Superconducting magnet power supply

The Vectomag SP Series Superconducting Magnet Power Supply is a fully digital, high-stability power system specifically designed for superconducting magnets.

It adopts an advanced architecture tailored to the operational characteristics and precision control requirements of superconducting systems.

This power supply features a hybrid topology—a front-end switching power stage for efficient pre-voltage regulation combined with a rear-end linear current stabilization circuit.

The design merges the high efficiency of switching converters with the low ripple performance of linear regulation, ensuring superior magnetic field stability.

The modular system covers a wide current range from 100 A to 1000 A, with a unified operating interface across all models, offering flexibility and ease of use for both laboratory and industrial superconducting applications.

Cabinet Type Superconducting Power Supply

1. Automatic Constant-Current and Constant-Voltage Switching Enables seamless control transition, particularly suitable for superconducting magnets with large inductance.
2. Intelligent Polarity Reversal Detection Automatically detects the reversing-switch status. When the reversing circuit is connected, users can directly set negative current values, and the system automatically performs polarity inversion for true bipolar ± current output.
3. Programmable Ramp Segments Charging and discharging rates and constant-current voltages can be set independently in multiple segments between 0 A and target A, allowing precise control during magnet excitation and decay.
4. Four-Quadrant Operation Supports positive/negative current and voltage output modes, realizing full bidirectional control of magnet charging and discharging.
5. Automatic Quench Detection & Protection Built-in circuitry can automatically detect magnet quench events or receive external quench signals for system-level safety response.
6. Quench Energy Dump Circuit A dedicated discharge resistor—automatically engaged upon quench—safely dissipates stored magnetic energy to protect the coil and system.
7. High-Resolution Touchscreen Interface Local control via a 7-inch color LCD touch display with intuitive, menu-based navigation and real-time monitoring.
8. Remote Communication USB and LAN interfaces support remote configuration, data logging, and system diagnostics.
9. Parallel Operation for High-Current Systems Multiple SP units can operate in parallel via RS-485 bus control for expanded current capability.
10. Comprehensive Protection & Emergency Shutdown Multi-layer protection against power loss, cooling failure, and abnormal conditions. The front-panel Emergency Stop button instantly cuts output and activates the energy-dump circuit.

• Real-time monitoring of output voltage, current, and polarity
• Data logging and trend visualization
• Programmable current/voltage ramping profiles
• Quench alarm logging and event reporting
• Firmware-upgradable control interface

The SP Series can be configured as a standalone control unit or integrated within a larger magnet control platform.

It provides both local touchscreen control and remote PC supervision via USB or LAN.

Parallel operation allows multi-channel current expansion while maintaining synchronization and precision stability.

Current Stability Curve – Model SP120-8-5Q

The Vectomag SP Series superconducting magnet power supply is designed for precision current control in cryogenic and high-field magnet systems, applicable to:

• Superconducting magnet charging and persistent-mode operation
• Magnetic resonance and imaging systems (NMR / MRI)
• Cryogenic material research and low-temperature transport experiments
• Hall-effect and magneto-resistance testing
• Particle beam control and high-field laboratory research

• Magnet quench protection resistors
• Reversing switch assembly
• External control relay module
• Remote operation software (via LAN or RS-485)
• Rack-mount or cabinet-type configurations
• Customized cable sets and connectors

For ordering, please specify the following:

• Model number (e.g., SP240-8-5Q)
• Output current and voltage requirements
• Cooling method (air / water)
• Optional accessories (reversing switch, discharge resistor, etc.)
• Custom integration needs (communication, mounting format)