Background

Three-phase motors are widely used in industrial applications such as conveyors, pumps, fans, compressors, and automation equipment due to their high efficiency, reliability, and strong load capability.

However, many traditional motor systems operate at fixed speed, which can lead to unnecessary energy consumption, mechanical stress during startup and shutdown, increased equipment wear, and limited flexibility in production process control.

A manufacturing customer required an efficient and reliable motor drive solution for a 4kW three-phase motor used in a production conveyor system. The solution needed to provide precise speed regulation, smooth acceleration and deceleration, energy-efficient operation, and stable performance under continuous industrial working conditions.

Challenge

The customer required a reliable three-phase VFD solution capable of:

• Supporting standard industrial three-phase power supply;

• Providing accurate speed control for different production requirements;

• Reducing energy consumption during motor operation;

• Minimizing mechanical impact during motor startup and shutdown;

• Maintaining stable performance under continuous operation and variable load conditions;

• Simplifying system integration, commissioning, and maintenance.

Solution: Wolong WD200 Series Three-Phase VFD

Wolong supplied the WD200-4T-004G-B-GJZ, a general-purpose three-phase VFD designed for industrial motor applications.

With advanced motor control algorithms and flexible configuration options, the WD200 series delivers efficient, stable, and precise motor control for conveyors, automation equipment, and various industrial applications.

Key Features of the Solution

Three-Phase Power Compatibility

Supports standard industrial three-phase power input, making it suitable for manufacturing plants, automation systems, and industrial machinery.

High-Efficiency Operation

Achieves up to 98% operating efficiency, reducing energy losses and improving overall system efficiency while helping customers lower long-term operating costs.

Advanced Motor Control Technology

Supports multiple control modes:

• V/F Control;

• Sensorless Vector Control (SVC);

• Flux Vector Control (FVC);

• PWM Control.

These advanced control technologies provide precise speed regulation, stable torque output, and optimized performance under different load conditions.

Strong Overload Capability

With a rated output current of 9A and maximum output current of 13.5A (60s overload capacity), the WD200 ensures reliable operation during motor startup and demanding load conditions.

Wide Frequency Range

Supports 0–600Hz output frequency, enabling flexible speed adjustment for various industrial applications.

Key Results

• Achieved stable and reliable speed control for three-phase motors in conveyor and industrial automation applications;

• Improved energy efficiency through optimized motor operation;

• Reduced mechanical stress through smooth acceleration and deceleration control;

• Increased production flexibility with precise speed adjustment;

• Reliable performance validated by CE certification and compliance with international standards.

Technical Specifications

The Wolong WD200 Series Three-Phase VFD provides a reliable and energy-efficient motor control solution for industrial applications.

With advanced control technology, high efficiency, strong overload capability, and flexible speed regulation, the WD200 series is well suited for conveyors, pumps, fans, compressors, and industrial automation equipment.

By improving motor performance, reducing energy consumption, and enhancing operational stability, the WD200 helps customers achieve more efficient and reliable industrial operations.