Dual-DSP control circuit of photovoltaic grid-connected device with STATCOM function

A control circuit and photovoltaic technology, applied in photovoltaic power generation, AC network circuits, circuit devices, etc., can solve the problems of single function and high cost of photovoltaic power generation devices

Inactive Publication Date: 2006-12-13
王剑 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The primary purpose of the present invention is to propose a dual-DSP control circuit for a photovoltaic grid-connected device with STATCOM function to improve the cost performance of photovoltaic grid-

Method used

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  • Dual-DSP control circuit of photovoltaic grid-connected device with STATCOM function
  • Dual-DSP control circuit of photovoltaic grid-connected device with STATCOM function
  • Dual-DSP control circuit of photovoltaic grid-connected device with STATCOM function

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Embodiment 1

[0020] Referring to the overall schematic diagram of the three-phase photovoltaic grid-connected device shown in Figure 1, the inverter adopts a three-phase two-level inverter bridge. The whole device is mainly composed of a photovoltaic array (9), an inverter main power circuit (800), an output filter inductor (3), and a double DSP control circuit (400).

[0021] In the dual DSP control circuit, DSPa uses a fixed-point DSP chip with strong control capabilities, such as TI's 16-bit fixed-point DSP (401)-TMS320LF2407A or TMS320F2812, and DSPb uses a floating-point DSP chip with strong computing capabilities, such as TI's 32-bit floating-point DSP chip (402)-TMS320VC33, two DSPs are connected through dual-port RAM (403) to form fast parallel communication-such as CY7C025 of CYPRESS Company, DSPa uses internal FLASH of the chip to store programs, DSPb (402 ) uses an external FLASH (404) to store programs, and when the circuit board is initialized, the programs are transferred fro...

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Abstract

The invention discloses a double-DSP control circuit of photovoltaic interconnected device with STATCOM function, which comprises the following parts: locating DSP chip, high-speed RAM chip, floating-point DSP chip, 16-bit FLASH chip, double-hole RAM chip, CPLD chip and signal adjusting circuit. The control circuit gathers each item electric quantity signal of photovoltaic signal, which generates PWM signal of control device interconnected inverter through combination calculation of signal disposal and two DSP. The double-DSP control circuit sends active power to electric net in the working time of photovoltaic interconnected device, which improves the utility of solar battery.

Description

technical field [0001] The invention relates to the design of a dual DSP control circuit in a multifunctional photovoltaic grid-connected device, and belongs to the technical field of multifunctional photovoltaic grid-connected devices. Background technique [0002] With the increasing depletion of traditional energy, the world's energy in the 21st century will undergo tremendous changes. The energy structure dominated by fossil energy with limited resources and serious pollution will gradually transform into a diverse energy structure dominated by clean and clean renewable energy with unlimited resources. Sexual and complex energy structure. Solar photovoltaic power generation is a clean and renewable energy. The development of photovoltaic power generation technology and its wide application play an important role in alleviating the shortage of conventional energy and reducing environmental pollution. Under such a premise, the development and application of solar photovol...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38H02J3/01H02J3/18
CPCY02E40/16Y02E10/563Y02E10/56Y02E40/10Y02E40/40
Inventor 王健刘建政
Owner 王剑
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