EP-Electric Motor For Air Compressor-180 series
The EP-Electric Motor For Air Compressor-180 series is engineered for high-efficiency, reliability, and versatility across various industrial applications, such as electric city buses, logistics trucks, municipal sanitation vehicles, and construction machinery. The motor offers a range of models with voltage options from 320 VDC to 700 VDC, providing versatility for different operational environments.
Key features include a rated power of 4 kW for models like the 180ST-SNT380-040-15A, with a peak power output of 12 kW and an efficiency rate of 93.1%.
The EP-Electric Motor For Air Compressor-180 series mechanical performance is reflected in its low torque ripple and high starting torque, with a continuous torque output of 25.5 Nm.
1. Technical Specifications of EP-Electric Motor For Air Compressor-180 series
| Model | 180ST-SNT220-023-15A | 180ST-SNT380-023-15A | 180ST-SNT220-030-15A | 180ST-SNT380-030-15A | 180ST-SNT380-040-15A | 180ST-SNT380-040-30A |
|---|---|---|---|---|---|---|
| Controller Voltage Range (VDC) | 320-420 | 540-700 | 320-420 | 540-700 | 540-700 | 540-700 |
| Base Number | 180 | 180 | 180 | 180 | 180 | 180 |
| Rated Voltage (V) | 220 | 380 | 220 | 380 | 380 | 380 |
| Rated Power (kW) | 2.3 | 2.3 | 3 | 3 | 4 | 4 |
| Rated Torque (Nm) | 15 | 15 | 19 | 19 | 25.5 | 12.7 |
| Rated Speed (rpm) | 1500 | 1500 | 1500 | 1500 | 1500 | 3000 |
| Rated Current (A) | 7.73 | 4.73 | 9.96 | 5.568 | 7.5 | 7.3 |
| Rated Efficiency (%) | 93 | 92.9 | 92.9 | 92.5 | 93.1 | 93.21 |
| Peak Power (kW) | 6.9 | 6.9 | 9 | 9 | 12 | 12 |
| Number of Poles | 10 | 10 | 10 | 10 | 10 | 10 |
| Back EMF (20°C) (V/krpm) | 125.7 | 206.5 | 131.7 | 224.4 | 215 | 112 |
| Phase Resistance (75°C) (Ω) | 0.516 | 1.49 | 0.4 | 1.18 | 0.96 | 0.64 |
| Phase Inductance (mH) | 12.6 | 33.13 | 10.4 | 32.8 | 29.2 | 13.6 |
| Electrical Time Constant (ms) | 12.21 | 11.12 | 13 | 13.9 | 15.21 | 10.63 |
| Torque Constant (Nm/A) | 1.64 | 2.75 | 1.7 | 3.33 | 3.02 | 1.66 |
| Protection Rating | IP67 | IP67 | IP67 | IP67 | IP67 | IP67 |
| Insulation Class | H | H | H | H | H | H |
| Duty Cycle | S2-3min | S2-3min | S2-3min | S2-3min | S2-3min | S2-3min |
EP-Electric Motor For Air Compressor-180 series diagram
| Controller Voltage Range (VDC) | 540-700 | Number of Poles | 10 |
|---|---|---|---|
| Frame Size | 180 | Back EMF (20℃) (v/krpm) | 215 |
| Rated Voltage (V) | 380 | Phase Resistance (75℃) (Ω) | 0.96 |
| Rated Power (kW) | 4 | Line-to-Line Inductance (mH) | 29.2 |
| Rated Torque (Nm) | 25.5 | Electrical Time Constant (ms) | 15.21 |
| Rated Speed (rpm) | 1500 | Torque Constant (Nm/A) | 3.02 |
| Rated Current (A) | 7.5 | Protection Class | IP67 |
| Rated Efficiency (%) | 93.1 | Insulation Class | H |
| Peak Power (kW) | 12 | Duty Cycle | S2-3min |
4kW Electric Motor For Air Compressor-180 series efficiency map and power factor map
2. Working Principle of EP-Electric Motor For Air Compressor-180 series
The EP-Electric Motor For Air Compressor-180 series leverages the advanced principles of Permanent Magnet Synchronous Motor (PMSM) technology, representing a significant leap forward from conventional brushed DC or AC induction motors. At its core, the operation relies on the precise interaction between a rotating magnetic field generated by the stator windings and a permanent magnetic field created by high-energy rare-earth magnets embedded on the rotor. When three-phase alternating current—converted from the vehicle's high-voltage DC battery—is applied to the stator, it generates a magnetic flux that rotates at a synchronous speed. Unlike induction motors, where the rotor must "slip" to generate torque, the rotor in our electric motor compressor locks into synchronization with the stator field instantly. This synchronous operation ensures that the motor's speed is strictly controlled by the frequency of the drive current, resulting in highly accurate speed regulation and superior dynamic response, which is critical for maintaining stable air pressure in braking systems.
