Load current feedforward control of boost converter for downsizing output filter capacitor

Takei, Daisuke; Fujimoto, Hiroshi; Hori, Yoichi

doi:10.1109/iecon.2014.7048713

Cited by 17 publications

(12 citation statements)

References 11 publications

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“…Voltage control methods based on load current feedforward control have been reported. The purpose of these studies was to suppress DC link voltage fluctuations against such disturbances during load fluctuations . Ref.…”

Section: State Of the Artmentioning

confidence: 99%

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Design method considering the frequency band of the disturbance in the DC link voltage control system of hybrid electric vehicle driving systems

Heo

Kondo

2019

Electrical Engineering Japan

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DC link voltage variable systems with DC/DC converter are used in hybrid electric vehicles for improving the power of the system by boosting the DC link voltage. Voltage feedback control using only proportional compensator has been proposed as a control method for the DC/DC converter. The control system can be easily designed, but there is a possibility that a steady‐state error occurs in the DC link voltage. In this paper, a proportional integral compensator is proposed to eliminate the steady‐state error of the DC link voltage in DC link voltage feedback controllers. In addition, when designing the gain of the compensator, the frequency band of the disturbance is considered. The proposed method is verified through experiments on the downsizing model.

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Section: State Of the Artmentioning

confidence: 99%

“…The purpose of these studies was to suppress DC link voltage fluctuations against such disturbances during load fluctuations. 9,10 Ref. 9 calculates the instantaneous power during sudden load changes and demonstrates that DC link voltage fluctuation during transition can be suppressed by feedforward control.…”

Section: State Of the Artmentioning

confidence: 99%

Design method considering the frequency band of the disturbance in the DC link voltage control system of hybrid electric vehicle driving systems

Heo

Kondo

2019

Electrical Engineering Japan

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“…Assuming that the resonant frequency of WPT is much higher than the switching frequency of the DC-DC converter, i dc is defined as the average current flowing into the DC-link capacitor. This paper expresses the plant model of the DC-DC converter using the state space averaging method [20]. Then, the DC-DC converter is operated in a continuous conduction mode.…”

Section: Power Control On Vehicle Side 41 Control Strategymentioning

confidence: 99%

Dynamic Wireless Power Transfer System for Electric Vehicle to Simplify Ground Facilities - Power Control Based on Vehicle-side Information -

Hata

Imura

Hori

2015

WEVJ

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Electric vehicles (EVs) have environmental advantages and the capacity for advanced motion control. However, EVs need to be charged frequently due to their limited mileage per charge. A dynamic wireless power transfer (WPT) system for EVs can extend their cruising distance and reduce the size of their energy storage system. However, when being applied to rugged roadways over long distances, it is important to simplify ground facilities as much as possible. While it is practical for a static system to control both side using communication, a dynamic system for EVs should be controlled only on the vehicle-side. To implement a suitable control system, this paper focuses on vehicle-side control for achieving a required power and proposes a control method based on roadside voltage estimation using only vehicle-side information. Conventional methods have proposed voltage control using a DC-DC converter on the vehicle-side while roadside voltage is regulated to obtain a reference value. However, this causes ground facilities to become complicated due to a need for a feedback system. The proposed method estimates roadside voltage, therefore eliminating the need for its regulation. As a result, ground facilities can be simplified. The estimation equation is based on the equivalent circuit of a WPT system and expressed as a function of vehicle-side voltage and current. The reference value and the equilibrium point of the DC-DC converter can be obtained by the estimated roadside voltage. Therefore, the power control system with a voltage controller can be designed. The estimation equation and the power control are verified by experiments. These results suggest that the proposed method can achieve the required power without controlling the roadside or communicating between a vehicle and ground facilities.

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“…In the ZMETC method, the unstable zero is converted into a stable pole of the approximated inverse system by equation (8).…”

Section: Zmetc Methodsmentioning

confidence: 99%

“…In other words, besides the dynamics of the plant, the position and characteristic of the sensors and the actuators also have a role in determining the zeros (5) . Some examples of plants having unstable zeros in continuous time domain are: the wafer stage of a semiconductor exposure apparatus (6) , the hard disk drive (HDD) (7) , boost converter (8) , the permanent magnet synchronous motor during six-step operation (9) and so on. In these cases, the unstable intrinsic zeros are generated by discretization.…”

Section: Introductionmentioning

confidence: 99%

Perfect Tracking Control Method by Multirate Feedforward and State Trajectory Generation based on Time Axis Reversal

Ohnishi

Fujimoto

2018

IEEJ Journal IA

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A plant with unstable zeros is known as difficult to control because of initial undershoot of step response and unstable poles of its inversion system. There are two reasons why a plant has unstable zeros in a discrete time domain: 1) non collocation of actuators and sensors and 2) discretization by zero-order hold. Problem 2) has been solved using the perfect tracking control (PTC) method based on multirate feedforward control proposed by our research group. However, the conventional PTC method cannot achieve the perfect tracking for a plant with continuous-time unstable zeros because of the divergence of the desired state trajectories. This paper proposes a preactuation perfect tracking control (PPTC) method to solve problem 1) through the state trajectory generation based on a time axis reversal. The validity of the proposed method is demonstrated through simulations in comparison with three single-rate feedforward control methods.

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Load current feedforward control of boost converter for downsizing output filter capacitor

Cited by 17 publications

References 11 publications

Design method considering the frequency band of the disturbance in the DC link voltage control system of hybrid electric vehicle driving systems

Design method considering the frequency band of the disturbance in the DC link voltage control system of hybrid electric vehicle driving systems

Dynamic Wireless Power Transfer System for Electric Vehicle to Simplify Ground Facilities - Power Control Based on Vehicle-side Information -

Perfect Tracking Control Method by Multirate Feedforward and State Trajectory Generation based on Time Axis Reversal

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