An Improved Pulse Density Modulation of High-Frequency Inverter in ICPT System

Sheng, Xuerui; Shi, Liming; Fan, Manyi

doi:10.1109/tie.2020.3013782

Cited by 8 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5 shows the open loop system of single-phase LCLC resonant inverter in the s-domain, where K PSM is the equivalent gain of phase-shift full-bridge and I o is the inverter output load current. As a consequence, the expression of highfrequency inverter output voltage can be written as (6). Accordingly, with the control input defined as V ab = K PSM V dc , the voltage gain G vv (s) and output impedance Z vi (s) of single-phase LCLC resonant inverter are expressed as (7) and (8), respectively.…”

Section: Open Loop System Descriptionmentioning

confidence: 99%

“…Recently, single‐phase high‐frequency AC (HFAC) resonant inverter is widely used in the fields of computer, 1 telecommunications, 2 renewable energy microgrid, 3,4 inductive power transfer (IPT), 5,6 commercial, 7 international space station, 8,9 and other power distribution systems (PDS), 10–15 due to its advantages of less conversion stage, low electromagnetic interference (EMI), high power density, and small inductor and capacitor. Some scholars and enterprises have already introduced the HFAC PDS technology into the intelligent vehicle applications 15–19 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An active damping control strategy with improved transient performance for high‐frequency AC power distribution in intelligent vehicles

Zhou

Liu

Zhang

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

SummaryHigh‐frequency AC (HFAC) LCLC resonant inverter has recently received more and more attention in power distribution system (PDS) of intelligent vehicles. However, LCLC resonance complicates the design of a current control loop and can even threaten the stability and transient performance of PDS. Active damping (AD) strategies based on the feedback of a single filter voltage or current have been shown to be effective and cost‐efficient method for attenuating resonant spikes. In this paper, a notch filter‐based AD (NFAD) control strategy is proposed to improve the stability and transient performance of PDS for intelligent vehicles. By sensing and feeding back the output resonance current of LCLC resonant inverter, the NFAD control strategy is then formulated to emulate a virtual impedance in order to improve the system phase margin and crossover frequency. Hence, the proposed control strategy can not only suppress the LCLC double resonance peaks but also effectively improve the transient performance of resonant inverter while guaranteeing the stability of the system. Finally, an experimental prototype was established and tested to verify the effectiveness of the proposed control strategy with a rated output power of 130 W, an operation frequency of 25 kHz, and a sinusoidal output voltage of 28 V (rms).

show abstract

Section: Open Loop System Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An active damping control strategy with improved transient performance for high‐frequency AC power distribution in intelligent vehicles

Zhou

Liu

Zhang

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…The widespread use of induction heating at a domestic level is due to its clean, reliable, fast, flexible, and highly efficient operation [1][2][3][4]. The popularity of this heating system is due to the development of high-frequency switching converters.…”

Section: Introductionmentioning

confidence: 99%

A Simple Two-Stage AC-AC Circuit Topology Employed as High-Frequency Controller for Domestic Induction Heating System

et al. 2021

View full text Add to dashboard Cite

The induction heating process at a domestic level is getting attention nowadays as this power converting topology ensures clean, reliable, flexible, and fast operation. The low input frequency is converted to required regulated high output frequency with indirect and direct power converting approaches. The circuit and control complexity and high conversion losses associated with indirect power converting approaches lower their uses for domestic induction systems. The direct ac-ac power conversion approach is one of the viable solutions for low and medium power level loads, especially for domestic induction heating loads. The circuit complexity, cost, and conversion losses of the direct power converting systems depend on the number of the controlled switching devices as each controlled switch requires one gate driving circuit and one isolated dc supply. Simplified pulse width modulation (PWM) switching control also lower their control effort. Therefore, in this article, a simplified direct ac-ac power converting approach is introduced for a high-frequency domestic induction heating system. Here, the regulation of the high output frequency is achieved by simply cascading the single-phase full-bridge rectifier with a full-bridge inverter with a simple control strategy. The characteristics of the developed topology are validated through simulation results of the Simulink-based platform and practical results of the developed practical setup.

show abstract

“…In order to reduce the amplitude fluctuations and make the PDM control method more suitable for the SRI with a low value of a load quality factor, various enhanced PDM controls have been proposed [1]- [3], [6], [17], [18]. The general idea of these controls is that the duration of both the injection and freewheeling intervals or just the injection interval is an integer multiple of the half-period of the SRI output voltage.…”

mentioning

confidence: 99%

“…To avoid this unbalance, both halfbridges must operate alternatively during each enhanced PDM period. The switching sequence of the enhanced PDM can be further evenly distributed; this results in an additional reduction in current fluctuations [6], [17]. In both cases, the sign of the DC-component will alternate depending on the voltage sequence; as a result, the blocking capacitor will not be effective, and as a consequence, the matching transformer must be rated for a frequency lower than the operating one.…”

mentioning

confidence: 99%

A series-resonant inverter with extended topology and pulse-density-modulation control for induction heating applications

Herasymenko

Pavlovskyi

Yurchenko

2022

IJPEDS

View full text Add to dashboard Cite

This paper presents a series-resonant inverter (SRI) with an extended topology using a pulse-density modulation (PDM) control method. Theoretical analysis shows that the use of the SRI with extended topology and the PDM control (extended PDM-SRI) allows reducing the fluctuation of the SRI output current by more than 40% at the quality factor of 5 compared to a conventional SRI with the traditional PDM control. To eliminate drawbacks of the extended PDM-SRI, specificities of PDM switching sequences to ensure the zero-voltage-switching (ZVS) operation are discussed in detail, and a solution to the voltage imbalance across the capacitors of the extended topology is proposed. Simulation analysis of the extended PDM-SRI confirmed the effectiveness of using the proposed solutions to eliminate the drawbacks. The feasibility of the proposed SRI is confirmed by testing on a 2.2 kW experimental setup.

show abstract

An Improved Pulse Density Modulation of High-Frequency Inverter in ICPT System

Cited by 8 publications

References 25 publications

An active damping control strategy with improved transient performance for high‐frequency AC power distribution in intelligent vehicles

An active damping control strategy with improved transient performance for high‐frequency AC power distribution in intelligent vehicles

A Simple Two-Stage AC-AC Circuit Topology Employed as High-Frequency Controller for Domestic Induction Heating System

A series-resonant inverter with extended topology and pulse-density-modulation control for induction heating applications

Contact Info

Product

Resources

About