Efficiency and torque density are the hallmarks of this working principle. Because the rotor utilizes permanent magnets, there is no need to induce current into the rotor to create a magnetic field, thereby eliminating rotor copper losses. This results in the EP-Electric Motor For Air Compressor-180 series achieving efficiency levels above 93%, significantly higher than the 85-90% typical of induction motors. For an air compressor and motor setup, this means less battery energy is wasted as heat, directly translating to extended vehicle range. Furthermore, the PMSM design allows for high torque generation at low speeds. When the air compressor needs to start against high back-pressure in the tank, the motor for the compressor delivers peak torque immediately, ensuring a smooth, stall-free startup. The sinusoidal back-EMF waveform design further minimizes torque ripple, leading to quieter operation and reduced mechanical stress on the compressor pump head, making it an ideal engine for air compressor applications in noise-sensitive urban environments.
3. Material Quality & Advanced Construction
The EP-Electric Motor For Air Compressor-180 series achieves its class-leading performance through the use of premium materials and advanced manufacturing processes. We ensure that every motor compressor air drive unit is built to last.
Die-Cast Aluminum Housing
The EP-Electric Motor For Air Compressor casing is crafted from high-strength die-cast aluminum alloy. This material choice offers a dual advantage: it significantly reduces the overall weight of the electric motor for air compressor, contributing to vehicle lightweighting, and it provides superior thermal conductivity. This ensures efficient heat dissipation during continuous S2-3min duty cycles.
NdFeB Permanent Magnets
The rotor utilizes high-grade Neodymium Iron Boron (NdFeB) rare-earth magnets. These magnets are selected for their high coercivity and temperature stability, ensuring that the air compressor electric motor maintains its strong magnetic field and high efficiency even under extreme thermal stress, preventing demagnetization over long-term use.
Silicon Steel Stator Core
To maximize efficiency, the stator core is laminated with high-quality cold-rolled non-grain-oriented silicon steel sheets. This material minimizes eddy current and hysteresis losses. The precision stamping and stacking of these sheets are critical in achieving the >93% efficiency rating that defines our electric motors for air compressors.
4. How to install the air compressor electric motor？
Motor Mounting:
Ensure that the motor mounting area is clean and free from debris.
Use the proper mounting hardware, such as screws or bolts, to securely attach the motor to the designated mounting surface. The motor dimensions and mounting holes should align according to the technical drawings provided for your specific motor model.
Electrical Connections:
The motor should be connected to a DC power source within the voltage range specified in the technical parameters (e.g., 540–700 VDC for the 4kW motor).
Follow the wiring instructions to connect the power cables to the terminals, ensuring proper insulation and secure connections to prevent electrical hazards.
Double-check the voltage specifications for each motor type, such as the 180ST-SNT380-040-15A model, which requires a voltage of 380 VDC.
Cooling System:
Ensure that the motor's cooling system is in place, especially for high-power motors like the 4kW model. Proper airflow is essential for cooling the motor and preventing overheating.
Control System Setup:
If the motor comes with a control system, follow the wiring and installation guidelines for the servo drives or other control components.
Set up the motor's speed and torque controls, such as adjusting the frequency of operation based on your application needs.
Check Alignment:
Ensure that the motor shaft aligns with the connected mechanical system, like a compressor or fan, to avoid mechanical stress or failure.
Test and Monitor:
After installation, conduct a thorough test to check for any abnormal noises, vibrations, or heating during operation.
Monitor the motor's performance using diagnostic tools to verify that it is working within the specified efficiency parameters.
5. Electric Motor For Air Compressor's Application Scenarios
Electric City Buses
Serving as the primary air source for pneumatic braking and suspension systems. The 180 Series provides the high reliability required for frequent start-stop urban transit cycles.
Electric Logistics Trucks
Powering air brakes for heavy-duty logistics vehicles. Its high efficiency helps extend the delivery range, crucial for last-mile and intercity logistics.
