船用小型三相逆变电源系统设计外文翻译.doc

Photovoltaic Power Pupply Pine Pave Inverter Based On 68HC908MR16 MCU 1 Introduction With the growing energy crisis and increase the environmental awareness of mankind,the development and utilization of new energy is reccining increasing attention. And solar energy as an inexhaustible supply of highly efficient non-polluting energy has more people of all ages. In this paper, the photovoltaic power system is sinusoidal inverter suitable for a household, especially for electricty without electricity in remote areas of the western region of a power systm users, as China’s western development will be its market prospects will become more and more broad. 2 Structure and principle of the inverter system 2.1 The basic structure of the system First of all, by the solar array to the battery charging circuit in order to get a basic stability of the DC voltage, and then by the inverter ciruit will be high-frequency alternationg current into direct current recerse, and finally by the frequency step-up transformer and filter circuit filtering into 50Hz,220V sinusoidal AC voltage.Control of the whole system is completed by a single-chip MR16.The core part of the formation of SPWM wave and the output AC voltage according to the feedback form, composed of sampling digital PI regulator part. 2.2Single-chip on the MR16 68HC908MR 16 single chip is a low-cost, high-performance single-chip 8. It has 32k bytes of rewritable flash memory-chip FLASH,with 768 bytes of RAM,this system completely enough;with a dedicated motor for 6-channel PWM output PWMMC modules, suitable for in single-phase, three-phase inverter, at the same time the module was also devoted to the protection Fsult FAULT pin 4, whem the fault does not occur in the case of interruption caused by the rapid blockade of the PWM output to achieve the purpose of protection; with the option external crystal clock or internal clock phase-locked loop clock generator modul, the system chosen by the internal PLL clock can produc