The ABB/Baldor/Reliance SS4437P is a regenerative converter employing Pulse Width Modulation (PWM) technique to enable bidirectional power exchange between AC mains and a DC Bus. Designed as a power supply unit for drives and inverters, this SS4000 Series device utilizes PWM-controlled switching to approximate pure sine wave output while minimizing harmonic distortion. The converter supports continuous power regeneration, reactive power control, and DC bus voltage regulation. Built-in DC bus pressure rising suppression and self-diagnosis functions enhance system reliability and safety.
Technical Specifications
The SS4437P operates on AC mains input with output capability for supplying drives and inverters. PWM modulation techniques minimize output harmonics through automatic switching control. The design incorporates capacitive voltage-balancing capability and is fully reversible for energy recovery applications.
– Key Features
• Bidirectional power exchange between AC mains and DC Bus
• Continuous power regeneration capability
• Reactive power control
• DC bus voltage regulation
• PWM-based duty cycle modulation for sine wave approximation
• Capacitive voltage-balancing functionality
• Low harmonic distortion in AC line currents
• DC bus pressure rising suppression
• Integrated self-diagnosis functions
• Environmentally designed construction
– Typical Applications
The SS4437P serves as a power supply unit for variable frequency drives, inverters, and systems requiring energy recovery. Its regenerative architecture makes it suitable for applications where power flows bidirectionally between the AC utility and motor drive systems.
– Compatibility & Integration
The converter integrates with a wide range of industrial drives and inverters. Its regenerative topology facilitates system integration in energy recovery applications where mechanical braking energy must be returned to the AC mains or captured on the DC bus.
