1. Technical Specifications of Automotive Power Steering Pump Driving Motor
| Model | 180ST-SNT220-023-15A | 180ST-SNT380-023-15A | 180ST-SNT220-030-15A | 180ST-SNT380-030-15A | 180ST-SNT380-043-15A |
|---|
| Controller Voltage Range (VDC) | 320-420 | 540-700 | 320-420 | 540-700 | 540-700 |
| Base Number | 180 | 180 | 180 | 180 | 180 |
| Rated Voltage (V) | 220 | 380 | 220 | 380 | 380 |
| Rated Power (kW) | 2.3 | 2.3 | 3 | 3 | 4.3 |
| Rated Torque (Nm) | 15 | 15 | 19 | 19 | 34.2 |
| Rated Speed (rpm) | 1500 | 1500 | 1500 | 1500 | 1200 |
| Rated Current (A) | 7.73 | 4.73 | 9.96 | 5.568 | 8.62 |
| Rated Efficiency (%) | 93 | 92.9 | 92.9 | 92.5 | 93.7 |
| Peak Power (kW) | 6.9 | 6.9 | 9 | 9 | 12.9 |
| Pole Number | 10 | 10 | 10 | 10 | 10 |
| Back EMF (20°C) (V/krpm) | 125.7 | 206.5 | 131.7 | 224.4 | 257.5 |
| Phase Resistance (75°C) (Ω) | 0.516 | 1.49 | 0.4 | 1.18 | 0.73 |
| Phase Inductance (mH) | 12.6 | 33.13 | 10.4 | 32.8 | 23 |
| Electrical Time Constant (ms) | 12.21 | 11.12 | 13 | 13.9 | 15.75 |
| Torque Constant (Nm/A) | 1.64 | 2.75 | 1.7 | 3.33 | 3.6 |
| Protection Rating | IP67 | IP67 | IP67 | IP67 | IP67 |
| Insulation Class | H | H | H | H | H |
| Operating Duty | S2-3min | S2-3min | S2-3min | S2-3min | S2-3min |
3kW automotive power steering pump driving motor diagram
| Controller Voltage Range (VDC) | 320-420 | Pole Number | 10 |
| Base Number | 180 | Back EMF (20°C) (V/krpm) | 131.7 |
| Rated Voltage (V) | 220 | Phase Resistance (75°C) (Ω) | 0.4 |
| Rated Power (kW) | 3 | Phase Inductance (mH) | 10.4 |
| Rated Torque (Nm) | 19 | Electrical Time Constant (ms) | 13 |
| Rated Speed (rpm) | 1500 | Torque Constant (Nm/A) | 1.7 |
| Rated Current (A) | 9.96 | Protection Rating | IP67 |
| Rated Efficiency (%) | 92.9 | Insulation Class | H |
| Peak Power (kW) | 9 | Operating Duty | S2-3min |
3 kW Automotive Power Steering Pump Driving Motor efficiency map and power factor map
2. Advantages and Features of the Automotive Power Steering Pump Driving Motor 130 Series
The 3 kW motor, specifically the 180ST-SNT380-030-15A model, offers a reliable and efficient solution for various applications. The motor operates with a voltage range of 320-420V and delivers a nominal power of 3 kW. It achieves a torque output of 19 Nm and operates at a speed of 1500 rpm. The efficiency rating of the motor stands at 92.9%, which ensures optimized performance while maintaining energy efficiency.
In terms of power consumption, the motor draws a current of 9.96 A, while its peak power reaches up to 9 kW. With a maximum efficiency point at 89.1463, the motor is designed to minimize energy losses and ensure stable operation. Additionally, it is rated for IP67 protection, offering durability in harsh environments. The motor also comes with a well-defined operating cycle (S2-3min), ensuring reliable performance even during intermittent duty cycles.
With voltage options of 220V and 380V, this series offers seamless compatibility with high-voltage DC buses found in modern electric powertrains.
Thermal management is another cornerstone of the 180 Series design. Heavy-duty steering applications involve frequent start-stop cycles and high-load holding maneuvers, which can generate significant heat. EVER-POWER utilizes a Class H insulation system, capable of withstanding temperatures up to 180°C, paired with an optimized electromagnetic design that maintains rated efficiencies above 92%. This ensures that even under the S2-3min duty cycle typical of steering operations, the motor remains thermally stable, preventing performance degradation over time. As a premier automotive power steering pump drive motors manufacturer, we subject every unit to rigorous end-of-line testing, including load performance, insulation resistance, and water tightness verification.
