Wind-Solar Hybrid Inverters
Introduction:
Grid-tie wind-solar hybrid inverter converts the variable direct current to alternating current. Besides, it can control and modulate frequency, voltage, current, phase, active power, reactive power and synchronization of alternating current.
According to the characteristics of wind and solar power generation system, grid-tie wind-solar hybrid inverter employs main loop topology structure mode (DC voltage booster > inverter output). This structure adopts a unique triple booster circuit which has high working efficiency (95% to 98%), able to provide stable direct voltage to subsequent conversion. Grid-connected inverters are used for UPS, urban public transportation system, transducer, and so on.
Performance :
1. At the input end of grid-tie wind-solar hybrid inverter, fully-controlled PWM rectifying mode is used. This mode enables power factor to reach 0.99, greatly increasing effective outputs of wind power generator. However, it is only suitable for inverters (the power is more than 30 Kw).
2. Grid-connected inverters are featured by electric supply/inverter output automatic switchover and electric supply charging. On-line UPS output is adopted to avoid instantaneous power-down when the inverter switches electricity output.
3. The optional items as showed in the following table can compensate for limited capacity of wind and solar battery. And they can make the inverter more convenient.
4. When inputting very high voltage, grid-tie wind-solar hybrid inverter employs dynamic power divider and MPPT control mechanism to shunt some voltage for subsequent power supply. This to a great extent explores power supply capacity of wind and solar energy. Compared with that of other controllers and inverters of the same capacity, the output of grid-tie inverter is 10% to 15% higher.
5. It can make use of more than 35% to 45% effective power.
6. Grid-tie wind-solar hybrid inverter is featured by low construction cost, high efficiency, excellent performance and small size. It possesses features of low fault rate, light weight and is easy to use as well.
7. Various flexible remote/short network, optical fiber and communication interface (including RS-232/485/CAN2.0) can conveniently link to upper computer and achieve remote control.
8. Grid-tie wind-solar hybrid inverter is equipped with built-in multistage electric filter and lightning arrester to avoid lightning and high pulse. Thus, it is suitable for high-end communication equipment.
9. The conversion efficiency is over 95% and the distortion degree is as low as less than 3%.
10. Overvoltage, undervoltage, leeway and other input control protections are used to ensure wind power generator to work stably.
Parameters:
The following data serves as reference to know the performance of grid-tie wind-solar hybrid inverter.
| Model | XFSZ-200K |
| Rated Capacity (Kw) | 200 (Wind Power Generation:150 Kw, Solar Power Generation: 100 Kw) |
| Max. Capacity (Kw) | 250 |
| Input Power Factor (Three-phase PWM Rectifier) (Optional) (Wind Power Generation) | COS￠-0.99 |
| Rated Input Voltage (Wind Power Generation)(V/AC) | Three phase, 380/50, +25% , 20-65HZ |
| Rated Input Voltage (Solar Power Generation) (V/DC) | 500/50, +25% |
| Max. Voltage of Input Open-Circuit Line (Wind Power Generation) (V/AC) | Three phase 500 |
| Max. Voltage of Input Open-Circuit Line (Solar Power Generation) (V/DC) | 800 |
| Control Range of Built-in Controller (V/DC) | 500/50, +30% |
| Rated Output Voltage (V/AC ) | 380/220 ± 2% Three-phase four-wire system +PE |
| Accepted Load Imbalance Degree | 100% |
| Output Voltage Frequency (Hz) | 50/60 (Either) |
| Output Waveform | Sine wave |
| Degree of Distortion (Linear Load) | < 3% |
| Conversion Efficiency | > 95% |
| Overload Capacity | 110% (Three Minutes), 150% (Three Seconds) |
| Insulating Strength | AC 2.5 KV, Not Breaking Down the Shell in One Minute |
| Working Noise (db) | < 60 (one meter away) |
| Overall Dimension (mm) | Horizontal: 2000 × 1000 × 800 |
| Weight (Kg) | 400 |
| Height (Altitude) (m) | ≤ 4000 |
| Operating Environment | Non-Corrosion Acid-Base Gas |
| Ambient Temperature (℃) | -20-65℃; > 45℃ (The capacity decreases by 0.9% per degree.) |
| Ambient Humidity | < 90% (Non-Condensate) |
| Type of Cooling | Temperature Control Forced Air Cooling |
| Modes of Protection | Short Circuit, Over-Temperature, Overload, Undervoltage and Overvoltage. |
| LCD Liquid Crystal Display (Optional: Touch Screen) | Input and Output Voltage, Current/Frequency, Running State/Fault Conditions |
| Auxiliary Control Mode of Built-in Charge Controller (Wind Power Generation) | Overvoltage, Undervoltage, Short-Circuit Soft Electromagnetic Brake, (Optional: Leeway, Brake, Variable Pitch Propeller, Cast Loose Device) |
| Working Mode of Built-in Charge Controller (Wind Power) | PWM Electrodeless Modulation/ External Unloading Resistance |
| Working Mode of Built-in Charge Controller (Solar Power) | MPPT Modulation |
| Rated Capacity of Built-in Charge Controller (Wind Power) (Kw) | 150 |
| Rated Capacity of Built-in Charge Controller (solar Power) (Kw) | 100 |
| Max. Charging Voltage of Controller (Wind and Solar Power Generation) (V/DC) | 628 (Can Be Set) |
| Max. Charging Current of Controller (Wind and Solar Power Generation) (A/DC) | 318 (Can Be Set) |
| Min. Discharging Voltage of Controller (Wind and Solar Power Generation) ( V/DC) | 455 (Can Be Set) |
| Charging Mode of Built-in Controller (Wind and Solar Power Generation) | Constant Voltage-Limited Current |
| Suitable Battery Capacity and Voltage (AH/V) | 1000-3000 2V 260 Cascades (Standard Battery Voltage is 520V.) |
| Battery Operation Management Detection Module (Optional) | Battery Capacity, Charge and Discharge and timing Charge and Discharge |
| Electric Supply or Generator Charging Interface (Optional) | 40 (Kw) |
| Inverter/Electric Supply Switch and Max. Power (Optional) | 200 (Kw) |
| Output Inverter/Electric Supply Switch On-line Device (Optional) | Switching Time: 2 Ms ≤ |
| Communication Interface (Optional) | RS-232/ 485 or CAN2.0 |
| Remote Network Control Interface (Optional) | Ethernet net module interface conforms to all stipulations about 10Base-T twisted pair connection in IEEE 802. |
| PV Confluence Component | At Most 20 Photovoltaic Channels |
| Lightning Protection at Input End (Optional) | C Level 20-40 KA |
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