Dc HV power supplies (HVPS) tests Dc HV power supplies are assembled on a chart in a laboratory. The dc HV power supplies comprise of three main units: a circuit breaker protected line rectifier which is the heaviest unit, a hermetically sealed oil-filled HV tank and an inverter section. The oil filled HV tank weighs… Continue reading Dc HV power supplies (HVPS) tests summary.
Overheat of major HVPS Components, 0C Load power, kW Transistor baseplate FWD baseplate HV tank (bulk oil) 100 (4 modules) 25 23 42 90 (3 modules) 27 10 38 Apparent (Pinapp) and active (Pinact) input powers, load power (PI), efficiency, and PF at norminal line for 100 kΩ load shows the experimental data on… Continue reading Overheat of major HVPS Components, 0C.
The Pros and Cons of Voltage Regulator Pass Devices. It can be noted that the all the NPN pass devices of the columns A and B have several attributes of the follower circuit, which gives high bandwidth and provides comparative immunity to cap off loading due to the characteristic lowest ZOUT. All of the three… Continue reading The Pros and Cons of Voltage Regulator Pass Devices.
Proposed control technique Pulsed loading is considered in control of HV power supplies. Load pulses have constant duty cycle and frequency. The load can be considered as current pulses of constant magnitude. During the interval of loading, variation in the load current magnitude is negligible. Each load pulse takes certain amount of charge from the… Continue reading Proposed control technique summary.
Nominal line voltage: 400 VAC. The HVPS was extensively tested with resistive loads. Figures 5 above and 6 below show generally phase-shifted primary winding currents (halved) for 100- and 50-kW operations, respectively. The oscillations after the main current surge are generated by the resonance between the leakage inductance and parasitic capacitance of the transformers. Note… Continue reading Nominal line voltage: 400 VAC.
Linear IC voltage regulators for long have been standard power systems building blocks. After an letter introductions in 5 V logic voltage regulator procedural form, they have since elaborated into other standard voltage degrees spanning from lesser than 1 V to 24 V, dealing output currents from as very low as 25 mA(or less) to… Continue reading Linear IC voltage regulators
Phase modulated series resonant converter For high-voltage DC power supplies, phase-modulated series resonant converter (PM-SRC) is the best suited to supply. The converter switches at a frequency slightly higher than the resonant frequency of the tank circuit, facilitating ZVS of the devices with the aid of the capacitors connected across them. Phase-modulated series resonant converter… Continue reading Phase modulated series resonant converter.
Short specification The following is introduction to the material, and also a brief outline of the specifications that guided the development and have been largely exceeded or met. The emphasis is on the dynamic characteristics combined with high power. The main specifications are as follows: Average output power: 100 kW in an output voltage range… Continue reading Pulsed Power Sources Short specification.
Modulator comparatives Ideally, a modulator behaves as the simplest switch between a very high voltage power supply and its given load (such as the aklystron). The desired characteristics of such an idealistic switch would be countless voltage hold off, countless off-resistance, the zero on-resistance, and the full immunity to oscillations and the voltage reversals. Figure… Continue reading Modulator comparatives summary.