3. Working Principle of the 180 Series Automotive Power Steering Pump Driving Motor
The Automotive Power Steering Pump Driving Motor 180 Series operates on the principles of Permanent Magnet Synchronous Motor (PMSM) technology, which represents a significant leap forward from traditional induction motors or direct DC motors used in older automotive applications. The core mechanism involves a rotor embedded with high-energy rare-earth permanent magnets and a stator wound with copper coils. When AC power is supplied by the vehicle's inverter (converting the battery's DC power), it creates a rotating magnetic field in the stator. Because the rotor's magnets are permanently magnetized, the rotor locks into step with this rotating field and spins at the same synchronous speed, eliminating the "slip" associated with induction motors.
In the context of an Electric Hydraulic Power Steering (EHPS) system, this motor does not run continuously at a fixed speed. Instead, it receives signals from the vehicle's Steering Angle Sensor and Vehicle Speed Sensor via the Electronic Control Unit (ECU). When the vehicle is moving in a straight line, the motor operates at a very low idle speed or enters a standby mode to conserve energy. As soon as the driver initiates a turn, the ECU commands the power steering motor to instantly ramp up torque and speed, driving the hydraulic pump to generate the necessary pressure for steering assistance. This rapid response capability is critical for safety and is made possible by the 180 Series' low rotor inertia and high torque density.
4. Materials & Construction Quality of automotive Power Steering Pump Driving Motor
Rare-Earth Rotor Magnets
We utilize high-grade Neodymium Iron Boron (NdFeB) magnets in the rotor assembly. These magnets provide a powerful and consistent magnetic field, which is essential for maintaining high torque output even as the motor heats up. Their resistance to demagnetization ensures the motor maintains peak performance over years of service.
Silicon Steel Stator Core
The stator laminations are stamped from cold-rolled, non-grain-oriented silicon steel. This material is specifically chosen for its low magnetic loss properties, which significantly reduce eddy currents and hysteresis losses, contributing to the motor's >92% efficiency rating.
Aluminum Alloy Housing
The 180 Series automotive Power Steering Pump Driving Motor features a robust casing cast from high-strength aluminum alloy. This material offers an excellent strength-to-weight ratio and superior thermal conductivity, acting as a natural heat sink to dissipate thermal energy generated during operation, ensuring the Class H insulation system is never compromised.
5. How to choose the right Automotive Power Steering Pump Driving Motor?
When choosing the right Automotive Power Steering Pump Driving Motor, it’s essential to consider several key performance factors. The 180 Series automotive Power Steering Pump Driving Motor, including models like the 180ST-SNT220-023-15A, 180ST-SNT380-030-15A, and others, offers a range of specifications designed to meet different vehicle requirements.
For instance, the 180ST-SNT380-030-15A model operates within a voltage range of 320-420 VDC, with a rated power of 3 kW and a peak torque of 19 Nm. The motor maintains a high efficiency of 92.9% at a constant speed of 1500 rpm, ensuring optimal power output for steering assistance in electric vehicles (EVs). The model also features a robust IP67 rating, making it highly resistant to water and dust, ideal for a variety of environments, from urban streets to outdoor conditions.
Additionally, it's important to assess the motor’s efficiency map and power factor, as seen in the provided efficiency and power factor maps, to ensure that the motor performs well under different operational conditions. Make sure to match the motor's specifications, such as speed and torque, with the demands of the specific vehicle application, whether it's an electric bus, logistics truck, or industrial machinery.
6. Automotive Power Steering Pump Driving Motor's Application Scenarios
The power steering pump driving motor for EV 180 Series is engineered for versatility. Its high torque output makes it suitable for a wide array of heavy-duty applications where reliability is non-negotiable.
Electric City Buses
Provides reliable, quiet steering assistance for 10-12 meter electric transit buses. The "power-on-demand" feature is crucial for stop-and-go city traffic, extending battery range and reducing noise pollution in urban environments.
Mining & Heavy Trucks
Ideal for electric mining dump trucks and heavy logistics vehicles. The high peak torque (up to 34.2 Nm) ensures drivers can maneuver heavy payloads on rough, uneven terrain without excessive physical effort.
