Solar DC Water Pump
Solar DC Water Pump System
## Solar DC Water Pump System
A Solar DC Water Pump System uses electricity generated by photovoltaic (PV) panels to power a DC water pump directly. The system typically consists of solar panels, a pump controller, and a DC pump.
Because the pump operates on DC power, no DC-to-AC conversion is required. This simplifies system design and reduces equipment costs compared with AC pumping systems.
Solar DC pumping systems are commonly used for:
* Agricultural irrigation
* Livestock watering
* Garden irrigation
* Rural water supply
* Small-scale water transfer
* Off-grid water applications
They are particularly suitable for locations where grid electricity is unavailable and water demand is moderate.
Compared with conventional diesel-powered pumping systems, solar DC pumps reduce fuel consumption, require less maintenance, and operate using renewable solar energy.
Core System Components
Main Components of a Solar DC Water Pump System
A typical Solar DC Water Pump System consists of a PV array, a DC pump controller, and a DC water pump.
PV Array (Solar Panels)
The PV array converts sunlight into DC electricity to power the pumping system.
Because DC pumps operate within specific voltage ranges, the solar panel configuration must be matched to the rated voltage of the pump, such as 12V, 24V, 48V, 72V, or 110V DC.
DC Pump Controller
The DC pump controller manages power delivery between the solar panels and the pump while providing system protection.
Key functions include:
MPPT (Maximum Power Point Tracking)
MPPT technology continuously tracks the optimal operating point of the PV array to maximize energy harvest under changing sunlight conditions.
System Protection
The controller typically provides:
Overvoltage protection
Undervoltage protection
Overcurrent protection
Overload protection
Dry-run protection
These functions help improve system reliability and protect the pump from abnormal operating conditions.
DC Water Pump
The DC water pump transfers water from the source to the required destination.
Common pump types include:
DC submersible pumps
DC surface pumps
DC centrifugal pumps
DC borehole pumps
Most modern systems use brushless DC (BLDC) motors due to their longer service life, higher efficiency, and reduced maintenance requirements compared with traditional brushed motors.
Advantages of DC Pump Systems
Compared with AC solar pumping systems, DC pump systems offer:
Simplified system design
Lower equipment costs
Higher overall efficiency
Easier installation
Reduced maintenance requirements
These advantages make DC pumping systems suitable for small and medium-sized irrigation, livestock watering, and off-grid water supply applications.
Key Advantages
Ultra-High Energy Efficiency (No Conversion Loss): Solar panels naturally generate DC power. Because DC pumps utilize this electricity directly without converting it to AC via an inverter, energy conversion losses are avoided, resulting in higher overall fluid efficiency.
Low-Voltage Operation (Safe and Reliable): Most small-to-medium DC water pump systems operate at low DC voltages (such as 24V, 48V, or 72V), which are well below the human safety voltage threshold. This minimizes the risk of electric shock during installation, testing, and daily maintenance.
Easy Installation & High Mobility: Omitting a bulky inverter makes the entire system lighter with fewer components. It is highly suitable for setting up mobile pumping systems that can be easily transferred between different water sources like streams, ponds, or canals.
Excellent Cost-Effectiveness: For domestic agriculture, garden irrigation, or livestock watering projects with moderate daily water needs and lift requirements, the overall equipment procurement and installation costs of a DC system are typically lower than those of an AC system.
Main Differences Between DC and AC Systems
| Feature | Solar DC Pump System | Solar AC Pump System |
| System Structure | Solar Panels + DC Controller + DC Pump (More streamlined) | Solar Panels + Solar Inverter + AC Pump |
| Applicable Power | Typically suitable for low-to-medium power (hundreds of watts to a few kilowatts) | Suitable for all power ranges, especially high power (several kilowatts to over 100 kW) |
| Primary Applications | Home gardening, small-scale livestock, drip irrigation, shallow well pumping | Large-scale agricultural irrigation, deep well pumping, regional water supply projects |
| Power Source Hybridization | Less straightforward to seamlessly integrate with the grid (often requires extra charge controllers or transfer switches) | Highly capable of achieving seamless hybrid input between solar and the local grid or a diesel generator via the inverter |
| Maintenance Features | Brushless DC pumps have a long lifespan, but motor damage usually requires replacing the entire unit | AC motors utilize mature, highly standardized technology, making them easy to repair or replace locally |
Primary Applications
Home Gardening & Landscape Fountains: Used for watering courtyard plants, circulating water in landscape fish ponds, and powering solar fountains.
