Regulation output load

Load regulation Percentage change in the output voltage(s) in response to a change in load current from one-half rated to rated load current. 

The closed-loop gain at dc should be as high as possible. This has a direct bearing on the output load regulation of the supply. 

Advantages Medium parts count, good output voltage line and load regulation, versatile, can provide step-up or step-down voltages Disadvantages No isolation from input to output... 

Disadvantages No isolation from input to output, no automatic line and load regulation File names Boostl (IsSpice), Boost2 (PSpice), Boost3 (Micro-Cap), Boost4 (SIMetrix)... 

A boost converter has an input range of 12 V to 15 V, a regulated output of 24 V, and a maximum load current of 2 A. What would be a reasonable goal for its inductance, if the switching frequency is a) 100 kHz, b) 200 kHz, and c) 1 MHz What is the peak current in each case And what is the energy-handling requirement ... 

Load regulation The percent change of output voltage for a change in output current. 

Figure 10.66 shows the plots of inverter gains vs. frequency ratio F obtained using the equations derived previously. It can be observed that the frequency variation required for load regulation is very wide for a series-loaded inverter, whereas it is very narrow for a parallel-loaded resonant inverter. But the inverter switch peak current decreases with the load current for a series-loaded inverter, whereas it does not decrease with the load current in the case of a parallel-loaded inverter. The series-parallel resonant inverter combines the advantages of series-loaded and parallel-loaded resonant inverters. Also, with a proper selection of Cj / Cp ratio, a near sine-wave output waveform which is almost load independent can be obtained. 

Stable electrical characteristics for the load (1) output voltage and frequency regulation, (2) ideal sine wave output, and (3) true 120° phase shift for three-phase models. 

Rq = power regulator output circuit impedance R = heater load resistance S = thermometer sensitivity, eraf/deg Tq - heat-sink temperature T = controlled temperature T controller set-point temperature, steady state V power regulator output emf Vq output emf at steady rate, T - Ti. ... 

In a V/f control generally, only the frequency is varied to obtain the required speed control. Based on this frequency, the switching logistics of the inverter control circuit control the inverter s output voltage using the PWM technique to maintain the same ratio of V/f. A W/control is, however, not suitable at lower speeds. Their application is limited to fan, pump and compressor-type loads only, where speed regulation need not be accurate, and their low-spccd performance or transient response is not critical and they are also not required to operate at very low speeds. They arc primarily used for soft starts and to conserve energy... 

What are the best guess maximum and minimum limits of the load current and are there any intermittent characteristics in its current demand such as those presented by motors, video monitors, pulsed loads, and so forth Always add 50 percent more to what is told to you since these estimates always turn out to be low. Also what are the maximum excursions in supply voltage that the designer feels that the circuit can withstand. This dictates the design approaches of the cross-regulation of the outputs, and feedback compensation in order to provide the needs of the loads. 

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