Sanitation Vehicles
Used in electric street sweepers and garbage compactors. The IP67 rating is essential here, protecting the motor from the water, dust, and grime associated with daily sanitation operations.
Port Machinery
Suitable for electric reach stackers, forklifts, and AGVs used in ports. The robust construction withstands the corrosive coastal atmosphere while providing precise control for handling containers.
7. About EVER-POWER
At EVER-POWER, we are the Automotive Power Steering Pump Driving Motor 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 Partner with Us?
- ✓ Elite R&D: 100+ technical experts for customization.
- ✓ Global Standards: Comprehensive ISO quality management.
- ✓ Complete Portfolio: Motors for steering, braking, and propulsion.
8. Related Products
Powerful traction motors for the main propulsion of electric buses and logistics trucks.
Industrial Gearboxes
Precision gearboxes compatible with our motor series for diverse industrial automation needs.
FAQ
Q1. What are the specific advantages of using the 180 Series Power Steering Pump Driving Motor regarding thermal management in heavy-duty electric trucks?
A1. The 180 Series excels in thermal management due to its larger frame size and high-strength aluminum alloy housing, which acts as a superior heat sink. Combined with Class H insulation that withstands temperatures up to 180°C, this motor can endure the intense heat generated during frequent start-stop steering maneuvers in heavy-duty trucks without overheating, ensuring continuous operation even in demanding environments.
Q2. How does the EP-Automotive Power Steering Pump Driving Motor contribute to energy savings compared to traditional hydraulic systems in electric bus fleets?
A2. Unlike traditional hydraulic systems that run continuously off the engine, our PMSM motor operates on a "power-on-demand" basis. It only consumes significant energy when steering assistance is actually needed. For an electric bus fleet, this reduction in parasitic load can translate to a noticeable extension in driving range per charge and lower overall operational costs.
Q3. Where can I find the detailed automotive power steering pump driving motor diagram for integrating the 180ST-SNT380-043-15A model into my chassis?
A3. For the specific automotive power steering pump driving motor diagram, including the flange dimensions, shaft output specs, and mounting hole patterns for the 180ST-SNT380-043-15A, please contact our engineering support team directly. We provide comprehensive 2D and 3D CAD files to facilitate seamless integration into your vehicle's specific chassis design.
Q4. Is the 180 Series suitable as a direct power steering pump driving motor replacement for older hydraulic units in retrofitting projects?
A4. Yes, the 180 Series is an excellent candidate for power steering pump driving motor replacement in retrofit projects (electrification of ICE vehicles). Its standard mounting interfaces and robust torque output allow it to replace engine-driven pumps effectively, provided the vehicle is equipped with a compatible high-voltage DC power source and controller.
Q5. Which specific maintenance procedures are required for the power steering motor to ensure longevity in mining environments?
A5. The 180 Series is designed to be virtually maintenance-free thanks to its brushless PMSM design and sealed bearings. However, in mining environments, we recommend periodic visual inspections of the external housing for physical damage and checking the integrity of the electrical connections and seals to ensure the IP67 protection remains compromised against abrasive dust and mud.
Q6. What is the ingress protection level of the 180 Series, and how does it protect against water damage in flood-prone operation areas?
A6. The 180 Series boasts an IP67 protection rating. This means the power steering motor is completely dust-tight and can withstand temporary submersion in water up to 1 meter deep. This provides robust protection against road splash, heavy rain, and navigating through flood-prone urban areas, preventing water ingress that could cause short circuits.
Q7. How does the electrical time constant of the 180 Series affect the responsiveness of the steering system during rapid maneuvers?
A7. The low electrical time constant (ranging from 11.12ms to 15.75ms depending on the model) allows the current in the motor windings to rise rapidly. This translates to an immediate torque response when the controller commands it, ensuring that the driver feels no lag in steering assistance during rapid emergency maneuvers or sharp turns.
Q8. When selecting a motor for a 380V system, why should I choose the SNT380-043-15A model over the SNT380-030-15A?
A8. You should choose the SNT380-043-15A if your application involves heavier loads requiring higher torque. This model offers a rated power of 4.3kW and a massive 34.2 Nm of torque, compared to the 3kW and 19 Nm of the 030 model. It is specifically designed for the heaviest class of electric commercial vehicles that need maximum steering assistance.
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