Modern Micro-Irrigation: Ideal for precision water control in drip irrigation and micro-sprinkler systems within greenhouses, orchards, and small farms.
Livestock Watering in Remote Pastures: Establishes automated drinking stations for livestock like cattle and sheep in grasslands or mountainous areas without grid coverage.
Field Camping & Temporary Living Water: Portable DC water pumps are perfect for RV travel, field operations, or daily water extraction at remote outposts.
Pump parameters
| Model No. | Pump model | Daily water flow(m³) | Pump head(M) | Model No. | Power (Kw) | Min MPPT Voltage(V) | Max Open-circuit Voltage(V) | Model No. | Power(kW) | Configuration | Junction box |
| 系统型号 | 水泵 | 日出水量（立方/天） | 流量范围(m) | 控制器 | 功率(KW) | 最小MPPT电压(V) | 最大开路电压(V) | 太阳能电池板 | 功率(KW) | 电池板配置 | 汇流 |
| MNE-DC0.7/30-24 | SHP0.7/30-24 | 9～3 | 10～30 | MNE-SPD200V2 | 0.2 | 24 | 50 | YL-250P | 0.25 | 1PCS*1 | 1 To 1 |
| MNE-DC1/40-36 | SHP1/40-36 | 12～5 | 20～40 | MNE-SPD300V3 | 0.3 | 36 | 150 | YL-250P | 0.5 | 2PCS*1 | 1 To 1 |
| MNE-DC6/25-48 | SHP6/25-48 | 40～21 | 5～25 | MNE-SPD650V4 | 0.65 | 48 | 150 | YL-250P | 1 | 2PCS*2 | 2 To 1 |
| MNE-DC3.5/40-48 | SHP3.5/40-48 | 22～9 | 15～40 | MNE-SPD650V4 | 0.65 | 48 | 150 | YL-250P | 1 | 2PCS*2 | 2 To 1 |
| MNE-DC2.5/60-48 | SHP2.5/60-48 | 14～6 | 20～60 | MNE-SPD650V4 | 0.65 | 48 | 150 | YL-250P | 1 | 2PCS*2 | 2 To 1 |
| MNE-DC14/12-110 | SHP14/12-110 | 72～40 | 7～12 | MNE-SPD800V6 | 0.8 | 110 | 300 | YL-250P | 1.25 | 5PCS*1 | 1 To 1 |
| MNE-DC6/29-110 | SHP6/29-110 | 35～25 | 19～29 | MNE-SPD800V6 | 0.8 | 110 | 300 | YL-250P | 1.25 | 5PCS*1 | 1 To 1 |
| MNE-DC4/42-110 | SHP4/42-110 | 26～13 | 32～42 | MNE-SPD800V6 | 0.8 | 110 | 300 | YL-250P | 1.25 | 5PCS*1 | 1 To 1 |
| MNE-DC3/55-110 | SHP3/55-110 | 17～9 | 35～55 | MNE-SPD800V6 | 0.8 | 110 | 300 | YL-250P | 1.25 | 5PCS*1 | 1 To 1 |
| MNE-DC10/22-110 | SHP10/22-110 | 51～33 | 12～22 | MNE-SPD1KV6 | 1 | 110 | 300 | YL-250P | 1.5 | 6PCS*1 | 1 To 1 |
| MNE-DC4/45-110 | SHP4/45-110 | 24～17 | 32～45 | MNE-SPD1KV6 | 1 | 110 | 300 | YL-250P | 1.5 | 6PCS*1 | 1 To 1 |
| MNE-DC3/70-110 | SHP3/70-110 | 16～11 | 45～70 | MNE-SPD1KV6 | 1 | 110 | 300 | YL-250P | 1.5 | 6PCS*1 | 1 To 1 |
| MNE-DC1.8/100-110 | SHP1.8/100-110 | 11～5 | 70～100 | MNE-SPD1KV6 | 1 | 110 | 300 | YL-250P | 1.5 | 6PCS*1 | 1 To 1 |
