Photovoltaic power optimization system

Patent metadata

Field	Value
Publication number	US-11658488-B2
Application number	US-202016734431-A
Country	US
Kind code	B2
Filing date	Jan 6, 2020
Priority date	May 23, 2019
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

The disclosure discloses a photovoltaic power optimization system, comprising: a plurality of photovoltaic panels; a photovoltaic optimizing module array comprising a plurality of photovoltaic optimizing modules connected in series, each of the photovoltaic optimizing modules being electrically connected to at least one of the photovoltaic panels; an inverter electrically connected to an output terminals of the photovoltaic optimizing module array for converting a DC power into an AC power; and a data center unit communicates wirelessly with at least one of the photovoltaic optimizing modules, and also communicates with the inverter via power line.

First claim

What is claimed is:

1. A photovoltaic power optimization system, comprising:
a plurality of photovoltaic panels;
a photovoltaic optimizing module array, comprising
a plurality of photovoltaic optimizing modules connected in series, each of the photovoltaic optimizing module being electrically connected to at least one of the photovoltaic panels;

an inverter electrically connected to output terminals of the photovoltaic optimizing module array, for converting a DC power into an AC power; and
a data center unit wirelessly communicates with at least one of the photovoltaic optimizing modules, and also communicates with the inverter via power line; and
the plurality of photovoltaic optimizing modules comprising N groups of photovoltaic optimizing modules, wherein the distance between each group of the N groups of photovoltaic optimizing modules and the data center gets closer from a first group to a N-th group of the N groups of photovoltaic optimizing modules;
the first group comprising of one photovoltaic optimizing module, which serves as a signal source for collecting data information and transmitting the collected data information to photovoltaic optimizing modules of a second group of the N groups of photovoltaic optimizing modules,
the second group comprising of more than one photovoltaic optimizing modules, and the first group of photovoltaic optimizing module is adjacent to the second group of photovoltaic optimizing module,
each of a k-th group, a (k−1)th group and a (k+1)th group of the N groups of photovoltaic optimizing module comprising of more than one photovoltaic optimizing modules, each photovoltaic optimizing module of the k-th group serves as transmission node for collecting data information, receiving data information from photovoltaic optimizing modules of the (k−1)th group and other photovoltaic optimizing modules of the k-th group, and transmitting the collected data information and received data information to photovoltaic optimizing modules of the (k+1)th group and other photovoltaic optimizing modules of the k-th group, and the k-th group is adjacent to the (k−1)th group and the (k+1)th group 2<k<(N−1),
and each photovoltaic optimizing module of a N-th group of the N groups of photovoltaic optimizing modules serves as transmission node for collecting data information, receiving data information from photovoltaic optimizing modules of a (N−1)th group of the N groups of photovoltaic optimizing modules and other photovoltaic optimizing modules of the N-th group, and transmitting the collected data information and received data information to the data center unit and other photovoltaic optimizing modules of the N-th group, the N-th group is adjacent to the (N−1)th group and the data center unit.

2. The photovoltaic power optimization system according to claim 1 , wherein the data center unit comprises a first wireless communication module and a power line communication module electrically connected to the first wireless communication module.

3. The photovoltaic power optimization system according to claim 2 , wherein each of the photovoltaic optimizing modules comprises: a microcontroller, which collects the data information of the photovoltaic power optimization system, and also controls the photovoltaic optimizing modules; and a second wireless communication module.

4. The photovoltaic power optimization system according to claim 3 , wherein the collected data information is transmitted to the first wireless communication module of the data center unit via the second wireless communication module of each of the photovoltaic optimizing module, and the data center unit transmits the collected data information to the inverter via the power line communication module.

5. The photovoltaic power optimization system according to claim 3 , wherein the inverter transmits the control information to the power line communication module of the data center unit via power line, and the data center unit transmits control information to the second wireless communication modules of the photovoltaic optimizing modules via the first wireless communication module.

6. The photovoltaic power optimization system according to claim 3 , wherein each of the second wireless communication module communicates wirelessly with the second wireless communication module of the adjacent photovoltaic optimizing module.

7. The photovoltaic power optimization system according to claim 1 , wherein the wireless communication is a WiFi communication protocol.

8. The photovoltaic power optimization system according to claim 1 , wherein the wireless communication is a ZigBee communication protocol.

Assignees

• Delta Electronics Shanghai Co

Inventors

• Zhu Xuancai
• Weng Bingwen
• Wang Qin
• Zhao Wei

Classifications

• H02J2101/25

  involving maximum power point tracking control for photovoltaic sources · CPC title

• H02J13/1335

  involving a local wireless network, e.g. Wi-Fi®, ZigBee® or Bluetooth® · CPC title

• H02J2101/24

  Photovoltaics · CPC title

• H02J13/1337

  involving the use of Internet protocols · CPC title

• H02J13/1331

  using wireless data transmission · CPC title