Title:
CONTROL CHIP FOR INTEGRATED SYSTEM OF PHOTOVOLTAIC INVERTER
Document Type and Number:
WIPO Patent Application WO/2017/197844
Kind Code:
A1
Abstract:
A control chip for an integrated system of a photovoltaic inverter, comprising a control unit (1) and an inverter unit (2). The control unit (1) comprises a main controller (10) and a PWM controller (11) that executes a control signal of the main controller (10) to output a pulse signal. The inverter unit (2) inverts a direct-current voltage into an alternating-current voltage according to the pulse signal. The main controller (10) is electrically connected to a movable end of a changeover switch (S1). A first end of the changeover switch (S1) is connected to a direct-current power supply end, and a second end thereof is grounded. When the movable end of the changeover switch (S1) is connected with the first end, the frequency of the alternating-current voltage outputted by the inverter unit (2) is adjusted to 60 HZ. When the movable end of the changeover switch (S1) is connected with the second end, the frequency of the alternating-current voltage outputted by the inverter unit (2) is adjusted to 50 HZ. When the movable end of the changeover switch (2) is suspended in air, the frequency of the alternating-current voltage outputted by the inverter unit (2) is adjusted to 55 HZ. The control chip has a high level of integration, and can meet multiple state grid frequency requirements.
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Inventors:
HE WEI (CN)
LIAO ZHIGANG (CN)
LIAO ZHIGANG (CN)
Application Number:
PCT/CN2016/103684
Publication Date:
November 23, 2017
Filing Date:
October 28, 2016
Export Citation:
Assignee:
GUANGDONG BESTEK E-COMMERCE CO LTD (CN)
International Classes:
H02M7/5387
Foreign References:
| CN102638054A | 2012-08-15 | |||
| CN101702526A | 2010-05-05 | |||
| CN201563071U | 2010-08-25 | |||
| CN106026745A | 2016-10-12 | |||
| CN205647289U | 2016-10-12 | |||
| CN204290948U | 2015-04-22 |
Attorney, Agent or Firm:
GUANGZHOU NANFENG PATENT AGENCY CO., LTD. (CN)
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