The HVPMD offers:

• Capacitive in nature so nearly loss-less
• High input impedance, low leakage current
• Minimal power dissipation, compared to resistive dividers
• Adjustable voltage division ratio
• Excellent frequency response
• Low voltage droop
• Provides actual pulse shape

Optimized for:

• Pulse amplitudes up to 250 kV and tested upto 125 kV
• Pulse widths in the microsecond range (0.1 μs-100 μs)
• Rise/fall times of a few tenths of microseconds (0.1 μs)

Ideal for high-voltage pulsed power systems requiring:

• Non-resistive voltage division
• Accurate pulse shape monitoring

Applications:

• Pulsed high voltage measurement and monitoring
• High voltage klystron pulse modulators

HVPMD is widely used for voltage measurement in pulsed power systems such as particle accelerators, pulse high-voltage generators, where accurate and fast response is desired. The HVPMD offers a high input impedance, low leakage current, low power loss, and excellent frequency response so it enables precise, fast, and safe voltage measurements. Compared to resistive dividers, it offers superior transient response and less heating. It requires a careful design and fabrication. The HVPMD is optimized for hundreds of kilo-volts pulses with micro-second pulse width and few tenths of seconds of rise-fall time.

Salient features of -36 kV, 24 A DC power supply

1. Full range 24-pulsed input system, which achieves low input harmonics and high IPF, thereby completely avoiding input filter in three phase 11 kV line.
2. Full range low ripple output, irrespective of input and output voltages and number of faulty power modules, thereby completely avoiding crowbar for protecting sensitive RF amplifier.
3. Control is on intermediate low voltage, even though both the input and output of this power supply are on the high voltages.  
4. Input section is completely independent of the output control section. So the variation of input voltage, output set voltage and number of faulty modules of this power supply neither affect the input harmonics and IPF nor output voltage ripple.
5. Online isolation of faulty modules and auto staggering of healthy modules.
6. Flexibility of increasing the output voltage by adding number of DC-DC power modules having higher isolation in them.
7. High system reliability and availability due to active redundancy incorporated in this modular power supply.
8. It is a unique scheme, which inherently achieves both 24 pulsed 11 kV input system as well as full range low ripple output simultaneously. It achieves better input and output performances at lower cost compared to existing schemes employed worldwide and so is likely to gain popularity for biasing high power RF amplifiers.

INTRODUCTION

This HVPMD is designed for pulsed high-voltage applications up to 125 kV. It features a robust design with a top-mounted high-voltage terminal, a BNC output at the ground potential and compatible with RG-58 coaxial cable for direct connection to an oscilloscope. The voltage division ratio is configurable during manufacturing to suit specific measurement needs.

Technical specifications

INFRASTRUCTURE

• Mechanical fabrication facilities preferably a CNC machine, outsourcing may be acceptable
• Electronics PCB assembly facility
• Test instruments like function generator, oscilloscope, multimeter, Meggar etc. for preliminary low voltage testing
• High voltage pulse testing facility, outsourcing may be acceptable.

SPACE

• Floor area ≥ 250 square feet

MANPOWER

One CNC operator, one electronics technician, and one electronics engineer are sufficient to start production.