Tài liệu của Sungrow để xử lý lỗi và vận hành inverter. Mong tài liệu sẽ giúp ích được cho anh em kỹ thuật Contents 1 Product Appearance 6 2 Introduction to System PCB 9 2 1 PCB Functions 10 2 2 PCB Interfaces 11 2 2 1 Interfaces of DSP Control Board 11 2 2 2 Description of Pinboard 13 2 2 3 Description of.
Contents Product Appearance Introduction to System PCB 2.1 PCB Functions 10 2.2 PCB Interfaces 11 2.2.1 Interfaces of DSP Control Board 11 2.2.2 Description of Pinboard 13 2.2.3 Description of Measurement Board 15 2.2.4 Description of Branch Current Insulation Detection Board 17 2.2.5 Description of DC Charge & Discharge Board 18 2.2.6 Description of LVRT Power Box 20 2.2.7 Description of Standby Power Box .21 2.2.8 Description of Driver Board .22 2.2.9 Description of Intelligent Unit or IO Board 23 2.2.10 Description of Temperature & Humidity Board .25 Fault Analysis and Troubleshooting .27 3.1 PDP Protection (PDP-pro) 31 3.2 Contactor contact flt 33 3.3 AC Current Unbalanced (Mism-Iac) 34 3.4 Reactor Over-temperature (Lover-temp) .35 3.5 Control Cabinet Temperature Fault (Temp control cabinet flt) 36 3.6 DC Undervoltage (Vdc-Low) 38 Page of 65 3.7 Neutral Point Potential Offset (V-midpoint offset) 38 3.8 Temperature Anomaly Fault (Temp-flt) 39 3.9 Grid Over-/Under-voltage and Frequency Fault (Vac-high, Vac-low, F-fault) 41 3.10 Islanding (No grid) 41 3.11 DC Voltage Sampling Fault (Vdc-samp-flt) 42 4.12 Soft Start Fault (Soft Start-flt) 43 3.13 SPD Fault (DC SPD flt, AC SPD flt) .44 3.14 DC Overvoltage (Vdc-high) 45 3.15 Carrier Synchronization Fault (carrier synch flt) 46 3.16 Parallel Operation Communication Fault (com-Failure) .47 3.17 Device Code Repeating Fault (Encoding repeat) 47 3.18 PV Polarity Reverse (PV pol-rev) 48 3.19 Hardware Fault (Hardware-flt) 49 3.20 AC Overcurrent and Overload Fault (lac-high, Overload-pro) .49 3.21 Leakage Current Protection (I leakage-pro) .50 3.22 Module Overtemperature (PM-high) 51 3.23 Fan Fault (Fan-flt) 52 3.24 GFDI Protection (GFDI-pro) 56 3.25 Current Unbalanced 57 3.26 DC Switch Anomaly (DC switch abnormal) 57 3.27 Branch Board Communication Anomaly (IDM-com-flt) 58 3.28 CT Unbalanced 59 3.29 GFRT Run 59 3.30 DC Sensor Anomaly (DC Sensor-err) 60 3.31 AC Cabinet Overtemperature (AC cabinet over –temp) .60 3.32 DSP-MDC Communication Anomaly (DSP-MDC com-flt) 61 3.33 Inverter Unit Communication Fault (Unit-com-flt) .62 3.34 Branch Forward/Reverse Overcurrent (Branch fwd/rev-ldc-high) 63 3.35 Temperature & Humidity Board Communication Fault (T&H-com-flt) 64 Troubleshooting Guideline for SUNGROW Inverter Product Appearance This section introduces the inverter version, main components and layout as shown in the following figures Indicators Inverter LCD Network port Front view Emergencystop button Inverter unit module Standby power box DSP board and pinboard Measuring board DC charge/discharge board LVRT power box Inverter unit 1# Inverter unit 2# Inverter unit 3# Inverter unit cabinet Fans PMDpower box ACcontactorof inverter unit Standbypower board Intelligent unit/IO Brach insulation monitoringAC switch board AC fuse block AC PMD AC cabinet Communication PMD Inverter AC cabinet Temperature humidity collection board Smoke sensor DC switch DC fuse Inverter DC cabinet Inverter indicators state Inverter LCD Network port Inverter emergency stop button Inverter panel & Introduction to System PCB Refer to the following figure for the PCB system diagram of SG3125HV Branch current sampling DC1+ DC1DCm+ DCm+ AC current sampling DC current sampling DC switch = A1 Filter ~ PE voltage sampling DC SPD Branch and insulation detection (PL) Monit Grid Contactor DC A2 D8 river board IGBT driver Driver fault detection DSP board (PA) DC current, leakage current 3-phase AC current or branch current 2.Control branch switch 3.Monitor DC insulation resistance Griage d volt sg amplin PE AC SPD Power and signal conditioning (PD) Sampling signal conditioning Input and output IO control Carrier syn RS485 Communication Driver signal DC dis-/charge board (PZ) DC charge DC discharge AC sh witc Internal AC Grid current voltage samplingsampling