| MNE-DC14/17-280 | SHP14/17-280 | 78～46 | 10～17 | MNE-SPD1K2V8 | 1.2 | 300 | 450 | YL-200P | 2 | 10PCS*1 | 1 To 1 |
| MNE-DC7/50-280 | SHP7/50-280 | 36～22 | 20～50 | MNE-SPD1K2V8 | 1.2 | 300 | 450 | YL-200P | 2 | 10PCS*1 | 1 To 1 |
| MNE-DC4/75-280 | SHP4/75-280 | 20～13 | 55～75 | MNE-SPD1K2V8 | 1.2 | 300 | 450 | YL-200P | 2 | 10PCS*1 | 1 To 1 |
| MNE-DC1.8/125-280 | SHP1.8/125-280 | 10～4 | 85～125 | MNE-SPD1K2V8 | 1.2 | 300 | 450 | YL-200P | 2 | 10PCS*1 | 1 To 1 |
| MNE-DC10/29-280 | SHP10/29-280 | 58～33 | 20～29 | MNE-SPD1K6V8 | 1.6 | 300 | 450 | YL-250P | 2.5 | 10PCS*1 | 1 To 1 |
| MNE-DC3/105-280 | SHP3/105-280 | 18～9 | 70～105 | MNE-SPD1K6V8 | 1.6 | 300 | 450 | YL-250P | 2.5 | 10PCS*1 | 1 To 1 |
| MNE-DC1.8/170-280 | SHP1.8/170-280 | 10～5 | 110～170 | MNE-SPD1K6V8 | 1.6 | 300 | 450 | YL-250P | 2.5 | 10PCS*1 | 1 To 1 |
| MNE-DC20/16-290 | SHP20/16-290 | 127～80 | 10～16 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC15/25-290 | SHP15/25-290 | 109～70 | 15～25 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC10/46-290 | SHP10/46-290 | 66～39 | 25～46 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC6/80-290 | SHP6/80-290 | 42～30 | 45～80 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC4/105-290 | SHP4/105-290 | 28～17 | 75～105 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC2.5/140-290 | SHP2.5/140-290 | 16～11 | 110～14 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC1.8/210-290 | SHP1.8/210-290 | 11～5 | 140～210 | MNE-SPD2KV8 | 2 | 300 | 450 | YL-250P | 3 | 12PCS*1 | 1 To 1 |
| MNE-DC18/35-300 | SHP18/35-300 | 100～60 | 15～35 | MNE-SPD2K6V8 | 2.6 | 300 | 450 | YL-200P | 4 | 10PCS*2 | 2 To 1 |
| MNE-DC6/105-300 | SHP6/105-300 | 34～24 | 65～105 | MNE-SPD2K6V8 | 2.6 | 300 | 450 | YL-200P | 4 | 10PCS*2 | 2 To 1 |
| MNE-DC4/140-300 | SHP4/140-300 | 23～12 | 105～140 | MNE-SPD2K6V8 | 2.6 | 300 | 450 | YL-200P | 4 | 10PCS*2 | 2 To 1 |
| MNE-DC22/20-300 | SHP22/20-300 | 129～90 | 10～20 | MNE-SPD3KV8 | 3 | 300 | 450 | YL-250P | 5 | 10PCS*2 | 2 To 1 |
| MNE-DC10/65-300 | SHP10/65-300 | 52～34 | 40～65 | MNE-SPD3KV8 | 3 | 300 | 450 | YL-250P | 5 | 10PCS*2 | 2 To 1 |
| MNE-DC3/210-300 | SHP3/210-300 | 17～7 | 130～210 | MNE-SPD3KV8 | 3 | 300 | 450 | YL-250P | 5 | 10PCS*2 | 2 To 1 |