy vehicles, and batteries are a key factor restricting its development. Battery charging time and service life are closely related to charging technology, so battery charging technology is valued by academia and industry. [0003] At present, electric vehicle charging equipment can be divided into two types, namely charging piles and on-board chargers. Charging piles are expensive and require a certain amount of land. They are generally built in places with dense traffic and used for high-current fast charging, which requires high charging technology and charging safety. The car charger is relatively cheap, but the charging power...
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IPC IPC(8): H02P21/00H02P21/22H02P27/12B60L8/00H02J7/35
CPCB60L8/003H02J7/35H02P21/0003H02P27/12H02P21/22Y02B10/10Y02T10/64Y02T10/7072Y02T10/72
Inventor 於锋朱志豪胡德林吴晓新
Owner 合肥龙智机电科技有限公司