# US 10,122,176 B2 · Photovoltaic intelligent power supply

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- Number: US 10,122,176 B2
- Document ID: US10122176B2
- Status: Granted
- Kind: B2
- Application number: 15/528,515
- Filed: 2015-10-29
- Published: 2017-09-21
- Granted: 2018-11-06
- Earliest claimed: 2014-11-21
- Assignees: Crrc Zhuzhou Institute Co., Ltd.
- Applicants: Crrc Zhuzhou Institute Co., Ltd.
- Inventors: Jianghua Feng; Fang Jian; Qiang Wu; Jijing Guo; Hengliang Wu; Honghao Zhang; Yifeng Chen; Haiyan Tang; Nan Wang; Xianggui Zhao; Zhaoyi Liu; Shaolong Li; Rong Zhang
- Web page: https://patentgrep.com/patent/US10122176B2

## CPC

- H02S 50/00: Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02J 3/381: {Dispersed generators}
- H02S 40/30: Electrical components
- H02S 40/32: comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
- H02S 40/36: characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
- H02S 50/10: Testing of PV devices, e.g. of PV modules or single PV cells (testing of semiconductor devices during manufacturing {H10P74/00})
- H02J 2101/25: {involving maximum power point tracking control for photovoltaic sources}
- H02M 3/158: including plural semiconductor devices as final control devices for a single load
- Y02E 10/56: Power conversion systems, e.g. maximum power point trackers
- H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A photovoltaic intelligent power supply, comprising a plurality of unit modules, and a communication unit (103) and a control unit (106), wherein all the unit modules are connected to the control unit (106) and the communication unit (103); each unit module comprises an input collection unit (101), a data acquisition unit (102), a boost unit (104), an arc isolation unit (105) and an anti-PID unit (107), wherein the input collection unit (101) is connected to a photovoltaic module; the data acquisition unit (102) is configured to acquire voltage and current state signals; the boost unit (104) is configured to perform interleaving chopping and operate in an MPPT mode; the arc isolation unit (105) is configured to receive instructions sent by the control unit (106) to execute opening and closing; and the anti-PID unit (107) is configured to receive instructions sent by the control unit (106) so as to generate proper DC voltages to be applied between a negative electrode of a cell panel and the ground. The photovoltaic intelligent power supply supports MPPT control, and can effectively detect an arc and start protection, can ensure normal operation of an inverter, and improve reliability of a power generation system.

## Claims

### Claim 1

A photovoltaic intelligent power supply, comprising: at least one unit module, a communication unit (103) and a control unit (106), wherein the at least one unit module are connected to the control unit (106) and the communication unit (103), the at least one unit module comprises an input collection unit (101), a data acquisition unit (102), a boost unit (104), an arc isolation unit (105) and an anti-PID unit (107), wherein the input collection unit (101) is connected to a photovoltaic module, the data acquisition unit (102) is configured to acquire voltage and current state signals, the boost unit (104) is configured to perform interleaving chopping and operate in an MPPT mode, the arc isolation unit (105) is configured to receive instructions sent by the control unit (106) to execute opening and closing; and the anti-PID unit (107) is configured to receive instructions sent by the control unit (106) so as to generate proper DC voltage to be applied between the negative electrode of a cell panel and ground, wherein the boost unit (104) comprises an input capacitor (301), two IGBT modules (302) comprising backward diodes, two inductors (303), two major circuit diodes (304), an output capacitor (305) and two bypass diodes (306), wherein when the data acquisition unit (102) detects that input voltage is higher than output voltage, boost circuits in the boost unit (104) do not work, and current flows through the bypass diodes (306); and when the input voltage is lower than the output voltage, the boost circuits in the boost unit (104) work, while the bypass diodes (306) are naturally switched off, the two boost circuits are enabled to interleaving chopping output according to requirements of MPPT,
wherein a second drive circuit (208) is disposed between the control unit (106) and the anti-PID unit (107) to receive instructions from the control unit (106) and then drive the anti-PID unit (107).

### Claim 2 (depends on 1)

The photovoltaic intelligent power supply according to claim 1, wherein the input collection unit (101) comprises more than two input branches connected to the photovoltaic module, and each input branch is connected in series to a fuse.

### Claim 3 (depends on 1)

The photovoltaic intelligent power supply according to claim 1, wherein the arc isolation unit (105) comprises a DC circuit breaker.

### Claim 4 (depends on 1)

The photovoltaic intelligent power supply according to claim 1, wherein the anti-PID unit (107) is constituted by a DC/DC unit or AC/DC unit, and powered by an anti-PID power source (210).

### Claim 5 (depends on 1)

The photovoltaic intelligent power supply according to claim 1, wherein a first drive circuit (207) is disposed between the control unit (106) and the boost unit (104) to directly receive instructions from the control unit (106) and then drive boost circuits.