Por favor, introduzca palabras clave para buscar

Global |EN

Elige tu país e idioma

Asia Pacífico

Australia y Nueva Zelanda
India
Indonesia
Corea
Malasia
Filipinas
Singapur
Singapur (luz del sol)
Vietnam

Oriente Medio y África

CHINT-EGEMAC
Arabia Saudita
Sudáfrica
Emiratos Árabes Unidos
CHINT AJLAN

Europa

España
Francia
Kazajstán
Italia
Netherlands
Pavo
Reino Unido

América del norte

México

América Latina

Brasil
Colombia
Ecuador
Perú
Baja tensión
Aparatos de conmutación de baja tensión y software
Carga de vehículos eléctricos
Telecomunicaciones y Data centers
Edificios
Centro de servicio
Contáctenos
Llámanos +57 (601) 712-5419
Envíenos un correo electrónico infoco@chintglobal.com
Acerca de CHINT
Centro de noticias
Carreras

Elige tu país e idioma

Australia y Nueva Zelanda
India
Indonesia
Corea
Malasia
Filipinas
Singapur
Singapur (luz del sol)
Vietnam
CHINT-EGEMAC
Arabia Saudita
Sudáfrica
Emiratos Árabes Unidos
CHINT AJLAN
España
Francia
Kazajstán
Italia
Netherlands
Pavo
Reino Unido
México
Brasil
Colombia
Ecuador
Perú

Por favor, introduzca palabras clave para buscar

Su término de búsqueda contiene palabras clave restringidas. Utilice otras palabras clave.

Understand the Applications of Variable Speed Drive (VFD)

APR 28, 2024

Table of Contents

  1. How Variable Speed Drives Control Constant Torque Loads
  2. How Variable Speed Drives Control Variable Torque Loads
  3. Product Highlight: CHINT NVF2G-S General Purpose VFD
  4. Conclusion

Precise control over the speed and torque of motors is of utmost importance. Over-speeding motors leave mechanical stress and wreck motor windings and bearings. Insufficient torque renders motors under stall conditions, which can lead to motor damage and even complete failure. Variable speed drives (VFD) can address these issues by controlling the frequency and voltage of AC delivered to electric motors. They are widely used in different scenarios. Two major applications of variable frequency drives are constant torque loads and variable torque loads.

How Variable Speed Drives Control Constant Torque Loads

Constant torque loads refer to devices that require constant torque during operation. Typical constant torque loads include compressors, conveyors, hoists, mixers, rewinders, etc. The torque of the electric motors for these devices should remain the same at all motor speeds. For example, constant torque means the conveyors can move items at a steady pace at each speed mode. This is especially important for handling fragile items.

To achieve constant torque, variable frequency drives must be used to control the frequency and voltage of electric motors precisely. A variable speed drive should increase the voltage supplied to electric motors linearly as it increases frequency, and decrease the supplied voltage as the frequency decreases.

How Variable Speed Drives Control Variable Torque Loads

As the name suggests, the torque of variable torque loads changes during operation. Typical variable torque loads include centrifugal pumps, fans, blowers, etc. These applications only require low torque at low operating speeds and much higher torque at high speeds. The load torque required is approximately proportional to the square of the speed.

Variable speed drives precisely modulate the motor torque and speed in these variable torque applications. This precise control aligns the motor’s output with the exact load requirements, thereby enhancing energy conservation. To illustrate, if a fan’s speed reduces by half, the torque required reduces to a quarter. The horsepower, which equals speed times torque, consequently drops to one-eighth of its original value. This reduction in horsepower consumption translates into improved energy efficiency for the fan’s operation.