Municipal Sanitation Vehicles
Operating in electric street sweepers and garbage trucks. The IP67 rating ensures the motor for the compressor survives daily washdowns and dusty operating conditions.
Construction Machinery
Used in electric loaders and excavators to drive auxiliary pneumatic systems. The robust construction withstands the high vibration and shock loads typical of construction sites.
6. About EVER-POWER
At EVER-POWER, we are the Electric Motor for Air Compressor manufacturers. We have a team of over 800 dedicated employees, including more than 100 professional technical experts who form our elite R&D team focused on new energy vehicle motor and control technologies.
We have advanced simulation tools to optimize all aspects of motor power consumption and mechanical performance. Our manufacturing system is equipped with high-speed stamping machines, continuous vacuum impregnation equipment, and automated assembly lines. We hold ISO9001 and IATF16949 quality certifications, ensuring that every product meets the highest automotive industry standards.
Our products, including automotive power steering pump drive motors, air compressor motors, and servo drives, are widely used in the main drive systems, air conditioning systems, and steering assist systems of new energy vehicles worldwide.
Why Choose EVER-POWER?
- ✓ Technical Leadership: 100+ R&D experts and PhDs.
- ✓ Quality Certified: Advanced ISO quality management systems.
- ✓ Global Service: Trusted by OEMs worldwide.
7. Related Products
Gearboxes
High-precision gearboxes compatible with our motor series for diverse industrial automation needs.
Motors
Powerful propulsion motors delivering high torque for electric buses and logistics vehicles.
FAQ
Q1. How do I select the right electric motor for air compressor replacement in my fleet of electric buses?
A1. To choose the correct replacement air compressor pump motor, you need to match the voltage (e.g., 380V or 540V) and power rating (e.g., 2.3kW or 4kW) of your current system. Our 180 Series offers a wide voltage range (320-700V) and standard mounting interfaces, making it a versatile option for most commercial EV fleets.
Q2. What is the benefit of using a PMSM air compressor motor compared to a standard induction motor?
A2. A PMSM (Permanent Magnet Synchronous Motor) air compressor electric motor offers significantly higher efficiency (>93%) compared to induction motors (~88%). This translates to less energy wasted as heat and extended battery range for your electric vehicle. Additionally, PMSM motors provide higher torque density in a smaller, lighter package.
Q3. What maintenance is required for the EP-Electric Motor For Air Compressor-180 series for air compressors?
A3. Thanks to the brushless PMSM design and sealed IP67 housing, the EP-180 electric motors for air compressors are virtually maintenance-free. There are no brushes to replace, and the bearings are sealed for life. Regular visual inspections of the electrical connections and mounting bolts are generally sufficient.
Q4. What is the IP rating of this EP-Electric Motor For Air Compressor, and can it withstand wet conditions?
A4. The EVER-POWER 180 Series features an IP67 protection rating. This means the motor for the compressor is fully dust-tight and can withstand temporary submersion in water up to 1 meter deep. This high level of protection ensures reliability even when driving through waterlogged streets or operating in dusty construction sites.
Q5. Does EVER-POWER offer a 5hp electric motor equivalent in the 180 Series range?
A5. Yes, 5 horsepower is approximately 3.7 kW. Our 180ST-SNT380-040-15A model is rated at 4kW, making it a perfect, slightly more powerful equivalent to a standard 5hp electric motor. It provides ample overhead for demanding compression tasks without being underpowered.
Q6. Is this motor suitable as a compressor with motor integrated unit for OEM manufacturing?
A6. Absolutely. We work with many OEMs to provide the motor as part of an integrated compressor with motor assembly. Our R&D team can collaborate with you to customize the shaft dimensions and flange mountings to perfectly mate with your specific compressor head design.
Q7. How does Class H insulation benefit the engine for air compressor applications?
A7. Class H insulation allows the motor components to withstand internal temperatures up to 180°C. Since an engine for air compressor often runs in short, intense bursts (S2-3min duty) which generate significant heat, Class H insulation prevents motor burnout and extends the operational lifespan of the unit in high-temperature environments.
Q8. When should I choose the 3000 rpm model over the standard 1500 rpm compressor motor?
A8. You should choose the 3000 rpm model (e.g., 180ST-SNT380-040-30A) if your compressor pump is designed for high-speed operation or if you are using a reduction gearbox that requires a higher input speed. Standard 1500 rpm compressor motors are typically used for direct-drive setups where torque is prioritized over speed.
Additional information
| Edited by | PXY |
|---|
Product Quick Detail:
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Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.
Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
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