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Power converter control system

A technology of power converter and control system, which is applied in the direction of control/regulation system, DC power input conversion to DC power output, output power conversion device, etc. It can solve the problems of reducing bandwidth, time-consuming, slow transient response time, etc.

Active Publication Date: 2017-12-05
沃孚半导体公司
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, digital (e.g., DSP-based) MPPT control systems generally suffer from reduced bandwidth and relatively slow transient reaction times to external events such as load impedance changes when compared to conventional analog control systems
Further, compared to conventional analog control systems, digital MPPT control systems are relatively time-consuming in terms of design and implementation

Method used

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Embodiment Construction

[0015] The embodiments set forth below represent the necessary information to enable those skilled in the art to practice the embodiments and illustrate the best modes for practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not specifically addressed herein. It should be understood that these concepts and applications fall within the scope of this disclosure and the appended claims.

[0016] It will be understood that, although the terms first, second etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present ...

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Abstract

A control system for a power converter includes a digital reference signal generator, a first proportional-integral (PI) controller, a second PI controller, and a diode. The digital reference signal generator is configured to operate in a maximum peak power tracking (MPPT) mode of operation and an output voltage control mode of operation. In the MPPT mode of operation, the digital reference signal generator is configured to receive an input voltage and an input current provided to the power converter and provide an input voltage reference signal based on the input voltage and the input current. In the output voltage control mode of operation, the digital reference signal generator is configured to provide a constant input voltage reference signal.

Description

technical field [0001] The present disclosure relates to power converter control systems, and in particular, to hybrid analog and digital power converter control systems. Background technique [0002] There are several different types of control systems that can be used with power converters. One common type of control system for power converters is a peak current mode (PCM) control system, which typically utilizes analog components to provide control signals to the power converter to achieve desired output performance. While generally effective in many applications, it is difficult to apply PCM control systems when utilizing variable power sources such as renewable energy sources (eg, photovoltaic cells, fuel cells, and wind generators). Accordingly, maximum peak power tracking (MPPT) control systems have been utilized in these applications instead of PCM control systems. [0003] Due to the nature of the calculations performed in MPPT control systems, such control system...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02M3/156H02M3/157G05F3/08
CPCH02J3/385G05F3/08H02M3/156H02M3/157H02M1/0025Y02E10/56
Inventor 比诺德·库马尔·阿格拉沃尔约翰·穆肯
Owner 沃孚半导体公司
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