Product Highlight: CHINT NVF2G-S General Purpose VFD

With nearly four decades of industry experience, CHINT is a renowned manufacturer and supplier of variable speed drives. At CHINT, our VFDs are designed with advanced technology. CHINT NVF2G-S General Purpose VFD is an example of our commitment to innovation and performance. It can be applied to both constant torque and variable torque loads. Its main advantages include:

Adaptable to Different Application Scenarios

CHINT NVF2G-S General Purpose VFD excels in adaptability. It operates efficiently in temperatures ranging from -10°C to 55°C, with a derating requirement between 45°C and 55°C. This surpasses competitors like Schneider, which has a narrower temperature range of 0°C to 50°C. Additionally, the NVF2G-S accommodates an expanded input voltage of 380V to 440V and an output frequency of up to 400Hz, making it suitable for high-speed applications.

Parameter Replication

This adjustable speed drive allows parameter replication. This is particularly beneficial for OEM industries with standardized equipment, where identical parameters across multiple drives are the norm. Instead of individually configuring each unit, this feature allows for the configuration of one drive to be cloned onto others. It streamlines the setup process, saves time, and minimizes the risk of manual errors.

Torque Control Function

CHINT NVF2G-S General Purpose VFD features an advanced torque control function, which significantly impacts performance in precision applications. Imagine the challenge in toilet paper production, where too little tension results in loose rolls, and too much leads to tears. The frequency converter’s torque control addresses this by maintaining a steady force. This translates to consistently high product quality.

Conclusion

Overall, variable speed drives provide precise control over the torque and speed of electric motors. They are used for constant torque and variable torque loads. Suitable for both applications, CHINT NVF2G-S General Purpose VFD stands out for its high adaptability, parameter replication and torque control function. Browse our website to learn more about our variable speed drives.

Lo último
MAY 6, 2025 NGC5 Diseñado para la excelencia, fabricado para la fiabilidad

NGC5 Original Manufactured LV Switchgear es el nuevo tipo de montaje de prueba elaborado por CHINT. Establece un nuevo punto de referencia para la fiabilidad y la eficiencia.

APRIL 22, 2025 Cómo protege el magnetotérmico NM8N-HV las salidas de CA de los sistemas solares

El disyuntor de caja moldeada NM8N-HV proporciona una protección esencial para las salidas de CA en sistemas de energía solar contra cortocircuitos y sobrecargas.

APRIL 15, 2025 What is a New Energy Air Switch Disconnector: Facts You Need to Know

Discover how the new energy air switch disconnector (solar disconnector switch) plays a crucial role in ensuring safety and reliability in utility-scale solar and battery energy storage systems (BESS).

APRIL 2, 2025 Experience Smooth Motor Starting with CHINT’s NJRP5-D Soft Starter

This article focuses on CHINT’s NJRP5-D Soft Starter and explores its functionality and advantages.

MARCH 26, 2025 Celda de media tensión GIS RMU CHINT 36/40,5kV: Nuevas aplicaciones energéticas con soluciones innovadoras

La celda de media tensión RMU CHINT no sólo resuelve los retos técnicos y medioambientales, sino que también mejora la eficacia operativa y la rentabilidad de los clientes.

MARCH 21, 2025 Single Phase vs Three Phase Voltage Regulator

This article explains the differences between single phase voltage regulators and three phase voltage regulators.

MARCH 18, 2025 Miniature Circuit Breaker: Understanding UL 489 and UL 1077

This article specifies the key differences between UL 489 and UL 1077, helping choose suitable Miniature Circuit Breakers.

MARCH 17, 2025 IEC frente a UL: Comprender las normas de certificación de disyuntores de aire

Compare la certificación IEC frente a la UL para disyuntores de aire: normas regionales, cumplimiento de las normas de seguridad y soluciones con certificación mundial de CHINT para una protección eléctrica fiable.

MARCH 5, 2025 Guide to Air Circuit Breaker Maintenance

This guide discovers essential inspection, cleaning, and testing procedures of the air circuit breaker to prevent failures and extend equipment lifespan.

FEBRUARY 26, 2025 The Basics of NVF2L Compact Micro Drive

NVF2L Compact Micro Drive is designed to meet the growing demand for efficient, space-saving solutions in various industrial applications. Explore CHINT's industrial drive technology solutions.