A Simplified Model for Parameter Estimation and Circuit Analysis of Inductive-Adder Modulator

Zhang, W.; Ng, Wai Man; Pai, C.; Sandberg, J.; Tan, Y.; Tian, Yuke

doi:10.1109/tdei.2007.4286525

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…The simplified equivalent circuit of a single layer of the inductive adder, which is based on the model shown in [12], is presented in figure 4. The model consists of 18 identical layers, each of which includes storage capacitor Cs, primary leakage inductance Lkp, magnetizing inductance Lm, secondary leakage inductance Lks, coupling capacitance Cc and switches.…”

Section: Simulation Modelmentioning

confidence: 99%

“…Therefore, the diameter of the secondary winding can be adjusted to obtain the desired output impedance for the adder. Table 2 shows the parameters for the sensitivity analysis: a nominal value of 20 nH was assumed for L kp and the values of L ks and C c calculated, from the equations of [12], to obtain an output impedance of 50 Ω. The value of L kp was then changed by ±30 % and the values of L ks and C c were recalculated, by effectively changing the diameter of the secondary winding, so that the output impedance was still 50 Ω: it was assumed that the insulation material between the primary and secondary windings is polyethylene with permittivity of 2.3.…”

Section: Sensitivity Analysis a Design Parameters Of The Adder Stackmentioning

confidence: 99%

“…Figure 5 shows the predicted output voltage of an 18-layer inductive adder for the 3 sets of parameter values shown in Table 2. The output of the adder is in all cases matched to the load according to equations shown in [12], and an ideal 50 Ω load is modelled. The different values of the stack inductance, The table 3 summarizes the results.…”

Section: Sensitivity Analysis a Design Parameters Of The Adder Stackmentioning

confidence: 99%

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Sensitivity analysis for the CLIC damping ring inductive adder

Holma

Barnes

2012

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

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The CLIC study is exploring the scheme for an electron-positron collider with high luminosity and a nominal centre-of-mass energy of 3 TeV. The CLIC pre-damping rings and damping rings will produce, through synchrotron radiation, ultra-low emittance beam with high bunch charge, necessary for the luminosity performance of the collider. To limit the beam emittance blow-up due to oscillations, the pulse generators for the damping ring kickers must provide extremely flat, high-voltage pulses. The specifications for the extraction kickers of the CLIC damping rings are particularly demanding: the flattop of the output pulse must be 160 ns duration, 12.5 kV and 250 A, with a combined ripple and droop of not more than ±0.02 %. An inductive adder allows the use of different modulation techniques and is therefore a very promising approach to meeting the specifications. PSpice has been utilised to carry out a sensitivity analysis of the predicted output pulse to the value of both individual and groups of circuit components: these results are used to define component performance requirements, nominal values and tolerances. This paper reports the simulation results as well as tests and measurements of the various candidate components, including semiconductor switches, pulse capacitors and transformer cores. ABSTRACTThe CLIC study is exploring the scheme for an electronpositron collider with high luminosity and a nominal centre-of-mass energy of 3 TeV. The CLIC pre-damping rings and damping rings will produce, through synchrotron radiation, ultra-low emittance beam with high bunch charge, necessary for the luminosity performance of the collider. To limit the beam emittance blow-up due to oscillations, the pulse generators for the damping ring kickers must provide extremely flat, high-voltage pulses. The specifications for the extraction kickers of the CLIC damping rings are particularly demanding: the flattop of the output pulse must be 160 ns duration, 12.5 kV and 250 A, with a combined ripple and droop of not more than +/-0.02 %. An inductive adder allows the use of different modulation techniques and is therefore a very promising approach to meeting the specifications. PSpice has been utilised to carry out a sensitivity analysis of the predicted output pulse to the value of both individual and groups of circuit components: these results are used to define component performance requirements, nominal values and tolerances. This paper reports the simulation results as well as tests and measurements of the various candidate components, including semiconductor switches, pulse capacitors and transformer cores.

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Section: Simulation Modelmentioning

confidence: 99%

Section: Sensitivity Analysis a Design Parameters Of The Adder Stackmentioning

confidence: 99%

Section: Sensitivity Analysis a Design Parameters Of The Adder Stackmentioning

confidence: 99%

See 1 more Smart Citation

Sensitivity analysis for the CLIC damping ring inductive adder

Holma

Barnes

2012

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

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“…In our earlier papers [l] and [2] , we presented an inductive voltage adder (IVA) transmission network model based on circuit element simplification approach and a set of estimation formulas derived from the model. It was the first step to reveal IVA mechanism.…”

Section: Introductionmentioning

confidence: 99%

Inductive voltage adder network analysis and model simplification

Zhang

Eng

Pai

et al. 2007

2007 16th IEEE International Pulsed Power Conference

Self Cite

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Inductive voltage adder topology has attracted great attentions in pulse power community for near two decades. However, there has been lack of literatures on inductive voltage adder network analysis and circuit design model. We have recently developed a simplified model and a set of simple formulas. An expanded model and more detailed analysis are presented in this paper. Our model reveals the relationship of output waveform parameters and hardware designs. Computer simulations have demonstrated that parameter estimation based on this approach is accurate. This approach can be used in early stages of project development to assist feasibility study, geometry selection in engineering design, and parameter selection of critical components. A set of fimdamental estimation formulas including system impedance, rise time, and number of stages are presented. This approach is also applicable to induction LINAC design. In addition, the model presented in this paper shows a new topology of high voltage waveform generator.

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“…Its corresponding simplified model derived in [2] is given in Figure 2. It was the first step to reveal IVA mechanism.…”

Section: Introductionmentioning

confidence: 99%

A simplified approach to analyze and model inductive voltage adder

Zhang

Eng

Pai

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

Self Cite

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We have recently developed a simplified model and a set of simple formulas for inductive voltage adder design. This model reveals the relationship of output waveform parameters and hardware designs. A computer simulation has demonstrated that parameter estimation based on this approach is accurate as compared to an actual circuit. This approach can be used in early stages of project development to assist feasibility study, geometry selection in engineering design, and parameter selection of critical components. In this paper, we give the deduction of a simplified model. Among the estimation forniulas we present are those for pulse rise time, system impedance, and number of stages. Examples are used to illustrate the advantage of this approach. This approach is also applicable to induction LINAC design.Its corresponding simplified model derived in [2] is given in Figure 2.

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A Simplified Model for Parameter Estimation and Circuit Analysis of Inductive-Adder Modulator

Cited by 8 publications

References 4 publications

Sensitivity analysis for the CLIC damping ring inductive adder

Sensitivity analysis for the CLIC damping ring inductive adder

Inductive voltage adder network analysis and model simplification

A simplified approach to analyze and model inductive voltage adder

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