Motor driver topology and control algorithm
A motor driver and control algorithm technology, which is applied in motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problems of increasing control difficulty, complicated calculation process, and numerous voltage vectors, and achieves simple structure, The effect of simple control algorithm and high system reliability
Active Publication Date: 2016-10-12
山东大学(威海)
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Problems solved by technology
[0004] The voltage space vector control method used in the existing technology has a large number of basic voltage vectors, which makes the calculation process cumbersome and increases the difficulty of control
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[0044] Such as figure 1 As shown, the present invention includes a 3n-phase motor, a driver and a controller, wherein n≥1 and n is a positive integer, the 3n-phase motor is connected to the mains through the driver, and the controller controls the working state of the 3n-phase motor through the driver , the driver adopts a bridge structure, the bridge structure is n three-phase bridge inverter circuits, when n>1, the n three-phase bridge inverter circuits are connected in series, and the 3n-phase motor It is n sets of three-phase winding structure.
[0045] The controller includes a control chip and a peripheral circuit, and the peripheral circuit includes a first DC power supply, a crystal oscillator, a reset circuit, an analog-to-digital conversion module and a register module; the driver includes an inverter interlock circuit, a power switch tube drive circuit, inverter circuit, the second DC power supply and the third DC power supply, wherein the function of the inverter ...
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The invention provides a motor driver topology and a control algorithm. The motor driver topology comprises a 3n-phase motor, a driver and a controller, wherein n is greater than or equal to 1 and is a positive integer; the 3n-phase motor is connected with a power supply through the driver; the controller controls the working state of the 3n-phase motor through the driver; a bridge structure is adopted by the driver and is formed by n three-phase bridge inverter circuits; when n is greater than 1, the n three-phase bridge inverter circuits are connected in series up and down; the 3n-phase motor is formed by n sets of three-phase winding structures; and the control algorithm is controlling the working state of the 3n-phase motor through a space vector pulse width modulation (SVPWM) algorithm of a three-phase motor. The motor driver topology has the beneficial effects that the multi-phase motor can be driven, the structure is simple, the control algorithm is simple and convenient and the system reliability is high.
Description
technical field [0001] The invention belongs to the field of motor drive and control, and in particular relates to a motor driver topology and control algorithm. Background technique [0002] The traditional motor drive topology is a single-stage bridge structure. The characteristic of this topology is that the windings of each phase of the motor are independent and do not affect each other. The redundancy is effectively reflected and the reliability is high. It is suitable for low-voltage and high-power applications. However, in this topology, each power switch tube bears the full DC bus voltage, which requires high performance of the device itself, which increases the hardware cost of the system, and the price of power devices increases exponentially with the increase of voltage. Users bring a heavy economic burden. [0003] The space vector pulse width modulation technology originates from the three-phase motor speed control system, and is widely used in various pulse wi...
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Login to View More IPC IPC(8): H02P21/14H02P27/08
CPCH02P21/14H02P27/085
Inventor 王松郭荣生李晓坤邢燕斌考永贵周宝森
Owner 山东大学(威海)