Discrete control method and device for three-phase full-bridge inverter
A three-phase full-bridge, discrete control technology, applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components, etc. Computational volume and software cost, etc., to achieve good steady-state control performance, fast load dynamic control performance, and simple control implementation.
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[0057] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0058] Such as figure 1 As shown, a kind of discrete control method and device suitable for a three-phase full-bridge inverter provided by the present invention includes a three-phase full-bridge inverter and a discrete controller, and the discrete controller includes: voltage and current sampling and A / D conversion module, duty cycle calculation module, duty cycle selection module, DPWM and drive module.
[0059] Such as figure 2 As shown, the duty cycle calculation module in the above controller includes: 3s-2s coordinate transformation module, duty cycle D AI (k+1)-D BI (k+1)-D CI (k+1) calculation module, duty cycle D AII (k+1)-D BII (k+1)-D CII (k+1) calculation module, three-phase P H Duty ratio calculation module and three-phase P L Duty cycle calculation module.
[0060] The steps to realize the above-mentioned discrete control met...
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