Standby power box (PH) Low consumption supply at night Measurement board (PG) RS485 Sampling signal conditioning LVRT power box (PE) AC & DC redundant supply Input and output IO control Inversion unit Intelligent RS485 10 unit/IO(PT) Communicate to inverter Communicate to touch CANscreen Communicate to server end For external device communication Temperature and h) umidity board (PW Monitoring of OMD state Communication of temperature and humidity board RS485 Inverter PCB system diagram of SG3125HV As shown in the figure above, the system PCB is mainly inside the inverter unit and the inverter Inside the inverter unit are the DSP control board, power and signal conditioning pinboard, measurement board, branch and insulation detection board, DC charge/discharge board, LVRT power box, standby power box, and driver board Inside the inverter are the intelligent unit or IO board and the temperature & humidity collection board The following section will describe the functions and interfaces of the PCB 2.1PCB Functions The functions of inverter are described in Table Table Functions of inverter No PCB name Position Code in Fucntions diagram DSP control board In the front of the AC cabinet of the inverter unit PA Current signal sampling; CAN, RS485 communication and carrier fiber optic transmission circuit; IGBT driver signal modulator circuit; DSP peripheral circuit and related control algorithm and logic realization Pinboard Measrumen t board In the front of the AC cabinet of the inverter unit In the front of the AC cabinet of the inverter unit PD Voltage signal sampling; temperature sampling; input node (e.g feedback node of contactor, reactor overtemperature node and etc.) detection; output node (e.g discharge board, AC contactor control and etc.) PG Inverter input & output electric parameter measurement; logic realization of low power consumption at night; PID power suppression or repair mode control; RS485, CAN and LAN communication Branch ins ulation mo nitoring board 5 On the left of the AC cabinet In the front DC charge & of the discharge boa inversion rd cabinet of the inverter unit In the front of the inversion LVRT power b cabinet of ox the inverter unit On the left of the AC PL Branch current sampling; DC switch trip control; detection of DC positive & negative resistance to the ground; RS485 communication PZ DC bus charge at SVG mode and DC bus discharge when the AC & DC input is disconnected PE AC & DC double input redundant power supply; supply power to PCB, AC contactor and DC switch PH Supply power to the communication cabinet Standby In the front of power box the inversion unit at the low power consumption mode cabinet of the inverter unit On the right of the AC at night cabinet Driver board Power / module 10 Temperature On the top of &huditiy the inverter Intelligen t unit/IO On the right of the AC cabinet For conditioning and driving of power tube driver signal PW PT For detection of the temperature and humidity inside the inverter For communication with the inverter unit, touch screen and the server end, and integrate the communication with external devices like the PVS and transformer 2.2PCB Interfaces This section will describe the definition of the abovementioned PCB interfaces Please refer to the circuit diagram of corresponding version during on-site troubleshooting 2.2.1 Interfaces of DSP Control Board The DSP control board is identified by PA in the corresponding circuit diagram Please see Figure for the description of the interfaces ... 64 Troubleshooting Guideline for SUNGROW Inverter Product Appearance This section introduces the inverter version, main components and layout as shown in the following figures Indicators Inverter. .. Emergencystop button Inverter unit module Standby power box DSP board and pinboard Measuring board DC charge/discharge board LVRT power box Inverter unit 1# Inverter unit 2# Inverter unit 3# Inverter unit... collection board Smoke sensor DC switch DC fuse Inverter DC cabinet Inverter indicators state Inverter LCD Network port Inverter emergency stop button Inverter panel & Introduction to System PCB